参数资料
| 型号： | X9252UV24I-2.7 |
| 厂商： | Intersil |
| 文件页数： | 19/20页 |
| 文件大小： | 0K |
| 描述： | IC DCP QUAD 50K 256TAP 24-TSSOP |
| 标准包装： | 62 |
| 系列： | XDCP™ |
| 接片： | 256 |
| 电阻（欧姆）： | 50k |
| 电路数： | 4 |
| 温度系数： | 标准值 ±300 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | I²C（芯片选择，设备位址，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： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP |
| 包装： | 管件 |
8
FN8167.2
November 14, 2005
Test Circuit
Equivalent Circuit
Principles of Operation
The X9252 is an integrated circuit incorporating four resistor
arrays, their associated registers and counters, and the
serial interface logic providing direct communication
between the host and the digitally controlled potentiometers.
This section provides detail description of the following:
-Resistor Array
- Up/Down Interface
- 2-wire Interface
Resistor Array Description
The X9252 is comprised of four resistor arrays. Each array
contains 255 discrete resistive segments that are connected
in series. The physical ends of each array are equivalent to
the fixed terminals of a mechanical potentiometer (RHi and
RLi inputs) (See Figure 1.)
At both ends of each array and between each resistor
segment is a switch connected to the wiper (RWi) pin.
Within each individual array only one switch may be turned
on at a time.
These switches are controlled by a Wiper Counter Register
(WCR). The 8-bits of the WCR (WCR[7:0]) are decoded to
select and enable one of 256 switches (see Table 1). Note
that each wiper has a dedicated WCR. When all bits of a
WCR are zeroes, the switch closest to the corresponding RL
pin is selected. When all bits of a WCR are ones, the switch
closest to the corresponding RH pin is selected.
The WCR is volatile and may be written directly. There are
four non-volatile Data Registers (DR) associated with each
WCR. Each DR can be loaded into WCR. All DRs and
WCRs can be read or written.
Power Up and Down Requirements
During power up, CS must be high, to avoid inadvertant
“store” operations. At power up, the contents of Data
Registers DR00, DR10, DR20, and DR30, are loaded into
the corresponding wiper counter register.
Force
Current
Test Point
RW
CH
CL
RW
RTOTAL
CW
RH
RL
One
WCR[7:0]
RHi
RWi
RLi
= FF hex
255
254
253
252
of
256
Decoder
Volatile
8-bit
Wiper
Counter
Register
WCRi
Four
Non-Volatile
Data
Registers
DRi0, DRi1,
DRi2, and
DRi3
i = 0, 1, 2, and 3
Interface Control and
WCR[7:0]
= 00 hex
2
1
0
Volatile Status Register (SR)
(Shared by the Four DCPs)
WP
SCL
SDA
A2, A1, A0
CS
U/D
DS1, DS0
FIGURE 1. DETAILED BLOCK DIAGRAM OF ONE DCP
X9252
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相关代理商/技术参数 |
参数描述 |
|---|---|
| X9252UV24IZ-2.7 | 功能描述:IC POT DGTL QUAD 50K OHM 24TSSOP 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: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) |
| X9252WAZ WAF | 制造商:Intersil Corporation 功能描述: |
| X9252WS24I-2.7 | 功能描述:IC XDCP QUAD 256TAP 10K 24-SOIC 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) |
| X9252WS24IZ-2.7 | 制造商:Intersil Corporation 功能描述:DGTL POTENTIOMETER 256POS 10KOHM QUAD 24SOIC W - Rail/Tube |
| X9252WV24-2.7 | 功能描述:IC DCP QUAD 10K 256TAP 24-TSSOP 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) |
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