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AD7656A-1 Datasheet(PDF) 3 Page - Analog Devices

Part # AD7656A-1
Description  250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar, 16-Bit ADC
Download  28 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7656A-1 Datasheet(HTML) 3 Page - Analog Devices

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Data Sheet
AD7656A-1
SPECIFICATIONS
VREF = 2.5 V internal/external, AVCC = 4.75 V to 5.25 V, DVCC = 4.75 V to 5.25 V, and VDRIVE = 2.7 V to 5.25 V. For the ±4 × VREF range,
VDD = 11 V to 16.5 V, and VSS = −11 V to −16.5 V. For the ±2 × VREF range, VDD = 6 V to 16.5 V, and VSS = −6 V to −16.5 V. fSAMPLE =
250 kSPS, and TA = TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
fIN = 10 kHz sine wave
Signal-to-Noise + Distortion (SINAD)1
88
dB
Signal-to-Noise Ratio (SNR)1
88
dB
Total Harmonic Distortion (THD)1
−90
dB
−105
dB
VDD/VSS = ±6 V to ±16.5 V
Peak Harmonic or Spurious Noise (SFDR)1
−100
dB
Intermodulation Distortion (IMD)1
fa = 10.5 kHz, fb = 9.5 kHz
Second-Order Terms
−112
dB
Third-Order Terms
−107
dB
Aperture Delay
10
ns
Aperture Delay Matching
4
ns
Aperture Jitter
35
ps
Channel-to-Channel Isolation1
−100
dB
fIN on unselected channels up to 100 kHz
Full-Power Bandwidth
4.5
MHz
At −3 dB
2.2
MHz
At −0.1 dB
DC ACCURACY
Resolution
16
Bits
No Missing Codes
15
Bits
Integral Nonlinearity1
±3
LSB
±1
LSB
Positive Full-Scale Error1
±0.381
±0.8
% FSR
Positive Full-Scale Error Matching1
±0.35
% FSR
Bipolar Zero-Scale Error1
±0.0137%
±0.048
% FSR
Bipolar Zero-Scale Error Matching1
±0.038
% FSR
Negative Full-Scale Error1
±0.381
±0.8
% FSR
Negative Full-Scale Error Matching1
±0.35
% FSR
ANALOG INPUT
See Table 6 for minimum VDD/VSS for each
range
Input Voltage Ranges
−4 × VREF
+4 × VREF
V
RNGx bits or RANGE pin = 0
−2 × VREF
+2 × VREF
V
RNGx bits or RANGE pin = 1
DC Leakage Current
±1
µA
Input Capacitance2
10
pF
±4 × VREF range when in track mode
14
pF
±2 × VREF range when in track mode
REFERENCE INPUT/OUTPUT
Reference Input Voltage Range
2.5
3
V
DC Leakage Current
±1
µA
Input Capacitance2
18.5
pF
REFEN/DIS = 13
Reference Output Voltage
2.49
2.51
V
Long-Term Stability
150
ppm
1000 hours
Reference Temperature Coefficient
25
ppm/°C
6
ppm/°C
Rev. 0 | Page 3 of 28


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