PT4306-S

PT4306 Compact 433.92 MHz OOK/ASK Receiver DESCRIPTION The PT4306 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 PT4306 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. FEATURES  Normal operating of 4.6 mA at 433.92 MHz  Requires few external components  Achieves sensitivity of –112 dBm (peak ASK signal level)  Supply voltage range: 2.4 to 5.5 V  Supports data rates up to 10 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 The PT4306 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. 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 PT4306 BLOCK DIAGRAM XIN 8 VSS Reference Oscillator PLL 1 I Q CSF (BPF) ANT 2 IRM 7 CTH 6 DO Data Filter (LPF) Buffer Amplifier LNA VREG Limiter RSSI On-Chip Regulator 3 4 5 VDD5 EN EVALUATION BOARD SCHEMATIC U1 C5 C1 L1 VDD5 R1 8 CTH 7 VREGPT4306-S DO 6 VDD5 EN 5 VSS 2 ANT 3 4 C2 L2 XIN 1 PTC C4 VDD5 R2 C3 V1.0 2 July 2016 PT4306 433.92MHZ APPLICATION EXAMPLE U1 13.598 MHz 1.2 pF 100 nF Etched Inductor on PCB 39 nH VDD5 XIN 8 CTH 7 VREGPT4306-S DO 6 VDD5 EN 5 1 VSS 2 ANT 3 4 PTC 470 nF VDD5 5.1 MΩ BILL OF MATERIALS Part Value Unit L1 39 n H Description Antenna input matching, coil inductor L2 56 n H Antenna ESD protection, coil inductor (optional) C1 1.2 p F Antenna input matching C2/C3 100 n F Power supply de-coupling capacitor C4 470 n F C5 220 p F R1 10  CTH, affects coding type and start-up time Dependent upon crystal vendor; for frequency fine-tuning (optional) Power supply de-coupling resistor (optional) R2 5.1M  X1 13.598 MHz U1 PT4306 IC U1 For reducing data output noise (optional) Crystal with CLoad = 220 pF, for reference oscillator Receiver chip Note: 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 3 July 2016 PT4306 ORDER INFORMATION Valid Part Number PT4306-S Package Type 8 Pins, SOP, 150 mil Top Code PT4306-S PIN CONFIGURATION VSS 1 8 XIN ANT 2 7 CTH PT4306-S VREG 3 6 DO VDD5 4 5 EN PIN DESCRIPTION Pin No. Pin Name I/O 1 VSS G Ground 2 ANT I RF input connected to antenna via a matching network 3 VREG P Regulated core voltage 4 VDD5 P 5 V regulator input 5 EN I Chip enable (tie HIGH to enable the chip) 6 DO O Data output 7 CTH I/O Connection for data slicing threshold capacitor 8 XIN I SOP8 V1.0 Description Reference oscillator input 4 July 2016 PT4306 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 16 July 2016