QuickView - MAX7033 315MHz/433MHz ASK Superheterodyne Receiver with AGC Lock

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Description

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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. 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 a 28-pin TSSOP package and is specified over the extended (-40°C to +105°C) temperature range.

Key Features

Applications/Uses

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 f_LO/f_XTAL 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
Underwriters Laboratories (UL®) Recognized

	Automotive Remote Keyless Entry
	Garage Door Openers
	Home Automation
	Local Telemetry
	Remote Controls
	Security Systems
	Wireless Sensors

Key Specifications: ISM RF Receivers

Part Number

Supply Current (mA)

Applications

Solutions

Band/Freq (MHz)

Features

Footprint (mm x mm)

Package

Smallest Available Package (max w/pins) (mm²)

RoHS Available

Price^**

MAX7033

5.2

•

ISM

300MHz to 450MHz
400MHz

300 to 450

•	-40C to 105C operation

•	1ms AGC Release Time

•	5.2mA Operating Supply Current

•	44dB RF Image_Rejection

•	<3.5uA Power_down mode

•	AGC Lock feature

•	Better than -114dBm Receive Sensitivity

•	On-Chip PLL, VCO and Loop Filter

•	Operates from Single 3.3V or 5.0V Supplies

5.0 x 5.0
6.3 x 9.7

TQFN/32
TSSOP/28

Yes

$2.20 @ 1k

See All ISM RF Receivers (7)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.