PT4307
Compact 315 MHz OOK/ASK Receiver
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.
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
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.
BLOCK DIAGRAM
XIN
8
VSS
1
PLL
Q
Reference
Oscillator
I
CSF
(BPF)
ANT
2
LNA
IRM
Buffer
Amplifier
Limiter
7
CTH
Data Filter
(LPF)
6
RSSI
DO
VREG
3
On-Chip
Regulator
4
VDD5
5
EN
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
PT4307
EVALUATION BOARD SCHEMATIC
U1
X1
C1
C2
L2
1
2
C5
VSS
ANT
XIN
8
7
L1
VDD5
3
VREG
PT4307-S
VDD5
PTC
CTH
DO
EN
C4
6
VDD5
5
R1
4
R2
C3
BILL OF MATERIALS
Part
L1
L2
C1
C2/C3
C4
C5
R1
R2
X1
U1
Value
68 n
82 n
1.5 p
100 n
470 n
220 p
10
5.1 M
9.882
PT4307 IC
Unit
H
H
F
F
F
F
MHz
U1
Description
Antenna input matching, coil inductor
Antenna ESD protection, coil inductor (optional)
Antenna input matching
Power supply de-coupling capacitor
C
TH
, affects coding type and start-up time
Dependent upon crystal oscillator vendor; for
frequency fine-tuning (optional)
Power supply de-coupling resistor (optional)
For reducing data output noise (optional)
Crystal with
C
Load
= 220 pF,
for reference
oscillator
Receiver chip
Notes:
1. L1 and C1 are the components for input matching network. They may need to be adjusted for different PCB layout
and antenna requirements.
2. The value of C4 depends upon the data rate and coding pattern.
3. The
optional
components may be used depending upon specific application requirements, e.g. C5 can
be removed if the crystal oscillator operates at the accurate frequency.
V1.0
2
June 2016
PT4307
IMPORTANT NOTICE
Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and to discontinue any product without notice at any time.
PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No
circuit patent licenses are implied.
Princeton Technology Corp.
2F, 233-1, Baociao Road,
Sindian Dist., New Taipei City 23145, Taiwan
Tel : 886-2-66296288
Fax: 886-2-29174598
http://www.princeton.com.tw
V1.0
15
June 2016
LED专区
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
