MAX1473：315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range
Industry's First 300MHz to 450MHz Superheterodyne Receiver with AGC and Integrated Image Rejection Operates from 3V or 5V Supplies
The MAX1473 fully integrated low-power CMOS superheterodyne receiver is ideal for receiving amplitude-shift-keyed (ASK) data in the 300MHz to 450MHz frequency range. Its signal range is from -114dBm to 0dBm. With few external components and a low-current power-down mode, it is ideal for cost- and power-sensitive applications typical in the automotive and consumer markets. The chip 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 MAX1473 also has a discrete one-step automatic gain control (AGC) that drops the LNA gain by 35dB when the RF input signal is greater than -57dBm. The MAX1473 is available in 28-pin TSSOP and 32-pin thin QFN packages. Both versions are specified for the extended (-40°C to +85°C) temperature range.
Key Features
| MAX1473: Typical Application Circuit Applications/Uses
|
DataSheet
| title | Download file |
|---|---|
| MAX1473 Data Sheet | MAX1473.pdf |
Parametrics
| Part Number | IF Output Freq. (MHz) | VSUPPLY (V) | ISUPPLY (mA) | Applications | Solutions | Band/ Freq. (MHz) | Footprint (mm x mm) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|
| See Notes | |||||||||
| MAX1473 | 10.7 | 2.4 to 3.6 4.5 to 5.5 | 5.2 | Garage Door Openers ISM RKE Remote Controls Remote Keyless Entry Security Systems TPM Wireless Sensors | 300MHz to 450MHz 400MHz | 300 to 450 | 5.0 x 5.0 6.3 x 9.7 | TQFN/32 TSSOP/28 | $1.75 @1k |
Design kits & evaluation modules
Quality and Environmental Data
Related Products
- MAX1472：300MHz-to-450MHz Low-Power, Crystal-Based ASK Transmitter
- MAX1470：315MHz Low-Power, +3V Superheterodyne Receiver
Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| MAX1473ETJ+ | Active | TQFN,;32 pin;26 mm² | -40°C to +85°C | Lead Free | |
| MAX1473ETJ+T | Active | TQFN,;32 pin;26 mm² | -40°C to +85°C | Lead Free | |
| MAX1473EUI | No Longer Available | MAX1473EUI+ | TSSOP,;28 pin;64.7 mm² | -40°C to +85°C | No |
| MAX1473EUI+ | Active | TSSOP,;28 pin;64.7 mm² | -40°C to +85°C | Lead Free | |
| MAX1473EUI+T | Active | TSSOP,;28 pin;64.7 mm² | -40°C to +85°C | Lead Free | |
| MAX1473EUI-G05 | No Longer Available | TSSOP; | -40°C to +85°C | See data sheet | |
| MAX1473EUI-T | No Longer Available | MAX1473EUI+T | TSSOP,;28 pin;64.7 mm² | -40°C to +85°C | No |
| MAX1473EUI-TG05 | No Longer Available | TSSOP,;28 pin;64.7 mm² | -40°C to +85°C | No |
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