AD7322 Analog Devices, AD7322 Datasheet - Page 3

• Manufacturer Part Number: AD7322
• Description: Software Selectable True Bipolar Input, 2-Channel, 12-Bit Plus Sign ADC
• Manufacturer: Analog Devices

Specifications of AD7322

• Resolution (bits): 13bit
• # Chan: 2
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni,SE-Uni
• Ain Range: Bip (Vref),Bip (Vref) x 2,Bip (Vref) x 4,Bip 10V,Bip 2.5V,Bip 5.0V,Uni (Vref) x 4,Uni 10V
• Adc Architecture: SAR
• Pkg Type: SOP

SPECIFICATIONS
Unless otherwise noted, V
internal/external, f
Table 2.
Parameter
DYNAMIC PERFORMANCE
DC ACCURACY
Common-Mode Rejection Ratio
Signal-to-Noise Ratio (SNR)
Signal-to-Noise + Distortion (SINAD)
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise
Intermodulation Distortion (IMD)
Aperture Delay
Aperture Jitter
Channel-to-Channel Isolation
Full Power Bandwidth
Resolution
No Missing Codes
Integral Nonlinearity
(SFDR)
Third-Order Terms
Second-Order Terms
(CMRR)
2
1
2
3
3
SCLK
2
= 20 MHz, f
DD
2
= 12 V to 16.5 V, V
2
2
2
S
= 1 MSPS, T
2
Min
76
72.5
75
72
13
sign (13 bits)
11-bit plus
sign (12 bits)
12-bit plus
SS
A
= −12 V to −16.5 V, V
= T
MAX
B Version
Typ
76
72.5
−82
−80
−82
−79
−88
−90
7
50
−79
−72
22
5
−0.7/+1.2
to T
MIN
Rev. A | Page 3 of 36
; for V
Max
−80
−77
−80
−78
±1.1
±1
CC
CC
< 4.75 V, all specifications are typical.
= 4.75 V to 5.25 V, V
Unit
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ns
ps
dB
dB
MHz
MHz
Bits
Bits
Bits
LSB
LSB
LSB
Test Conditions/Comments
f
Differential mode
Single-ended/pseudo differential mode
Differential mode; ±2.5 V and ±5 V ranges
Differential mode; 0 V to +10 V and ±10 V ranges
Single-ended/pseudo differential mode;
±2.5 V and ±5 V ranges
Single-ended/pseudo differential mode;
0 V to +10 V and ±10 V ranges
Differential mode; ±2.5 V and ±5 V ranges
Differential mode; 0 V to +10 V and ±10 V ranges
Single-ended/pseudo differential mode;
±2.5 V and ±5 V ranges
Single-ended/pseudo differential mode;
0 V to +10 V and ±10 V ranges
Differential mode; ±2.5 V and ±5 V ranges
Differential mode; 0 V to +10 V and ±10 V ranges
Single-ended/pseudo differential mode;
±2.5 V and ±5 V ranges
Single-ended/pseudo differential mode;
0 V to +10 V and ±10 V ranges
fa = 50 kHz, fb = 30 kHz
Up to 100 kHz ripple frequency; see Figure 17
f
At 3 dB
At 0.1 dB
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
Differential mode
Single-ended/pseudo differential mode
Differential mode
Single-ended/pseudo differential mode
Single-ended/pseudo differential mode
(LSB = FSR/8192)
IN
IN
on unselected channels up to 100 kHz; see Figure 14
= 50 kHz sine wave
DRIVE
= 2.7 V to 5.25 V, V
REF
= 2.5 V to 3.0 V
AD7322