
AD7322
Preliminary Technical Data
AD7322—SPECIFICATIONS
1
Table 1. Unless otherwise noted, V
DD
= + 4.75V to +16.5V, V
SS
= -4.75V to –16.5V, V
CC
= 2.7V to 5.25V, V
DRIVE
= 2.7V to 5.25V, V
REF
= 2.5V Internal/External, f
SCLK
= 20 MHz, f
S
= 1 MSPS T
A
= T
MAX
to T
MIN
Parameter
Specification
Units
DYNAMIC PERFORMANCE
Signal to Noise Ratio (SNR)
2
78
dB min
75
dB min
Signal to Noise + Distortion (SINAD)
2
77
dB min
74
dB min
Total Harmonic Distortion (THD)
2
-TBD
dB max
Peak Harmonic or Spurious Noise
(SFDR)
2
-TBD
dB max
Intermodulation Distortion (IMD)
2
Second Order Terms
-88
dB typ
Third Order Terms
-88
dB typ
Aperature Delay
2
10
ns max
Aperature Jitter
2
50
ps typ
Common Mode Rejection (CMRR)
2
TBD
dB typ
Channel-to-Channel Isolation
2
-80
dB typ
Full Power Bandwidth
2
13
1.5
MHz typ
DC ACCURACY
Resolution
12+Sign
Bits
Integral Nonlinearity
2
±1.5
LSB max
Differential Nonlinearity
2
± 0.95
LSB max
Offset Error
3
±6
LSB max
Offset Error Match
2
±0.5
LSB max
Gain Error
2
±2
LSB max
Gain Error Match
2
±0.6
LSB max
Positive Full-Scale Error
2
±2
LSB max
Positive Full Scale Error Match
2
±0.6
LSB max
Bipolar Zero Error
2
±6
LSB max
Bipolar Zero Error Match
2
±0.5
LSB max
Negative Full Scale Error
2
±2
LSB max
Negative Full Scale Error Match
2
±0.5
LSB max
ANALOG INPUT
Input Voltage Ranges
(Programmed via Range Register)
±5V
±2.5V
0 to 10V
DC Leakage Current
±10
nA max
Input Capacitance
8
pF typ
11
pF typ
19
pF typ
6
pF typ
REFERENCE INPUT/OUTPUT
Input Voltage Range
+2.5 to +3V
V min to
max
Input DC Leakage Current
±1
μA max
Input Capactiance
20
pF typ
Reference Output Voltage
2.49/2.51
Vmin/max
Reference Temperature Coefficient
25
ppm/°C
max
Test Conditions/Comments
F
IN
= 50 kHz Sine Wave
Differential Mode
Single-Ended /Pseudo Differential Mode
Differential Mode
Single-Ended/Pseudo Differential Mode
F
a
= 40.1 kHz, F
b
= 41.5 kHz
F
IN
= 400 kHz
@ 3 dB
@ 0.1 dB
Guaranteed No Missing Codes to 13-Bits
Unipolar Range with Straight Binary output coding
Bipolar Range with Twos Complement Output Coding
V
DD
= +10V min , V
SS
= -10V min, V
CC
= 2.7V to 5.25V
V
DD
= +5V min, V
SS
= -5V min, V
CC
= 2.7V to 5.25V
V
DD
= +5V min, V
SS
= - 5V min, V
CC
= 2.7V to 5.25V
V
DD
= +10V min, V
SS
= 0 V min, V
CC
= 2.7V to 5.25V
When in Track, ±10V Range
When in Track, ±5V, 0 to 10V Range
When in Track, ±2.5V Range
When in Hold
MHz typ
±10V
Volts
Rev. PrE | Page 3 of 18