Philips AU2903N, AU2903D Datasheet

Philips Semiconductors Linear Products Product specification

AU2903

Low power dual voltage comparator

300

August 31, 1994 853-1636 13721

DESCRIPTION

The AU2903 consists of two independent precision voltage
comparators with an offset voltage specification as low as 2.0mV
max. for two comparators which were designed specifically to
operate from a single power supply over a wide range of voltages.
Operation from split power supplies is also possible and the low
power supply current drain is independent of the magnitude of the
power supply voltage. These comparators also have a unique
characteristic in that the input common-mode voltage range includes
ground, even though operated from a single power supply voltage.

FEATURES

•Wide single supply voltage range 2.0V

DC

to 36VDC or dual

supplies ±1.0V

DC

, to ±18V

DC

•Very low supply current drain (0.8mA) independent of supply

voltage (2.0mW/comparator at 5.0V

DC

)

•Low input biasing current 25nA

•Low input offset current ±5nA and offset voltage ±2mV

•Input common-mode voltage range includes ground

•Differential input voltage range equal to the power supply voltage

•Low output 250mV at 4mA saturation voltage

•Output voltage compatible with TTL, DTL, ECL, MOS and CMOS

logic systems

APPLICATIONS

•A/D converters

•Wide range VCO

•MOS clock generator

•High voltage logic gate

•Multivibrators

PIN CONFIGURATION

1

2

3

4 5

6

7

8

D and N Packages

A B

TOP VIEW

OUTPUT A

INVERTING INPUT A

NON–INVERTING INPUT A

GND

V+

OUTPUT B

INVERTING INPUT B

NON–INVERTING INPUT B

EQUIVALENT CIRCUIT

V

+

100µA3.5µA 3.5µA 100µA

Q1

Q2 Q3

Q4

Q8

Q7

Q6Q5

– INPUT

OUTPUT

+

INPUT

(1 Comparator Only)

ORDERING INFORMATION

DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG #

8-Pin Plastic Small Outline (SO) Package -40°C to +125°C AU2903D 0174C
8-Pin Plastic Dual In-Line Package (DIP) -40°C to +125°C AU2903N 0404B

Philips Semiconductors Linear Products Product specification

AU2903

Low power dual voltage comparator

August 31, 1994

301

ABSOLUTE MAXIMUM RATINGS

SYMBOL PARAMETER RATING UNIT

V

CC

Supply voltage 36 or ±18 V

DC

Differential input voltage 36 V

DC

V

IN

Input voltage -0.3 to +36 V

DC

P

DMAX

Maximum power dissipation,
TA=25°C (still-air)

3

N package 1160 mW
D package 780 mW

Output short-circuit to ground

1

Continuous

I

IN

Input current (VIN<-0.3VDC)

2

50 mA

T

A

Operating temperature range

AU2903 -40 to +125 °C

T

STG

Storage temperature range -65 to +150 °C

T

SOLD

Lead soldering temperature (10sec max) 300 °C

NOTES:

1. Short circuits from the output to V+ can cause excessive heating and eventual destruction. The maximum output current is approximately
20mA independent of the magnitude of V+.

2. This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the
input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral
NPN parasitic transistor action on the IC chip. This transistor action can cause the output voltages of the comparators to go to the V+ voltage
level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive and normal output states
will re-establish when the input voltage, which was negative, again returns to a value greater than -0.3V

DC

.

3. Derate above 25°C, at the following rates:

N package at 9.3mW/°C
D package at 6.2mW/°C