Lab1 - Ampop - 2008-09 - Instituto Politécnico de Tomar - Ampop - 2008-09.pdf · Ajuste o...

Instituto Politécnico de Tomar

Escola Superior de Tecnologia de Tomar

Departamento de Engenharia Electrotécnica

ELECTRÓNICA I

Trabalho Prático N.º 1

Montagens Básicas com Amplificadores Operacionais

Turma: ___ Turma: ___ Turma: ___

Efectuado pelos alunos:

Turma: ___

Curso: Data:

Grupo:

2008/2009

ELECTRÓNICA I T.P. N.º 1 Ampop

2/5

I – Objectivos Estudo de várias montagens com amplificadores operacionais: inversor, seguidor de tensão, amplificador diferencial e comparador regenerativo (Schmitt trigger). II – Material necessário - 1 TL071 - 1 Resistência 1 kΩ - 1 Resistência 1,5 kΩ - 1 Resistência 15 kΩ - 1 Resistência 22 kΩ - 2 Resistências 47 kΩ - 2 Resistências 100 kΩ - 1 Resistência 150 kΩ - 1 Resistência 1 MΩ - 1 Potenciómetro 100 kΩ - Fonte de alimentação simétrica de +15V /0 /-15V e de +5V /0 - Gerador de sinais - Osciloscópio - Chave de fendas de ajuste Notas: Não se esqueça que o amplificador operacional tem que funcionar sempre alimentado.

Quando iniciar uma montagem, em primeiro lugar deverá estabelecer as ligações de alimentação do ampop. Deverá mantê-las durante todo o trabalho, uma vez que são comuns a todas as montagens. Todas as alterações que efectuar nos circuitos deverão ser executadas com as fontes de sinal e de alimentação desligadas. O gerador de sinal só deverá permanecer ligado enquanto o ampop estiver alimentado. Assim, a sequência de operações deverá ser a seguinte:

1. Com tudo desligado, efectuar as ligações necessárias. 2. Verificar se as ligações estão correctas, com o auxílio do docente. 3. Ligar a fonte de alimentação. 4. Ligar o gerador de sinal. 5. Efectuar os procedimentos e medições necessários ao trabalho. 6. Desligar o gerador de sinal. 7. Desligar a fonte de alimentação.

III – Condução do trabalho

1. Compensação do “offset”

1.1. Monte o circuito necessário (de acordo com o catálogo do fabricante) para proceder à compensação do “offset” do ampop (TL071), com as entradas inversora e não-inversora curto-circuitadas e ligadas à massa (0V). Não se esqueça de, em primeiro lugar, alimentar o ampop com +15V/-15V.

1.2. Ajuste o potenciómetro por forma a obter uma tensão de saída com valor médio de 0V.

1.3. Mantenha as entradas curto-circuitadas mas ligue-as agora a uma tensão de 5VDC. Determine o ganho de modo comum do ampop.


3/5

2. Montagem inversora

2.1. Estabeleça as ligações necessárias para obter uma montagem inversora com uma resistência de entrada de 15KΩ e um ganho teórico de 10.

2.2. Aplique na entrada do circuito uma onda sinusoidal de 50mV de amplitude com uma frequência de 1kHz.

2.3. Com o osciloscópio, observe simultaneamente as formas de onda da tensão de entrada e de saída do circuito. Desenhe as formas de onda visualizadas.

2.4. Visualize a tensão diferencial de entrada do ampop. Compare-a com o valor teórico esperado.

2.5. Calcule o valor do ganho de tensão real do circuito e compare-o com o ganho ideal (teórico).

2.6. Substitua a resistência de realimentação, Rf, por uma resistência de 1MΩ e repita os pontos 2.2 a 2.5.

2.7. Retire a resistência Rf. Verifique e explique o que sucede à saída do circuito.

3. Seguidor de tensão

3.1. Efectue as ligações necessárias para obter um seguidor de tensão.

3.2. Aplique na entrada do circuito uma tensão sinusoidal com amplitude de 100mV e uma frequência de 1kHz.

3.3. Com o osciloscópio, observe as tensões de entrada e de saída do circuito. Desenhe as formas de onda visualizadas. Calcule o valor do ganho de tensão real do circuito e compare-o com o ganho ideal (teórico).

3.4. Visualize a tensão diferencial de entrada do ampop. Compare-a com o valor teórico esperado.

3.5. Repita os passos anteriores, 3.3 e 3.4, mas agora com uma tensão de entrada com forma de onda quadrada.

4. Amplificador diferencial


4/5

100

100

v a v 0

ΚΩ

ΚΩ

47 ΚΩ

v b 47 ΚΩ

v d

4.1. Monte o circuito representado na figura.

4.2. Recorrendo ao gerador de funções aplique na entrada va um sinal sinusoidal com 1V de amplitude e com uma frequência de 1kHz, e ligue vb à massa. Observe e desenhe as formas de onda va e vo. Compare com o valor teórico esperado.

4.3. Repita o procedimento anterior aplicando o mesmo sinal em va e 5VDC em vb.

4.4. Repita o procedimento anterior adicionando uma componente contínua de 5VDC ao sinal va (recorra ao botão “offset” do gerador de sinal).

4.5. Repita o procedimento 4.3 aumentando a amplitude do sinal va para 5V.

5. Comparador regenerativo (Schmitt trigger) 5.1. Execute a montagem representada na figura seguinte:

1k

100

100

v I v 0

Ω

ΚΩ

ΚΩ 22k Ω

5.2. Ajuste a tensão sinusoidal de entrada vI de modo a apresentar uma amplitude de 0,5V e uma frequência de 1kHz.

5.3. Com o osciloscópio, observe e desenhe a tensão de saída v0.

5.4. Observe no osciloscópio a função de transferência v0(vI).

5.5. Altere o valor dos componentes do circuito de modo a aumentar o intervalo de histerese. Desenhe as formas de onda obtidas. Registe o valor dos componentes que utilizou.


5/5

TL071, TL071A, TL071B, TL072TL072A, TL072B, TL074, TL074A, TL074B

LOW-NOISE JFET-INPUT OPERATIONAL AMPLIFIERSSLOS080D – SEPTEMBER 1978 – REVISED AUGUST 1996

1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Low Power Consumption

Wide Common-Mode and DifferentialVoltage Ranges

Low Input Bias and Offset Currents

Output Short-Circuit Protection

Low Total Harmonic Distortion0.003% Typ

Low NoiseVn = 18 nV/√Hz Typ at f = 1 kHz

High Input Impedance . . . JFET Input Stage

Internal Frequency Compensation

Latch-Up-Free Operation

High Slew Rate . . . 13 V/µs Typ

Common-Mode Input Voltage RangeIncludes VCC+

description

The JFET-input operational amplifiers in the TL07_ series are designed as low-noise versions of the TL08_series amplifiers with low input bias and offset currents and fast slew rate. The low harmonic distortion and lownoise make the TL07_ series ideally suited for high-fidelity and audio preamplifier applications. Each amplifierfeatures JFET inputs (for high input impedance) coupled with bipolar output stages integrated on a singlemonolithic chip.

The C-suffix devices are characterized for operation from 0°C to 70°C. The I-suffix devices are characterizedfor operation from –40°C to 85°C. The M-suffix devices are characterized for operation over the full militarytemperature range of –55°C to 125°C.

AVAILABLE OPTIONS

PACKAGE

TAVIOmaxAT 25°C

SMALLOUTLINE

(D)†

CHIPCARRIER

(FK)

CERAMICDIP(J)

CERAMICDIP(JG)

PLASTICDIP(N)

PLASTICDIP(P)

TSSOPPACKAGE

(PW)

FLATPACKAGE

(W)

10 mV TL071CD TL071CP TL071CPWLE10 mV6 mV

TL071CDTL071ACD — — — —

TL071CPTL071ACP

TL071CPWLE— —

3 mV TL071BCD TL071BCP —

0°C to10 mV TL072CD TL072CP TL072CPWLE

0°C to70°C

10 mV6 mV

TL072CDTL072ACD — — — —

TL072CPTL072ACP

TL072CPWLE— —

70°C3 mV TL072BCD TL072BCP —

10 mV TL074CD TL074CN TL074CPWLE10 mV6 mV

TL074CDTL074ACD — — —

TL074CNTL074ACN —

TL074CPWLE— —

3 mV TL074BCD TL074BCN —

40°C toTL071ID — TL071IP

–40°C to85°C

6 mVTL071IDTL072ID — — — —

TL071IPTL072IP — —

85°CTL074ID TL074IN —

55°C to6 mV TL071MFK — TL071MJG — — —

–55°C to125°C 6 mV — TL072MFK — TL072MJG — TL072MP — —125 C

9 mV TL074MFK TL074MJ — TL074MN — TL074MW

† The D package is available taped and reeled. Add the suffix R to the device type (e.g., TL071CDR). The PW package is only available left-endedtaped and reeled (e.g., TL072CPWLE).

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications ofTexas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Copyright 1996, Texas Instruments IncorporatedPRODUCTION DATA information is current as of publication date.Products conform to specifications per the terms of Texas Instrumentsstandard warranty. Production processing does not necessarily includetesting of all parameters.

TL071, TL071A, TL071B, TL072TL072A, TL072B, TL074, TL074A, TL074BLOW-NOISE JFET-INPUT OPERATIONAL AMPLIFIERSSLOS080D – SEPTEMBER 1978 – REVISED AUGUST 1996

2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

NC2OUTNC2IN–NC

1IN+NC

VCC+NC

2IN+

NCVCC+NCOUTNC

3 2 1 20 19

9 10 11 12 13

4

5

6

7

8

18

17

16

15

14

NC1IN–

NC1IN+

NC

(TOP VIEW)N

C1O

UT

NC

NC

NC

NC

NC

2IN

+

CC

–V

CC

+V

1

2

3

4

5

6

7

14

13

12

11

10

9

8

1OUT1IN–1IN+

VCC +2IN+2IN–

2OUT

4OUT4IN–4IN+VCC –3IN+3IN–3OUT

TL074, TL074A, TL074BD, J, N, OR PW PACKAGE

TL074 . . . W PACKAGE(TOP VIEW)

NC – No internal connection

3 2 1 20 19

9 10 11 12 13

4

5

6

7

8

18

17

16

15

14

NCIN–NCIN+NC

TL071FK PACKAGE(TOP VIEW)

NC

OF

FS

ET

N1

NC

NC

NC

NC

NC

OF

FS

ET

N2

NC

CC

–V

TL072FK PACKAGE

3 2 1 20 19

9 10 11 12 13

4

5

6

7

8

18

17

16

15

14

4IN+NCVCC –NC3IN+

TL074FK PACKAGE(TOP VIEW)

1IN

–1O

UT

NC

3IN

–4I

N –

2IN

–

NC

3OU

T4O

UT

2OU

T

1

2

3

4

8

7

6

5

OFFSET N1IN–IN+

VCC –

NCVCC+

OUT

OFFSET N2

TL071, TL071A, TL071BD, JG, P, OR PW PACKAGE

(TOP VIEW)

1

2

3

4

8

7

6

5

1OUT1IN–1IN+

VCC –

VCC +2OUT2IN–2IN+

TL072, TL072A, TL072BD, JG, P, OR PW PACKAGE

(TOP VIEW)

symbols

+

–

+

–

IN+

IN–OUT

IN+

IN–OUT

TL072 (each amplifier)TL074 (each amplifier)

TL071

OFFSET N1

OFFSET N2




schematic (each amplifier)

C1

VCC+

IN +

VCC–

1080 Ω ÎÎÎ1080 Ω

IN –

TL071 Only

64 Ω128 Ω

64 Ω

All component values shown are nominal.

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

OFFSETNULL(N1)

ÁÁÁÁÁÁÁÁÁ

OFFSETNULL(N2)

OUT

18 pF

COMPONENT COUNT†

COMPONENTTYPE TL071 TL072 TL074

Resistors 11 22 44ResistorsTransistors

1114

2228

4456

JFET 2 4 6Diodes 1 2 4Capacitors 1 2 4epi-FET 1 2 4

† Includes bias and trim circuitry



absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†

Supply voltage, VCC+ (see Note 1) 18 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supply voltage, VCC– (see Note 1) –18 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Differential input voltage, VID (see Note 2) ±30 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage, VI (see Notes 1 and 3) ±15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Duration of output short circuit (see Note 4) unlimited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous total power dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range, TA: C suffix 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I suffix –40°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M suffix –55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Case temperature for 60 seconds: FK package 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: J, JG, or W package 300°C. . . . . . . . . . . . Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D, N, P, or PW package 260°C. . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, andfunctional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is notimplied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES: 1. All voltage values, except differential voltages, are with respect to the midpoint between VCC+ and VCC–.2. Differential voltages are at IN+ with respect to IN–.3. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 V, whichever is less.4. The output may be shorted to ground or to either supply. Temperature and /or supply voltages must be limited to ensure that the

dissipation rating is not exceeded.

DISSIPATION RATING TABLE

PACKAGETA ≤ 25°C

POWER RATINGDERATINGFACTOR

DERATEABOVE TA

TA = 70°CPOWER RATING



D (8 pin) 680 mW 5.8 mW/°C 33°C 465 mW 378 mW N/A

D (14 pin) 680 mW 7.6 mW/°C 60°C 604 mW 490 mW N/A

FK 680 mW 11.0 mW/°C 88°C 680 mW 680 mW 273 mW

J 680 mW 11.0 mW/°C 88°C 680 mW 680 mW 273 mW

JG 680 mW 8.4 mW/°C 69°C 672 mW 546 mW 210 mW

N 680 mW 9.2 mW/°C 76°C 680 mW 597 mW N/A

P 680 mW 8.0 mW/°C 65°C 640 mW 520 mW N/A

PW (8 pin) 525 mW 4.2 mW/°C 70°C 525 mW N/A N/A

PW (14 pin) 700 mW 5.6 mW/°C 70°C 700 mW N/A N/A

W 680 mW 8.0 mW/°C 65°C 640 mW 520 mW 200 mW



POST OFFICE BOX 655303 DALLAS, TEXAS 75265• 5

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electrical characteristics, VCC± = ±15 V (unless otherwise noted)

† ‡TL071M

TL074MPARAMETER TEST CONDITIONS† TA‡ TL072M

TL074MUNITA

MIN TYP MAX MIN TYP MAX

VIO Input offset voltage VO = 0 RS = 50 Ω25°C 3 6 3 9

mVVIO Input offset voltage VO = 0, RS = 50 ΩFull range 9 15

mV

αVIOTemperature coefficient ofinput offset voltage

VO = 0, RS = 50 Ω Full range 18 18 µV/°C

IIO Input offset current VO = 025°C 5 100 5 100 pA

IIO Input offset current VO = 0Full range 20 20 nA

IIB Input bias current‡ VO = 025°C 65 200 65 200 pA

IIB Input bias current‡ VO = 050 50 nA

VICRCommon-mode inputvoltage range

25°C ±11–12

to15

±11–12

to15

V

M i k t tRL = 10 kΩ 25°C ±12 ±13.5 ±12 ±13.5

VOMMaximum peak outputvoltage swing

RL ≥ 10 kΩFull range

±12 ±12 Vvoltage swing

RL ≥ 2 kΩFull range

±10 ±10

AVDLarge-signal differential

VO = ±10 V RL ≥ 2 kΩ25°C 35 200 35 200

V/mVAVDg g

voltage amplificationVO = ±10 V, RL ≥ 2 kΩ

15 15V/mV

B1 Unity-gain bandwidth TA = 25°C 3 3 MHz

ri Input resistance TA = 25°C 1012 1012 Ω

CMRRCommon-mode rejection VIC = VICRmin,

25°C 80 86 80 86 dBCMRR ratio VO = 0, RS = 50 Ω25°C 80 86 80 86 dB

kSVRSupply-voltage rejection VCC = ±9 V to ±15 V,

25°C 80 86 80 86 dBkSVR ratio (∆VCC± /∆VIO) VO = 0, RS = 50 Ω25°C 80 86 80 86 dB

ICCSupply current (eachamplifier)

VO = 0, No load 25°C 1.4 2.5 1.4 2.5 mA

VO1/VO2 Crosstalk attenuation AVD = 100 25°C 120 120 dB

† Input bias currents of a FET-input operational amplifier are normal junction reverse currents, which are temperature sensitive as shown inFigure 4. Pulse techniques must be used that will maintain the junction temperature as close to the ambient temperature as possible.

‡ All characteristics are measured under open-loop conditions with zero common-mode voltage unless otherwise specified. Full range isTA = –55°C to 125°C.




operating characteristics, VCC± = ±15 V, TA = 25°C

PARAMETER TEST CONDITIONSTL07xM ALL OTHERS

UNITPARAMETER TEST CONDITIONSMIN TYP MAX MIN TYP MAX

UNIT

SR Slew rate at unity gainVI = 10 V,CL = 100 pF,

RL = 2 kΩ,See Figure 1

5 13 8 13 V/µs

tRise time overshoot VI = 20 mV, RL = 2 kΩ, 0.1 0.1 µs

tr factorI ,

CL = 100 pF,L ,

See Figure 1 20% 20%

VEquivalent input noise

RS = 20 Ωf = 1 kHz 18 18 nV/√Hz

Vnq

voltageRS = 20 Ω

f = 10 Hz to 10 kHz 4 4 µV

InEquivalent input noisecurrent

RS = 20 Ω, f = 1 kHz 0.01 0.01 pA/√Hz

THDTotal harmonicdistortion

VIrms = 6 V,RL ≥ 2 kΩ,f = 1 kHz

AVD = 1,RS ≤ 1 kΩ , 0.003% 0.003%

PARAMETER MEASUREMENT INFORMATION

Figure 1. Unity-Gain Amplifier

VI

+

–

CL = 100 pF RL = 2 kΩ

VO

Figure 2. Gain-of-10 Inverting Amplifier

VI+

–

10 kΩ

1 kΩ

RL CL = 100 pF

VO

N1100 kΩ

+

– TL071

N2

1.5 kΩ

VCC–

OUT

IN–

IN+

Figure 3. Input Offset Voltage Null Circuit



TYPICAL CHARACTERISTICS

Table of GraphsFIGURE

IIB Input bias current vs Free-air temperature 4

vs Frequency 5, 6, 7

VOM Maximum output voltage

vs Frequencyvs Free-air temperature

5, 6, 78

VOM Maximum output voltagevs Load resistance 9vs Supply voltage 10

AVD Large signal differential voltage amplificationvs Free-air temperature 11

AVD Large-signal differential voltage amplificationvs Frequency 12

Phase shift vs Frequency 12

Normalized unity-gain bandwidth vs Free-air temperature 13

Normalized phase shift vs Free-air temperature 13

CMRR Common-mode rejection ratio vs Free-air temperature 14

ICC Supply currentvs Supply voltage 15

ICC Supply currenty g

vs Free-air temperature 16

PD Total power dissipation vs Free-air temperature 17

Normalized slew rate vs Free-air temperature 18

Vn Equivalent input noise voltage vs Frequency 19

THD Total harmonic distortion vs Frequency 20

Large-signal pulse response vs Time 21

VO Output voltage vs Elapsed time 22




TYPICAL CHARACTERISTICS†

Figure 4

IIB–

Inp

ut

Bia

s C

urr

ent

– n

A

TA – Free-Air Temperature – °C

INPUT BIAS CURRENTvs

FREE-AIR TEMPERATURE

IBI

10

1

0.1

0.01

100

–75 –50 –25 0 25 50 75 100 125

VCC± = ±15 V

Figure 5

VCC± = ±5 V

VCC± = ±15 V RL = 10 kΩTA = 25°CSee Figure 2

±15

±12.5

±10

±7.5

±5

±2.5

0

VO

M –

Max

imu

m P

eak

Ou

tpu

t V

olt

age

– V

f – Frequency – Hz100 1 k 10 k 100 k 1 M 10 M

MAXIMUM PEAK OUTPUT VOLTAGEvs

FREQUENCY

ÁÁÁÁÁÁV

OM

ÎÎÎÎÎÎÎÎÎÎ

VCC± = ±10 V

Figure 6

10 M1 M100 k10 k1 k100f – Frequency – Hz

VO

M –

Max

imu

m P

eak

Ou

tpu

t V

olt

age

– V

0

±2.5

±5

±7.5

±10

±12.5

±15

See Figure 2TA = 25°CRL = 2 kΩ

VCC± = ±10 V

VCC± = ±5 V


FREQUENCY

ÁÁÁÁÁÁ

V OM

ÎÎÎÎÎÎÎÎÎÎ

VCC± = ±15 V

Figure 7

0

±2.5

±5

±7.5

±10

±12.5

±15

10 k 40 k 100 k 400 k 1 M 4 M 10 Mf – Frequency – Hz


FREQUENCY

VO

M –

Max

imu

m P

eak

Ou

tpu

t V

olt

age

– V

ÁÁÁÁÁÁÁÁÁ

V OM

VCC± = ±15 VRL = 2 kΩSee Figure 2

ÎÎÎÎÎÎÎÎ

TA = –55°C

ÎÎÎÎÎÎÎÎ

TA = 25°C

TA = 125°C

† Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.




Figure 8

–750

VO

M –

Max

imu

m P

eak

Ou

tpu

t V

olt

age

– V


125

±15

–50 –25 0 25 50 75 100

±2.5

±5

±7.5

±10

±12.5

RL = 10 kΩ

VCC± = ±15 V

See Figure 2



ÁÁÁÁ

V OM

ÎÎÎÎÎÎÎÎ

RL = 2 kΩ

Figure 9

0.10

RL – Load Resistance – kΩ

10

±15

±2.5

±5

±7.5

±10

±12.5

VCC± = ±15 VTA = 25°CSee Figure 2

0.2 0.4 0.7 1 2 4 7


LOAD RESISTANCE

VO

M –

Max

imu

m P

eak

Ou

tpu

t V

olt

age

– V

ÁÁÁÁ

V OM

Figure 10

00

VO

M –

Max

imu

m P

eak

Ou

tpu

t V

olt

age

– V

|VCC±| – Supply Voltage – V

16

±15

2 4 6 8 10 12 14

±2.5

±5

±7.5

±10

±12.5

RL = 10 kΩTA = 25°C


SUPPLY VOLTAGE

ÁÁÁÁÁÁ

V OM

Figure 11

–751

Volt

age

Am

plif

icat

ion

– V

/mV


125

1000

–50 –25 0 25 50 75 100

2

4

10

20

40

100

200

400

VCC± = ±15 VVO = ±10 VRL = 2 kΩ

LARGE-SIGNALDIFFERENTIAL VOLTAGE AMPLIFICATION

vsFREE-AIR TEMPERATURE

AV

D –

Lar

ge-

Sig

nal

Dif

fere

nti

alA

VD






0°

45°

180°

135°

90°

11

f – Frequency – Hz10 M

106

10 100 1 k 10 k 100 k 1 M

101

102

103

104

105

DifferentialVoltageAmplification

VCC± = ±5 V to ±15 V

RL = 2 kΩTA = 25°C

Phase Shift

LARGE-SIGNALDIFFERENTIAL VOLTAGE AMPLIFICATION

AND PHASE SHIFTvs

FREQUENCY

Volt

age

Am

plif

icat

ion

AV

D –

Lar

ge-

Sig

nal

Dif

fere

nti

alA

VD

Ph

ase

Sh

ift

Figure 12

1.02

1.01

1

0.99

0.98

1.03

0.97–75

0.7

No

rmal

ized

Un

ity-

Gai

n B

and

wid

th

TA – Free-Air Temperature – °C125

1.3

–50 –25 0 25 50 75 100

0.8

0.9

1

1.1

1.2 Unity-Gain Bandwidth

VCC± = ±15 VRL = 2 kΩf = B1 for Phase Shift

NORMALIZED UNITY-GAIN BANDWIDTHAND PHASE SHIFT

vsFREE-AIR TEMPERATURE

No

rmal

ized

Ph

ase

Sh

ift

Phase Shift

Figure 13





Figure 14

–7583

CM

RR

– C

om

mo

n-M

od

e R

ejec

tio

n R

atio

– d

B


125

89

–50 –25 0 25 50 75 100

84

85

86

87

88

VCC± = ±15 V

RL = 10 kΩ

COMMON-MODE REJECTION RATIOvs


Figure 15

00

|VCC±| – Supply Voltage – V

16

2

2 4 6 8 10 12 14

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8TA = 25°CNo SignalNo Load

SUPPLY CURRENT PER AMPLIFIERvs

SUPPLY VOLTAGE

ICC

– S

up

ply

Cu

rren

t P

er A

mp

lifie

r –

mA

ÁÁÁÁ

CC

±I

Figure 16

–750


125

2

–50 –25 0 25 50 75 100

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8VCC± = ±15 VNo SignalNo Load

SUPPLY CURRENT PER AMPLIFIERvs


ICC

– S

up

ply

Cu

rren

t P

er A

mp

lifie

r –

mA

ÁÁÁÁÁÁÁÁÁ

CC

±I

Figure 17

–750


250

–50 –25 0 25 50 75 100

25

50

75

100

125

150

175

200

225VCC± = ±15 VNo SignalNo Load

TL074

TL071

TOTAL POWER DISSIPATIONvs


ÎÎÎÎÎÎ

TL072

PD

– T

ota

l Po

wer

Dis

sip

atio

n –

mW

PD






Figure 18

–750.85


1.15

–50 –25 0 25 50 75 100

0.90

0.95

1

1.05

1.10

NORMALIZED SLEW RATEvs


VCC± = ±15 VRL = 2 kΩCL = 100 pFs

µN

orm

aliz

ed S

lew

Rat

e –

V/

Figure 19

100

Vn

– E

qu

ival

ent

Inp

ut

No

ise

Vo

ltag

e –

nV

/Hz

f – Frequency – Hz100 k

50

10

20

30

40

VCC± = ±15 VAVD = 10RS = 20 ΩTA = 25°C

40 100 400 1 k 4 k 10 k 40 k

EQUIVALENT INPUT NOISE VOLTAGEvs

FREQUENCYÁÁÁÁÁÁÁÁÁÁÁÁ

nV

/H

zV

n

Figure 20

0.001

TH

D –

To

tal H

arm

on

ic D

isto

rtio

n –

%

1

40 k10 k4 k1 k400 100 kf – Frequency – Hz

100

0.004

0.01

0.04

0.1

0.4

TOTAL HARMONIC DISTORTIONvs

FREQUENCY

VCC± = ±15 VAVD = 1VI(RMS) = 6 V

TA = 25°C

Figure 21

–6

t – Time – µs3.5

6

0 0.5 1 1.5 2 2.5 3

–4

–2

0

2

4

Output

ÎÎÎÎÎÎ

Input

VCC± = ±15 VRL = 2 kΩ

TA = 25°C

VOLTAGE-FOLLOWERLARGE-SIGNAL PULSE RESPONSE

CL = 100 pF

ÁÁÁÁV

O

ÁÁÁÁ

VI

– In

pu

t an

d O

utp

ut

Vo

ltag

es –

Van

d




10%

–4

VO

– O

utp

ut

Vo

ltag

e –

mV

t – Elapsed Time – µs0.7

28

0 0.1 0.2 0.3 0.4 0.5 0.6

0

4

8

12

16

20

24

VCC± = ±15 VRL = 2 kΩTA = 25°Ctr

Overshoot

90%

OUTPUT VOLTAGEvs

ELAPSED TIME

ÁÁÁÁÁÁ

VO

Figure 22




APPLICATION INFORMATION

Table of Application Diagrams

APPLICATION DIAGRAMPART

NUMBERFIGURE

0.5-Hz square-wave oscillator TL071 23

High-Q notch filter TL071 24

Audio-distribution amplifier TL074 25

100-kHz quadrature oscillator TL072 26

AC amplifier TL071 27

Figure 23. 0.5-Hz Square-Wave Oscillator

+

–

–15 V

15 VOutput

1 kΩ

9.1 kΩ3.3 kΩ

CF = 3.3 µF

RF = 100 kΩ

3.3 kΩ

TL071

f 12 RF CF

Figure 24. High-Q Notch Filter

+

–

R2R1

C1 C2R3

C3 VCC–

VCC+

TL071OutputInput

C1 C2 C32 110 pF

fO1

2 R1 C1 1 kHz

R1 R2 2R3 1.5 M

100 µF

+

–

+

–

TL074 Output C

VCC+

VCC+

Output BTL074

–

+

VCC+

Output ATL074

–

+VCC+

TL074

VCC+100 kΩ

Input

1 µF

1 MΩ

100 kΩ

100 kΩVCC–

100 kΩ

VCC–

VCC–

VCC–

Figure 25. Audio-Distribution Amplifier



APPLICATION INFORMATION

–15 V6 sin ωt

+

–

6 cos ωt

+

–

88.4 kΩ

VCC+

VCC–

VCC+

VCC–

1N4148

18 pF

18 pF

1 kΩ

18 kΩ (see Note A)

15 V

TL072

TL072

88.4 kΩ

88.4 kΩ

18 pF

1 kΩ

18 kΩ (see Note A)1N4148

NOTE A: These resistor values may be adjusted for a symmetrical output.

Figure 26. 100-kHz Quadrature Oscillator

0.1 µF

0.1 µF

+

–

10 kΩ

50 Ω

100 kΩ

N1

OUT

1 MΩ

VCC+

10 kΩ

10 kΩ

TL071

N2

IN–

IN+

Figure 27. AC Amplifier

IMPORTANT NOTICE

Texas Instruments (TI) reserves the right to make changes to its products or to discontinue any semiconductorproduct or service without notice, and advises its customers to obtain the latest version of relevant informationto verify, before placing orders, that the information being relied on is current.

TI warrants performance of its semiconductor products and related software to the specifications applicable atthe time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques areutilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of eachdevice is not necessarily performed, except those mandated by government requirements.

Certain applications using semiconductor products may involve potential risks of death, personal injury, orsevere property or environmental damage (“Critical Applications”).

TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED, OR WARRANTEDTO BE SUITABLE FOR USE IN LIFE-SUPPORT APPLICATIONS, DEVICES OR SYSTEMS OR OTHERCRITICAL APPLICATIONS.

Inclusion of TI products in such applications is understood to be fully at the risk of the customer. Use of TIproducts in such applications requires the written approval of an appropriate TI officer. Questions concerningpotential risk applications should be directed to TI through a local SC sales office.

In order to minimize risks associated with the customer’s applications, adequate design and operatingsafeguards should be provided by the customer to minimize inherent or procedural hazards.

TI assumes no liability for applications assistance, customer product design, software performance, orinfringement of patents or services described herein. Nor does TI warrant or represent that any license, eitherexpress or implied, is granted under any patent right, copyright, mask work right, or other intellectual propertyright of TI covering or relating to any combination, machine, or process in which such semiconductor productsor services might be or are used.

Copyright 1996, Texas Instruments Incorporated

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