参数资料
型号: AD7732BRUZ-REEL7
厂商: Analog Devices Inc
文件页数: 23/32页
文件大小: 0K
描述: IC ADC 24BIT 2CH SIG-DEL 28TSSOP
标准包装: 1,000
位数: 24
采样率(每秒): 15.4k
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 100mW
电压电源: 模拟和数字
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 28-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 28-TSSOP
包装: 带卷 (TR)
输入数目和类型: 2 个差分,单极;2 个差分,双极
配用: EVAL-AD7732EBZ-ND - BOARD EVAL FOR AD7732
AD7732
Rev. A | Page 3 of 32
AD7732—SPECIFICATIONS
Table 1. (–40°C to +105°C; AVDD = 5 V ± 5%; DVDD = 2.7 V to 3.6 V, or 5 V ± 5%; BIAS (all), REFIN(+) = 2.5 V;
REFIN(–) = AGND; RA, RB, RC, RD open circuit; AIN Range = ±10 V; fMCLKIN = 6.144 MHz; unless otherwise noted.)
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
ADC PERFORMANCE
CHOPPING ENABLED
Conversion Time Rate
372
12190
Hz
Configure via Conv. Time Register
No Missing Codes1, 2
24
Bits
FW ≥ 6 (Conversion Time ≥ 165 μs)
Output Noise
Resolution
Integral Nonlinearity (INL) 1, 2, 3
±0.0003
±0.0015
% of FSR
fMCLKIN = 2.5 MHz, VCM = 0 V
Integral Nonlinearity (INL) 2, 3
±0.0010
±0.0030
% of FSR
fMCLKIN = 6.144 MHz, VCM = 0 V
Offset Error (Unipolar, Bipolar)4
±13
mV
Before Calibration
Offset Drift vs. Temperature1
±2.5
μV/°C
Gain Error3
±0.7
%
Before Calibration
Gain Drift vs. Temperature1
±3.2
ppm of FS/°C
Positive Full-Scale Error4
±0.7
% of FSR
Before Calibration
Positive Full-Scale Drift vs. Temp.1
±3
ppm of FS/°C
Bipolar Negative Full-Scale Error5
±0.0060
% of FSR
After Calibration
Common-Mode Rejection
50
65
dB
At DC
Power Supply Sensitivity
±4
±10
LSB16
At DC, AIN = 7 V, AVDD = 5 V ± 5%
Channel-to-Channel Isolation
110
dB
At DC, Maximum ±16.5 V AIN Voltage
ADC PERFORMANCE
CHOPPING DISABLED
Conversion Time Rate
737
15437
Hz
Configure via Conv. Time Register
No Missing Codes1, 2
24
Bits
FW ≥ 8 (Conversion Time ≥ 117 μs)
Output Noise
Resolution
Integral Nonlinearity (INL) 2, 3
±0.0015
% of FSR
Offset Error (Unipolar, Bipolar)6
±10
mV
Before Calibration
Offset Drift vs. Temperature
±25
μV/°C
Gain Error4
±0.5
%
Before Calibration
Gain Drift vs. Temperature
±5.3
ppm of FS/°C
Positive Full-Scale Error4
±0.5
% of FSR
Before Calibration
Positive Full-Scale Drift vs. Temp.
±4
ppm of FS/°C
Bipolar Negative Full-Scale Error5
±0.0060
% of FSR
After Calibration
Common-Mode Rejection
55
dB
At DC
Power Supply Sensitivity
±4
LSB16
At DC, AIN = 7 V, AVDD = 5 V ± 5%
Channel-to-Channel Isolation
110
dB
At DC, Maximum ±16.5 V AIN Voltage
ANALOG INPUTS
Analog Input Differential Voltage7
±10 V Range
±10
V
0 V to +10 V Range
0 to +10
V
±5 V Range
±5
V
0 V to +5 V Range
0 to +5
V
AIN Absolute Voltage1, 2, 8
–16.5
+16.5
V
0
2.5
AVDD
V
RA, RB, RC, RD Voltage1
–10.5
+20
V
100
124
AIN Pin Impedance1, 9
87.5
108.5
BIAS Pin Impedance1, 9
12.5
15.5
k
Ω
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