参数资料
型号: AD5273BRJ50-REEL7
厂商: ANALOG DEVICES INC
元件分类: 数字电位计
英文描述: 64-Position OTP Digital Potentiometer
中文描述: 50K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 64 POSITIONS, PDSO8
封装: MO-178BA, SOT-23, 8 PIN
文件页数: 10/20页
文件大小: 987K
代理商: AD5273BRJ50-REEL7
AD5273
–10–
SCL
SDA
t
1
t
2
t
3
t
8
t
8
t
9
t
4
t
5
t
9
t
7
t
6
t
10
P
P
S
Figure 1. Interface Timing Diagram
Table I. SDA Write Mode Bit Format
S
0
1
0
1
1
0
A0
0
A
T
X
X
X
X
X
X
X
A
X
X
D5
D4
D3
D2
D1
D0
A
P
SLAVE ADDRESS BYTE
INSTRUCTION BYTE
DATA BYTE
Table II. SDA Read Mode Bit Format
V
DD
= 5V/DIV
V
W
= 1V/DIV
5V
1V
OTP PROGRAMMED AT MS
V
DD
= 5.5V
V
A
= 5.5V
R
AB
= 10k
5 s
TPC 25. Power-Up Settling Time, after Fuses Blown
CODE – Decimal
10
0
64
16
T
W
32
48
0.01
1.0
0.1
8
24
40
56
V
A
= V
= OPEN
T
A
= 25 C
R
AB
= 10k
R
AB
= 1k
R
AB
= 50k
R
AB
= 100k
TPC 26. I
WB_MAX
vs. Code
SDA BITS DEFINITIONS AND DESCRIPTIONS
S = Start Condition
P = Stop Condition
A = Acknowledge
X = Don’t Care
T = OTP Programming Bit. Logic 1 programs wiper position
permanently.
D5, D4, D3, D2, D1, D0 = Data Bits
E1, E0 = OTP Validation Bits
0, 0 = Ready to Program
0, 1 = Test Fuse not Blown Successfully. (Check Setup.)
1, 0 = Fatal Error. Retry.
1, 1 = Programmed Successfully. No Further Adjustments
Possible.
S
0
1
0
1
1
0
A0
A
E1
E0
D5
D4
D3
D2
D1
D0
A
P
SLAVE ADDRESS BYTE
DATA BYTE
1
REV. 0
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