參數(shù)資料
型號(hào)： AD5274BRMZ-100-RL7
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 15/28頁(yè)
文件大?。?/td> 0K
描述： IC RHEOSTAT 5V 50-TP 256 10MSOP
標(biāo)準(zhǔn)包裝： 1,000
接片： 256
電阻（歐姆）： 100k
電路數(shù)： 1
溫度系數(shù)： 標(biāo)準(zhǔn)值 5 ppm/°C
存儲(chǔ)器類(lèi)型： 非易失
接口： I²C
電源電壓： 2.7 V ~ 5.5 V，±2.5 V ~ 2.75 V
工作溫度： -40°C ~ 125°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 10-TFSOP，10-MSOP（0.118"，3.00mm 寬）
供應(yīng)商設(shè)備封裝： 10-MSOP
包裝： 帶卷 (TR)
AD5272/AD5274
Data Sheet
Rev. D | Page 22 of 28
Table 13. Write and Read to RDAC and 50-TP memory
DIN
Action
0x1C03
0xXXXX
Enable update of wiper position and 50-TP memory contents through digital interface.
0x0500
0x1C03
Write 0x100 to the RDAC register, wiper moves to full-scale position.
0x0800
0x0500
Prepare data read from RDAC register.
0x0C00
0x100
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.
0x1800
0x0C00
Prepare data read of last programmed 50-TP memory monitor location.
0x0000
0xXX19
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).
0x1419
0x0000
Prepares data read from Memory Location 0x19.
0x2000
0x0100
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.
0x0000
0xXXXX
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.
1 X is don’t care.
Table 14. Control Register Bit Map
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
0
C3
C2
C1
C0
Table 15. Control Register Description
Bit Name
Description
C0
50-TP program enable
0 = 50-TP program disabled (default)
1 = enable device for 50-TP program
C1
RDAC register write protect
0 = wiper position frozen to value in 50-TP memory (default)1
1 = allow update of wiper position through a digital interface
C2
Resistor performance enable
0 = RDAC resistor tolerance calibration enabled (default)
1 = RDAC resistor tolerance calibration disabled
C3
50-TP memory program success bit
0 = fuse program command unsuccessful (default)
1 = fuse program command successful
1 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.
Table 16. Memory Map
Command Number
Data Byte [DB9:DB8]1
Register Contents
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
5
X
0
Reserved
X
0
1
1st programmed wiper location (0x01)
X
0
1
0
2nd programmed wiper location (0x02)
X
0
1
3rd programmed wiper location (0x03)
X
0
1
0
4th programmed wiper location (0x04)
…
X
0
1
0
1
0
10th programmed wiper location (0xA)
X
0
1
0
1
0
20th programmed wiper location (0x14)
X
0
1
0
30th programmed wiper location (0x1E)
X
0
1
0
1
0
40th programmed wiper location (0x28)
X
0
1
0
1
0
50th programmed wiper location (0x32)
1 X is don’t care.
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