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參數(shù)資料
| 型號： | AD5174BRMZ-10 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 6/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DGTL POT 1024POS 10K 10MSOP |
| 產(chǎn)品變化通告： | AD5174 Pin Requirement 14/Dec/2010 |
| 標準包裝： | 50 |
| 接片： | 1024 |
| 電阻（歐姆）： | 10k |
| 電路數(shù)： | 1 |
| 溫度系數(shù)： | 標準值 35 ppm/°C |
| 存儲器類型： | 非易失 |
| 接口： | 4 線串行 |
| 電源電壓： | 2.7 V ~ 5.5 V，±2.5 V ~ 2.75 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 10-MSOP |
| 包裝： | 管件 |
AD5174
Rev. B | Page 14 of 20
SHUTDOWN MODE
The AD5174 can be shut down by executing the software
shutdown command, Command 9 (see Table 6), and setting
the LSB to 1. This feature places the RDAC in a zero-power-
consumption state where Terminal A is open circuited and
the wiper terminal, W, remains connected. It is possible to
execute any command from Table 6 while the AD5174 is in
shutdown mode. The parts can be taken out of shutdown
mode by executing Command 9 and setting the LSB to 0
or by a software reset, Command 4 (see Table 6).
RESET
The AD5174 can be reset through software by executing Com-
mand 4 (see Table 6). The reset command loads the RDAC
register with the contents of the most recently programmed 50-TP
memory location. The RDAC register loads with midscale if no
50-TP memory location has been previously programmed.
Table 7. Write and Read to RDAC and 50-TP Memory
DIN
Action
0x1C03
0xXXXX
Enable update of the wiper position and the 50-TP memory contents through the digital interface.
0x0500
0x1C03
Write 0x100 to the RDAC register; wiper moves to full-scale position.
0x0800
0x0500
Prepares data read from RDAC register.
0x0C00
0x100
Stores RDAC register content into the 50-TP memory. A 16-bit word appears out of SDO, where the last 10 bits contain
the contents of the RDAC register (0x100).
0x1800
0x0C00
Prepares data read of the last programmed 50-TP memory monitor location.
0x0000
0xXX19
NOP Instruction 0 sends a 16-bit word out of SDO, where the six LSBs (that is, last six bits) contain the binary address of
the last programmed 50-TP memory location, for example, 0x19 (see Table 10).
0x1419
0x0000
Prepares data read from Memory Location 0x19.
0x2000
0x0100
Prepares 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 C2 = 1, the fuse program command was successful.
1 X is don’t care.
Table 8. Control Register Bit Map
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
0
C2
0
C1
C0
Table 9. Control Register Bit 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 digital interface
C2
50-TP memory program success bit
0 = fuse program command was unsuccessful (default)
1 = fuse program command was successful
1 Wiper position frozen to the last value programmed in the 50-TP memory. The wiper is frozen to midscale if the 50-TP memory has not been previously programmed.
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