MAX7033:315MHz/433MHz ASK Superheterodyne Receiver with AGC Lock

300MHz to 450MHz Superheterodyne Receiver with Integrated Image Rejection Operates Up to +105°C

The MAX7033 fully integrated low-power CMOS super-heterodyne 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 consumer markets. The MAX7033 consists of a low-noise amplifier (LNA), a fully differential image-rejection mixer, an on-chip phase-locked 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. The MAX7033 is available in 28-pin TSSOP and 32-pin TQFN packages and is specified over the extended (-40°C to +105°C) temperature range.

Key Features
  • Optimized for 315MHz or 433MHz Band
  • Operates from Single +3.3V or +5.0V Supplies
  • High Dynamic Range with On-Chip AGC
  • AGC Hold Circuit
  • 1ms AGC Release Time
  • Selectable Image-Rejection Center Frequency
  • Selectable x64 or x32 fLO/fXTAL Ratio
  • Low 5.2mA Operating Supply Current
  • < 3.5µA Low-Current Power-Down Mode for Efficient Power Cycling
  • 250µs Startup Time
  • Built-In 44dB RF Image Rejection
  • Better than -114dBm Receive Sensitivity
  • -40°C to +105°C Operation
Applications/Uses
  • Garage Door Openers
  • Home Automation
  • Local Telemetry
  • Remote Controls
  • Security Systems
  • Wireless Sensors
DataSheet
titleDownload file
MAX7033 Data SheetMAX7033.pdf
Parametrics
Part NumberIF Output Freq.
(MHz)
VSUPPLY
(V)
ISUPPLY
(mA)
ApplicationsSolutionsBand/ Freq.
(MHz)
Footprint
(mm x mm)
Package/PinsBudgetary
Price
See Notes
MAX703310.74.5 to 5.55.2Garage Door Openers
ISM
RKE
Remote Controls
Remote Keyless Entry
Security Systems
TPM
Wireless Sensors
300MHz to 450MHz
400MHz
300 to 4505.0 x 5.0
6.3 x 9.7
TQFN/32
TSSOP/28
$1.77 @1k
Design kits & evaluation modules
Related Products
  • MAX7044:300MHz to 450MHz High-Efficiency, Crystal-Based +13dBm ASK Transmitter
  • MAX1472:300MHz-to-450MHz Low-Power, Crystal-Based ASK Transmitter
  • MAX1473:315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range
  • MAX1470:315MHz Low-Power, +3V Superheterodyne Receiver
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX7033ETJ+No Longer AvailableTQFN,;32 pin;26 mm²-40°C to +85°CLead Free
MAX7033ETJ+TNo Longer AvailableQFN;-40°C to +85°CSee data sheet
MAX7033EUINo Longer AvailableMAX7033EUI+TSSOP,;28 pin;64.7 mm²-40°C to +85°CNo
MAX7033EUI+ActiveTSSOP,;28 pin;64.7 mm²-40°C to +85°CLead Free
MAX7033EUI+TActiveTSSOP,;28 pin;64.7 mm²-40°C to +85°CLead Free
MAX7033EUI-TNo Longer AvailableMAX7033EUI+TTSSOP,;28 pin;64.7 mm²-40°C to +85°CNo
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