PT4303

Low Power Super-heterodyne

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

PT4303

is

a

low

power

superheterodyne

OOK/ASK receiver for the 315/433.92 MHz frequency

bands. It offers a high level of integration and requires

only few external components. The PT4303 consists of

a low-noise amplifier (LNA), a down-conversion mixer,

an on-chip phase-locked loop (PLL) with integrated

voltage-controlled oscillator (VCO) and loop filter, an

OOK/ASK demodulator, a data filter, a data slicing

comparator and an on-chip regulator.

The PT4303

also implements a discrete one-step automatic gain

control (AGC) to extend the dynamic range of the

received RF signal.

The PT4303 is available in a 14-pin SOP package and

is specified over the extended temperature range (

–40

to +85°C).

FEATURES

 Ultra-low power consumption: 2.7 mA for full

operation (315 MHz)

 Few external components

 Excellent sensitivity on the order of –110 dBm

(peak ASK signal level at 315 MHz)

 2.4 V to 5.5 V supply voltage range

 250 MHz to 500 MHz frequency range

 Data rate up to 10 Kb/s

APPLICATIONS

 Automotive remote keyless entry (RKE)

 Remote control

 Garage door and gate openers

 Suitable for applications that meet either the

European ETSI-300-220 or the North American

FCC (Part 15) regulatory standards

BLOCK DIAGRAM

LNA

Buffer

Amplifier

OOK/ASK

Demodulator

Data Filter

(LPF)

PLL

Reference

Oscillator

On-Chip

Regulator

VDD5

Comparator

1

2

3

4

5

6

7

IFIN

MIXOUT

VBB

VRF

ANT

VSSRF

VSSLO

Mixer

14

13

12

11

10

9

8

REFOSC

CTH

DO

CE

VSSBB

VLO

AGC