MCP2036 Datasheet, PDF (1/30 Pages) Microchip Technology – Inductive Sensor Analog Front End Device

MCP2036
Inductive Sensor Analog Front End Device
Features:
• Complete Inductance Measurement System:
- Low-Impedance Current Driver
- Sensor/Reference Coil Multiplexer
- High-Frequency Detector
• Operating Voltage: 2.7 to 5.5V
• Low-Power Standby Mode
• Gain and Frequency set by external passive
components
Typical Applications:
• Harsh environment inductive keyboards
• Inductive rotational sensor interface
• Inductive displacement sensor interface
• Inductive force sensor interface
Package Types
MCP2036 14-pin PDIP, SOIC
V_{REF 1}
LREF 2
LBTN 3
V_{DD 4}
DRVOUT 5
DRVIN 6
CLK 7
14 V_DET+
13 ^VDET-
12 V_DETOUT
11 V_SS
10 Reserved
9 CS
8 REFSEL
Description:
The MCP2036 Inductive Sensor Analog Front End
(AFE) combines all the necessary analog functions for
a complete inductance measurement system.
The device includes:
• High-frequency, current-mode coil driver for
exciting the sensor coil.
• Synchronous detector for converting AC sense
voltages into DC levels.
• Output amplifier/filter to improve resolution and
limit noise.
• Virtual ground reference generator for single
supply operation.
The device is available in 14-pin PDIP, SOIC and
16-pin QFN packages:
MCP2036 16-pin QFN
LREF ₁
LBTN 2
V_{DD 3}
DRVOUT 4
12 V_DET-
11 V_DETOUT
10 V_SS
9 Reserved
© 2009 Microchip Technology Inc.
DS22186B-page 1