ST LM2904WH User Manual

LM2904WH

Low power dual operational amplifier

Features

■Internally frequency compensated

■Large DC voltage gain: 100 dB

■Wide bandwidth (unity gain: 1.1 MHz temperature compensated)

■Very low supply current per operator (500 µA)

■Low input bias current: 20 nA (temperaturecompensated)

■Low input offset current: 2 nA

■Input common-mode voltage range includes ground

■Differential input voltage range equal to the power supply voltage

■Large output voltage swing 0 V to VCC - 1.5 V

■Internal ESD protection:

–2 kV HBM

–200 V MM

Description

This circuit consists of two independent, highgain, internally frequency-compensated operational amplifiers, designed specifically for automotive and industrial control systems. It operates from a single power supply over a wide range of voltages. The low power supply drain is independent of the magnitude of the power supply voltage.

Application areas include transducer amplifiers, DC gain blocks and all the conventional op-amp circuits which now can be more easily implemented in single power supply systems. For example, these circuits can be directly supplied from standard +5 V which is used in logic systems and will easily provide the required interface electronics without requiring any additional power supply.

In linear mode, the input common-mode voltage range includes ground and the output voltage can

Datasheet — production data

SO-8

(Plastic micropackage)

Wafer form

also swing to ground, even though operated from a single power supply.

July 2012

Doc ID 9876 Rev 7

1/12

This is information on a product in full production.

www.st.com

Schematic diagram	LM2904WH

1 Schematic diagram

Figure 1. Schematic diagram (1/2 LM2904WH)

Figure 2. Pad locations

E+ (2)

	E- (2)
y	Die id.
	OUT 2
	x


		Name	Pad placement		Pad dimensions
GND	E+ (1)

			X	Y	X	Y

		GND	480	1040	102	102

		E+1	940	1030	102	102

		E-1	1010	620	102	102
	E- (1)	OUT1	910	55	102	102
		OUT1	910	55	102	102

		Vcc +	480	70	102	102

year		OUT2	55	55	102	102

		E-2	-30	620	102	102
		E-2	-30	620	102	102

		E+2	-30	1030	102	102

Vcc +	OUT 1

The origin coordinate is at the bottom left part of the

OUT2 pin. All dimensions are specified in micrometers (µm).

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LM2904WH	Absolute maximum ratings and operating conditions

2 Absolute maximum ratings and operating conditions

Table 1.	Absolute maximum ratings
Symbol		Parameter	Value	Unit

+		Supply voltage	+32	V
VCC		Supply voltage	+32	V
Vid		Differential input voltage	-0.3 to VCC+0.3	V
Vin		Input voltage	-0.3 to VCC+0.3	V
		Output short-circuit to ground(1)	40	mA
Tj		Maximum junction temperature	150	°C
Rthja		Thermal resistance junction to ambient (2)	125	°C/W
Rthja		SO-8	125	°C/W
Rthjc		Thermal resistance junction to case (2)	40	°C/W
Rthjc		SO-8	40	°C/W
Iin		Input current (3)	5	mA
Tstg		Storage temperature range	-65 to +150	°C
		HBM: human body model(4)	2	kV
ESD		MM: machine model(5)	200	V
		CDM: charged device model(6)	1.5	kV

1.Short-circuits from the output to VCC can cause excessive heating if VCC+ > 15 V. The maximum output current is approximately 40 mA, independent of the magnitude of VCC. Destructive dissipation can result from simultaneous short-circuits on all amplifiers.

2.Short-circuits can cause excessive heating and destructive dissipation. Values are typical.

3.This input current only exists when the voltage values applied on the inputs is beyond the supply voltage line limits. This is not destructive if the current does not exceed 5 mA as indicated, and normal output is restored for input voltages above -0.3V.

4.Human body model: A 100pF capacitor is charged to the specified voltage, then discharged through a 1.5kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating.

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

6.Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all pins.

Table 2.	Operating conditions
Symbol					Parameter	Value		Unit

+	Supply voltage					3 to 30		V
VCC	Supply voltage					3 to 30		V
Toper	Operating free-air temperature range					-40 to +150		°C
	Input common mode voltage range
Vicm	(VCC+=+30V)(1)						+ -1.5	V
Vicm	T	amb	= 25°C			0 to V	+ -1.5	V
		amb				CC
	T	min	≤ T	≤ T	max	0 to V	+ -2
		min	amb		max		CC

1.The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3 V. The upper end of the common-mode voltage range is VCC+ –1.5 V, but either or both inputs can go to +32 V without damage.

Doc ID 9876 Rev 7

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Electrical characteristics	LM2904WH

3 Electrical characteristics

Table 3.

+ = 5V, V

- = Ground, V = 1.4V, T

amb

= 25°C (unless otherwise

specified)

Symbol

Parameter

Min.

Typ.

Max.

Unit

Vio

Input offset voltage (1)

Tmin ≤ Tamb ≤ Tmax

Iio

Input offset current

Tmin ≤ Tamb ≤ Tmax

Iib

Input bias current (2)

150

Tmin ≤ Tamb ≤ Tmax

200

Large signal voltage gain

Avd

VCC+ = +15V,RL=2kΩ, Vo = 1.4V to 11.4V

100

V/mV

Tmin ≤ Tamb ≤ Tmax

2.5

Supply voltage rejection ratio

SVR

VCC+ = +5 to +30V, RS ≤ 10kΩ

100

Tmin ≤ Tamb ≤ Tmax

Supply current, all amps, no load

ICC

VCC+ = +5V

0.7

1.2

Tmin ≤ Tamb ≤ Tmax, VCC = +30V

CMR

Common-mode rejection ratio (RS = 10kΩ)

Tmin ≤ Tamb ≤ Tmax

Output short-circuit current

source

+= +15V, V

= +2V, V

= +1V

Tmin ≤ Tamb ≤ Tmax

Output sink current

VO = 2V, VCC+ = +5V

Isink

Tmin ≤ Tamb ≤ Tmax

VO = +0.2V, VCC+ = +15V

µA

Tmin ≤ Tamb ≤ Tmax

VOPP

Output voltage

swing (RL = 2kΩ)

VCC+ -1.5

Tmin ≤ Tamb ≤ Tmax

VCC+ -2

High level output voltage (VCC+ = + 30V)

RL = 2kΩ

VOH

Tmin ≤ Tamb ≤ Tmax

RL = 10kΩ

Tmin ≤ Tamb ≤ Tmax

VOL

Low level output voltage (RL = 10kΩ)

Tmin ≤ Tamb ≤ Tmax

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