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AD7321 数据表(PDF) 4 Page - Analog Devices

部件名 AD7321
功能描述  2-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
PDF  37 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7321 数据表(HTML) 4 Page - Analog Devices

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Data Sheet
AD7321
Rev. B | Page 3 of 36
SPECIFICATIONS
VDD = 12 V to 16.5 V, VSS = −12 V to −16.5 V, VCC = 2.7 V to 5.25 V, VDRIVE = 2.7 V to 5.25 V, VREF = 2.5 V to 3.0 V internal/external,
fSCLK = 10 MHz, fS = 500 kSPS, TA = TMAX to TMIN, unless otherwise noted.
Table 2.
B Version
Parameter1
Min
Typ
Max
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
FIN = 50 kHz sine wave
Signal-to-Noise Ratio (SNR)2
76
dB
Differential mode, VCC = 4.75 V to 5.25 V
75.5
dB
Differential mode, VCC < 4.75 V
72.5
dB
Single-ended/pseudo differential mode: ±10 V,
±2.5 V and ±5 V ranges, VCC = 4.75 V to 5.25 V
72
dB
Single-ended/pseudo differential mode: 0 V to
10 V VCC = 4.75 V to 5.25 V and all ranges at VCC <
4.75 V
Signal-to-Noise + Distortion
(SINAD)2
75
dB
Differential mode: ±2.5 V and ±5 V ranges
74
Differential mode: 0 V to 10 V
76
dB
Differential mode: ±10 V range
72
dB
Single-ended/pseudo differential mode: ±2.5 V
and ±5 V ranges
72.5
dB
Single-ended/pseudo differential mode: 0 V to
+10 V and ±10 V ranges
Total Harmonic Distortion
(THD)2
−80
dB
Differential mode: ±2.5 V and ±5 V ranges
−79
dB
Differential mode: 0 V to 10 V ranges
−82
dB
Differential mode: ±10 V range
−77
dB
Single-ended/pseudo differential mode:
±5 V range
−79
dB
Single-ended/pseudo differential mode:
±2.5 V range
−80
dB
Single-ended/pseudo differential mode: 0 V to
+10 V and ±10 V ranges
Peak Harmonic or Spurious
Noise (SFDR)2
−81
dB
Differential mode: ±2.5 V and ±5 V ranges
−80
dB
Differential mode: 0 V to 10 V ranges
−82
dB
Differential mode: ±10 V ranges
−78
dB
Single-ended/pseudo differential mode:
±5 V range
−80
Single-ended/pseudo differential mode:
±2.5 V range
−79
dB
Single-ended/pseudo differential mode: 0 V to
+10 V and ±10 V ranges
Intermodulation Distortion
(IMD)2
fa = 50 kHz, fb = 30 kHz
Second-Order Terms
−88
dB
Third-Order Terms
−90
dB
Aperture Delay3
7
ns
Aperture Jitter3
50
ps
Common-Mode Rejection
(CMRR)2
−79
dB
Up to 100 kHz ripple frequency: see Figure 17
Channel-to-Channel
Isolation2
−72
dB
FIN on unselected channels up to 100 kHz: see
Figure 14
Full Power Bandwidth
22
MHz
At 3 dB
5
MHz
At 0.1 dB



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