Freescale Launches Low-Power RF Transmit/Receive Devices
June 5, 2007 // Published as a news service by IHS
Freescale Semiconductor introduced the MC33696 phase-locked loop- (PLL-) tuned ultra-high frequency (UHF) transceiver and MC33596 low-voltage receiver for use in remote keyless entry, garage door control, radio frequency identification (RFID) products, alarm monitoring, wireless alarm and security systems, home automation and automatic meter reading.
Developers can use these access and remote control devices to streamline existing RF solutions and add wireless control to their products, according to Freescale.
The addition of a context switching feature enables the devices to be used for remote keyless entry (RKE), tire pressure monitoring systems (TPMS) or passive entry receivers in the car body.
Freescale offers a complimentary reference design that enables developers to evaluate and demonstrate low-power wireless connectivity with these devices in a range of applications.
The devices can be used across a voltage range of 2.1 Volts (V) to 5.5 V.
Both receivers feature:
- Frequencies of 304 MHz, 315 MHz, 426 MHz, 434 MHz, 868 MHz and 915 MHz industrial, scientific and medical (ISM) bands.
- Up to -108 decibels below 1 milliwatt (dBm) receive sensitivity.
- Configuration switching.
- Digital and analog received signal strength indicator (RSSI).
- Automatic wake-up function (strobe oscillator).
- Embedded data processor with programmable word recognition.
- Image canceling mixer.
- 380 kHz intermediate frequency (IF) filter bandwidth.
- Fast wake-up time.
- 9.2 mA in receive (Rx) mode.
The MC33696 transceiver also includes:
- Modulation: on-off keying (OOK) and frequency shift keying (FSK) (software selectable).
- RF transmitter programmable in four steps from -19 to +7 dBm.
- RF transmitter data rate of up to 20 kilobits per second (kbps).
- Data rate of up to 20 kbps.
The MC33696 and MC33596 devices are available in production quantities.
Source: Freescale Semiconductor.