参数资料
型号: AD977CRZRL
厂商: Analog Devices Inc
文件页数: 7/24页
文件大小: 0K
描述: IC ADC 16BIT 100KSPS 20SOIC
标准包装: 1,000
位数: 16
采样率(每秒): 100k
数据接口: 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 ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-SOIC(0.295",7.50mm 宽)
供应商设备封装: 20-SOIC W
包装: 带卷 (TR)
输入数目和类型: 3 个单端,单极;3 个单端,双极
配用: EVAL-AD977CB-ND - BOARD EVAL FOR AD977
EVAL-AD977ACB-ND - BOARD EVAL FOR AD977A
AD977/AD977A
–15–
REV. D
Table III. Output Codes and Ideal Input Voltages
Digital Output
Two’s Complement Straight Binary
Description
Analog Input
(SB/
BTC LOW)
(SB/
BTC HIGH)
Full-Scale Range
±10 V
±5 V
±3.33 V
0 V to 10 V
0 V to 5 V
0 V to 4 V
Least Significant Bit
305
V
153
V
102
V
153
V
76
V
61
V
+Full Scale (FS–1 LSB)
9.999695 V
4.999847 V
3.333231 V
9.999847 V
4.999924 V
3.999939 V
0111 1111 1111 1111
1111 1111 1111 1111
Midscale
0 V
5 V
2.5 V
2 V
0000 0000 0000 0000
1000 0000 0000 0000
One LSB Below Midscale
–305
V
–153
V
–102
V
4.999847 V
2.499924 V
1.999939 V
1111 1111 1111 1111
0111 1111 1111 1111
–Full Scale
–10 V
–5 V
–3.333333 V 0 V
0 V
1000 0000 0000 0000
0000 0000 0000 0000
Table IV. Input Ranges, Offset and Full-Scale Errors Without External Resistors
AD977
Offset Error
Full-Scale Error
AD977A
Offset Error
Full-Scale Error
Input Range
A/B/C Grade
Input Range
A/B/C Grade
–9.890 V to 9.90 V
±25 mV/±25 mV
±0.75%/±0.50%
–9.800 V to 9.970 V
±40 mV/±40 mV
±0.80%/±0.55%
–4.943 V to 4.995 V
±25 mV/±25 mV
±0.75%/±0.50%
–4.900 V to 4.985 V
±40 mV/±40 mV
±0.80%/±0.55%
–3.295 V to 3.330 V
±25 mV/±25 mV
±0.75%/±0.50%
–3.267 V to 3.323 V
±40 mV/±40 mV
±0.80%/±0.55%
0.008 V to 9.946 V
±10 mV/±10 mV
±0.75%/±0.50%
0.007 V to 9.893 V
±10 mV/±10 mV
±0.75%/±0.50%
0.004 V to 5.023 V
±10 mV/±10 mV
±0.75%/±0.50%
0.004 V to 5.039 V
±10 mV/±10 mV
±0.75%/±0.50%
0.003 V to 4.010 V
±10 mV/±10 mV
±0.75%/±0.50%
0.003 V to 4.016 V
±10 mV/±10 mV
±0.75%/±0.50%
200
VIN
100
33.2k
2.2 F
R1IN
R2IN
R3IN
REF
AGND2
CAP
AGND1
AD977A
AD8031
200
33.2k
2.2 F
R1IN
R2IN
R3IN
REF
AGND2
CAP
AGND1
AD977A
VIN
100
AD8031
200
VIN
100
33.2k
2.2 F
R1IN
R2IN
R3IN
REF
AGND2
CAP
AGND1
AD977A
AD8031
Figure 11. AD977A Bipolar Input Configuration Using the Internal Reference; (a) VIN =
±10 V, (b) VIN = ±5 V, (c) VIN = ±3.33 V
a.
c.
b.
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