Low-power low-IF transceiver IC operates in license-free ISM bands at 433 MHz, 868 MHz, 915 MHz, and the proposed 950 MHz Japanese RFID band. The device supports FSK/GFSK data rates from 0.15 kbps to 200 kbps and ASK/OOK data rates from 0.15 kbps to 64 kbps. It operates from a 2.3 V to 3.6 V supply with programmable transmit output power up to +13 dBm. The receiver provides high sensitivity down to −119 dBm at 1 kbps FSK, with integrated fractional-N PLL, VCO, 7-bit ADC, temperature sensor, digital RSSI, and automatic frequency control. Industrial-temperature operation is specified from −40°C to +85°C in a 48-lead 7 mm × 7 mm LFCSP package with exposed pad.
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| RF frequency range, direct output | 862 to 956MHz |
| RF frequency range, divide-by-2 mode | 431 to 478MHz |
| FSK/GFSK data rate | 0.15 to 200kbps |
| ASK/OOK data rate | 0.15 to 64kbps |
| Supply voltage | 2.3 to 3.6V |
| Transmit output power | -20 to +13dBm |
| Output power step size | 0.3125dB |
| FSK/GFSK frequency deviation | 1 to 110kHz |
| ASK modulation depth | 30dB |
| Receiver sensitivity, FSK at 1 kbps | -119.2dBm |
| Receiver sensitivity, FSK at 9.6 kbps | -112.8dBm |
| Receiver sensitivity, ASK/OOK at 9.6 kbps | -106.5dBm |
| Receive current, low-current mode | 19mA |
| Transmit current at +10 dBm | 26.8mA |
| Power-down leakage current | <1µA |
| Serial control interface | 3-wire |
| ADC resolution | 7bit |
| Operating temperature range | -40 to +85°C |
| Package | 48-lead LFCSP, 7 mm x 7 mm, exposed pad |
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