PT4307

Compact 315 MHz OOK/ASK Receiver

Tel: 886-2-66296288

‧Fax: 886-2-29174598‧ http://www.princeton.com.tw‧2F, No. 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan

DESCRIPTION

The PT4307 is a compact, fully integrated OOK/ASK

receiver with ±4 KV ESD (HBM) and ±1 KV ESD (CDM)

protections for 433.92 MHz frequency band, and just

requires few external components. The PT4307 consists of

a low-noise amplifier (LNA), image-rejection mixer (IRM),

built-in channel-select filter (CSF), OOK/ASK demodulator,

data filter, and data slicing comparator. The local oscillator

(LO) sub-system incorporates a monolithic VCO, ÷32

feedback divider, loop filter and fast start-up reference

oscillator to form a complete phase-locked loop-based

frequency synthesizer for single channel applications.

The PT4307 is available in an 8-pin SOP package and is

specified over the temperature range from

–40 to +85 °C.

APPLICATIONS

 Automotive Remote Keyless Entry (RKE)

 Remote control

 Garage door and gate openers

 Suitable for applications that must adhere to either the

European ETSI-300-220 or the North American FCC

(Part 15) regulatory standard.

FEATURES

 Normal operating of 4.3 mA at 315 MHz

 Requires few external components

 Achieves sensitivity of –114 dBm (peak ASK

signal level)

 Supply voltage range: 2.4 to 5.5 V

 Supports data rates up to 7.2 Kb/s

 Wide input dynamic range with automatic gain

control handling

 Image-rejection ratio of 25 dB

 ESD protection levels up to ±4 KV HBM, ±400 V

MM and ±1 KV CDM

BLOCK DIAGRAM

LNA

Buffer

Amplifier

Limiter

RSSI

Data Filter

(LPF)

PLL

Reference

Oscillator

DO

XIN

ANT

VDD5

VSS

On-Chip

Regulator

VREG

CTH

CSF

(BPF)

I

Q

IRM

1

2

7

6

3

4

5

EN

8