參數(shù)資料
型號(hào): EVAL-AD7793EBZ
廠商: Analog Devices Inc
文件頁數(shù): 29/33頁
文件大?。?/td> 0K
描述: BOARD EVALUATION FOR AD7793
標(biāo)準(zhǔn)包裝: 1
ADC 的數(shù)量: 1
位數(shù): 24
采樣率(每秒): 470
數(shù)據(jù)接口: 串行
輸入范圍: 0 ~ 5 V
在以下條件下的電源(標(biāo)準(zhǔn)): 2.5mW @ 470SPS
工作溫度: -40°C ~ 105°C
已用 IC / 零件: AD7793
已供物品: 板,纜線,CD
相關(guān)產(chǎn)品: AD7793BRU-ND - IC ADC 24BIT 3CH LP 16-TSSOP
AD7793BRUZ-REEL-ND - IC ADC 24BIT 3CH LP 16-TSSOP
AD7793BRUZ-ND - IC ADC 24BIT SIG-DEL 3CH 16TSSOP
AD7792/AD7793
Rev. B | Page 4 of 32
Parameter
AD7792B/AD7793B1
Unit
Test Conditions/Comments
REFERENCE
Internal Reference
Internal Reference Initial Accuracy
1.17 ± 0.01%
V min/max
AVDD = 4 V, TA = 25°C
Internal Reference Drift2
4
ppm/°C typ
15
ppm/°C max
Power Supply Rejection
85
dB typ
External Reference
External REFIN Voltage
2.5
V nom
REFIN = REFIN(+)
REFIN()
Reference Voltage Range2
0.1
V min
AVDD
V max
When VREF = AVDD, the differential input must be
limited to 0.9 × VREF /gain if the in-amp is active
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
EXCITATION CURRENT SOURCES
(IEXC1 and IEXC2)
Output Current
10/210/1000
μA nom
Initial Tolerance at 25°C
±5
% typ
Drift
200
ppm/°C typ
Current Matching
±0.5
% typ
Matching between IEXC1 and IEXC2; VOUT = 0 V
Drift Matching
50
ppm/°C typ
Line Regulation (VDD)
2
%/V typ
AVDD = 5 V ± 5%
Load Regulation
0.2
%/V typ
Output Compliance
AVDD
0.65
V max
10 μA or 210 μA currents selected
AVDD
1.1
V max
1 mA currents selected
GND
30 mV
V min
TEMPERATURE SENSOR
Accuracy
Sensitivity
±2
0.81
°C typ
mV/°C typ
Applies if user calibrates the temperature
sensor
BIAS VOLTAGE GENERATOR
VBIAS
AVDD/2
V nom
VBIAS Generator Start-Up Time
ms/nF typ
Dependent on the capacitance on the AIN pin
INTERNAL/EXTERNAL CLOCK
Internal Clock
Frequency2
64 ± 3%
kHz min/max
Duty Cycle
50:50
% typ
External Clock
Frequency
64
kHz nom
A 128 kHz external clock can be used if the
divide-by-2 function is used
(Bit CLK1 = CLK0 = 1)
Duty Cycle
45:55 to 55:45
% typ
Applies for external 64 kHz clock; a 128 kHz
clock can have a less stringent duty cycle
LOGIC INPUTS
VINL, Input Low Voltage
0.8
V max
DVDD = 5 V
VINH, Input High Voltage
0.4
2.0
V max
V min
DVDD = 3 V
DVDD = 3 V or 5 V
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