MICRF219A_15 Datasheet, PDF (1/25 Pages) Micrel Semiconductor – 300MHz to 450MHz ASK/OOK Receiver with Auto-Poll, and RSSI

MICRF219A
300MHz to 450MHz ASK/OOK Receiver with
Auto-Poll, and RSSI
General Description
The MICRF219A is a 300MHz to 450MHz super-
heterodyne, image-reject, RF receiver with automatic gain
control, ASK/OOK demodulator, and analog RSSI output.
It only requires a crystal and a minimum number of
external components to implement. The MICRF219A is
ideal for low-cost, low-power, RKE, TPMS, and remote
actuation applications.
The MICRF219A achieves −110dBm sensitivity at a bit
rate of 1kbps with 0.1% BER. Four demodulator filter
bandwidths are selectable in binary steps from 1625Hz to
13kHz at 433.92MHz, allowing the device to support bit
rates up to 20kbps. The device operates from a supply
voltage of 3.0V to 3.6V, and typically consumes 4.3mA of
supply current at 315MHz and 6.0mA at 433.92MHz. A
shutdown mode reduces supply current to 0.1μA typical.
Datasheets and support documentation can be found on
Micrel’s website at: www.micrel.com.
Features
• –110dBm sensitivity at 1kbps with 0.1% BER
• Auto-polling mode with bit checking
• Supports bit rates up to 20kbps at 433.92MHz
• 25dB image-reject mixer
• No IF filter required
• 60dB analog RSSI output range
• 3.0V to 3.6V supply voltage range
• 4.3mA supply current at 315MHz
• 6.0mA supply current at 434MHz
• 13μA supply current in sleep mode
• 0.1μA supply current in shutdown mode
• 16-pin QSOP package (4.9mm x 6.0mm)
• −40°C to +105°C temperature range
• 3kV HBM ESD Rating
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Typical Application
MICRF219A Typical Application Circuit (433.92MHz, 1kbps)
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
August 12, 2015
Revision 3.0
[e-mail] or [phone]