AD8500 datasheet(5/24 Pages) AD

Part #	AD8500

Description	22 關A, RRIO, CMOS, 18 V

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Data Sheet

AD8546/AD8548

Rev. B | Page 5 of 24

ELECTRICAL CHARACTERISTICS—2.7 V OPERATION

VSY = 2.7 V, VCM = VSY/2, TA = 25°C, unless otherwise noted.

Table 4.

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

INPUT CHARACTERISTICS

Offset Voltage

V

OS

V

CM = 0 V to 2.7 V

3

mV

V

CM = 0.3 V to 2.4 V; −40°C ≤ TA ≤ +125°C

4

mV

V

CM = 0 V to 2.7 V; −40°C ≤ TA ≤ +125°C

12

mV

Offset Voltage Drift

ΔV

OS/ΔT

3

µV/°C

Input Bias Current

I

B

1

10

pA

−40°C ≤ T

A ≤ +125°C

2.6

nA

Input Offset Current

I

OS

20

pA

−40°C ≤ T

A ≤ +125°C

5.2

nA

Input Voltage Range

IVR

0

2.7

V

Common-Mode Rejection Ratio

CMRR

V

CM = 0 V to 2.7 V

60

75

dB

V

CM = 0.3 V to 2.4 V; −40°C ≤ TA ≤ +125°C

58

dB

V

CM = 0 V to 2.7 V; −40°C ≤ TA ≤ +125°C

49

dB

Large Signal Voltage Gain

A

VO

R

L = 100 kΩ; VO = 0.5 V to 2.2 V

97

115

dB

−40°C ≤ T

A ≤ +125°C

90

dB

Input Resistance

R

IN

10

GΩ

Input Capacitance

Differential Mode

C

INDM

3.5

pF

Common Mode

C

INCM

3.5

pF

OUTPUT CHARACTERISTICS

Output Voltage High

V

OH

R

L = 100 kΩ to VCM; −40°C ≤ TA ≤ +125°C

2.69

V

Output Voltage Low

V

OL

R

L = 100 kΩ to VCM; −40°C ≤ TA ≤ +125°C

10

mV

Short-Circuit Current

I

SC

±4

mA

Closed-Loop Output Impedance

Z

OUT

f = 1 kHz; A

V = +1

20

Ω

POWER SUPPLY

Power Supply Rejection Ratio

PSRR

V

SY = 2.7 V to 18 V

95

115

dB

−40°C ≤ T

A ≤ +125°C

90

dB

Supply Current per Amplifier

I

SY

I

O = 0 mA

18

22

µA

−40°C ≤ T

A ≤ +125°C

33

µA

DYNAMIC PERFORMANCE

Slew Rate

SR

R

L = 1 MΩ; CL = 10 pF; AV = +1

50

V/ms

Settling Time to 0.1%

t

S

V

IN = 1 V step; RL = 100 kΩ; CL = 10 pF

20

µs

Gain Bandwidth Product

GBP

R

L = 1 MΩ; CL = 10 pF; AV = +1

190

kHz

Phase Margin

Φ

M

R

L = 1 MΩ; CL = 10 pF; AV = +1

60

Degrees

Channel Separation

CS

f = 10 kHz; R

L = 1 MΩ

105

dB

NOISE PERFORMANCE

Voltage Noise

e

n p-p

f = 0.1 Hz to 10 Hz

6

µV p-p

Voltage Noise Density

e

n

f = 1 kHz

60

nV/√Hz

f = 10 kHz

56

nV/√Hz

Current Noise Density

i

n

f = 1 kHz

0.1

pA/√Hz

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