AD8293 데이터 시트보기 (PDF) - Analog Devices

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AD8293

Low Cost, Zero-Drift In-Amp with Filter and Fixed Gain

Analog Devices 

AD8293G80/AD8293G160

VCC = 2.7 V to 5.0 V, VCM = −0 V, VREF = VCC/2, VIN = VINP − VINN, TA = 25°C, tested at OUT with 10 kΩ load and ADC OUT, unless

otherwise noted. Temperature specifications guaranteed by characterization.

Table 3. B Grade (Tested and Guaranteed over a Wider Supply Range to More Stringent Specifications Than the A Grade)

AD8293G80B

AD8293G160B

Parameter

Symbol Conditions

Min Typ Max

Min Typ Max

COMMON-MODE REJECTION CMR

VCC = 5 V, VCM = 0 V to 3.3 V;

−40°C ≤ TA ≤ +85°C

110 140

110 140

VCC = 2.7 V, VCM = 0 V to 1 V;

−40°C ≤ TA ≤ +85°C

106 140

106 140

NOISE PERFORMANCE

Voltage Noise

en p-p

f = 0.01 Hz to 10 Hz

0.7

0.7

Voltage Noise Density

en

f = 1 kHz

35

35

INPUT CHARACTERISTICS

Input Offset Voltage

VOS

5

30

3

20

vs. Temperature

ΔVOS/ΔT −40°C ≤ TA ≤ +85°C, VCC = 5 V

0.02 0.3

0.02 0.3

vs. Temperature

ΔVOS/ΔT −40°C ≤ TA ≤ +85°C, VCC = 2.7 V

0.01 0.5

0.01 0.5

Input Bias Current

IB

−40°C ≤ TA ≤ +85°C

0.4

2

0.4

2

Input Offset Current

IOS

4

4

Input Operating Impedance

Differential

50||1

50||1

Common Mode

10||10

10||10

Input Voltage Range

0

VCC − 1.7 0

VCC − 1.7

DYNAMIC RESPONSE

Small Signal Bandwidth1 BW

Filter limited; measured at

500

500

ADC OUT

Slew Rate

SR

Filter limited

Filter limited

Settling Time2

ts

0.1%

500 Hz filter, VO = 2 V step;

1.9

1.9

measured at ADC OUT

0.01%

2.4

2.4

Internal Clock Frequency

60

60

GAIN

80

160

Gain Error

VO = 0.075 V to 4.925 V

0.3

0.5

0.3

0.5

Gain Drift

−40°C ≤ TA ≤ +85°C

5

25

5

25

Nonlinearity

VO = 0.075 V to 4.925 V

0.003 0.009

0.003 0.009

OUTPUT CHARACTERISTICS

Output Voltage High

VOH

VCC −

0.075

VCC −

0.075

Output Voltage Low

VOL

0.075

0.075

Short-Circuit Current

ISC

VCC = 5 V

±35

±35

VCC = 2.7 V

±25

±25

REFERENCE CHARACTERISTICS

VREF Range

0.8

VCC − 0.8 0.8

VCC − 0.8

REF Pin Current

IREF

0.01 1

0.01 1

POWER SUPPLY

Operating Range

1.8

5.5

1.8

5.5

Power Supply Rejection

PSR

VCC = 1.8 V to 5.5 V, VCM = 0 V 100 120

100 120

Supply Current

ISY

IO = 0 mA, VIN = 0 V

1.0

1.3

1.0

1.3

−40°C ≤ TA ≤ +85°C

1.5

1.5

TEMPERATURE RANGE

Specified Range

−40

+85

−40

+85

Unit

dB

dB

μV p-p

nV/√Hz

μV

μV/°C

μV/°C

nA

nA

MΩ||pF

GΩ||pF

V

Hz

ms

ms

kHz

%

ppm/°C

% FS

V

V

mA

mA

V

nA

V

dB

mA

mA

°C

1 Higher bandwidths result in higher noise.

2 Settling time is determined by filter setting.

Rev. 0 | Page 4 of 16

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