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参数资料
型号： AD8402ARU100-REEL
厂商： Analog Devices Inc
文件页数： 4/32页
文件大小： 0K
描述： IC POT DIG DUAL 100K 8B 14TSSOP
产品变化通告： Product Discontinuance 27/Oct/2011
标准包装： 2,500
接片： 256
电阻（欧姆）： 100k
电路数： 2
温度系数： 标准值 500 ppm/°C
存储器类型： 易失
接口： 3 线 SPI（芯片选择）
电源电压： 2.7 V ~ 5.5 V
工作温度： -40°C ~ 125°C
安装类型： 表面贴装
封装/外壳： 14-TSSOP（0.173"，4.40mm 宽）
供应商设备封装： 14-TSSOP
包装： 带卷 (TR)
AD8400/AD8402/AD8403
Rev. E | Page 12 of 32
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
B1
1
GND
2
CS
3
SDI
4
A1
8
W1
7
VDD
6
CLK
5
AD8400
TOP VIEW
(Not to Scale)
01
09
2-
00
6
Figure 6. AD8400 Pin Configuration
1
2
3
4
5
6
7
AD8402
B2
A2
W2
CS
SHDN
DGND
AGND
14
13
12
11
10
9
8
A1
W1
VDD
SDI
CLK
RS
B1
TOP VIEW
(Not to Scale)
01
09
2-
00
7
Figure 7. AD8402 Pin Configuration
AGND2
1
B2
2
A2
3
W2
4
B1
24
A1
23
W1
22
AGND1
21
AGND4
5
B4
6
A4
7
B3
20
A3
19
W3
18
W4
8
AGND3
17
DGND
9
VDD
16
SHDN
10
RS
15
CS
11
CLK
14
SDI
12
SDO
13
AD8403
TOP VIEW
(Not to Scale)
01
09
2-
00
8
Figure 8. AD8403 Pin Configuration
Table 7. AD8400 Pin Function Descriptions
Pin No.
Mnemonic
Description
1
B1
Terminal B RDAC.
2
GND
Ground.
3
CS
Chip Select Input, Active Low. When CS returns high, data in the serial input register is decoded,
based on the address bits, and loaded into the target DAC register.
4
SDI
Serial Data Input.
5
CLK
Serial Clock Input, Positive Edge Triggered.
6
VDD
Positive Power Supply. Specified for operation at both 3 V and 5 V.
7
W1
Wiper RDAC, Addr = 002.
8
A1
Terminal A RDAC.
Table 8. AD8402 Pin Function Descriptions
Pin No.
Mnemonic
Description
1
AGND
Analog Ground.1
2
B2
Terminal B RDAC 2.
3
A2
Terminal A RDAC 2.
4
W2
Wiper RDAC 2, Addr = 012.
5
DGND
Digital Ground.1
6
SHDN
Terminal A Open Circuit. Shutdown controls Variable Resistor 1 and Variable Resistor 2.
7
CS
Chip Select Input, Active Low. When CS returns high, data in the serial input register is decoded,
based on the address bits, and loaded into the target DAC register.
8
SDI
Serial Data Input.
9
CLK
Serial Clock Input, Positive Edge Triggered.
10
RS
Active Low Reset to Midscale. Sets RDAC registers to 80H.
11
VDD
Positive Power Supply. Specified for operation at both 3 V and 5 V
12
W1
Wiper RDAC 1, Addr = 002.
13
A1
Terminal A RDAC 1.
14
B1
Terminal B RDAC 1.
1 All AGND pins must be connected to DGND.
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