AD5274BCPZ-20-RL7 Analog Devices Inc, AD5274BCPZ-20-RL7 Datasheet - Page 22
AD5274BCPZ-20-RL7
Manufacturer Part Number
AD5274BCPZ-20-RL7
Description
256 Tap 5v 50tp, 1% R-tol MSOP 12C I.C.
Manufacturer
Analog Devices Inc
Datasheet
1.AD5274BRMZ-20.pdf
(28 pages)
Specifications of AD5274BCPZ-20-RL7
Resistance (ohms)
20K
Taps
256
Number Of Circuits
1
Temperature Coefficient
5 ppm/°C Typical
Memory Type
Non-Volatile
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V, ±2.5 V ~ 2.75 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
AD5274BCPZ-20-RL7
AD5274BCPZ-20-RL7TR
AD5274BCPZ-20-RL7TR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD5274BCPZ-20-RL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Table 13. Write and Read to RDAC and 50-TP memory
DIN
0x1C03
0x0500
0x0800
0x0C00
0x1800
0x0000
0x1419
0x2000
0x0000
1
Table 14. Control Register Bit Map
DB9
0
Table 15. Control Register Description
Bit Name
C0
C1
C2
C3
1
Table 16. Memory Map
Command Number
5
1
X is don’t care.
Wiper position is frozen to the last value programmed in the 50-TP memory. Wiper freezes to midscale if 50-TP memory has not been previously programmed.
X is don’t care.
0x1C03
0xXXXX
SDO
0xXXXX
0x0500
0x100
0x0C00
0xXX19
0x0000
0x0100
DB8
0
1
Action
Enable update of wiper position and 50-TP memory contents through digital interface.
Write 0x100 to the RDAC register, wiper moves to ¼ full-scale position.
Prepare data read from RDAC register.
Stores RDAC register content into 50-TP memory. 16-bit word appears out of SDO, where last 10-bits contain the
contents of the RDAC Register 0x100.
Prepare data read of last programmed 50-TP memory monitor location.
NOP Instruction 0 sends a 16-bit word out of SDO, where the six LSBs last 6-bits contain the binary address of the last
programmed 50-TP memory location, for example, 0x19 (see Table 16).
Prepares data read from Memory Location 0x19.
Prepare data read from the control register. Sends a 16-bit word out of SDO, where the last 10-bits contain the contents
of Memory Location 0x19.
NOP Instruction 0 sends a 16-bit word out of SDO, where the last four bits contain the contents of the control register.
If Bit C3 = 1, fuse program command successful.
Description
50-TP program enable
1 = enable device for 50-TP program
RDAC register write protect
0 = wiper position frozen to value in 50-TP memory (default)
1 = allow update of wiper position through a digital interface
Resistor performance enable
1 = RDAC resistor tolerance calibration disabled
50-TP memory program success bit
1 = fuse program command successful
0 = 50-TP program disabled (default)
0 = RDAC resistor tolerance calibration enabled (default)
0 = fuse program command unsuccessful (default)
D9
X
X
X
X
X
…
X
X
X
X
X
DB7
0
D8
X
X
X
X
X
…
X
X
X
X
X
D7
X
X
X
X
X
…
X
X
X
X
X
DB6
0
D6
0
0
0
0
0
…
0
0
0
0
0
Data Byte [DB9:DB8]
D5
0
0
0
0
0
…
0
0
0
1
1
DB5
0
D4
0
0
0
0
0
…
0
1
1
0
1
Rev. C | Page 22 of 28
D3
0
0
0
0
0
…
1
0
1
1
0
1
DB4
0
D2
0
0
0
0
1
…
0
1
1
0
0
D1
0
0
1
1
0
…
1
0
1
0
1
1
DB3
C3
0
1
0
1
0
0
0
0
0
0
D0
…
Register Contents
Reserved
1st programmed wiper location (0x01)
2nd programmed wiper location (0x02)
3rd programmed wiper location (0x03)
4th programmed wiper location (0x04)
…
10th programmed wiper location (0xA)
20th programmed wiper location (0x14)
30th programmed wiper location (0x1E)
40th programmed wiper location (0x28)
50th programmed wiper location (0x32)
DB2
C2
AD5272/AD5274
DB1
C1
DB0
C0