AD7789BRM datasheet(3/20 Pages) AD

部件名	AD7789BRM

功能描述	Low Power, 16-/24-Bit, Sigma-Delta ADCs

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制造商	AD [Analog Devices]

网页	http://www.analog.com

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AD7788/AD7789

Rev. B | Page 3 of 20

SPECIFICATIONS

AD7789

VDD = 2.5 V to 5.25 V; REFIN(+) = 2.5 V; REFIN(−) = GND; GND = 0 V; all specifications TMIN to TMAX, unless otherwise noted.

Table 1.

Parameter1

AD7789B

Unit

Test Conditions/Comments

ADC CHANNEL SPECIFICATION

Output Update Rate

16.6

Hz nom

ADC CHANNEL

No Missing Codes2

24

Bits min

Resolution

19

Bits p-p

Output Noise

1.5

μV rms typ

Integral Nonlinearity

±15

ppm of FSR max

Offset Error

±3

μV typ

Offset Error Drift vs. Temperature

±10

nV/°C typ

Full-Scale Error3

±10

μV typ

Gain Drift vs. Temperature

±0.5

ppm/°C typ

Power Supply Rejection

90

dB min

100 dB typ, AIN = 1 V

ANALOG INPUTS

Differential Input Voltage Ranges

±REFIN

V nom

REFIN = REFIN(+) − REFIN(−)

Absolute AIN Voltage Limits2

GND − 30 mV

V min

VDD + 30 mV

V max

Analog Input Current

Input current varies with input voltage

Average Input Current2

±400

nA/V typ

Average Input Current Drift

±50

pA/V/°C typ

Normal-Mode Rejection2

@ 50 Hz, 60 Hz

65

dB min

50 Hz ± 1 Hz, 60 Hz ± 1 Hz

Common-Mode Rejection

AIN = 1 V

@ DC

90

dB min

100 dB typ

@ 50 Hz, 60 Hz2

100

dB min

50 Hz ± 1 Hz, 60 Hz ± 1 Hz

REFERENCE INPUT

REFIN Voltage

2.5

V nom

REFIN = REFIN(+) − REFIN(−)

Reference Voltage Range2

0.1

V min

VDD

V max

Absolute REFIN Voltage Limits2

GND − 30 mV

V min

VDD + 30 mV

V max

Average Reference Input Current

0.5

μA/V typ

Average Reference Input Current Drift

±0.03

nA/V/°C typ

Normal-Mode Rejection2

@ 50 Hz, 60 Hz

65

dB min

50 Hz ± 1 Hz, 60 Hz ± 1 Hz

Common-Mode Rejection

AIN = 1 V

@ DC

110

dB typ

@ 50 Hz, 60 Hz

110

dB typ

50 Hz ± 1 Hz, 60 Hz ± 1 Hz

1 Temperature range:

−40°C to +105°C.

2 Specification is not production tested but is supported by characterization data at initial product release.

3 Full-scale error applies to both positive and negative full scale and applies at the factory calibration conditions (VDD = 4 V).

类似零件编号 - AD7789BRM

制造商	部件名	数据表	功能描述
Analog Devices	AD7789	382Kb / 20P	Low Power, 16-/24-Bit, Sigma-Delta ADCs REV. B

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