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Maxim Integrated
Maxim Integrated
Maxim Integrated
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315MHz/433MHz ASK Superheterodyne Receiver with AGC Lock

Maxim Integrated

The MAX7033 fully integrated low-power CMOS superheterodyne receiver is ideal for receiving amplitude shift- keyed (ASK) data in the 300MHz to 450MHz frequency range. The receiver has an RF input signal range of -114dBm to 0dBm. With few external components and a low-current power-down mode, it is ideal for cost-sensitive and power-sensitive applications typical in the automotive and consumer markets.

Product Description

The MAX7033 consists of a low-noise amplifier (LNA), a fully differential image-rejection mixer, an on-chip phaselocked loop (PLL) with integrated voltage-controlled oscillator (VCO), a 10.7MHz IF limiting amplifier stage with received-signal-strength indicator (RSSI), and analog baseband data-recovery circuitry. The MAX7033 also has a discrete one-step automatic gain control (AGC) that reduces the LNA gain by 35dB when the RF input signal exceeds -62dBm. The AGC circuitry offers an externally controlled hold feature.

  • Optimized for 315MHz or 433MHz Band
  • High Dynamic Range with On-Chip AGC
  • AGC Hold Circuit
  • 1 ms AGC Release Time
  • Selectable Image-Rejection Center Frequency
  • 250µS Startup Time
  • Built-In 44dB RF Image Rejection
  • Better than -114dBm Receive Sensitivity
  • Antenna Connector:PCB, Surface Mount
  • Applications:Automotive RKE, Remote Controls, Wireless Sensors
  • Current - Receiving:5.2mA
  • Data Interface:PCB, Surface Mount
  • Data Rate (Max):33kbps
  • Frequency:315MHz, 433MHz
  • Modulation or Protocol:ASK
  • Mounting Type:Surface Mount
  • Operating Temperature:-40°C ~ 105°C
  • Package / Case:28-TSSOP (0.173", 4.40mm Width)
  • Sensitivity:-114dBm
  • Supplier Device Package:28-TSSOP
  • Voltage - Supply:3V ~ 3.6V