Electrical Characteristics (Continued)

(V

+ =5V

DC; specifications apply to both amplifiers unless otherwise stated) (Note 5)

Parameter

Conditions

LM392

Units

Min

Typ

Max

OP AMP ONLY

Large Signal Voltage Gain

V

+ =15V

DC,Vo swing=1VDC to 11 VDC,

R

L =2k

Ω,T

A = 25˚C

25

100

V/mV

Output Voltage Swing

R

L =2k

Ω,T

A = 25˚C

0

V

+−1.5

V

Common-Mode Rejection Ratio

DC, T

A = 25˚C, VCM=0,VDC to V

+−1.5 V

DC

65

70

dB

Power Supply Rejection Ratio

DC, T

A = 25˚C

65

100

dB

Output Current Source

V

IN(+) =1VDC,VIN(−) =0VDC,

V

+ =15V

DC,Vo =2VDC,TA = 25˚C

20

40

mA

Output Current Sink

V

IN(−) =1VDC,VIN(+) =0VDC,

V

+ =15V

DC,Vo =2VDC,TA = 25˚C

10

20

mA

V

IN(−) =1VDC,VIN(+) =0VDC,

V

+ =15V

DC,Vo =200 mV, TA = 25˚C

12

50

µA

Input Offset Voltage Drift

R

S =0

Ω

7

µV/˚C

Input Offset Current Drift

R

S =0

Ω

10

pA

DC/˚C

COMPARATOR ONLY

Voltage Gain

R

L

≥ 15 kΩ,V+ =15V

DC,TA = 25˚C

50

200

V/mV

Large Signal Response Time

V

IN = TTL Logic Swing, VREF = 1.4 VDC

V

RL =5VDC,RL = 5.1 k

Ω,T

A = 25˚C

300

ns

Response Time

V

RL =5VDC,RL = 5.1 k

Ω,T

A = 25˚C

1.3

µs

Output Sink Current

V

IN(−) =1 VDC,VIN(+) =0VDC,

V

O

≥1.5 V

DC,TA = 25˚C

616

mA

Saturation Voltage

V

IN(−)

≥ 1V

DC,VIN(+) =0,

I

SINK

≤ 4 mA, T

A = 25˚C

250

400

mV

V

IN(−)

≥ 1V

DC,VIN(+) =0,

I

SINK

≤ 4mA

700

mV

Output Leakage Current

V

IN(−) =0,VIN(+)

≥ 1V

DC,

V

o =5VDC,TA = 25˚C

0.1

nA

V

IN(−) =0,VIN(+)

≥ 1V

DC,

V

o =30VDC

1.0

µA

Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is

functional, but do not guarantee specific performance limits.

Note 2: For operating at temperatures above 25˚C, the LM392 must be derated based on a 125˚C maximum junction temperature and a thermal resistance of

122˚C/W which applies for the device soldered in a printed circuit board, operating in still air ambient. The dissipation is the total of both amplifiers — use external

resistors, where possible, to allow the amplifier to saturate or to reduce the power which is dissipated in the integrated circuit.

Note 3: Short circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum output

current is approximately 40 mA for the op amp and 30 mA for the comparator independent of the magnitude of V+. At values of supply voltage in excess of 15V,

continuous short circuits can exceed the power dissipation ratings and cause eventual destruction.

Note 4: 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 amplifiers 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 (at 25˚C).

Note 5: These specifications apply for V+ = 5V, unless otherwise stated. For the LM392, temperature specifications are limited to 0˚C

≤ TA ≤ +70˚C.

Note 6: At output switch point, VO . 1.4V, RS =0Ω with V

+ from 5V to 30V; and over the full input common-mode range (0V to V+ − 1.5V).

Note 7: 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 outputso

no loading change exists on the input lines.

Note 8: The input common-mode voltage or 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 V+ − 1.5V, but either or both inputs can go to 32V without damage.

Note 9: Due to proximity of external components, insure that coupling is not originating via the stray capacitance between these external parts. This typically can

be detected as this type of capacitive coupling increases at higher frequencies.

Note 10: Positive excursions of input voltage may exceed the power supply level. As long as the other input voltage remains within the common-mode range, the

comparator will provide a proper output state. The input voltage to the op amp should not exceed the power supply level. The input voltage state must not be less

than −0.3V (or 0.3V below the magnitude of the negative power supply, if used) on either amplifier.

Note 11: The response time specified is for a 100 mV input step with 5 mV overdrive. For larger overdrive signals 300 ns can be obtained.