LM2903W datasheet(4/13 Pages) STMICROELECTRONICS

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Electrical characteristics

LM2903W

4/13

Doc ID 022662 Rev 1

Electrical characteristics

Table 3.

VCC

+ = 5 V, V

- = GND, 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

550

150

Iib

Input bias current (2)

Tmin ≤ Tamb ≤ Tmax

250

400

Avd

Large signal voltage gain

VCC = 15 V, RL = 15 kΩ, Vo = 1 to 11 V

200

V/mV

ICC

Supply current (all comparators)

VCC = 5 V, no load

VCC = 30 V, no load

0.4

2.5

Vid

Differential input voltage (3)

VCC

VOL

Low level output voltage (Vid = -1 V, Isink = 4 mA)

Tmin ≤ Tamb ≤ Tmax

250

400

700

IOH

High level output current (VCC = Vo = 30 V, Vid = 1 V)

Tmin ≤ Tamb ≤ Tmax

0.1

µA

Isink

Output sink current (Vid = -1 V, Vo = 1.5 V)

tres

Small signal response time (4) (RL = 5.1 kΩ to VCC

+)1.3

µs

trel

Large signal response time (5)

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

Output signal at 50% of final value

Output signal at 95% of final value

500

µs

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

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

(0 V to VCC

+ –1.5 V).

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.

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

–0.3 V (or 0.3 V below the negative power supply, if used).

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

Maximum values are guaranteed by design and evaluation.

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