AD5273BRJ1-REEL7 View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

AD5273BRJ1-REEL7

64-Position OTP Digital Potentiometer

Analog Devices 

AD5273

OTP PROGRAMMED AT MS

VDD = 5.5V

VA = 5.5V

RAB = 10k⍀

VW = 1V/DIV

1V

5V

VDD = 5V/DIV

5␮s

TPC 25. Power-Up Settling Time, after Fuses Blown

10

RAB = 1k⍀

VA = VB = OPEN

TA = 25؇C

1.0

RAB = 10k⍀

RAB = 50k⍀

0.1

RAB = 100k⍀

0.01

0

8

16

24

32

40

48

56 64

CODE – Decimal

TPC 26. IWB_MAX vs. Code

t8

t9

t6

SCL

t2

t3

t4

t5

t9

t7

t8

SDA

t1

P

S

Figure 1. Interface Timing Diagram

t10

P

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

S 0 1 0 1 1 0 A0 1 A E1 E0 D5 D4 D3 D2 D1 D0 A P

SLAVE ADDRESS BYTE

DATA BYTE

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.

–10–

REV. 0

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