Datasheet, Revision 3 ZL70251 Ultra-Low-Power Sub-GHz RF Transceiver Features Applications Ultralow Power Body-Area Network Typical TX Current (with 50- match): <2.4mA at 11dBm Energy Harvesting <5.5mA at 0dBm Wireless Sensor Network Typical RX Current: <2.3mA Remote Control Sleep Current: <500nA typical Voice/Compressed-Audio Communication Supply: 1.2V to 1.9V RF Switch Operating Frequency Range: 779MHz to 965MHz Active RFID North American ISM Band: 902MHz to 928MHz Inventory Management European SRD Band: 863MHz to 870MHz Chinese Band: 779MHz to 787MHz Description Key Performance Parameters Raw Data Rate: 136.5kbit/s or 186kbit/s The ZL70251 ultra-low-power RF transceiver provides a wireless TX Power: up to 0dBm link in applications where power consumption is of primary RX Sensitivity: 94dBm Typical at 186kbit/s importance. The transceivers ultralow power requirements allow Very Few External Components the use of a coin-cell battery or energy-harvesting sources, Only Crystal, Decoupling Capacitors, and Bias Resistor enabling devices with extremely small form factors. Standard Interfaces The ultra-low-power device operates in unlicensed frequency SPI Bus Master for Packet Data bands between 779MHz and 965MHz with a data rate of Two-Wire for Status and Control 136.5kbit/s or 186kbit/s. Duty cycling can be employed for MAC applications that require lower average payload to further reduce Clear Channel Assessment power consumption. Automatic Receive or Sleep after Sniff Automatic Turn-Around in Bidirectional Mode Ordering Information Packetization Preamble and Frame Sync ZL70251UEB2 36-Pin CSP, SAC405, in T&R Whitening Receive on Preamble Detection or RSSI Threshold RoHS Compliant 24.572675-MHz Crystal Note: Oscillator frequency = 24.576 MHz without load capacitors VDDA VSSA VSSA2 CLKSEL CLK OUT VDDD MAC 1.117091 MHz (24.576/22) VSSD V Crystal Clock 303 kHz (24.576/81) Reference Oscillator Generator RESET B RBIAS I Phase Charge Range SCL 16/17 A&M Reference Loop LP Detector Pump Compare SDA prescaler Counter Filter IRQ TXRX STAT RX+ VCO 779/965 MHz TXRX CMD TX+ PLL Tuning PA Buf Modulation Gaussian TX- TX data DAC Tuning Filter SPI CLK RX- Coarse Tuning SPI SEL B VSSH SPI DATA OUT AFC SPI DATA IN Digital Post- IF Filter FM Mixer Limiter RX data LNA Detection Detector Filter RSSI RSSI Antenna Peak DOUT0 Peak Detector Tune Five- Detector DOUT1 bit Test Buffers ADC AMX2 Analog Test Mux ZL70251 AMX0 AMX1 AMX2 AMX3 VDDTST 0059v1305.1 Figure 1 ZL70251 Block Diagram (configured for 300-kHz channel width) March 2018 I 2018 Microsemi Corporation XTAL1 XTAL2ZL70251 Ultra-Low-Power Sub-GHz RF Transceiver Table of Contents ZL70251 Ultra-Low-Power Sub-GHz RF Transceiver 1 Overview 2 Functional Description Control Interface . 2-1 Data Interface . 2-3 3 Electrical Reference Absolute Maximum Ratings 3-1 Recommended Operating Conditions 3-1 Digital Interface . 3-1 Performance Characteristics . 3-2 Transmit Power Characteristics . 3-4 Crystal Specifications . 3-5 4 Mechanical Specifications 36-Pin Chip Scale Package (CSP) . 4-1 5 Typical Application Example 6 Glossary 7 Datasheet Information List of Changes . 7-1 Datasheet Categories . 7-2 Safety Critical, Life Support, and High-Reliability Applications Policy 7-2 Revision 3 II