参数资料
| 型号： | ADADC80-Z-12 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT INTEGRATED 32-CDIP |
| 标准包装： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 40k |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 800mW |
| 电压电源： | 模拟和数字，双 ± |
| 工作温度： | -25°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 32-CDIP（0.910"，23.12mm） |
| 供应商设备封装： | 32-CDIP 侧面铜焊 |
| 包装： | 管件 |
| 输入数目和类型： | 2 个单端，单极；2 个单端，双极 |
ADADC80
Rev. E | Page 11 of 16
CALIBRATION
External zero adjustment and gain adjustment potentiometers,
connected as shown in Figure 13 and Figure 14, are used for
device calibration. To prevent interaction of these two adjustments,
zero is always adjusted first and gain second. Zero is adjusted
with the analog input near the most negative end of the analog
range (0 for unipolar and FS for bipolar input ranges). Gain is
adjusted with the analog input near the most positive end of the
analog range.
0 V to 10 V Range
Set analog input to +1 LSB = 0.0024 V; adjust zero for digital
output = 111111111110. Zero is now calibrated. Set analog
input to +FSR 2 LSB = 9.9952 V; adjust gain for 000000000001
digital output code. Full-scale gain is now calibrated. For half-
scale calibration check, set analog input to 5.0000 V; digital
output code should be 011111111111.
10 V to +10 V Range
Set analog input to 9.9951 V; adjust zero for 111111111110
digital output (complementary offset binary) code. Set analog
input to +9.9902 V; adjust gain for 000000000001 digital output
(complementary offset binary) code. For half-scale calibration
check, set analog input to 0.0000 V; digital output (complemen-
tary offset binary) code should be 011111111111.
12
14
COMPARATOR
SAR
DAC
13
11
+
REF
ADADC80
1.8M
10k
–15V
+15V
ANALOG
INPUT
0.01F
10M
10k
–15V
+15V
+5V
–15V
+15V
25
24
15
17
9
10
16
REF OUT
(6.3V)
15V OR 12V
ANALOG
GND
–15V OR
–12V
5V DIGITAL
SUPPLY
DIGITAL
GND
GAIN
ADJUST
COMPARATOR
IN
BIPOLAR
OFFSET
OUT
20V
SPAN
IN
10V
SPAN
IN
0
120
2-
01
3
Figure 13. Analog and Power Connections for Unipolar 0 V to 10 V Input Range
12
COMPARATOR
SAR
DAC
13
11
+
REF
ADADC80
1.8M
10k
+15V
ANALOG
INPUT
–15V
0.01F
10M
10k
–15V
+15V
+5V
–15V
+15V
25
24
15
17
9
10
16
REF OUT
(6.3V)
15V OR 12V
ANALOG
GND
–15V OR
–12V
5V DIGITAL
SUPPLY
DIGITAL
GND
GAIN
ADJUST
COMPARATOR
IN
BIPOLAR
OFFSET
OUT
20V
SPAN
IN
10V
SPAN
IN
14
01
20
2-
01
4
Figure 14. Analog and Power Connections for Bipolar ±10 V Input Range
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