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AD7655 Datasheet(PDF) 3 Page - Analog Devices

Part # AD7655
Description  Low Cost, 4-Channel, 16-Bit, 1 MSPS PulSAR ADC
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7655 Datasheet(HTML) 3 Page - Analog Devices

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Data Sheet
AD7655
SPECIFICATIONS
AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V; VREF = 2.5 V; all specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
RESOLUTION
16
Bits
ANALOG INPUT
Voltage Range
VINx – VINxN
0
2 VREF
V
Common-Mode Input Voltage
VINxN
−0.1
+0.5
V
Analog Input CMRR
fIN = 100 kHz
55
dB
Input Current
1 MSPS throughput
45
µA
Input Impedance1
THROUGHPUT SPEED
Complete Cycle (2 Channels)
Normal mode
2
µs
Throughput Rate
Normal mode
0
1
MSPS
Complete Cycle (2 Channels)
Impulse mode
2.25
µs
Throughput Rate
Impulse mode
0
888
kSPS
DC ACCURACY
Integral Linearity Error2
−6
+6
LSB3
No Missing Codes
15
Bits
Transition Noise
0.8
LSB
Full-Scale Error4
TMIN to TMAX
±0.25
±0.5
% of FSR
Full-Scale Error Drift4
±2
ppm/°C
Unipolar Zero Error4
TMIN to TMAX
±0.25
% of FSR
Unipolar Zero Error Drift4
±0.8
ppm/°C
Power Supply Sensitivity
AVDD = 5 V ± 5%
±0.8
LSB
AC ACCURACY
Signal-to-Noise
fIN = 100 kHz
86
dB5
Spurious-Free Dynamic Range
fIN = 100 kHz
98
dB
Total Harmonic Distortion
fIN = 100 kHz
−96
dB
Signal-to-Noise and Distortion
fIN = 100 kHz
86
dB
fIN = 100 kHz, −60 dB input
30
dB
Channel-to-Channel Isolation
fIN = 100 kHz
−92
dB
−3 dB Input Bandwidth
10
MHz
SAMPLING DYNAMICS
Aperture Delay
2
ns
Aperture Delay Matching
30
ps
Aperture Jitter
5
ps rms
Transient Response
Full-scale step
250
ns
REFERENCE
External Reference Voltage Range
2.3
2.5
AVDD/2
V
External Reference Current Drain
1 MSPS throughput
180
µA
DIGITAL INPUTS
Logic Levels
VIL
−0.3
+0.8
V
VIH
+2.0
DVDD + 0.3
V
IIL
−1
+1
µA
IIH
−1
+1
µA
DIGITAL OUTPUTS
Data Format6
Pipeline Delay7
VOL
ISINK = 1.6 mA
0.4
V
VOH
ISOURCE = −500 µA
OVDD − 0.2
V
Rev. C | Page 3 of 27


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