ATA5757

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
•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 MSOP10


Pinout




Specifications

Parameters	Symbol	Min.	Max.	Unit
Junction temperature	VS		5	V
Power dissipation	Ptot		100	mW
Junction temperature	Tj		150
Storage temperature	Tstg	-55	125	°C
Ambient temperature	Tamb1	-55	125	°C
Ambient temperature in power-down mode for 15 minutes without damage with VS 3.2 V VENABLE < 0.25 V or ENABLE is open, VASK < 0.25 V, VFSK < 0.25 V	Tamb2		175	°C
Input voltage	VmaxASK	-0.3	(VS + 0.3)(1)	V

Description

The ATA5756/ATA5757 is a PLL transmitter IC which has been developed for the demands of RF low-cost trans-mission systems at data rates up to 20 kBaud Manches-ter 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 settling time it is well suited for Tire Pressure Monitoring (TPM) and for Passive Entry Go applications.