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參數(shù)資料
| 型號： | TR5100 |
| 英文描述： | Walkie-Talkie. hand Free |
| 中文描述： | 對講機(jī)。手免費(fèi) |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 113K |
| 代理商： | TR5100 |
Page 1
June 2001
TR5100 FM Transceiver IC
HiMARK Technology, Inc. reserves the right to change the product described in this datasheet. All information con-
tained in this datasheet is subject to change without prior notice. HiMARK Technology, Inc. assumes no responsibility
for the use of any circuits shown in this datasheet.
Description
The TR5100 is a low power FM transceiver IC consisting of a receiver and a transmitter on a
single chip. The receiver down converts an RF FM signal through an off-chip filter to IF fre-
quency and then performs quadrature demodulation. IF filtering is performed by an off-chip
filter. A speaker amplifier provides the capability of driving an off-chip class AB output stage
which feeds audio signal to an external speaker. In addition, it allows the user to adjust
speaker gain through a feedback function. A MUTE output is provided such that an RSSI cur-
rent may be externally low-passed to provide a mute/disable function to the receiver audio in
case of a weak received signal.
Receiving an audio input from a microphone, the transmitter amplifies and performs FM mod-
ulation onto a Colpitts oscillator output by way of a variable reactance circuit. The frequency
of the signal is then up converted by an on-chip trippler to three times high as the RF output.
The output is then sent to an antenna through an off-chip filter. A build-in feedback function
in the microphone amplifier allows adjustment of its gain. In addition, an oscillation function
is featured to enable paging of its transceiver mate by way of an external switch.
The frequency range of the TR5100 radio frequencies is from 15MHz to 150MH. It may by
supported by simply choosing the appropriate external components. The transmitter and
receiver oscillators require 2 crystals to clamp the TX and RX frequencies.
Features
Fully integrated transceiver
TX and RX operate in full duplex (FDD)
Automotive temperature range
TQFP 32L package (7mm x 7mm)
Applications
One/Two Way Walkie Talkie
Hands-free
Elder/Baby Monitor
the wireless IC company
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