参数资料
型号: EVAL-AD5252EBZ
厂商: Analog Devices Inc
文件页数: 28/28页
文件大小: 0K
描述: BOARD EVAL FOR AD5252
标准包装: 1
主要目的: 数字电位器
已用 IC / 零件: AD5252
主要属性: 2 通道,256 位置
次要属性: I²C 接口
已供物品:
Data Sheet
AD5251/AD5252
Rev. D | Page 9 of 28
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
1
2
3
4
5
6
7
AD0
WP
W1
SDA
A1
B1
VDD
14
13
12
11
10
9
8
B3
A3
AD1
VSS
SCL
DGND
W3
03823-0-002
AD5251/
AD5252
TOP VIEW
(Not to Scale)
Figure 2. Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
V
DD
Positive Power Supply Pin. Connect +2.7 V to +5 V for single supply or ±2.7 V for dual supply, where
V
DD – VSS ≤ 5.5 V. VDD must be able to source 35 mA for 26 ms when storing data to EEMEM.
2
AD0
I2C Device Address 0. AD0 and AD1 allow four AD5251/AD5252 devices to be addressed.
3
WP
Write Protect, Active Low. V
WP ≤ VDD + 0.3 V.
4
W1
Wiper Terminal of RDAC1. V
SS ≤ VW1 ≤ VDD.
5
B1
B Terminal of RDAC1. V
SS ≤ VB1 ≤ VDD.
6
A1
A Terminal of RDAC1. V
SS ≤ VA1 ≤ VDD.
7
SDA
Serial Data Input/Output Pin. Shifts in one bit at a time upon positive clock edges. MSB loaded first.
Open-drain MOSFET requires pull-up resistor.
8
V
SS
Negative Supply. Connect to 0 V for single supply or –2.7 V for dual supply, where V
DD – VSS ≤ +5.5 V. If
V
SS is used in dual supply, VSS must be able to sink 35 mA for 26 ms when storing data to EEMEM.
9
SCL
Serial Input Register Clock Pin. Shifts in one bit at a time upon positive clock edges. V
SCL ≤ (VDD + 0.3 V).
Pull-up resistor is recommended for SCL to ensure minimum power.
10
DGND
Digital Ground. Connect to system analog ground at a single point.
11
AD1
I2C Device Address 1. AD0 and AD1 allow four AD5251/AD5252 devices to be addressed.
12
A3
A Terminal of RDAC3. V
SS ≤ VA3 ≤ VDD.
13
B3
B Terminal of RDAC3. V
SS ≤ VB3 ≤ VDD.
14
W3
Wiper Terminal of RDAC3. V
SS ≤ VW3 ≤ VDD.
1 For quad-channel device software compatibility, the dual potentiometers in the parts are designated as RDAC1 and RDAC3.
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