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A7136
產品選擇指南
| General Description |
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A7136 is a monolithic low-IF architecture CMOS FSK/GFSK TRX for wireless applications in the 169/315/433/470/868/ 915MHz ISM bands. This device is especially suitable for battery-powered application and the 470MHz ~ 510MHz wireless AMR (Auto Meter Reading) in China and 169.4MHz/433.8MHz/868.3MHz wireless M-bus in Europe. The RF synthesizer contains a VCO and a low noise fractional-N PLL with an output channel frequency resolution of 61Hz for 433/470 MHz band. The VCO frequency operates at the wanted radio frequency to cover all RF band. A7136’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, A7136 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 A7136 and MCU are GIO1 and GIO2 (multi-function GPIO) to indicate A7136’s status so that MCU could use either polling or interrupt for radio control. For packet handling, A7136 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 A7136. User just needs to assign the sync word to this device by ID R/W command via SPI. For payload, the built-in separated 128-bytes TX/RX FIFO are used for 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, which can be used to simplify system development and cost. Overall, A7136’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: 169/315/433/470/510/868/915MHz.
2FSK/4FSK, 2GFSK/4GFSK and OOK modulation
Programmable data rate from 0.25Kbps to 500Kbps.
Programmable TX power level from – 24dBm to 19.4dBm.(433MHz)
On chip regulator, supports input voltage 2.0V ~ 3.6 V.
Sleep current (1.3uA).
Low Current Consumption
RX Current consumption 433MHz: 15.5mA
RX Current consumption 433MHz: 8.2mA with dc-dc converter turn on.
TX Current consumption 433MHz: 82.9mA @ 19.4dBm with dc-dc converter turn on.
Fast PLL settling time.
AGC (Auto Gain Control) for the wide RSSI dynamic range.
Programmable channel filter bandwidth (0.25KHz ~ 700KHz).
High RX sensitivity, e.g. 433MHz.
-122dBm at 1.25Kbps on-air data rate, dc-dc on.
-115dBm at 9.6Kbps on-air data rate, dc-dc on.
-97dBm at 500Kbps on-air data rate, dc-dc on.
Easy to use
Support 3-wire or 4-wire SPI.
Unique Strobe command via SPI.
AGC ON with 12-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 128 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.
Low Battery indication.
Symbol timing recovery circuit for data rate clock error tolerance up to-/+12%
On-chip low power RC oscillator for WOT/WOR/TWOR function.
Frequency band: 169/315/433/470/510/868/915MHz.
2FSK/4FSK, 2GFSK/4GFSK and OOK modulation
Programmable data rate from 0.25Kbps to 500Kbps.
Programmable TX power level from – 24dBm to 19.4dBm.(433MHz)
On chip regulator, supports input voltage 2.0V ~ 3.6 V.
Sleep current (1.3uA).
Low Current Consumption
RX Current consumption 433MHz: 15.5mA
RX Current consumption 433MHz: 8.2mA with dc-dc converter turn on.
TX Current consumption 433MHz: 82.9mA @ 19.4dBm with dc-dc converter turn on.
Fast PLL settling time.
AGC (Auto Gain Control) for the wide RSSI dynamic range.
Programmable channel filter bandwidth (0.25KHz ~ 700KHz).
High RX sensitivity, e.g. 433MHz.
-122dBm at 1.25Kbps on-air data rate, dc-dc on.
-115dBm at 9.6Kbps on-air data rate, dc-dc on.
-97dBm at 500Kbps on-air data rate, dc-dc on.
Easy to use
Support 3-wire or 4-wire SPI.
Unique Strobe command via SPI.
AGC ON with 12-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 128 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.
Low Battery indication.
Symbol timing recovery circuit for data rate clock error tolerance up to-/+12%
On-chip low power RC oscillator for WOT/WOR/TWOR function.
ISM Band Data Communication
Wireless Remote Controller
RKE (Remote Keyless Entry)
Building Automation
Home Security
Wireless Sensor Networking
Energy Control and Management
AMR (Auto Metering Reading)
Wireless M-bus
Wireless Remote Controller
RKE (Remote Keyless Entry)
Building Automation
Home Security
Wireless Sensor Networking
Energy Control and Management
AMR (Auto Metering Reading)
Wireless M-bus
