参数资料
型号: AD7982BRMZ
厂商: Analog Devices Inc
文件页数: 18/24页
文件大小: 0K
描述: IC ADC 18BIT 1MSPS PULSAR 10MSOP
产品培训模块: Motor Control
设计资源: Converting a Single-Ended Signal with AD7982 Differential PulSAR ADC (CN0032)
Precision Single-Supply Differential ADC Driver for Industrial-Level Signals (CN0180)
标准包装: 1
系列: PulSAR®
位数: 18
采样率(每秒): 1M
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 8.6mW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
供应商设备封装: 10-MSOP
包装: 管件
输入数目和类型: 1 个差分,单极
产品目录页面: 780 (CN2011-ZH PDF)
Data Sheet
AD7982
Rev. B | Page 3 of 24
SPECIFICATIONS
VDD = 2.5 V, VIO = 2.3 V to 5.5 V, REF = 5 V, TA = 40°C to +85°C, unless otherwise noted.
Table 2.
Parameter
Conditions
Min
Typ
Max
Unit
RESOLUTION
18
Bits
ANALOG INPUT
Voltage Range
IN+ IN
VREF
+VREF
V
Absolute Input Voltage
IN+, IN
0.1
VREF + 0.1
V
Common-Mode Input Range
IN+, IN
VREF × 0.475
VREF × 0.5
VREF × 0.525
V
Analog Input CMRR
fIN = 450 kHz
67
dB
Leakage Current at 25°C
Acquisition phase
200
nA
Input Impedance
See the Analog Inputs section
ACCURACY
No Missing Codes
18
Bits
Differential Linearity Error
0.85
±0.5
+1.5
LSB1
Integral Linearity Error
2
±1
+2
LSB1
Transition Noise
REF = 5 V
1.05
LSB1
Gain Error, TMIN to TMAX2
0.023
+0.004
+0.023
% of FS
Gain Error Temperature Drift
±1
ppm/°C
Zero Error, TMIN to TMAX2
±100
+700
V
Zero Temperature Drift
0.5
ppm/°C
Power Supply Rejection Ratio
VDD = 2.5 V ± 5%
90
dB
THROUGHPUT
Conversion Rate
0
1
MSPS
Transient Response
Full-scale step
290
ns
AC ACCURACY
Dynamic Range
VREF = 5 V
97
99
VREF = 2.5 V
93
Oversampled Dynamic Range4
FO = 1 kSPS
129
Signal-to-Noise
fIN = 1 kHz, VREF = 5 V, TA = 25°C
95.5
98
fIN = 1 kHz, VREF = 2.5 V, TA = 25°C
92.5
Spurious-Free Dynamic Range
fIN = 10 kHz
115
Total Harmonic Distortion5
fIN = 10 kHz
120
Signal-to-(Noise + Distortion)
fIN = 1 kHz, VREF = 5 V, TA = 25°C
97
1
LSB means least significant bit. With the ±5 V input range, 1 LSB is 38.15 V.
2
See Terminology section. These specifications include full temperature range variation but not the error contribution from the external reference.
3
All specifications expressed in decibels are referred to a full-scale input FSR and tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
4
Dynamic range is obtained by oversampling the ADC running at a throughput Fs of 1 MSPS followed by postdigital filtering with an output word rate of FO.
5
Tested fully in production at fIN = 1 kHz.
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