MCP2030-I/SL Microchip

MCP2030 Three-Channel Analog Front-End Device Device Features: Description: Three input pins for analog input signals The MCP2030 is a stand-alone Analog Front-End (AFE) device for Low-Frequency (LF) sensing and bidi- High input detection sensitivity (3 mV , typical) PP rectional communication applications. The device has High modulation depth sensitivity (as low as 8%) eight internal Configuration registers which are Three output selections: readable and programmable, except the read-only - Demodulated data STATUS register, by an external device. - Carrier clock The device has three low-frequency input channels. - RSSI Each input channel can be individually enabled or dis- Input carrier frequency: 125 kHz, typical abled. The device can detect an input signal with ampli- tude as low as ~1 mV and can demodulate an Input data rate: 10 Kbps, maximum PP amplitude-modulated input signal with as low as 8% 8 internal Configuration registers modulation depth. The device can also transmit data by Bidirectional transponder communication clamping and unclamping the input LC antenna (LF talk back) voltage. Programmable antenna tuning capacitance The device can output demodulated data, carrier clock (up to 63 pF, 1 pF/step) or RSSI current depending on the register setting. The Programmable output enable filter demodulated data and carrier clock outputs are avail- Low standby current: 4 A (with 3 channels able on the LFDATA pin, while the RSSI output is avail- enabled), typical able on the RSSI pin. The RSSI current output is Low operating current: 13 A (with 3 channels linearly proportional to the input signal strength. enabled), typical The device has programmable internal tuning capaci- Serial Peripheral Interface (SPI) with external tors for each input channel. The user can program devices these capacitors up to 63 pF, 1 pF per step. These Supports Battery Back-Up mode and batteryless internal tuning capacitors can be used effectively for operation with external circuits fine-tuning of the external LC resonant circuit. Industrial and Extended Temperature Range: The device is optimized for very low current consump- -40C to +85C (industrial) tion and has various battery-saving low-power modes (Sleep, Standby, Active). The device can also be oper- Typical Applications: ated in Battery Back-up and Batteryless modes using a few external components. Automotive industry applications: This device is available in 14-pin PDIP, SOIC, and - Passive Keyless Entry (PKE) transponder TSSOP packages. This device is also used as the AFE - Remote door locks and gate openers in the PIC16F639. - Engine immobilizer - LF initiator sensor for tire pressure monitoring Package Types: systems MCP2030 Security Industry applications: PDIP, SOIC, TSSOP - Long range access control transponder - Parking lot entry transponder V V 1 14 SS SS - Hands-free apartment door access CS 2 13 LCCOM - Asset control and management SCLK/ALERT 3 12 NC RSSI 4 11 LCX NC LCY 5 10 LFDATA/ LCZ 6 9 CCLK/SDIO V V DD 7 8 DD 2005-2013 Microchip Technology Inc. DS21981B-page 1MCP2030 NOTES: DS21981B-page 2 2005-2013 Microchip Technology Inc.