参数资料
型号: AD5253BRU100
厂商: ANALOG DEVICES INC
元件分类: 数字电位计
英文描述: Dual, 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers
中文描述: QUAD 100K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 64 POSITIONS, PDSO20
封装: MO-153AC, TSSOP-20
文件页数: 9/28页
文件大小: 834K
代理商: AD5253BRU100
AD5253/AD5254
PIN CONFIGURATION AND FUNCTIONAL DESCRIPTIONS
Rev. 0 | Page 9 of 28
AD5253/
AD5254
TOP VIEW
(Not to Scale)
W0
1
B0
2
A0
3
AD0
4
5
W1
1
B1
2
A1
3
SDA
4
V
SS
5
V
DD
W3
B3
A3
AD1
10
9
8
7
6
DGND
SCL
W2
B2
A2
10
9
8
7
6
0
WP
Figure 2. AD5253/AD5254 Pin Configuration
Table 5. AD5253/AD5254 Pin Function Descriptions
Pin
No.
Mnemonic
Description
1
W0
Wiper Terminal of RDAC0. V
SS
≤ V
W0
≤ V
DD
.
2
B0
B Terminal of RDAC0. V
SS
≤ V
B0
≤ V
DD
.
3
A0
A Terminal of RDAC0. V
SS
≤ V
A0
≤ V
DD
.
4
AD0
I
2
C Device Address 0. AD0 and AD1 allow four AD5253/AD5254s to be addressed.
5
WP
Write Protect, Active Low. V
WP
≤ V
DD
+ 0.3 V.
6
W1
Wiper Terminal of RDAC1. V
SS
≤ V
W1
≤ V
DD
.
7
B1
B Terminal of RDAC1. V
SS
≤ V
B1
≤ V
DD
.
8
A1
A Terminal of RDAC1. V
SS
≤ V
A1
≤ V
DD
.
9
SDA
Serial Data Input/Output Pin. Shifts in one bit at a time on positive clock CLK edges. MSB loaded first. Open-drain
MOSFET requires pull-up resistor.
10
V
SS
Negative Supply. Connect to 0 V for single supply or –2.7 V for dual supply, where V
DD
– V
SS
≤ +5.5 V. If V
SS
is used,
rather than grounded, in dual supply, V
SS
must be able to sink 35 mA for 26 ms when storing data to EEMEM.
11
A2
A Terminal of RDAC2. V
SS
≤ V
A2
≤ V
DD
.
12
B2
B Terminal of RDAC2. V
SS
≤ V
B2
≤ V
DD
.
13
W2
Wiper Terminal of RDAC2. V
SS
≤ V
W2
≤ V
DD
.
14
SCL
Serial Input Register Clock Pin. Shifts in one bit at a time on positive clock edges. V
SCL
≤ (V
DD
+ 0.3 V). Pull-up resistor
is recommended for SCL to ensure minimum power.
15
DGND
Digital Ground. Connect to system analog ground at a single point.
16
AD1
I
2
C Device Address 1. AD0 and AD1 allow four AD5253/AD5254s to be addressed.
17
A3
A Terminal of RDAC3. V
SS
≤ V
A3
≤ V
DD
.
18
B3
B Terminal of RDAC3. V
SS
≤ V
B3
≤ V
DD
.
19
W3
W Terminal of RDAC3. V
SS
≤ V
W3
≤ V
DD
.
20
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
– V
SS
≤ 5.5 V.
V
DD
must be able to source 35 mA for 26 ms when storing data to EEMEM.
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