- 您现在的位置：买卖IC网 > Sheet目录412 > EVB71101B-433-FSK-C (Melexis Technologies NV)EVALUATION BOARD TH71101 RECEIVR
EVB71101
315/433MHz Receiver
Evaluation Board Description
1
1.1
Theory of Operation
General
With the TH71101 receiver chip, various circuit configurations can be arranged in order to meet a number of
different customer requirements. For FSK reception the IF tank used in the phase coincidence demodulator
can be constituted by an external ceramic discriminator. In ASK configuration, the RSSI signal is fed to an
ASK detector, which is constituted by the operational amplifier.
A double-conversion variant, called TH71102, is also available. This receiver IC allows a higher degree of
image rejection, achieved in conjunction with an RF front-end filter. Both RXICs have the same die. At the
TH71102, the second mixer (MIX2) is used to down-convert the first IF (IF1) to the second IF (IF2). At the
TH71101, MIX2 operates as an amplifier.
Efficient RF front-end filtering is realized by using a SAW, ceramic or helix filter in front of the LNA and by
adding an LC filter at the LNA output.
The TH71101 receiver IC consists of the following building blocks:
PLL synthesizer (PLL SYNTH) for generation of the local oscillator signal LO parts of the PLL SYNTH
are: the high-frequency VCO1, the feedback divider DIV_16, a phase-frequency detector (PFD) with
charge pump (CP) and a crystal-based reference oscillator (RO)
Low-noise amplifier (LNA) for high-sensitivity RF signal reception
First mixer (MIX1) for down-conversion of the RF signal to the IF
IF pre amplifier which is a mixer cell (MIX2) that operates as an amplifier
IF amplifier (IFA) to amplify and limit the IF signal and for RSSI generation
Phase coincidence demodulator (DEMOD) with third mixer (MIX3) to demodulate the IF signal
Operational amplifier (OA) for data slicing, filtering and ASK detection
Bias circuitry for bandgap biasing and circuit shutdown
1.2
EVB Technical Data Overview
Input frequency range: 300 MHz to 450 MHz
Power supply range: 2.3 V to 5.5 V @ ASK
2.7 V to 5.5 V @ FSK
Temperature range: -40 °C to +85 °C
Standby current: 50 nA
Operating current: 6.5 mA @ low gain mode
8.2 mA @ high gain mode
Sensitivity: -110 dBm @ ASK 1)
Maximum input level: -10 dBm @ ASK
0 dBm @ FSK
Image rejection: > 45 dB (e.g. with 433.92 MHz
SAW front-end filter and at 10.7 MHz IF)
Spurious emission: < -70 dBm
Input frequency acceptance range: up to ± 100 kHz
RSSI range: 70 dB
FSK deviation range: ± 2.5 kHz to ± 80 kHz
-104 dBm @ FSK 2)
Range of IF: 400 kHz to 22 MHz
1) at 4 kbps NRZ, BER = 3 ? 10 -3 , 180 kHz IF filter BW, incl. 3 dB SAW front-end-filter loss
2) at 4 kbps NRZ, BER = 3 ? 10 -3 , ± 20 kHz FSK deviation, 180 kHz IF filter BW, incl. 3 dB SAW front-end-
filter loss
For more detailed information, please refer to the latest TH71101 data sheet revision
39012 71101 01
Rev. 012
Page 3 of 14
EVB Description
April/08
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
EVB71102B-315-FSK-C
EVALUATION BOARD TH71102 RECEIVR
EVB71111B-915-FSK-C
EVALUATION BOARD TH71111 RECEIVR
EVB71112B-915-FSK-C
EVALUATION BOARD TH71112 RECEIVR
EVB7122-433-FSK-C
BOARD EVAL FOR TH7122 433MHZ
EVB90121
BOARD EVAL FOR MLX90121
EWG803
LAMP INCAND T1.5 GLASS WEDGE 28V
EY3A-3051-A
SENSOR 3BEAMS 50MM (AMP)
EZ-4000-0357
BOARD EZCONNECT W/CONN BL-4000
相关代理商/技术参数
EVB71102
制造商:未知厂家 制造商全称:未知厂家 功能描述:EVB71102 EValuation Board for TH71102 Receiver
EVB71102-315-ASK-A
制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:315/433MHz Receiver Evaluation Board Description
EVB71102-315-ASK-C
制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:315/433MHz Receiver Evaluation Board Description
EVB71102-315-FM-A
制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:315/433MHz Receiver Evaluation Board Description
EVB71102-315-FM-C
制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:315/433MHz Receiver Evaluation Board Description
EVB71102-315-FSK-A
制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:315/433MHz Receiver Evaluation Board Description
EVB71102-315-FSK-C
制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:315/433MHz Receiver Evaluation Board Description
EVB71102-433-ASK-A
制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:315/433MHz Receiver Evaluation Board Description