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T5753 Datasheet

  • T5753

  • UHF ASK/FSK TRANSMITTER

  • 13頁

  • ATMEL   ATMEL

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Features
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Integrated PLL Loop Filter
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ESD Protection (4 kV HBM/ 200 V MM; Except Pin 2: 4 kV HBM/ 100 V MM)
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also at ANT1/ANT2
High Output Power (8.0 dBm) with Low Supply Current (9.0 mA)
Modulation Scheme ASK/FSK
鈥?FSK Modulation is Achieved by Connecting an Additional Capacitor Between the
XTAL Load Capacitor and the Open Drain Output of the Modulating Microcontroller
Easy to Design-in Due to Excellent Isolation of the PLL from the PA and Power Supply
Single Li-cell for Power Supply
Supply Voltage 2.0 V to 4.0 V in the Temperature Range of -40擄 C to 85擄 C/125擄 C
Package TSSOP8L
Single-ended Antenna Output with High Efficient Power Amplifier
CLK Output for Clocking the Microcontroller
One-chip Solution with Minimum External Circuitry
125擄 C Operation for Tire Pressure Systems
UHF ASK/FSK
Transmitter
T5753
Description
The T5753 is a PLL transmitter IC which has been developed for the demands of RF
low-cost transmission systems at data rates up to 32 kBaud. The transmitting
frequency range is 310 MHz to 330 MHz. It can be used in both FSK and ASK
systems.
Figure 1.
System Block Diagram
UHF ASK/FSK
Remote control transmitter
UHF ASK/FSK
Remote control receiver
1 Li cell
T5753
Encoder
ATARx9x
XTO
PLL
Antenna Antenna
VCO
U3741B/
U3745B/
T5743/
T5744
Demod.
1...3
Control
Keys
IF Amp
PLL
XTO
Power
amp.
LNA
VCO
Micro-
controller
Rev. 4510F鈥揜KE鈥?7/04

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