参数资料
| 型号： | AD5271BRMZ-20 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/24页 |
| 文件大小： | 0K |
| 描述： | IC DGTL POT 20K 256POS 10MSOP |
| 产品变化通告： | AD527(0,1) Pin Requirement 14/Dec/2010 |
| 标准包装： | 50 |
| 接片： | 256 |
| 电阻（欧姆）： | 20k |
| 电路数： | 1 |
| 温度系数： | 标准值 5 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | 4 线串行 |
| 电源电压： | 2.7 V ~ 5.5 V，±2.5 V ~ 2.75 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-MSOP |
| 包装： | 管件 |
| 产品目录页面： | 787 (CN2011-ZH PDF) |
AD5270/AD5271
Data Sheet
Rev. F | Page 20 of 24
SHUT-DOWN MODE
The AD5270/AD5271 can be shut down by executing the
software shutdown command, Command 9 (see Table 11), and
setting the LSB to 1. This feature places the RDAC in a zero-
power-consumption state where Terminal Ax is open circuited
and the Wiper Terminal Wx remains connected. It is possible to
execute any command from Table 11 while the AD5270/AD5271
are 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 11).
RESISTOR PERFORMANCE MODE
This mode activates a new, patented 1% end-to-end resistor
tolerance that ensures a ±1% resistor tolerance error on each
resistor tolerance. The resistor performance mode is activated by
programming Bit C2 of the control register.
RESET
The AD5270/AD5271 can be reset through software by executing
Command 4 (see Table 11). 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 12. Write and Read to RDAC and 50-TP Memory
DIN
SDO1
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 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 six bits contain the binary address of the last
programmed 50-TP memory location, for example, 0x19 (see Table 13).
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 C3 = 1, the fuse program command successful.
1
X is don’t care.
Table 13. Control Register Bit Map
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
0
C3
C2
C1
C0
Table 14. 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
R-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 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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| AD5271BRMZ-20 | 制造商:Analog Devices 功能描述:Digital Potentiometer IC |
| AD5271BRMZ-20-RL7 | 功能描述:IC DGTL POT SGL 256POS 10MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:- 标准包装:3,000 系列:DPP 接片:32 电阻（欧姆）:10k 电路数:1 温度系数:标准值 300 ppm/°C 存储器类型:非易失 接口:3 线串行（芯片选择，递增，增/减） 电源电压:2.5 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WFDFN 裸露焊盘 供应商设备封装:8-TDFN（2x3） 包装:带卷 (TR) |
| AD5272 | 制造商:AD 制造商全称:Analog Devices 功能描述:1024-/256-Position, 1% Resistor Tolerance Error, I2C Interface and 50-TP Memory Digital Rheostat |
| AD5272BCPZ-100-RL7 | 功能描述:IC RHEOSTAT 5V 50-TP 1024 10MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:- 标准包装:3,000 系列:DPP 接片:32 电阻（欧姆）:10k 电路数:1 温度系数:标准值 300 ppm/°C 存储器类型:非易失 接口:3 线串行（芯片选择，递增，增/减） 电源电压:2.5 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WFDFN 裸露焊盘 供应商设备封装:8-TDFN（2x3） 包装:带卷 (TR) |
| AD5272BCPZ-20-RL7 | 功能描述:IC RHEOSTAT 5V 50-TP 1024 10MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:- 标准包装:3,000 系列:DPP 接片:32 电阻（欧姆）:10k 电路数:1 温度系数:标准值 300 ppm/°C 存储器类型:非易失 接口:3 线串行（芯片选择，递增，增/减） 电源电压:2.5 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WFDFN 裸露焊盘 供应商设备封装:8-TDFN（2x3） 包装:带卷 (TR) |
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