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