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AD5273BRJ10-R2 Datasheet(PDF) 10 Page - Analog Devices

Part No. AD5273BRJ10-R2
Description  64-Position OTP Digital Potentiometer
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD5273
–10–
SCL
SDA
t1
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
010110
A0
0A
T
XXXXXXXA
XX
D5
D4
D3
D2
D1
D0
A
P
SLAVE ADDRESS BYTE
INSTRUCTION BYTE
DATA BYTE
Table II. SDA Read Mode Bit Format
VDD = 5V/DIV
VW = 1V/DIV
5V
1V
OTP PROGRAMMED AT MS
VDD = 5.5V
VA = 5.5V
RAB = 10k
5 s
TPC 25. Power-Up Settling Time, after Fuses Blown
CODE – Decimal
10
064
16
32
48
0.01
1.0
0.1
8
24
40
56
VA = VB= OPEN
TA = 25 C
RAB = 10k
RAB = 1k
RAB = 50k
RAB = 100k
TPC 26. IWB_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
010110
A0
A
E1
E0
D5
D4
D3
D2
D1
D0
A
P
SLAVE ADDRESS BYTE
DATA BYTE
1
REV. 0




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