th71221 Melexis Company, th71221 Datasheet
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th71221
Manufacturer Part Number
th71221
Description
Transceiver - 27 To 930mhz, Fsk/fm/ask, Multi-channel 32l Qfn 5x5 Quad
Manufacturer
Melexis Company
Datasheet
1.TH71221.pdf
(44 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
th71221ELQ
Manufacturer:
SANDISK
Quantity:
101
Features
Ordering Information
Application Examples
General Description
The TH71221 is a single chip FSK/FM/ASK transceiver IC. It is designed to operate in low-power multi-
channel programmable or single-channel stand-alone, half-duplex data transmission systems. It can be used
for applications in automotive, industrial-scientific-medical (ISM), short range devices (SRD) or similar appli-
cations operating in the frequency range of 300 MHz to 930 MHz. In programmable user mode, the trans-
ceiver can operate down to 27 MHz by employing an external VCO varactor diode.
39010 071221
Rev. 006
Part Number
TH71221.2
Single chip solution with only a few external
components
Stand-alone fixed-frequency user mode
Programmable multi-channel user mode
Low current consumption in active mode and
very low standby current
PLL-stabilized RF VCO (LO) with internal
varactor diode
Lock detect output in programmable
user mode
On-chip AFC for extended input frequency
acceptance range
General bi-directional half duplex digital data
RF signaling or analog signal communication
Tire Pressure Monitoring Systems (TPMS)
Remote Keyless Entry (RKE)
Low-power telemetry systems
Alarm and security systems
Wireless access control
Garage door openers
Remote controls
Networking solutions
Active RFID tags
Home and building automation
Temperature Code
E (-40 °C to 85 °C)
Page 1 of 44
Package Code
LQ (32 L QFN 5x5 Quad)
OUT_DEM
INT2/PDO
OUT_DTA
IN_DEM
VCC_IF
IN_IFA
RSSI
INT1
3wire bus serial control interface
FSK/ASK mode selection
FSK for digital data or FM for analog signal
reception
RSSI output for signal strength indication and
ASK reception
Peak detector for ASK detection
Switchable LNA gain for improved dynamic
range
Automatic PA turn-on after PLL lock
ASK modulation achieved by PA on/off keying
32-pin Quad Flat Lead Package (QFN)
TH71221
top
FSK/FM/ASK Transceiver
Pin Description
LF
VEE_PLL
TNK_LO
VCC_PLL
FS1/LD
VEE_DIG
FS0/SDEN
TH71221
27 to 930MHz
Delivery Form
73 pc/tube
5000 pc/T&R
bottom
Data Sheet
June/08