A7108: Original spot A7108 wireless transceiver chip. Company advantage inventory.

A7108 is a monolithic low-IF architecture CMOS FSK/GFSK TRX for wireless applications in 315/433/470/510/868/

915MHz ISM band. In addition, the device is especially suitable for 470MHz ~ 510MHz wireless AMR (car meter)

read) in China.

A7108 is one of AMICCOM's high-performance Sub 1GHz series chips. The device provides a low-cost solution

Advanced radio features such as high output power amplifiers up to 20 dBm (433MHz band excluding LPF and HPF), and

Low Phase Noise Receiver (-114 dBm @ 10Kbps, -110dBm @ 50Kbps). Therefore, A7108 is very suitable for long LOS

(line of sight) applications without adding an external LNA or PA.

On-chip data rate splitter supports programmable over-the-air data rates from 2K to 250Kbps to suit different systems

Require. For battery powered systems, A7108 supports fast PLL settling time (35 us), Xtal settling time (500 us)

and on-chip regulator settling time (450 us) to reduce average power consumption.

For packet processing, the A7108 supports direct mode and FIFO mode. In RX direct mode, GIO1 or GIO2 can be

The raw data is serially output from the digital demodulator. In TX direct mode, the MCU can serially feed digital data to

Connect to GIO1 or GIO2 of the modulator. On the other hand, for packets in FIFO mode, the preamble is self

The generated packet ID can be programmed up to 8 bytes. Built-in separate 64-byte TX/RX FIFO for

Treated as data buffered payload, including CRC for error detection, FEC for error correction, data whitening for data

Encrypt/Decrypt and Manchester encoding.

Additional device features such as on-chip voltage regulator, low battery detect, carrier detect, preamble detect, frame sync input

FIFO mode, AGC (Auto Gain Control), AFC (Auto Frequency Compensation), Auto Calibration (VCO and IF Filter),

Programmable IF filter, multiple Xtal sources, on-chip Xtal compensation capacitors and RSSI for clear channels

Auxiliary is used to simplify system development and cost. Overall, the A7108 is high performance and highly

Integrated ISM band TRX for low BOM cost

typical application

Wireless ISM band data communication

? Remote control

RKE (Remote Keyless Entry)

wireless energy management

? Home automation

? AMR (Automatic Meter Reading)

feature

? Small size (QFN 4X4, 20 pins).

Frequency bands: 315/433/470/868/915 MHz.

?FSK and GFSK modulation.

3-wire or 4-wire SPI is supported.

? Deep sleep current (0.2uA).

• Low sleep current (2 uA).

?TX current consumption 433MHz: 30mA @ 10dBm, 70mA @ 17dBm.

TX current consumption 868MHz: 37mA at 10mA, 52mA at 13dBm.

?RX current consumption (AGC off) 434MHz: 13.5 mA and 868MHz: 14 mA.

On-chip voltage regulator, support input voltage 2.0 ~ 3.6V.

? Programmable data rate from 2Kbps to 250Kbps.

? Physical 64-byte TX/RX FIFO buffer.

?FIFO expansion up to 256 bytes.

? RX sensitivity is high 433.92MHz.

?-117dBm at 2Kbps broadcast data rate.

-114dBm at 10Kbps broadcast data rate.

-110dBm at 50Kbps air data rate.

?-107dBm at 100Kbps air data rate.

? -106dBm at 150Kbps air data rate.

? -103dBm at 250Kbps broadcast data rate.

? PLL settling time is short (35 us).

• On-chip full-scale VCO and fractional-N PLL synthesizer.

? On-chip low-power RC oscillator for WOR (RX wake-up) function.

• AFC (Automatic Frequency Compensation) for frequency drift due to Xtal aging.

? Supports low-cost crystal oscillators (12, 8/16 MHz).

? On-chip 9-bit ADC and RSSI (Received Signal Strength Indicator).

? Programmable IF filter bandwidth (50K/100K/150KHz/250KHz)

• Programmable threshold for carrier detect.

A7108

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A71X25AQFI/Q

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