MCP2030-I/P Microchip Technology, MCP2030-I/P Datasheet - Page 27
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MCP2030-I/P
Manufacturer Part Number
MCP2030-I/P
Description
IC KEYLESS ENTRY AFE 14DIP
Manufacturer
Microchip Technology
Datasheet
1.MCP2030-ISL.pdf
(66 pages)
Specifications of MCP2030-I/P
Rf Type
ISM
Frequency
125kHz
Features
10kbps
Package / Case
14-DIP (0.300", 7.62mm)
Ic Function
Analog Front End Device IC
Supply Voltage Range
2V To 3.6V
Operating Temperature Range
-40°C To +85°C
Digital Ic Case Style
DIP
No. Of Pins
14
Supply Voltage
2V
Leaded Process Compatible
Yes
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCP2030-I/P
Manufacturer:
MICROCHIP
Quantity:
12 000
4.0
The MCP2030 is a stand-alone 3-channel analog
front-end device for low frequency (LF) sensing and
bidirectional transponder applications. By connecting
three orthogonally placed LC resonant antennas to
the LC input pins, it can detect signals from all
directions (x, y and z).
The device draws more current when all channels are
enabled as compared to a single channel; therefore, it
is recommended to disable any unused channels by
setting Configuration Register 0 (Register 5-1).
The device’s high input sensitivity (as low as 1 mV
and ability to detect weakly modulated (as low as 8%)
input signals with its low power feature set, makes the
device suitable for various applications such as a low-
cost
transponder, an LF Initiator sensor for Tire Pressure
Monitoring Systems (TPMS) and long-range access
control applications in the automotive and security
industries.
FIGURE 4-1:
© 2005 Microchip Technology Inc.
V
Legend:
BAT
hands-free
APPLICATION INFORMATION
D
D
BLOCK
C
BLOCK
D
C
R
POOL
D
R
COM
FLAT
COM
LIM
LIM
Passive
= LCCOM charging capacitor.
= Pool capacitor (or battery back-up capacitor), charges in field and powers device.
= Battery protection from reverse charge.
= Field rectifier diodes.
= Voltage limiting diode, may be required to limit V
= LCCOM discharge path.
= Current limiting resistor, required for air coil in strong fields.
External Circuit Example for LF Field Powering and Battery Back-up Mode.
Schottky for low forward bias drop.
D
LIM
Keyless
V
DD
C
POOL
Entry
(PKE)
D
D
FLAT1
FLAT2
PP
)
Air Coil
L
X
4.1
The device supports both battery back-up and
batteryless operation by the addition of external
components, allowing the device to be partially or
completely powered from the field.
Figure 4-1 shows an example of the external circuit for
the battery back-up.
Note:
R
L
C
Y
COM
X
R
LIM
Battery Back-up and Batteryless
Operation
DD
Voltage on LCCOM combined with coil
input voltage must not exceed the maxi-
mum LC input voltage.
C
C
voltage when in strong fields.
COM
Y
L
Z
C
Z
LCCOM
MCP2030
LCX
LCY
LCZ
DS21981A-page 27