ANS1801 energy scavenging ULP transceiver The Challenge To develop a wireless transceiver enabling unique wireless solutions for ISM applications, featuring: low-power supply power consumption ~2mA  single or no battery operation  high flexibility Result An ultra low-power RF ISM transceiver in 0.25µm CMOS with a power consumption of 2.6mW for transmission and 1.2mW for reception. The transceiver’s low operating voltage - as low as 0.9V - makes it possible to use a single alkaline or even a zinc-air battery. The combination of low voltage and low power consumption enables battery-less applications, e.g. solar cells or other energy scavenging methods.  A high flexibility is achieved by using a programmable power supply for the transmitter PA. Both short and mid range (~100m) communication are supported. The receiver has a high sensitivity and low power consumption, which makes it suitable for watchdog applications. Key baseline features Frequencies 315 MHz, 418 MHz, 426 MHz, 433 MHz Programmable frequency channels with 60 Hz accuracy Internally generated power supply Possibility to combine with external power supply (0.9 V to 1.6 V) Ultra low transmitter current consumption: 1.9 mA @ -10 dBm output power Ultra low transmitter energy consumption: 10 nJ/bit @ -10 dBm output power Programmable output power from -20 dBm to +15 dBm (in 20 discrete steps) Ultra low receiver power consumption: 1.2 mW Programmable FSK data rate from 0.9 to 200 kbps (transmit) and 2.4 to 19.2 kbps (receive) Programmable frequency deviation from 60 Hz to 125 kHz Built in filtering of FSK modulation for low adjacent channel power Supports EN 300 220, FCC part 15, Wide Band Standard for Japan, Narrow Band Standard for Japan, Korea, China, Hong Kong Small Size (8x8mm² QFN56) On-chip possibility for XTAL trimming without need for TCXO On-chip automatic VCO trimming Fast PLL for use of frequency hopping spread spectrum Quick crystal startup Programmable preamplification and filtering of incoming sensor signal (e.g. ECG, EMG) Ultra low power 14 bit analog-to-digital converter:  48 µA (2.5 ksamples/s) On-chip temperature sensor Advanced stand-by current saving function		Applications Ultra low-power wireless ISM and WMTS transceivers Body Area Networking / Biomedical telemetry Wireless sensor networks RFID network communication Wireless alarm and security systems Keyless entry Ultra low power telemetry Environmental control Car entry systems Short-range packet oriented data transmission Domestic and industrial remote control systems Remote metering Toys