PTC PT4305
The PT4305 is a PLL-tuned FSK receiver for short-range wireless data applications in the 315 MHz and 434 MHz frequency bands. The PT4305 offers a high level of integration and only requires few external components. The PT4305’s receive section includes a low-noise amplifier, image-reject mixer, IF band-pass filter, limiting amplifier, and frequency-shift keying (FSK) demodulator and also includes automatic gain control (AGC).| Part No. | PT4305 |
|---|---|
| Datasheet | PT4305 Download |
| Manufacturer |  PTC |
| Description | 315 MHz / 433.92 MHz PLL Tuned Low Power FSK Receiver |
| Buy | Stock & Price |
DESCRIPTION
A switched-capacitor data filter further filters the signal after the demodulator before a slicing comparator restores the data to full-swing CMOS logic levels. The local oscillator sub-system consists of a phase-locked loop (PLL) based on a crystal oscillator reference. The receiver channel frequency is determined by the choice of the crystal frequency. A built-in voltage regulator provides improved power supply rejection (PSR) and extends the supply voltage range from 2.4 V to 5.5 V. The PT4305 is available in a 16-pin SSOP package and its operation is specified over the temperature range from –40 to +85 °C. BLOCK DIAGRAMFEATURES
● Supply voltage range: 2.4 V to 5.5 V● Low current consumption: 5.2 mA (typical) at 433.92 MHz
● Supported data rate range: 1 Kb/s to 10 Kb/s
● Few external components
● Image-reject mixer
● On-chip auto-tuned channel-select band-pass filter
● Received signal strength indicator (RSSI)
● Leader-code detection
● 16-pin SSOP package
APPLICATIONS
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