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AD7322 参数 Datasheet PDF下载

AD7322图片预览
型号: AD7322
PDF下载: 下载PDF文件 查看货源
内容描述: 软件可选的真双极性输入,双通道, 12位加符号位ADC [Software Selectable True Bipolar Input, 2-Channel, 12-Bit Plus Sign ADC]
分类和应用:
文件页数/大小: 18 页 / 844 K
品牌: ATMEL [ ATMEL CORPORATION ]
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AD7322
AD7322—SPECIFICATIONS
Preliminary Technical Data
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
DYNAMIC PERFORMANCE
Signal to Noise Ratio (SNR)
Signal to Noise + Distortion (SINAD)
2
Total Harmonic Distortion (THD)
2
Peak Harmonic or Spurious Noise
(SFDR)
2
Intermodulation Distortion (IMD)
Second Order Terms
Third Order Terms
Aperature Delay
2
Aperature Jitter
2
Common Mode Rejection (CMRR)
2
Channel-to-Channel Isolation
2
Full Power Bandwidth
2
DC ACCURACY
Resolution
Integral Nonlinearity
2
Differential Nonlinearity
2
Offset Error
Offset Error Match
2
Gain Error
2
Gain Error Match
2
Positive Full-Scale Error
2
Positive Full Scale Error Match
2
Bipolar Zero Error
2
Bipolar Zero Error Match
2
Negative Full Scale Error
2
Negative Full Scale Error Match
2
ANALOG INPUT
Input Voltage Ranges
(Programmed via Range Register)
2
Specification
78
75
77
74
-TBD
-TBD
-88
-88
10
50
TBD
-80
13
1.5
12+Sign
±1.5
± 0.95
±6
±0.5
±2
±0.6
±2
±0.6
±6
±0.5
±2
±0.5
±10V
±5V
±2.5V
0 to 10V
±10
8
11
19
6
+2.5 to +3V
±1
20
2.49/2.51
25
Units
dB min
dB min
dB min
dB min
dB max
dB 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
dB typ
dB typ
ns max
ps typ
dB typ
dB typ
MHz typ
MHz typ
Bits
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
Volts
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
DC Leakage Current
Input Capacitance
nA max
pF typ
pF typ
pF typ
pF typ
V min to
max
µA max
pF typ
Vmin/max
ppm/°C
max
REFERENCE INPUT/OUTPUT
Input Voltage Range
Input DC Leakage Current
Input Capactiance
Reference Output Voltage
Reference Temperature Coefficient
Rev. PrE | Page 3 of 18