MCP2030A
Three-Channel Analog Front-End Device
with 1 mV
PP
Input Detection Sensitivity
Device Features
•
•
•
•
Three input pins for analog input signals
High input detection sensitivity (1 mV
PP
, typical)
High modulation depth sensitivity (as low as 8%)
Three output selections:
- Demodulated data
- Carrier clock
- RSSI
Input carrier frequency: 125 kHz, typical
Input data rate: 10 Kbps, maximum
Eight internal configuration registers
Bidirectional transponder communication
(LF talk back)
Programmable antenna tuning capacitance
(up to 63 pF, 1 pF/step)
Programmable output-enable filter
Low standby current: 6.5 µA (with three channels
enabled), typical
Low operating current: 19 µA (with three channels
enabled), typical
Serial Peripheral Interface (SPI) with external
devices
Supports Battery Backup mode and batteryless
operation with external circuits
Industrial and Extended Temperature Range:
-40°C to +85°C (industrial)
Description
The MCP2030A 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. These registers,
with the exception of the read-only Status register, are
readable and programmable by an external device.
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 mV
PP
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.
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.
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.
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 Backup and Batteryless modes using a
few external components.
This device is available in 14-pin PDIP, SOIC, and
TSSOP packages.
•
•
•
•
•
•
•
•
•
•
•
Typical Applications
• Automotive industry applications:
- Passive Keyless Entry (PKE) transponder
- Remote door locks and gate openers
- Engine immobilizer
- LF initiator sensor for tire pressure monitoring
systems
• Security Industry applications:
- Long range access control transponder
- Parking lot entry transponder
- Hands-free apartment door access
- Asset control and management
Package Types
MCP2030A
PDIP, SOIC, TSSOP
V
SS
CS
SCLK/ALERT
RSSI
LFDATA/
CCLK/SDIO
V
DD
1
2
3
4
NC 5
6
7
14
13
V
SS
LCCOM
12 NC
LCX
11
10
9
8
LCY
LCZ
V
DD
2011 Microchip Technology Inc.
DS22235B-page 1
MCP2030A
NOTES:
DS22235B-page 2
2011 Microchip Technology Inc.
MCP2030A
1.0
ELECTRICAL SPECIFICATIONS
† Notice:
Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of
the device at those or any other conditions above those
indicated in the operation listings of this specification is
not implied. Exposure to maximum rating conditions for
extended periods may affect device reliability.
Absolute Maximum Ratings
(†)
Ambient temperature under bias...................-40°C to +125°C
Storage temperature .................................... -65°C to +150°C
Voltage on V
DD
with respect to V
SS
............... -0.3V to +6.5V
Voltage on all other pins with
respect to V
SS
...................................... -0.3V to (V
DD
+ 0.3V)
Maximum current out of V
SS
pin .................................300 mA
Maximum current into V
DD
pin ....................................250 mA
Maximum LC Input Voltage
(LCX, LCY, LCZ) loaded, with device........................ 10.0 V
PP
Maximum LC Input Voltage
(LCX, LCY, LCZ) unloaded, without device............. 700.0 V
PP
Maximum Input Current (rms) into device
per LC Channel.............................................................10 mA
Human Body ESD rating ....................................2000 (min.) V
Machine Model ESD rating ..................................200 (min.) V
DC ELECTRICAL CHARACTERISTICS
Electrical Specifications:
Operating temperature
LC Signal Input
Carrier Frequency
LCCOM connected to V
SS
Parameters
Supply Voltage
V
DD
Start Voltage to ensure internal
Power-on Reset (POR) signal
Modulation Transistor-on Resistance
Active Current (detecting signal)
1 LC Input Channel Receiving Signal
3 LC Input Channel Receiving Signals
Standby Current (wait to detect signal) I
STDBY
1 LC Input Channel Enabled
2 LC Input Channels Enabled
3 LC Input Channels Enabled
Sleep Current
Analog Input Leakage Current
LCX, LCY, LCZ
LCCOM
Digital Input Low Voltage
Digital Input High Voltage
Digital Input Leakage Current
(3)
SDI
SCLK, CS
Note 1:
2:
3:
V
IL
V
IH
I
IL
—
—
—
—
1
1
µA
µA
I
SLEEP
I
AIL
—
—
V
SS
0.8 V
DD
—
—
—
—
±1
±1
0.3 V
DD
V
DD
µA
µA
V
V
V
DD
= 3.6V, V
SS
V
IN
1V with respect
to ground. Internal tuning capacitors are
switched off, tested in Sleep mode.
SCLK, SDI, CS
SCLK, SDI, CS
V
DD
= 3.6V
V
SS
V
PIN
V
DD
V
PIN
V
DD
—
—
—
—
2
5
6.5
0.2
5
8
10.5
1
µA
µA
µA
µA
CS = V
DD
; ALERT = V
DD
Standard Operating Conditions (unless otherwise stated)
-40C
T
A
+85C
Sinusoidal 300 mV
PP
125 kHz
Sym
V
DD
V
POR
R
M
I
ACT
—
—
10
19
—
25
µA
µA
Min
2.0
—
—
Typ
(2)
3.0
—
50
Max
3.6
1.8
100
Units
V
V
W
V
DD
= 3.0V
CS = V
DD
Input = Continuous Wave (CW);
Amplitude = 300 mV
PP
.
All channels enabled.
CS = V
DD
; ALERT = V
DD
Conditions
These parameters are characterized but not tested.
Data in “Typ” column is at 3.0V, +25C unless otherwise stated. These parameters are for design guidance only and are
not tested.
Negative current is defined as current sourced by the pin.
2011 Microchip Technology Inc.
DS22235B-page 3
MCP2030A
DC ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Specifications:
Operating temperature
LC Signal Input
Carrier Frequency
LCCOM connected to V
SS
Parameters
Digital Output Low Voltage
ALERT, LFDATA/SDIO
Digital Output High Voltage
ALERT, LFDATA/SDIO
Digital Input Pull-Up Resistor
CS, SCLK
Note 1:
2:
3:
These parameters are characterized but not tested.
Data in “Typ” column is at 3.0V, +25C unless otherwise stated. These parameters are for design guidance only and are
not tested.
Negative current is defined as current sourced by the pin.
R
PU
V
OH
V
DD
- 0.5
50
—
200
—
350
V
k
I
OH
= -400 µA, V
DD
= 2.0V
V
DD
= 3.6V
Standard Operating Conditions (unless otherwise stated)
-40C
T
A
+85C
Sinusoidal 300 mV
PP
125 kHz
Sym
Min
Typ
(2)
Max
Units
Conditions
Analog Front-End section
—
—
V
SS
+0.4
V
I
OL
= 1.0 mA, V
DD
= 2.0V
V
OL
DS22235B-page 4
2011 Microchip Technology Inc.
MCP2030A
AC ELECTRICAL CHARACTERISTICS
Electrical Specifications:
Operating temperature
LC Signal Input
Carrier Frequency
LCCOM connected to V
SS
Parameters
Input Sensitivity
Standard Operating Conditions (unless otherwise stated)
-40C
T
A
+85C
Sinusoidal 300 mV
PP
125 kHz
Sym
V
SENSE
—
1
—
mV
PP
Min
Typ
(2)
Max
Units
Conditions
V
DD
= 3.0V
Output-enable filter disabled,
AGCSIG =
0;
MODMIN =
00
(33% modulation depth setting)
Input = Continuous Wave (CW)
Output = Logic level transition
from low-to-high at sensitivity
level for CW input.
Trimmed to 1 mV
PP
input
sensitivity for all channels.
V
DD
= 3.0V, Force I
IN
= 5 µA
(worst-case)
V
DD
= 2.0V, V
IN
= 8 VDC
V
DD
= 3.0V
—
—
0
-30
—
—
dB
dB
No sensitivity reduction selected
Max reduction selected
Monotonic increment in attenua-
tion value from setting =
0000
to
1111
by design
V
DD
= 3.0V
—
—
—
—
F
CARRIER
F
MOD
—
—
60
33
14
8
125
—
84
49
26
—
—
10
%
%
%
%
kHz
kHz
Input data rate with NRZ data for-
mat.
V
DD
= 3.0V
Minimum modulation depth set-
ting= 33%
Input conditions:
Amplitude = 300 mV
PP
Modulation depth = 100%
See
Section 5.21 “Minimum
Modulation Depth Require-
ment for Input Signal”.
See Modulation Depth Definition
in
Figure 5-5.
Coil de-Q-ing Voltage -
RF Limiter (R
FLM
) must be active
RF Limiter Turn-on Resistance
(LCX, LCY, LCZ)
Sensitivity Reduction
V
DE_Q
R
FLM
S
ADJ
3
—
—
300
5
700
V
W
Minimum Modulation Depth
60% setting
33% setting
14% setting
8% setting
Carrier frequency
Input modulation frequency
V
IN_MOD
Note 1:
2:
3:
4:
Parameter is characterized but not tested.
Data in “Typ” column is at 3.0V, +25°C unless otherwise stated. These parameters are for design guidance only and are
not tested.
Required output-enable filter high time must account for input path analog delays (= T
OEH
- T
DR
+ T
DF
).
Required output-enable filter low time must account for input path analog delays (= T
OEL
+ T
DR
- T
DF
).
2011 Microchip Technology Inc.
DS22235B-page 5
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