Datasheet

Data Sheet AD7322
Rev. B | Page 3 of 36
SPECIFICATIONS
Unless otherwise noted, V
DD
= 12 V to 16.5 V, V
SS
= −12 V to −16.5 V, V
CC
= 4.75 V to 5.25 V, V
DRIVE
= 2.7 V to 5.25 V, V
REF
= 2.5 V to 3.0 V
internal/external, f
SCLK
= 20 MHz, f
S
= 1 MSPS, T
A
= T
MAX
to T
MIN
; for V
CC
< 4.75 V, all specifications are typical.
Table 2.
B Version
Parameter
1
Min Typ Max Unit Test Conditions/Comments
DYNAMIC PERFORMANCE f
IN
= 50 kHz sine wave
Signal-to-Noise Ratio (SNR)
2
76 dB Differential mode
72.5 dB Single-ended/pseudo differential mode
Signal-to-Noise + Distortion (SINAD)
2
75 dB Differential mode; ±2.5 V and ±5 V ranges
76 dB Differential mode; 0 V to +10 V and ±10 V ranges
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
−82 dB Differential mode; 0 V to +10 V and ±10 V ranges
−77 dB Single-ended/pseudo differential mode;
±2.5 V and ±5 V ranges
−80 dB Single-ended/pseudo differential mode;
0 V to +10 V and ±10 V ranges
Peak Harmonic or Spurious Noise
(SFDR)
2
−80 dB Differential mode; ±2.5 V and ±5 V ranges
−82 dB Differential mode; 0 V to +10 V and ±10 V ranges
−78 dB Single-ended/pseudo differential mode;
±2.5 V and ±5 V ranges
−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 Delay
3
7 ns
Aperture Jitter
3
50 ps
Common-Mode Rejection Ratio
(CMRR)
2
−79 dB Up to 100 kHz ripple frequency; see Figure 17
Channel-to-Channel Isolation
2
−72
dB
f
IN
on unselected channels up to 100 kHz; see Figure 14
Full Power Bandwidth 22 MHz At 3 dB
5 MHz At 0.1 dB
DC ACCURACY All dc accuracy specifications are typical for 0 V to
10 V mode
Single-ended/pseudo differential mode:
1 LSB = FSR/4096; unless otherwise noted
Differential mode: 1 LSB = FSR/8192; unless
otherwise noted
Resolution
13
Bits
No Missing Codes 12-bit plus
sign (13 bits)
Bits Differential mode
11-bit plus
sign (12 bits)
Bits Single-ended/pseudo differential mode
Integral Nonlinearity
2
±1.1 LSB Differential mode
±1 LSB Single-ended/pseudo differential mode
−0.7/+1.2 LSB Single-ended/pseudo differential mode
(LSB = FSR/8192)