ST TL071 User Manual

TL071

Low noise JFET single operational amplifier

Features

■Wide common-mode (up to VCC+) and differential voltage range

■Low input bias and offset currenT

■Low noise en = 15 nV/ √Hz (typ)

■Output short-circuit protection

■High input impedance JFET input stage

■Low harmonic distortion: 0.01 % (typ)

■Internal frequency compensation

■Latch-up free operation

■High slew rate: 16 V /µs (typ)

Description

The TL071 is a high-speed JFET input single operational amplifier. This JFET input operational amplifier incorporates well matched, high-voltage JFET and bipolar transistors in a monolithic integrated circuit.

The device features high slew rates, low input bias and offset currents, and low offset voltage temperature coefficient.

N

DIP8

(Plastic package)

D

SO-8

(Plastic micropackage)

Pin connections

(Top view)

1	8
2	7
3	6
4	5

1 - Offset null 1

2 - Inverting input

3- Non-inverting input

4- VCC-

5- Offset null 2

6- Output

7- VCC+

8- N.C.

September 2008

Rev 3

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www.st.com

Schematic diagram	TL071

1 Schematic diagram

Figure 1. Circuit schematics

V CC
Non-inverting
input
Inverting
input
100 Ω	Ω
200
	Output
100 Ω
30k

8.2k

1.3k	35k	1.3k	35k	100 Ω
V CC
Offset Null1		Offset Null2

Figure 2. Input offset voltage null circuit

TL071

N1

N2

100k Ω

V CC

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TL071	Absolute maximum ratings and operating conditions

2 Absolute maximum ratings and operating conditions

	Table 1.	Absolute maximum ratings
	Symbol	Parameter		Value		Unit
			TL071M, AM, BM	TL071I, AI, BI	TL071C, AC, BC
	V	Supply voltage (1)		±18		V
	CC
	Vi	Input voltage (2)		±15		V
	Vid	Differential input voltage (3)		±30		V
		Thermal resistance junction to
	Rthja	ambient(4) (5)		125		°C/W
		SO-8
		DIP8		85
		Thermal resistance junction to
	Rthjc	case(4) (5)		40		°C/W
		SO-8
				41
		DIP8
		Output short-circuit duration (6)		Infinite
	Toper	Operating free-air temperature range	-55 to +125	-40 to +105	0 to +70	°C
	Tstg	Storage temperature range		-65 to +150		°C
		HBM: human body model(7)		500		V
	ESD	MM: machine model(8)		200		V
		CDM: charged device model(9)		1500		V

1.All voltage values, except differential voltage, are with respect to the zero reference level (ground) of the supply voltages where the zero reference level is the midpoint between VCC+ and VCC-.

2.The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 volts, whichever is less.

3.Differential voltages are the non-inverting input terminal with respect to the inverting input terminal.

4.Short-circuits can cause excessive heating. Destructive dissipation can result from simultaneous short-circuits on all amplifiers.

5.Rth are typical values.

6.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.

7.Human body model: 100 pF discharged through a 1.5 kΩ resistor between two pins of the device, done for all couples of pin combinations with other pins floating.

8.Machine model: a 200 pF cap is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 Ω), done for all couples of pin combinations with other pins floating.

9.Charged device model: all pins plus package are charged together to the specified voltage and then discharged directly to the ground.

Table 2.	Operating conditions
Symbol		Parameter	TL071I, AI, BI	TL071C, AC, BC	Unit
VCC		Supply voltage	6 to 36		V
Toper		Operating free-air temperature range	-40 to +105	0 to +70	°C

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Electrical characteristics															TL071
3	Electrical characteristics
Table 3.	VCC = ±15V, Tamb = +25°C (unless otherwise specified)
					TL071I,M,AC,AI,AM,						TL071C
Symbol		Parameter				BC,BI,BM									Unit
					Min.		Typ.	Max.		Min.		Typ.	Max.
	Input offset voltage (Rs = 50Ω)
	Tamb = +25°C		TL071				3		10			3		10
Vio			TL071A				3		6						mV
	Tmin ≤ Tamb ≤ Tmax		TL071B				1		3
			TL071						13					13
			TL071A						7
			TL071B						5
DVio	Input offset voltage drift						10					10			μV/°C
	Input offset current
Iio	T	= +25°C					5		100			5		100	pA
	amb	≤ Tamb ≤ Tmax
	Tmin								4					10	nA
	Input bias current (1)
Iib	Tamb	= +25°C					20		200			20		200	pA
	Tmin	≤Tamb ≤Tmax							20					20	nA
Avd	Large signal voltage gain (RL= 2kΩ, Vo= ±10V)														V/mV
	T	= +25°C			50		200			25		200
	amb	≤ Tamb ≤ Tmax
	Tmin				25					15
SVR	Supply voltage rejection ratio (RS = 50Ω)														dB
	Tamb	= +25°C			80		86			70		86
	Tmin	≤ Tamb ≤ Tmax			80					70
	Supply current, no load
ICC	Tamb	= +25°C					1.4		2.5			1.4		2.5	mA
	Tmin	≤ Tamb ≤ Tmax							2.5					2.5
Vicm	Input common mode voltage range				±11		+15			±11		+15			V
							-12					-12
CMR	Common mode rejection ratio (RS = 50Ω)														dB
	Tamb	= +25°C			80		86			70		86
	Tmin	≤ Tamb ≤ Tmax			80					70
	Output short-circuit current
Ios	T	= +25°C			10		40		60	10		40		60	mA
	amb	≤ Tamb ≤ Tmax
	Tmin				10				60	10				60
	Output voltage swing
±Vopp	Tamb = +25°C		RL = 2kΩ		10		12			10		12			V
			R = 10kΩ		12		13.5			12		13.5
			L
	Tmin ≤ Tamb ≤ Tmax		RL = 2kΩ		10					10
			RL = 10kΩ		12					12
SR	Slew rate				8		16			8		16			V/μs
	Vin = 10V, RL = 2kΩ, CL = 100pF, unity gain

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TL071						Electrical characteristics
Table 3.	VCC = ±15V, Tamb = +25°C (unless otherwise specified) (continued)
		TL071I,M,AC,AI,AM,					TL071C
Symbol	Parameter		BC,BI,BM							Unit
		Min.		Typ.	Max.	Min.		Typ.	Max.
tr	Rise time			0.1				0.1		μs
	Vin = 20mV, RL = 2kΩ, CL = 100pF, unity gain
Kov	Overshoot			10				10		%
	Vin = 20mV, RL = 2kΩ, CL = 100pF, unity gain
GBP	Gain bandwidth product	2.5		4		2.5		4		MHz
	Vin = 10mV, RL = 2kΩ, CL = 100pF, f= 100kHz
R	Input resistance			1012				1012		W
i
	Total harmonic distortion,
THD	f= 1kHz, RL= 2kΩ,CL = 100pF, Av = 20dB,			0.01				0.01		%
	Vo = 2Vpp)
en	Equivalent input noise voltage			15				15		nV
	RS = 100Ω, f = 1KHz									-----------
										Hz
m	Phase margin			45				45		degrees

1.The input bias currents are junction leakage currents which approximately double for every 10°C increase in the junction temperature.

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