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TRF1400 Datasheet

  • TRF1400

  • RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVE...

  • 19頁

  • TI

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TRF1400
RF TELEMETRY RECEIVERS
VHF/UHF RZ ASK REMOTE CONTROL RECEIVER
SLWS014E 鈥?JUNE 1996 鈥?REVISED APRIL 1998
D
D
D
D
D
D
Wide VHF/UHF Frequency Range
200 MHz to 450 MHz for World-Wide
Remote Control Frequency Compatibility
High Receiver Sensitivity . . . 鈥?03 dBm at
315 MHz
Accepts Baseband Data Rates From 500 Hz
to 10 kHz
Manchester-Decoded and Raw Baseband
Outputs for Easy Interface to Serial Data
Decoders and Microcontrollers
TRF (Tuned Radio Frequency) Design
Eliminates Local Oscillator (No Emissions)
and Reduces Many Government Type
Approvals (Including FCC)
Adjustable Internal Sampling Clock Set By
External Components
D
D
D
D
Internal Amplifier and Comparator for
Amplification and Shaping of Low-Level
Input Signals With Average-Detecting
Autobias Adaptive Threshold Circuitry for
Improved Sensitivity
Minimum External Component Count and
Surface-Mount Packaging for Extremely
Small Circuit Footprint 鈥?Typically Replaces
More Than 40 Components in an Equivalent
Discrete Solution
No Manual Alignment When Using SAW
Filters
Advanced Submicron BiCMOS Process
Technology for Minimum Power
Consumption
description
The TRF1400 VHF/UHF RZ ASK remote control
receiver is specifically designed for RZ ASK
(return-to-zero amplitude-shift keyed) commu-
nications systems operating in the 200-MHz to
450-MHz band. This device is targeted for use in
automotive and home security systems, garage
door openers, remote utility metering, and other
low-power remote control and telemetry systems.
A complete RZ ASK receiver solution on a chip,
the TRF1400 requires only a minimum of external
components for operation. This significantly
reduces the complexity and footprint of new
designs compared with current discrete receiver
designs. The TRF1400 requires no manual
alignment when using external SAW (surface
acoustic wave) filters. For a lower-cost solution,
the device is also compatible with external LC
components.
DW PACKAGE
(TOP VIEW)
LPF
AGND
RFIN3
AVCC
AGND
AVCC
AGND
OFFSET
AGND
OSCR
OSCC
DVCC
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
RFOUT2
LNA2T
RFIN2
AGND
RFOUT1
LNA1T
RFIN1
AGND
DOUT
TRIG
BBOUT
DGND
The TRF1400 also includes several on-chip features that normally require additional circuitry in a receiver
system design. These include two low-noise front-end amplifiers, an RF amplifier/comparator for detection and
shaping of input signals, and a demodulated RZ ASK baseband TTL-level output that readily interfaces to
self-synchronizing devices. Also included is on-chip Manchester decoding logic that provides a specially
formatted TTL data output, synchronized with a trigger output, for easy interface to any microcontroller using
Manchester-encoded data.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
漏
1998, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
1

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