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MCP42100-I/SL 参数 Datasheet PDF下载

MCP42100-I/SL图片预览
型号: MCP42100-I/SL
PDF下载: 下载PDF文件 查看货源
内容描述: 单/双通道数字电位SPI⑩接口 [Single/Dual Digital Potentiometer with SPI⑩ Interface]
分类和应用: 转换器数字电位计电阻器光电二极管PC
文件页数/大小: 33 页 / 682 K
品牌: MICROCHIP [ MICROCHIP TECHNOLOGY ]
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M
Features
• 256 taps for each potentiometer
• Potentiometer values for 10 kΩ, 50 kΩ and
100 kΩ
• Single and dual versions
• SPI™ serial interface (mode 0,0 and 1,1)
• ±1 LSB max INL & DNL
• Low power CMOS technology
• 1 µA maximum supply current in static operation
• Multiple devices can be daisy-chained together
(MCP42XXX only)
• Shutdown feature open circuits of all resistors for
maximum power savings
• Hardware shutdown pin available on MCP42XXX
only
• Single supply operation (2.7V - 5.5V)
• Industrial temperature range: -40°C to +85°C
• Extended temperature range: -40°C to +125°C
MCP41XXX/42XXX
Description
The MCP41XXX and MCP42XXX devices are 256-
position, digital potentiometers available in 10 kΩ,
50 kΩ and 100 kΩ resistance versions. The
MCP41XXX is a single-channel device and is offered in
an 8-pin PDIP or SOIC package. The MCP42XXX con-
tains two independent channels in a 14-pin PDIP, SOIC
or TSSOP package. The wiper position of the
MCP41XXX/42XXX varies linearly and is controlled via
an industry-standard SPI interface. The devices con-
sume <1 µA during static operation. A software shut-
down feature is provided that disconnects the “A”
terminal from the resistor stack and simultaneously con-
nects the wiper to the “B” terminal. In addition, the dual
MCP42XXX has a SHDN pin that performs the same
function in hardware. During shutdown mode, the con-
tents of the wiper register can be changed and the
potentiometer returns from shutdown to the new value.
The wiper is reset to the mid-scale position (80h) upon
power-up. The RS (reset) pin implements a hardware
reset and also returns the wiper to mid-scale. The
MCP42XXX SPI interface includes both the SI and SO
pins, allowing daisy-chaining of multiple devices. Chan-
nel-to-channel resistance matching on the MCP42XXX
varies by less than 1%. These devices operate from a
single 2.7 - 5.5V supply and are specified over the
extended and industrial temperature ranges.
Single/Dual Digital Potentiometer with SPI
Interface
Block Diagram
RS
V
DD
V
SS
Control
Logic
Wiper
Register
SHDN
PB0
Resistor
Array 0
PA0
PW0
PB1
PA1
PW1
Package Types
PDIP/SOIC
CS
SCK
SI
V
SS
1
2
3
4
8
7
6
5
V
DD
PB0
PW0
PA0
MCP41XXX
CS
SI
SCK
16-Bit
Shift
Register
S0
Wiper Resistor
Register Array 1*
*Potentiometer
P1 is only available on the dual
MCP42XXX version.
PDIP/SOIC/TSSOP
CS
SCK
SI
V
SS
PB1
PW1
PA1
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
DD
SO
SHDN
RS
PB0
PW0
PA0
MCP42XXX
2003 Microchip Technology Inc.
DS11195C-page 1