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AD7656-1 Datasheet(PDF) 5 Page - Analog Devices

Part # AD7656-1
Description  250 kSPS, 6-Channel, Simultaneous
Download  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7656-1 Datasheet(HTML) 5 Page - Analog Devices

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Data Sheet
AD7656-1/AD7657-1/AD7658-1
Rev. D | Page 5 of 32
AD7657-1
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 the ±4 × VREF range, VDD =
10 V to 16.5 V, VSS = −10 V to −16.5 V; for the ±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.
Table 2.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
fIN = 10 kHz sine wave
Signal-to-(Noise + Distortion)
(SINAD)1
82.5
dB
Signal-to-Noise Ratio (SNR)1
83.5
dB
Total Harmonic Distortion (THD)1
−90
dB
−105
dB
Peak Harmonic or Spurious Noise
(SFDR)1
−100
dB
Intermodulation Distortion (IMD)1
fa = 10.5 kHz, fb = 9.5 kHz
Second-Order Terms
−109
dB
Third-Order Terms
−104
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
@ −3 dB
2.2
MHz
@ −0.1 dB
DC ACCURACY
Resolution
14
Bits
No Missing Codes
14
Bits
Integral Nonlinearity1
±1
LSB
±1
Positive Full-Scale Error1
±0.95
% FSR
±0.27% FSR typical
Positive Full-Scale Error Matching1
±0.366
% FSR
Bipolar Zero-Scale Error1
±0.04
% FSR
±0.016% FSR typical
Bipolar Zero-Scale Error Matching1
±0.0427
% FSR
Negative Full-Scale Error1
±0.95
% FSR
±0.27% FSR typical
Negative Full-Scale Error Matching1
±0.366
% FSR
ANALOG INPUT
See Table 8 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
14
pF
±2 × VREF range when in track
REFERENCE INPUT/OUTPUT
Reference Input Voltage Range
2.5
2.5
V
DC Leakage Current
±1
µA
Input Capacitance2
18.5
pF
REFEN/DIS = 1
Reference Output Voltage
2.49
2.51
V
Long-Term Stability
150
ppm
1000 hours
Reference Temperature Coefficient
25
ppm/°C
6
ppm/°C
LOGIC INPUTS
Input High Voltage (VINH)
0.7 × VDRIVE
V
Input Low Voltage (VINL)
0.3 × VDRIVE
V
Input Current (IIN)
±10
µA
Typically 10 nA, VIN = 0 V or VDRIVE
Input Capacitance (CIN)2
10
pF


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