参数资料
型号: X9269UV24
厂商: Intersil
文件页数: 21/24页
文件大小: 0K
描述: IC XDCP DUAL 256TAP 50K 24-TSSOP
标准包装: 62
系列: XDCP™
接片: 256
电阻(欧姆): 50k
电路数: 2
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: 4.5 V ~ 5.5 V
工作温度: 0°C ~ 70°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
6
FN8173.4
April 17, 2007
PRINCIPLES OF OPERATION
The X9269 is a integrated microcircuit incorporating
four resistor arrays and 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 Description
– Serial Interface Description
– Instruction and Register Description.
Array Description
The X9269 is comprised of a resistor array (See Figure
1). 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 (RH and RL inputs).
At both ends of each array and between each resistor
segment is a CMOS switch connected to the wiper
(RW) output. 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).
The WCR may be written directly. These Data
Registers can the WCR can be read and written by the
host system.
Power-up and Down Requirements.
There are no restrictions on the power-up or power-
down conditions of VCC and the voltages applied to
the potentiometer pins provided that VCC is always
more positive than or equal to VH, VL, and VW, i.e.,
VCC ≥ VH, VL, VW. The VCC ramp rate specification is
always in effect.
Figure 1. Detailed Potentiometer Block Diagram
SERIAL DATA PATH
FROM INTERFACE
CIRCUITRY
REGISTER 0
REGISTER 1
REGISTER 2
REGISTER 3
SERIAL
BUS
INPUT
PARALLEL
BUS
INPUT
COUNTER
REGISTER
INC/DEC
LOGIC
UP/DN
CLK
MODIFIED SCL
UP/DN
RH
RL
RW
8
C
O
U
N
T
E
R
D
E
C
O
D
E
IF WCR = 00[H] THEN RW = RL
IF WCR = FF[H] THEN RW = RH
WIPER
(WCR)
One of Two Potentiometers
(DR0)
(DR1)
(DR2)
(DR3)
X9269
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X9269UV24-2.7 功能描述:IC XDCP DUAL 256TAP 50K 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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X9269UV24I-2.7 功能描述:IC XDCP DUAL 256TAP 50K 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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