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MCP41050-ESN 数据表(PDF) 1 Page - Microchip Technology |
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MCP41050-ESN 数据表(HTML) 1 Page - Microchip Technology |
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1 / 32 page  2003 Microchip Technology Inc. DS11195C-page 1 M MCP41XXX/42XXX Features • 256 taps for each potentiometer • Potentiometer values for 10 k Ω, 50 kΩ and 100 k Ω • 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 Block Diagram Description The MCP41XXX and MCP42XXX devices are 256- position, digital potentiometers available in 10 k Ω, 50 k Ω 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. Package Types 16-Bit Shift V DD V SS SI SCK RS SHDN PB1 PA1 PW1 Resistor Array 1* Wiper Register PB0 PW0 PA0 Resistor Array 0 Wiper Register Register S0 Control Logic CS *Potentiometer P1 is only available on the dual MCP42XXX version. 1 2 3 4 11 12 13 14 8 9 10 5 6 7 PDIP/SOIC/TSSOP PB1 PA1 PW1 SHDN SO RS PW0 PB0 CS PA0 SCK SI V SS V DD 1 2 3 4 5 6 7 8 PDIP/SOIC PB0 PA0 V DD PW0 V SS CS SCK SI Single/Dual Digital Potentiometer with SPI™ Interface |
类似零件编号 - MCP41050-ESN |
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类似说明 - MCP41050-ESN |
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