LM2903DT datasheet(3/9 Pages) STMICROELECTRONICS

Part #	LM2903DT

Description	LOW POWER DUAL VOLTAGE COMPARATORS

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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LM2903

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ELECTRICAL CHARACTERISTICS

VCC

+ = 5V, V

cc

- = GND, T

amb = 25°C (unless otherwise specified)

Symbol

Parameter

Min.

Typ.

Max.

Unit

VIO

Input Offset Voltage 1)

Tamb = +25°C

Tmin ≤ Tamb ≤ Tmax.

1.

At output switch point, VO ≈ 1.4V, RS = 0Ω with VCC

+ from 5V to 30V, and over the full input common-mode range (0V to V

CC

+ –1.5V).

17

15

mV

IIO

Input Offset Current

Tamb = +25°C

Tmin ≤ Tamb ≤ Tmax.

550

150

nA

IIB

Input Bias Current 2)

Tamb = +25°C

Tmin ≤ Tamb ≤ Tmax.

2.

The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the

output, so no loading charge exists on the reference of input lines

25

250

400

nA

AVD

Large Signal Voltage Gain (Vcc = 15V,RL=15kΩ, Vo=1 to 11V)

25

200

V/mV

ICC

Supply Current (all comparators)

VCC = 5V, no load

VCC = 30V, no load

0.4

1

2.5

mA

VICM

Input Common Mode Voltage Range (Vcc= 30V)

3)

Tamb = +25°C

Tmin ≤ Tamb ≤ Tmax.

3.

The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the

common-mode voltage range is VCC

+ –1.5V, but either or both inputs can go to +30V without damage.

0

VCC

+-1.5

VCC

+-2

V

VID

Differential Input Voltage 4)

4.

Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range, the

comparator will provide a proper output state.

The low input voltage state must not be less than –0.3V (or 0.3V below the negative power supply, if used)

VCC

+

V

VOL

Low Level Output Voltage (Vid = -1V, Isink = 4mA)

Tamb = +25°C

Tmin ≤ Tamb ≤ Tmax

250

400

700

mV

IOH

High Level Output Current (VCC =Vo =30V, Vid = 1V)

Tamb = +25°C

Tmin ≤ Tamb ≤ Tmax

0.1

1

nA

µA

ISINK

Output Sink Current (Vid = -1V,Vo = 1.5V)

616

m

Α

tRE

Small Signal Response Time 5) (RL = 5.1kΩ to VCC

+)

5.

The response time specified is for a 100mV input step with 5mV overdrive.

1.3

µs

tREL

Large Signal Response Time 6)

TTL Input (Vref = +1.4 V, RL=5.1kΩ to VCC

+)

Output Signal at 50% of final value

Output Signal at 95 % of final value

6.

Maximum values are guaranteed by design & evaluation.

500

1

ns

µs

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