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AD7707 Datasheet(PDF) 5 Page - Analog Devices

Part No. AD7707
Description  3-Channel 16-Bit, Sigma-Delta ADC
Download  53 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD7707 Datasheet(HTML) 5 Page - Analog Devices

 
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AD7707
Rev. B | Page 4 of 52
SPECIFICATIONS
AVDD = DVDD = 3 V or 5 V, REF IN(+) = 1.225 V with AVDD = 3 V and 2.5 V with AVDD = 5 V; REF IN(−) = GND; VBIAS = REFIN(+);
MCLK IN = 2.4576 MHz unless otherwise noted. All specifications TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
B Version1
Unit
Conditions/Comments
STATIC PERFORMANCE
Low Level Input Channels (AIN1 and AIN2)
No Missing Codes
16
Bits min
Guaranteed by design; filter notch < 60 Hz
Output Noise
See
Table 7 to
Table 10
Depends on filter cutoffs and selected gain
Integral Nonlinearity2
±0.003
% of FSR max
Filter notch < 60 Hz; typically ±0.0003%
Unipolar Offset Error3
Unipolar Offset Drift4
0.5
μV/°C typ
Bipolar Zero Error3
Bipolar Zero Drift4
0.5
μV/°C typ
For gains of 1, 2, and 4
0.1
μV/°C typ
For gains of 8, 16, 32, 64, and 128
Positive Full-Scale Error3, 5
Full-Scale Drift4, 6
0.5
μV/°C typ
Gain Error3, 7
Gain Drift4, 8
0.5
ppm of FSR/°C typ
Bipolar Negative Full-Scale Error2
±0.003
% of FSR max
Typically ±0.0007%
Bipolar Negative Full-Scale Drift4
1
μV/°C typ
For gains of 1 to 4
0.6
μV/°C typ
For gains of 8 to 128
HIGH LEVEL INPUT CHANNEL (AIN3)
No Missing Codes
16
Bits min
Guaranteed by design; filter notch < 60 Hz
Output Noise
See
Table 11 to
Table 13
Depends on filter cutoffs and selected gain
Integral Nonlinearity2
±0.003
% of FSR max
Filter notch < 60 Hz; typically ±0.0003%
Unipolar Offset Error9
±10
mV max
Typically within ±1.5 mV
Unipolar Offset Drift
4
μV/°Ctyp
Bipolar Zero Error9
±10
mV max
Typically within ±1.5 mV
Bipolar Zero Drift
4
μV/°C typ
For gains of 1, 2, and 4
1
μV/°C typ
For gains of 8, 16, 32, 64, and 128
Gain Error
±0.2
% typ
Typically within ±0.05%
Gain Drift
0.5
ppm of FSR/°C typ
Negative Full-Scale Error2
±0.0012
% of FSR typ
LOW LEVEL ANALOG INPUTS/REFERENCE INPUTS
Specifications for AIN and REF IN,
unless otherwise noted
Input Common-Mode Rejection (CMR)2
Low level input channels, AIN1 and AIN2
AVDD = 5 V
Gain = 1
100
dB typ
Gain = 2
105
dB typ
Gain = 4
110
dB typ
Gain = 8 to 128
130
dB typ
AVDD = 3 V
Gain = 1
105
dB typ
Gain = 2
110
dB typ
Gain = 4
120
dB typ
Gain = 8 to 128
130
dB typ
Normal-Mode 50 Hz Rejection2
98
dB typ
For filter notches of 10 Hz, 25 Hz, 50 Hz; ±0.02 × fNOTCH
Normal-Mode 60 Hz Rejection2
98
dB typ
For filter notches of 10 Hz, 20 Hz, 60 Hz; ±0.02 × fNOTCH
Common-Mode 50 Hz Rejection2
150
dB typ
For filter notches of 10 Hz, 25 Hz, 50 Hz; ±0.02 × fNOTCH


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