6.5 Electrical Characteristics (continued)

at TA = 25°C, VS (dual supply) = ±1.5 V to ±18 V, VVOCM = 0 V, input common mode voltage (VICM) = 0 V, RF = 2

kΩ, V PD = VVS+, RL = 10 kΩ(1) (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

INPUT VOLTAGE

Common-mode voltage

TA = –40°C to +125°C

VVS– + 1

VVS+ – 1

V

CMRR

Common-mode rejection ratio

VVS– + 1 V ≤ VICM ≤ VVS+ – 1 V

140

VVS– + 1 V ≤ VICM ≤ VVS+ – 1 V, VS = ±18 V

126

140

dB

VVS– + 1 V ≤ VICM ≤ VVS+ – 1 V, VS = ±18 V

TA = –40°C to +125°C

120

INPUT IMPEDANCE

Input impedance differential

mode

VICM = 0 V

1 || 1

GΩ || pF

OPEN-LOOP GAIN

AOL

Open-loop voltage gain

VS = ±2.5 V, VVS– + 0.2 V < VO < VVS+ – 0.2 V

115

120

dB

VS = ±2.5 V, VVS– + 0.3 V < VO < VVS+ – 0.3 V,

TA = –40°C to +125°C

110

120

VS = ±15 V, VVS– + 0.6 V < VO < VVS+ – 0.6 V

115

120

VS = ±15 V, VVS– + 0.6 V < VO < VVS+ – 0.6 V,

TA = –40°C to +125°C

110

120

OUTPUT

Output voltage difference from

supply voltage

VS = ±2.5 V

±100

mV

VS = ±2.5 V, TA = –40°C to +125°C

±100

VS = ±18 V

±230

VS = ±18 V, TA = –40°C to +125°C

±270

ISC

Short-circuit current

±31

mA

CLOAD

Capacitive load drive

Differential capacitive load, no output Isolation

resistors, phase margin = 30°

50

pF

ZO

Open-loop output impedance

f = 100 kHz (differential)

14

Ω

OUTPUT COMMON-MODE VOLTAGE (VOCM) CONTROL

Input Voltage Range

VS = ±2.5 V

VVS– + 1

VVS+ – 1

VS = ±18 V

VVS– + 2

VVS+ – 2

Small-signal bandwidth from

VOCM pin

VVOCM= 100 mVPP

2

MHz

Large-signal bandwidth from

VOCM pin

VVOCM = 0.6 VPP

5.7

Slew rate from VOCM pin

VVOCM = 0.5-V step, rising

3.5

V/µs

VVOCM = 0.5-V step, falling

5.5

DC output balance

VVOCM fixed midsupply (VO = ±1 V)

78

dB

VOCM input impedance

2.5 || 1

MΩ || pF

VOCM offset from mid-supply

VOCM pin floating

2

mV

VOCM common-mode offset

voltage

VVOCM = VICM, VO = 0 V

±1

±6

mV

VVOCM = VICM, VO = 0 V, TA = –40°C to +125°C

±10

VOCM common-mode offset

voltage drift

VVOCM = VICM, VO = 0 V, TA = –40°C to +125°C

±20

±60

µV/°C

POWER SUPPLY

IQ

Quiescent operating current

0.95

1.2

mA

TA = –40°C to +125°C

1.6

OPA1637

SBOSA00B – DECEMBER 2019 – REVISED AUGUST 2020

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