Automotive ICs
TH71101
315/433MHz Receiver
The TH71101 FSK/FM/ASK single-conversion super-
heterodyne receiver IC is designed for applications in the
European 433 MHz industrial-scientific-medical (ISM)
band, according to the EN 300 220 telecommunications
standard. It can also be used for any other system with
carrier frequencies ranging from 300 MHz to 450 MHz
(e.g. for applications according to FCC part 15 and ARIB
STD-T67).
Hall ICs
Intelligent Drivers
and Actuators
Features
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Single-conversion superhet architecture for low external component count
FSK for digital data and FM reception for analog signal transmission
FSK/FM demodulation with phase-coincidence demodulator
Low current consumption in active mode and very low standby current
Switchable LNA gain for improved dynamic range
RSSI allows signal strength indication and ASK detection
32-pin Low profile Quad Flat Package (LQFP32)
RF&RFID
Silicon MEMS
Technical Data Overview
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Input frequency range: 300 MHz to 450 MHz
Power supply range: 2.3 V to 5.5 V @ ASK
Temperature range: -40 °C to +85 °C
Standby current: 50 nA
Operating current: 6.5 mA at low gain mode
8.2 mA at high gain mode
Sensitivity: -113 dBm @ ASK, 180 kHz IF filter BW
-107 dBm @ FSK, 180 kHz IF filter BW
Range of IF: 400 kHz to 22 MHz
Maximum data rate: 260 kbps NRZ @ ASK
180 kbps NRZ @ FSK
Image rejection: > 45 dB (e.g. with SAW front-end filter and at 10.7 MHz IF)
Maximum input level: -10 dBm at ASK
0 dBm at FSK
Spurious emission: < -70 dB
Input frequency acceptance: up to ±100 kHz
RSSI range: 70 dBm
FM/FSK deviation range: ±2.5 kHz to ±80 kHz
Maximum analog modulation frequency: 15 kHz
CMOS Imaging
Bus ICs
IR Temperature
Block Diagram
Automotive ICs
IN_MIX1
OUT_MIX2
VEE_MIX
FBC1
IF1N
VCC_MIX
VEE_LNAC
GAIN_LNA
OUT_LNA
OUT_IFA
IN_DEM
FBC2
RSSI
VCC_IF
VEE_IF
IF1P
IN_IFA
1
2
3
4
5
6
7
8
9
10
11
12
13
21
14
15
16
DEMOD
MIX1
LNA
LO1
IF
IN_LNA
31
MIX2
IF
IFA
MIX3
OUTP
OUTN
23
24
PLL SYNTH
OAP
OA
20
OAN
19
Hall ICs
DIV_16
PFD
RO
CP
VCC_PLL
VEE_RO
OUT_OA
BIAS
VCC_BIAS
VEE_BIAS
18
VCO1
VCC_LNA
VEE_LNA
32
30
29
LF
26
RO
25
27
28
ENRX
22
17
Intelligent Drivers
and Actuators
Applications
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General digital and analog data receiving
Tire Pressure Monitoring Systems (TPMS)
Remote Keyless Entry (RKE)
Wireless access control
Low-power telemetry systems
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Home and building automation
Alarm and security systems
Garage door openers
Remote controls
RF&RFID
Silicon MEMS
Evaluation Board
R5
C15
C16
C17
R4
FSK output
VCC
RSSI 21
OUTP 23
OAN 19
24
OAP 20
OUT_OA 18
VCC 17
VEE 22
CERDIS
16
XTAL
25 VEE
CMOS Imaging
C1
26 RO
27 VCC
28 ENRX
OUT_IFA 15
VCC 14
C12
VCC
ENRX
R1
C3
29 LF
30 VEE
TH71101
GAIN_LNA
OUT_LNA
IN_MIX1
FBC2 13
FBC1 12
IN_IFA 11
VEE 10
OUT_MIX2
9
VCC
C11
C9
C10
31 IN_LNA
IF1N
RF input
50Ω
L1
1
3
6
4
L2
1
2
3
4
5
6
7
SAWFIL
Bus ICs
C7
RL1
L3
C6
RL2
FSK Application Circuit
Disclaimer:
VCC
IF1P
VEE
VEE
VCC
32 VCC
CERFIL
8
CB
VCC
IR Temperature
Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by
description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Melexis reserves the right to change specifications and
prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with Melexis for current information. This product is intended for use
in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-
support or life-sustaining equipment are specifically not recommended without additional processing by Melexis for each application. The information furnished by Melexis is believed to be
correct and accurate. However, Melexis shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss
of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical
data herein. No obligation or liability to recipient or any third party shall arise or flow out of Melexis’ rendering of technical or other services.
© 2006 Melexis NV. All rights reserved.
For additional information go to our website at:
Feb 2007
Email Europe and rest of the world:
sales_europe@melexis.com
Email USA :
sales_usa@melexis.com
Email Asia:
sales_asia@melexis.com
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