ATA5757-6DQY ATMEL Corporation, ATA5757-6DQY Datasheet

ATA5757-6DQY

Manufacturer Part Number

ATA5757-6DQY

Description

Manufacturer

ATMEL Corporation

Datasheets

1.ATA5757-6DQY.pdf (20 pages)

2.ATA5757-6DQY.pdf (20 pages)

Specifications of ATA5757-6DQY

Date_code

12+

Packing_info

TSSOP10

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Features

•

Benefits

•

1. Description

The ATA5756/ATA5757 is a PLL transmitter IC which has been developed for the

demands of RF low-cost transmission systems at data rates up to 20 kBaud Man-

chester coding and 40 kBaud NRZ coding. The transmitting frequency range is

313 MHz to 317 MHz (ATA5756) and 432 MHz to 448 MHz (ATA5757), respectively.

It can be used in both FSK and ASK systems. Due to its shorten crystal oscillator set-

tling time it is well suited for Tire Pressure Monitoring (TPM) and for Passive Entry Go

applications.

Figure 1-1.

Keys

1 Li cell

PLL Transmitter IC with Single-ended Output

High Output Power (6 dBm) at 8.1 mA (315 MHz) and 8.5 mA (433 MHz) Typical Values

Divide by 24 (ATA5756) and 32 (ATA5757) Blocks for 13 MHz Crystal Frequencies and

for Low XTO Start-up Times

Modulation Scheme ASK/FSK with Internal FSK Switch

Up to 20 kBaud Manchester Coding, Up to 40 kBaud NRZ Coding

Power-down Idle and Power-up Modes to Adjust Corresponding Current Consumption

through ASK/FSK/Enable Input Pins

ENABLE Input for Parallel Usage of Controlling Pins in a 3-wire Bus System

CLK Output Switches ON if the Crystal Current Amplitude has Reached 35% to 80% of

its Final Value

Crystal Oscillator Time Until CLK Output is Activated, Typically 0.6 ms

Supply Voltage 2.0 V to 3.6 V in Operation Temperature Range of -40°C to +125°C

ESD Protection at all Pins (4 kV HBM)

Small Package TSSOP10

Low Parasitic FSK Switch Integrated

Very Short and Reproducible Time to Transmit Typically < 0.85 ms

13.125 MHz/13.56 MHz Crystals Give Opportunity for Small Package Sizes

ATARx9x

Encoder

System Block Diagram

TPM and Remote control

ATA5756/

ATA5757

XTO

UHF ASK/FSK

transmitter

Power

PLL

VCO

amp.

Antenna Antenna

U3741B/

U3745B/

T5743/

T5744/

LNA

Remote control receiver

Demod.

IF Amp

UHF ASK/FSK

VCO

PLL

Control

XTO

1...3

µC

UHF ASK/FSK

Transmitter

ATA5756

ATA5757

4702J–RKE–09/08

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