OPA170AIDBVT datasheet(22/64 Pages) TI2

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OPA170, OPA2170, OPA4170

SBOS557E – AUGUST 2011 – REVISED APRIL 2018

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8.4 Device Functional Modes

8.4.1 Common-Mode Voltage Range

The input common-mode voltage range of the OPAx170 series extends 100 mV below the negative rail and

within 2 V of the top rail for normal operation.

This device can operate with full rail-to-rail input 100 mV beyond the top rail, but with reduced performance within

2 V of the top rail. The typical performance in this range is summarized in Table 2.

Table 2. Typical Performance for Common-Mode Voltages Within 2 V of the Positive Supply

PARAMETER

MIN

TYP

MAX

UNIT

Input common-mode voltage

(V+) – 2

(V+) + 0.1

Offset voltage

vs temperature

µV/°C

Common-mode rejection

Open-loop gain

Gain-bandwidth product

0.3

MHz

Slew rate

0.3

V/µs

8.4.2 Overload Recovery

Overload recovery is defined as the time required for the operational amplifier output to recover from the

saturated state to the linear state. The output devices of the operational amplifier enter the saturation region

when the output voltage exceeds the rated operating voltage, either resulting from the high input voltage or the

high gain. After the device enters the saturation region, the charge carriers in the output devices need time to

return back to the normal state. After the charge carriers return back to the equilibrium state, the device begins to

slew at the normal slew rate. Thus, the propagation delay in case of an overload condition is the sum of the

overload recovery time and the slew time. The overload recovery time for the OPAx170 is approximately 2 µs.

OPA170AIDBVT Datasheet(PDF) 22 Page - Texas Instruments