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Index > Product > Sub 1GHz Short Range Devices > A7129
A7129
Selection Guide
| General Description |
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A7129 is a monolithic low-IF architecture CMOS FSK/GFSK TRX for wireless applications in the 315/433/470/868/ 915MHz ISM bands. This device is especially suitable for battery-powered application and the 470MHz ~ 510MHz wireless AMR (Auto Meter Reading) in China and 868.3MHz wireless M-bus in Europe. A7129 is one of AMICCOM’s Mini Power Consumption Family in sub 1GHz ISM band product line. A7129 is optimized for very low power consumption (i.e. 434MHz band, 3.8mA @ RX mode and 24 mA @ TX mode,10.5dBm). In addition, A7129 can offer a very good link budget with a high efficient class-E power amplifier up to 12dBm and a low phase noise receiver (-108dBm RX sensitivity @ 100Kbps / FSK / 433.92MHz). Therefore, A7129 is very suitable for battery powered application with a nice LOS (line-of-sight) wireless range. A7129 incorporates a baseband modem with the programmable data rate divider from 2K to 250Kbps. For a battery powered system, A7129 supports fast PLL settling time (120 us), Xtal settling time (600 us) and on-chip Regulator settling time (1 ms) to reduce average power consumption. The RF synthesizer contains a VCO and a low noise fractional-N PLL with an output channel frequency resolution of 366 Hz. The VCO frequency operates at the wanted radio frequency to cover all RF band. Since A7129 is a low-IF architecture TRX with programmable IFBW (IF Filter Bandwidth, 50KHz/100KHz/150KHz/250KHz), the RXLO shall be configured to offset an intermediate frequency (IF) to TXRF regarding to the IFBW setting. A7129’s control registers are accessed via 3-wire or 4-wire SPI interface including TX/RF FIFO, VCO frequency, to chip calibration procedures. Another one, via SPI as well, is the unique Strobe Command, A7129 can be controlled from power saving mode (deep sleep, sleep, idle, standby), PLL mode, TX mode and RX mode. In addition to SPI, the digital connections between A7129 and MCU are GIO1 and GIO2 (multi-function GPIO) to indicate A7129’s status so that MCU could use either polling or interrupt for radio control. For packet handling, A7129 supports direct mode and FIFO mode. In direct mode, MCU or Encoder shall deliver the defined packet (preamble + sync word + payload) to GIO1 or GIO2/TXD pin. Then, in RX mode, MCU or Decoder can receive the coming packet (preamble + sync word + payload) in bit sequence from GIO1 or GIO2/RXD pin. In FIFO mode, preamble is self-generated by A7129. User just needs to assign the sync word to this device by ID R/W command via SPI. For payload, the built-in separated 64-bytes TX/RX FIFO are used to be this purpose to let user R/W the wanted payload. User can also enable additional packet features like CRC for error detection, FEC (hamming 7 by 4) for 1-bit data correction per code word, Manchester coding, as well as data whitening for data encryption / decryption. Additional device features such as on-chip regulator, RSSI for clear channel assessment, a thermal sensor, low battery detector, carrier detect, preamble detect, frame sync in FIFO mode, auto-ack and auto-resend, AIF (Auto IF function), AFC (Auto Frequency compensation), Auto calibration (VCO, IF Filter), PLL/CLK Generator, on-chip compensated capacitors of Xtal loading, and WOR (Wake on RX) to support the ability to periodically wake up from sleep mode to RX mode and listen for incoming packets without MCU interaction, can be used to simplify system development and cost. Overall, A7129’s highly integrated features and low current consumption offer a reduced BOM cost for a high performance ISM bands product. All features are integrated in a small QFN 4X4 24 pins package. |
Small size (QFN 4X4, 24 pins).
Frequency band: 315/433/470/510/868/915 MHz.
FSK and GFSK modulation.
Programmable data rate from 2Kbps to 250Kbps.
Programmable TX power level from – 40dBm to 12dBm.
On chip regulator, supports input voltage 1.9 ~ 3.6 V.
Deep sleep current (0.5uA).
Sleep current (1.5uA).
Ultra Low Current Consumption
RX Current consumption (AGC Off) 434MHz: 3.8mA.
RX Current consumption (AGC Off) 868MHz: 4.4mA.
TX Current consumption 433MHz: 24mA @ 10.5dBm.
TX Current consumption 868MHz: 24mA @ 10dBm.
Fast PLL settling time (120 us).
Supports low cost crystal (12.8 / 16 / 19.2 MHz).
AGC (Auto Gain Control) for the wide RSSI dynamic range.
Programmable IF filter bandwidth (50KHz / 100KHz / 150KHz / 250KHz).
High RX sensitivity, i.e. 490MHz.
-120dBm at 2Kbps on-air data rate.
-109dBm at 50Kbps on-air data rate.
-107dBm at 100Kbps on-air data rate.
Easy to use
Support 3-wire or 4-wire SPI.
Unique Strobe command via SPI.
AGC ON with 9-bits RSSI.
AGC OFF with 8-bits RSSI.
Auto Calibrations (VCO, IF Filter, RSSI).
Auto IF function.
Auto Frequency Compensation.
Auto CRC Filtering.
Auto FEC by (7, 4) Hamming code (1 bit error correction / code word).
Auto-resend (max 15 cycles).
Auto-acknowledgement.
Manchester encoding.
Programmable carrier sense indicator.
Data Whitening for payload encryption and decryption.
Separated 64 bytes RX and TX FIFO.
Easy FIFO / Segment FIFO / FIFO Extension (16K bytes to infinite).
Support FIFO mode with frame sync to MCU.
Support direct mode with recovery clock output to MCU.
On chip 8-bits ADC.
Low Battery indication.
On-chip low power RC oscillator for WOT/WOR/TWOR function.
Frequency band: 315/433/470/510/868/915 MHz.
FSK and GFSK modulation.
Programmable data rate from 2Kbps to 250Kbps.
Programmable TX power level from – 40dBm to 12dBm.
On chip regulator, supports input voltage 1.9 ~ 3.6 V.
Deep sleep current (0.5uA).
Sleep current (1.5uA).
Ultra Low Current Consumption
RX Current consumption (AGC Off) 434MHz: 3.8mA.
RX Current consumption (AGC Off) 868MHz: 4.4mA.
TX Current consumption 433MHz: 24mA @ 10.5dBm.
TX Current consumption 868MHz: 24mA @ 10dBm.
Fast PLL settling time (120 us).
Supports low cost crystal (12.8 / 16 / 19.2 MHz).
AGC (Auto Gain Control) for the wide RSSI dynamic range.
Programmable IF filter bandwidth (50KHz / 100KHz / 150KHz / 250KHz).
High RX sensitivity, i.e. 490MHz.
-120dBm at 2Kbps on-air data rate.
-109dBm at 50Kbps on-air data rate.
-107dBm at 100Kbps on-air data rate.
Easy to use
Support 3-wire or 4-wire SPI.
Unique Strobe command via SPI.
AGC ON with 9-bits RSSI.
AGC OFF with 8-bits RSSI.
Auto Calibrations (VCO, IF Filter, RSSI).
Auto IF function.
Auto Frequency Compensation.
Auto CRC Filtering.
Auto FEC by (7, 4) Hamming code (1 bit error correction / code word).
Auto-resend (max 15 cycles).
Auto-acknowledgement.
Manchester encoding.
Programmable carrier sense indicator.
Data Whitening for payload encryption and decryption.
Separated 64 bytes RX and TX FIFO.
Easy FIFO / Segment FIFO / FIFO Extension (16K bytes to infinite).
Support FIFO mode with frame sync to MCU.
Support direct mode with recovery clock output to MCU.
On chip 8-bits ADC.
Low Battery indication.
On-chip low power RC oscillator for WOT/WOR/TWOR function.
ISM Band Data Communication
Wireless Remote Controller
Building Automation
Home Security
Wireless Sensor Networking
Energy Control and Management
RKE (Remote Keyless Entry)
AMR (Auto Metering Reading)
Wireless Remote Controller
Building Automation
Home Security
Wireless Sensor Networking
Energy Control and Management
RKE (Remote Keyless Entry)
AMR (Auto Metering Reading)
Datasheet
Application Note
Reference circuit design (Module)
Reference code
Evaluation kit (EK)
Development Kit (DK)
Production test tool
*Please contact the agents or sales for more details
Application Note
Reference circuit design (Module)
Reference code
Evaluation kit (EK)
Development Kit (DK)
Production test tool
*Please contact the agents or sales for more details
