参数资料
型号: MCP42XXEV
厂商: Microchip Technology
文件页数: 13/42页
文件大小: 0K
描述: BOARD EVALUATION MCP42XX
标准包装: 1
系列: PICkit™
主要目的: 数字电位器
嵌入式:
已用 IC / 零件: MCP4231,MCP4241,MCP4251,MCP4261
已供物品: 1 块组装板,1 块裸板,说明文档
Installation and Operation
2.3
2.4
GETTING STARTED
The MCP42XXEV Evaluation Board allows quick evaluation of the MCP4261-103E/ST
device. The understanding of the device characteristics (such as the resistor network)
is applicable to any of the devices in the MCP42XX family. The MCP4261-103 device
has a typically R AB resistance of 10 k ? . Evaluation can be done by:
? Using the PICkit Serial Analyzer for interface communication
? Jumpering the MCP42XXEV Evaluation Board into your application circuit to
control the MCP4261-103 device
This user guide will discuss the steps needed to evaluate the MCP4261-103E/ST
device using the PICkit Serial Analyzer (order number: DV164122).
ure the PICkit Serial Analyzer as well as create User Script files which are used to
communicate with the MCP4261, based on the device’s SPI communication protocol
format.
MCP42XXEV EVALUATION BOARD DESCRIPTION
The MCP42XXEV Evaluation Board uses the flexible TSSOP20EV Evaluation Board
PCB. This simple evaluation board allows the system designer to quickly evaluate the
operation of the MCP4261-103 device (R AB(TYP) = 10 k ? ) using the PICkit Serial Ana-
lyzer or by jumpering the board into their application system. The PICkit Serial Analyzer
is available separately (order number: DV164122).
2.4.1
The Hardware
Figure 2-2 shows the component layout of the MCP42XXEV Evaluation Board. This is
a small four-layer board (3.9" x 2.1" (99.06 mm x 53.34 mm)). There are twenty-two
connection points/pads that can use either through-hole or surface-mount connector
posts.
The pad labeled V DD is connected to the PCB power plane, while the pad labeled V SS
is connected to the PCB ground plane. All the passive components that are connected
to V DD or V SS are connected to either the power plane or ground plane.
The twenty remaining PCB pads correspond to the device pins (i.e., pad 1 connects to
pin 1).
Each pad has two passive components associated with them: a pull-up resistor and a
pull-down resistor. The pull-up resistor is always RXU and the pull-down resistor is
RXD. The “X” is a numeric value that corresponds to a particular pad (1 to 8). As an
example, Pad 5’s pull-up resistor is R5U. Capacitor C1 and C2 are the power supply
filtering capacitors. For whichever pin is the device’s V DD , the RxD component footprint
can be used for the device’s bypass capacitor. Table 2-2 describes the components.
A 6-pin header interface is available to support the PICkit serial or the PIC ? MCU
In-Circuit Serial Programming? (ICSP?) interface.
The MCP4261 is bottom aligned in the U3 footprint so that the interface signals are on
the same U3 package pins as the MCP4361 device. This is done to show the footprint
compatibility between the MCP42X1 and MCP43X1 devices.
? 2010 Microchip Technology Inc.
DS51898A-page 13
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MCP4331-103E/ML 功能描述:数字电位计 IC 10k SPI 7-bit Quad Chl, QFN20 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
MCP4331-103E/ST 功能描述:数字电位计 IC 10k SPI 7-bit Quad Chl, TSSOP20 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
MCP4331-104E/ML 功能描述:数字电位计 IC 100k SPI 7-bit Quad Channel 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
MCP4331-104E/ST 功能描述:数字电位计 IC 100k SPI 7-bit Quad Channel 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