参数资料
| 型号： | ISL90843UIU1027Z-TK |
| 厂商： | Intersil |
| 文件页数： | 8/10页 |
| 文件大小： | 0K |
| 描述： | IC XDCP 256-TAP 50OHM 10-MSOP |
| 标准包装： | 1,000 |
| 系列： | XDCP™ |
| 接片： | 256 |
| 电阻（欧姆）： | 50k |
| 电路数： | 4 |
| 存储器类型： | 易失 |
| 接口： | I²C（设备位址） |
| 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： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-MSOP |
| 包装： | 带卷 (TR) |
7
FN8095.2
March 29, 2006
Principles of Operation
The ISL90843 is an integrated circuit incorporating four
DCPs with their associated registers, and an I2C serial
interface providing direct communication between a host
and the potentiometers.
DCP Description
Each DCP is implemented with a combination of resistor
elements and CMOS switches. The physical ends of each
DCP are equivalent to the fixed terminals of a mechanical
potentiometer (RH and RL pins). The RW pin of each 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). Each DCP has its own WR.
When the WR of a DCP contains all zeroes (WR<7:0>: 00h),
its wiper terminal (RW) is closest to its “Low” terminal (RL).
When the WR of a 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 ISL90843 is being powered up, all four WRs are
reset to 80h (128 decimal), which locates RW roughly at the
center between RL and RH.
The WRs can be read or written directly using the I2C serial
interface as described in the following sections. The I2C
interface Address Byte has to be set to 00hex, 01hex,
02hex, and 03hex to access the WR of DCP0, DCP1, DCP2,
and DCP3 respectively.
I2C Serial Interface
The ISL90843 supports a bidirectional bus oriented protocol.
The protocol defines any device that sends data onto the
FIGURE 7. END TO END RTOTAL % CHANGE vs
TEMPERATURE
FIGURE 8. TC FOR VOLTAGE DIVIDER MODE IN ppm
FIGURE 9. MIDSCALE GLITCH, CODE 80h TO 7Fh (WIPER 0)
FIGURE 10. LARGE SIGNAL SETTLING TIME
Typical Performance Curves (Continued)
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
-40
-20
0
204060
80
TEMPERATURE (°C)
END
TO
E
N
D
R
TOTA
L
CHANGE
(%)
5.5V
2.7V
-20
-10
0
10
20
32
82
132
182
232
TAP POSITION (DECIMAL)
TC
(ppm
/°C)
Wiper Movement Mid Point
From 80h to 7fh
Signal at Wiper (Wiper Unloaded)
SCL
Signal at Wiper
(Wiper Unloaded Movement
From ffh to 00h)
ISL90843
相关PDF资料 |
PDF描述 |
|---|---|
| ISL95310WIU10Z | IC XDCP 128-TAP 10KOHM 10-MSOP |
| ISL95311WIU10Z | IC XDCP 128-TAP 10KOHM 10-MSOP |
| ISL95810WIU8-T | IC XDCP SGL 256-TAP 10KOHM 8MSOP |
| ISL95811WFRTZ | IC POT 256TAPS 5BYTES 8-TDFN |
| ISL96017UIRT8Z | IC POT DGTL 50K OHM 8-TDFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL90843WIU1027Z | 功能描述:IC XDCP 256-TAP 10OHM MSOP-10 RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:XDCP™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 接片:32 电阻（欧姆）:50k 电路数:1 温度系数:标准值 50 ppm/°C 存储器类型:易失 接口:3 线串行（芯片选择，递增，增/减） 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:SOT-23-6 细型，TSOT-23-6 供应商设备封装:TSOT-23-6 包装:带卷 (TR) |
| ISL90843WIU1027Z-TK | 功能描述:IC XDCP 256-TAP 10OHM 10-MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:XDCP™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 接片:32 电阻（欧姆）:50k 电路数:1 温度系数:标准值 50 ppm/°C 存储器类型:易失 接口:3 线串行（芯片选择，递增，增/减） 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:SOT-23-6 细型，TSOT-23-6 供应商设备封装:TSOT-23-6 包装:带卷 (TR) |
| ISL9103 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:500mA 2.4MHz Low IQ High Efficiency Synchronous Buck Converter |
| ISL9103A | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:500mA 2.4MHz Low IQ High Efficiency Synchronous Buck Converter |
| ISL9103AIRUAZ-T | 功能描述:IC REG BUCK SYNC ADJ 0.5A 6UTDFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:50 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:5 V ~ 25 V 输入电压:2.3 V ~ 5.5 V PWM 型:电流模式 频率 - 开关:600kHz，1.2MHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 包装:管件 供应商设备封装:8-MSOP |
发布紧急采购，3分钟左右您将得到回复。