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ATA5756-6DQY

更新时间： 2024-02-21 05:28:08

品牌	Logo	应用领域
爱特美尔 - ATMEL		/
页数	文件大小	规格书
20页	327K
描述
UHF ASK/FSK Transmitter

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ATA5756-6DQY 数据手册

Features

• 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

UHF ASK/FSK

Transmitter

• 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)

ATA5756

ATA5757

• Small Package TSSOP10

Benefits

• 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

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. System Block Diagram

UHF ASK/FSK

TPM and Remote control

UHF ASK/FSK

Remote control receiver

transmitter

1 Li cell

ATA5756/

ATA5757

U3741B/

U3745B/

T5743/

Demod.

1...3

Control

µC

Encoder

ATARx9x

T5744/

PLL

IF Amp

Keys

Antenna Antenna

XTO

VCO

PLL

XTO

Power

amp.

LNA

VCO

4702J–RKE–09/08

12 3 4 5 6 7...20

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