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AD7656BSTZ-REEL Datasheet(PDF) 3 Page - Analog Devices

Part # AD7656BSTZ-REEL
Description  250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar 16-/14-/12-Bit ADC
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7656BSTZ-REEL Datasheet(HTML) 3 Page - Analog Devices

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Data Sheet
AD7656/AD7657/AD7658
Rev. D | Page 3 of 32
SPECIFICATIONS
AD7656
VREF = 2.5 V internal/external, AVCC = 4.75 V to 5.25 V, DVCC = 4.75 V to 5.25 V, VDRIVE = 2.7 V to 5.25 V;
For ±4 × VREF range: VDD = 10 V to 16.5 V, VSS = −10 V to −16.5 V; For ±2 × VREF range: VDD = 5 V to 16.5 V, VSS = −5 V to −16.5 V;
fSAMPLE = 250 kSPS, TA = TMIN to TMAX, unless otherwise noted.1
Table 1.
Parameter
B Version1
Y Version1
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
fIN = 50 kHz sine wave
Signal-to-Noise + Distortion (SINAD)2
84
84
dB min
85.5
85.5
dB typ
Signal-to-Noise Ratio (SNR)2
85
85
dB min
86.5
86.5
dB typ
Total Harmonic Distortion (THD)2
−90
−90
dB max
−92
−92
dB typ
VDD/VSS = ±5 V to ±10 V
−100
−100
dB typ
VDD/VSS = ±12 V to ±16.5 V
Peak Harmonic or Spurious Noise (SFDR)2
−100
−100
dB typ
Intermodulation Distortion (IMD)2
fa = 50 kHz, fb = 49 kHz
Second-Order Terms
−112
−112
dB typ
Third-Order Terms
−107
−107
dB typ
Aperture Delay
10
10
ns max
Aperture Delay Matching
4
4
ns max
Aperture Jitter
35
35
ps typ
Channel-to-Channel Isolation2
−100
−100
dB typ
fIN on unselected channels up to 100 kHz
Full Power Bandwidth
12
12
MHz typ
@ −3 dB
2
2
MHz typ
@ −0.1 dB
DC ACCURACY
Resolution
16
16
Bits
No Missing Codes
15
14
Bits min
16
16
Bits min
@ 25°C
Integral Nonlinearity2
±3
±4.5
LSB max
±1
±1
LSB typ
Positive Full-Scale Error2
±0.75
±0.75
% FSR max
±0.22% FSR typical
Positive Full-Scale Error Matching2
±0.35
±0.35
% FSR max
Bipolar Zero-Scale Error2
±0.023
±0.023
% FSR max
±0.004% FSR typical
Bipolar Zero-Scale Error Matching2
±0.038
±0.038
% FSR max
Negative Full-Scale Error2
±0.75
±0.75
% FSR max
±0.22% FSR typical
Negative Full-Scale Error Matching2
±0.35
±0.35
% FSR max
ANALOG INPUT
See Table 8 for min VDD/VSS for each range
Input Voltage Ranges
±4 × VREF
±4 × VREF
V
RNG bit/RANGE pin = 0
±2 × VREF
±2 × VREF
V
RNG bit/RANGE pin = 1
DC Leakage Current
±1
±1
µA max
Input Capacitance3
10
10
pF typ
±4 × VREF range when in track
14
14
pF typ
±2 × VREF range when in track
REFERENCE INPUT/OUTPUT
Reference Input Voltage Range
2.5/3
2.5/3
V min/max
DC Leakage Current
±1
±1
µA max
Input Capacitance3
18.5
18.5
pF typ
REFEN/DIS = 1
Reference Output Voltage
2.49/2.51
2.49/2.51
V min/max
Long-Term Stability
150
150
ppm typ
1,000 hours
Reference Temperature Coefficient
25
25
ppm/°C max
6
6
ppm/°C typ


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