AVDD = 2.7 V to 5.25 V, DV
參數(shù)資料
型號(hào): EVAL-AD7797EBZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 18/24頁(yè)
文件大?。?/td> 0K
描述: BOARD EVALUATION FOR AD7797
標(biāo)準(zhǔn)包裝: 1
ADC 的數(shù)量: 1
位數(shù): 24
采樣率(每秒): 123
數(shù)據(jù)接口: 串行
輸入范圍: ±VREF/128
在以下條件下的電源(標(biāo)準(zhǔn)): 1.6mW @ 123SPS
工作溫度: -40°C ~ 85°C
已用 IC / 零件: AD7797
已供物品: 板,CD
相關(guān)產(chǎn)品: AD7797BRUZ-REEL-ND - IC ADC 24BIT SIG-DEL 1CH 16TSSOP
AD7797BRUZ-ND - IC ADC 24BIT SIG-DEL 1CH 16TSSOP
AD7796/AD7797
Rev. A | Page 3 of 24
SPECIFICATIONS
AVDD = 2.7 V to 5.25 V, DVDD = 2.7 V to 5.25 V, GND = 0 V, all specifications TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
AD7796B/AD7797B1
Unit
Test Conditions/Comments
ADC CHANNEL
Output Update Rate
4.17 to 123
Hz nom
No Missing Codes2
24
Bits min
AD7797 only
16
Bits min
AD7796 only
Resolution
RMS Noise and Update Rates
Integral Nonlinearity
±10
ppm of FSR typ
Offset Error3, 4
±1
μV typ
Offset Error Drift vs. Temperature4
±10
nV/°C typ
Full-Scale Error3, 4, 5
±10
μV typ
Gain Drift vs. Temperature4
±3
ppm/°C typ
Power Supply Rejection
90
dB min
AIN = 1 V/128
ANALOG INPUTS
Differential Input Voltage Ranges
±VREF/128
V nom
VREF = REFIN(+) – REFIN(–)
Absolute AIN Voltage Limits2
GND + 300 mV
V min
AVDD 1.1
V max
Common-Mode Voltage, VCM
0.5
V min
VCM = (AIN(+) + AIN(–))/2
Analog Input Current
Average Input Current2
±250
pA max
Update rate < 100 Hz
Average Input Current Drift
±2
pA/°C typ
Normal Mode Rejection2
Internal Clock
@ 50 Hz, 60 Hz
65
dB min
80 dB typ, 50 ± 1 Hz, 60 ± 1 Hz, FS[3:0] = 10106
@ 50 Hz
80
dB min
90 dB typ, 50 ± 1 Hz, FS[3:0] = 10016
@ 60 Hz
90
dB min
100 dB typ, 60 ± 1 Hz, FS[3:0] = 10006
External Clock
@ 50 Hz, 60 Hz
80
dB min
90 dB typ, 50 ± 1 Hz, 60 ± 1 Hz, FS[3:0] = 10106
@ 50 Hz
94
dB min
100 dB typ, 50 ± 1 Hz, FS[3:0] = 10016
@ 60 Hz
90
dB min
100 dB typ, 60 ± 1 Hz, FS[3:0] = 10006
Common-Mode Rejection
@ DC
90
dB min
AIN = 7.81 mV
@ 50 Hz, 60 Hz2
90
dB min
50 ± 1 Hz, 60 ± 1 Hz, FS[3:0] = 10106
@ 50 Hz, 60 Hz2
90
dB min
50 ± 1 Hz (FS[3:0] = 10016), 60 ± 1 Hz,
FS[3:0] = 10006
REFERENCE
External REFIN Voltage
2.5
V nom
REFIN = REFIN(+) – REFIN(–)
Reference Voltage Range2
0.1
V min
AVDD
V max
Absolute REFIN Voltage Limits2
GND 30 mV
V min
AVDD + 30 mV
V max
Average Reference Input Current
400
nA/V typ
Average Reference Input Current Drift
±0.03
nA/V/°C typ
Normal Mode Rejection
Same as for analog inputs
Common-Mode Rejection
100
dB typ
TEMPERATURE SENSOR
Accuracy
±2
°C typ
Applies if user calibrates the temperature sensor
Sensitivity
0.81
mV/°C typ
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