参数资料
| 型号： | ISL95810WIRT8Z-T |
| 厂商： | Intersil |
| 文件页数： | 12/13页 |
| 文件大小： | 0K |
| 描述： | IC XDCP 256-TAP 10KOHM 8-TDFN |
| 标准包装： | 6,000 |
| 系列： | XDCP™ |
| 接片： | 256 |
| 电阻（欧姆）： | 10k |
| 电路数： | 1 |
| 温度系数： | 标准值 ±45 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | I²C |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WDFN 裸露焊盘 |
| 供应商设备封装： | 8-TDFN（3x3） |
| 包装： | 带卷 (TR) |
8
FN8090.2
September 19, 2006
Principles of Operation
The ISL95810 is an integrated circuit incorporating one DCP
with its associated registers, non-volatile memory, and a I2C
serial interface providing direct communication between a
host and the potentiometer and memory.
DCP Description
The DCP is implemented with a combination of resistor
elements and CMOS switches. The physical ends of the
DCP are equivalent to the fixed terminals of a mechanical
potentiometer (RH and RL pins). The RW pin of the DCP is
connected to intermediate nodes, and is equivalent to the
wiper terminal of a mechanical potentiometer. The position
of the wiper terminal within the DCP is controlled by an 8-bit
volatile Wiper Register (WR). The DCP has its own WR.
When the WR of the DCP contains all zeroes (WR<7:0>:
00h), its wiper terminal (RW) is closest to its “Low” terminal
(RL). When the WR of the DCP contains all ones (WR<7:0>:
FFh), its wiper terminal (RW) is closest to its “High” terminal
(RH). As the value of the WR increases from all zeroes (00h)
to all ones (255 decimal), the wiper moves monotonically
from the position closest to RL to the closest to RH. At the
same time, the resistance between RW and RL increases
monotonically, while the resistance between RH and RW
decreases monotonically.
While the ISL95810 is being powered up, The WR is reset to
80h (128 decimal), which locates RW roughly at the center
between RL and RH. Soon after the power supply voltage
becomes large enough for reliable non-volatile memory
reading, the ISL95810 reads the value stored in non-volatile
Initial Value Registers (IVRs) and loads it into the WR.
The WR and IVR can be read or written directly using the
I2C serial interface as described in the following sections.
Memory Description
The ISL95810 volatile and non-volatile registers are
accessed by I2C interface operations at addresses 0 and 2
decimal. The non-volatile byte at addresses 0 contains the
initial value loaded at power-up into the volatile Wiper
Register (WR) of the DCP. The byte at address 1 is
reserved; the user should not write to it, and its value should
be ignored if read.
The volatile WR, and the non-volatile Initial Value Register
(IVR) of the DCP are accessed with the same Address Byte,
set to 00 hex in both cases.
A volatile byte at address 2 decimal, controls what byte is
read or written when accessing DCP registers: the WR, the
IVR, or both.
When the byte at address 2 is all zeroes, which is the default
at power-up:
A read operation to addresses 0 outputs the value of the
non-volatile IVR.
A write operation to addresses 0 writes the same value to
the WR and IVR of the corresponding DCP.
When the byte at address 2 is 80h (128 decimal):
A read operation to addresses 0 outputs the value of the
volatile WR.
A write operation to addresses 0 only writes to the
corresponding volatile WR.
It is not possible to write to an IVR without writing the same
value to its corresponding WR.
00h and 80h are the only values that should be written to
address 2. All other values are reserved and must not be
written to address 2.
FIGURE 13. MIDSCALE GLITCH, CODE 80h to 7Fh (WIPER 0)
FIGURE 14. LARGE SIGNAL SETTLING TIME
Typical Performance Curves (Continued)
Wiper Movement Mid Point
From 80h to 7fh
Signal at Wiper (Wiper Unloaded)
SCL
Signal at Wiper
(Wiper Unloaded Movement
From ffh to 00h)
ISL95810
相关PDF资料 |
PDF描述 |
|---|---|
| VE-B6V-MY-F1 | CONVERTER MOD DC/DC 5.8V 50W |
| VI-2TH-MW | CONVERTER MOD DC/DC 52V 100W |
| VE-B6T-MY-F4 | CONVERTER MOD DC/DC 6.5V 50W |
| ISL95810UIRT8Z-T | IC XDCP 256-TAP 50KOHM 8-TDFN |
| M83723/74W1831N | CONN RCPT 31POS JAM NUT W/PINS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL95810WIRT8ZTR5481 | 制造商:Intersil Corporation 功能描述:ISL95810W PRE-PROGRAMMED TO LOWEST RESISTANCE SETTING, XDCP, - Tape and Reel |
| ISL95810WIU8 | 功能描述:IC DIGITAL POT 256TP LN LP 8MSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:XDCP™ 标准包装:2,500 系列:XDCP™ 接片:256 电阻（欧姆）:100k 电路数:1 温度系数:标准值 ±300 ppm/°C 存储器类型:非易失 接口:I²C（设备位址） 电源电压:2.7 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) |
| ISL95810WIU8-T | 功能描述:IC XDCP SGL 256-TAP 10KOHM 8MSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:XDCP™ 标准包装:2,500 系列:XDCP™ 接片:256 电阻（欧姆）:100k 电路数:1 温度系数:标准值 ±300 ppm/°C 存储器类型:非易失 接口:I²C（设备位址） 电源电压:2.7 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) |
| ISL95810WIU8Z | 功能描述:数字电位计 IC SINGLE 256 TAP I2C 10KOHM XDCP 8LD IND RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| ISL95810WIU8Z-T | 功能描述:IC XDCP 256-TAP 10KOHM 8-MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:XDCP™ 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) |
发布紧急采购，3分钟左右您将得到回复。