PT4316是低功耗433/315MHz Ook / ASK超外差接收器与基于SAW振荡器 超外差、高稳定性、抗干扰能力强，低成本.媲美超再生
1 接收灵敏度-105DBM以上，传输距离150-400米。
2低功耗：2MA - 4Ma ,数据率：ASK/OOK 模式，20Kbps(Max)
3应用范围：汽机车防盗器，无线门钤、无线控制灯、天气等短距离RF无线产品
DESCRIPTION
The PT4316 is a very low power consumption single chip OOK/ASK superheterodyne receiver for the 315MHz and 434 MHz frequency bands, which offers a high level of integration and requires few external components. The PT4316 consists of a low-noise amplifier (LNA), mixer, SAW-based local oscillator, on-chip Sallen-Key low-pass filter, intermediate frequency (IF) limiting amplifier stage with received-signal-strength indicator (RSSI), and analog baseband data recovery circuitry (data filter, peak detector, and data slicer). The PT4316 also implements a discrete one-step automatic gain control (AGC) that reduces the LNA gain by 20 dB when the RF input signal is greater than -60 dBm. The PT4316 is available in a 16-pin SOP or SSOP package. Both versions are specified over the extended temperature range (-40℃ to +85℃).
FEATURES
• Low current consumption (4.2 mA at VDD = 3.0 V)
• 2.4 V to 3.6 V supply voltage operation range
• Optimized for 315 MHz or 434 MHz ISM Band
• Saw-based oscillator with low frequency drift
• High dynamic range with on-chip AGC
• Power down mode with very low supply current (<1 μA)
• Low external parts count
• Available in 16-pin SOP or SSOP package
APPLICATIONS
• Keyless entry systems
• Remote control systems
• Garage door openers
• Alarm systems
• Security systems
• Wireless sensors
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