7.5 Electrical Characteristics

at TA = 25 °C, VS = VSOUT = ±15 V, VICM = VOCM is at mid-supply, RL = 10 kΩ, and G = 1 V/V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

INPUT

VOS

Differential offset voltage (input

referred)

G = 1 to 16

±70

±400

µV

G < 1

±70/G

±400/G

Differential offset voltage drift

(input referred)

G = 1 to 16, TA = –40°C to +125°C

±0.3

±1.0

µV/°C

G < 1, TA = –40°C to +125°C

±0.3/G

±1.0/G

PSRR

Power-supply rejection ratio

±4 V ≤ VS ≤ ±18 V, RTI

G = 0.125

95

110

dB

G = 0.25

98

114

dB

G = 0.5

100

118

G = 1

120

134

G = 2

120

126

G = 4

120

132

G = 8

120

136

G = 16

120

140

zid

Differential impedance

1 || 1

GΩ || pF

zic

Common-mode impedance

1 || 7

GΩ || pF

VICM

Common-mode input voltage

VS = ±4 V to ±18 V

(VS–) + 2.5

(VS+) – 2.5

V

VS = ±4 V to ±18 V, TA = –40°C to +125°C

(VS–) + 3

(VS+) – 2.5

CMRR

Common-mode rejection ratio

At dc to 60 Hz,

VICM = ± 10 V,

TA = –40°C to +125°C,

RTI

G = 0.125

64

82

dB

G = 0.25

70

88

G = 0.5

76

94

G = 1

82

100

G = 2

88

106

G = 4

94

112

G = 8

100

118

G = 16

106

124

BIAS CURRENT

IB

Input bias current

0.5

nA

TA = –40°C to +125°C

1

Input bias current drift

TA = –40°C to +125°C

10

pA/°C

IOS

Input offset current

0.5

nA

TA = –40°C to +125°C

1

Input offset current drift

TA = –40°C to +125°C

10

pA/°C

PGA855

SBOSAE0 – APRIL 2023

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