A7125-2.4GHZ 2Mbps无线音视频传输Rf IC
1. typical application
2.4ghz ism band communication system wireless intelligent sports
2.4ghz remote control wireless toy and gaming
wireless keyboard and mouse wireless audio/video streaming
2. general deｓｃｒｉｐｔion
a7125 is a high performance and low cost 2.4ghz ism band wireless transceiver. it integrates high sensitivity receiver(-90dbm @2mbps), high efficiency power amplifier (up to 3dbm), frequency synthesizer and base-band modem. in typical system, a7125 is used together with mcu (microcontroller) with very few external passive components. a7125 supports both fifo mode and direct mode that contains clock recovery circuit cko pin to mcu.
a7125 supports very fast settling time (90 us) for frequency hopping system. for packet handling, a7125 has built-in separated 64-bytes tx/rx fifo (could be extended to 256 bytes) for data buffering and burst transmission, crc for error detection, fec for 1-bit data correction per code word, rssi for clear channel assessment, data whitening for data encryption/decryption, thermal sensor for monitoring relative temperature. those functions are very easy to use while developing a wireless system. all features are integrated in a small qfn 4x4 20 pins package.
a7125’s data rate is up to 2mbps and can be easily programmed to 1mbps or 2 mbps via 3-wire or 4-wire spi bus. for power saving, a7125 supports sleep mode, idle mode, standby mode. for easy-to-use, a7125 has an unique spi command set called strobe command that are used to control a7125’s state machine. based on strobe commands, from power saving, tx delivery, rx receiving, channel monitoring, frequency hopping to auto calibrations, mcu only needs to define a7125’s control registers and send strobe commands via spi bus. in addition, a7125 supports two general purpose
i/o pins, gio1 and gio2, to inform mcu its status so that mcu could use either polling or interrupt scheme to do radio control. therefore, it is very easy to monitor transmission between mcu and a7125 because of its digital interface.
3. feature
small size (qfn 4x4, 20 pins).
support 2400 ~ 2483.5 mhz ism band.
fsk modulation.
programmable data rate to 1mbps or 2mbps.
low current consumption: rx 17ma, tx 15.7ma (at 0dbm output power).
low sleep current (1.5ua).
programmable rf output power -20dbm ~ 3dbm.
very high sensitivity (-90dbm@2mbps, -92dbm@1mbps).
on chip regulator, supports input voltage 2.0 ~ 3.6v.
easy to use
support 3-wire or 4-wire spi.
unique strobe command via spi.
change frequency channel by one register setting.
8-bits digital rssi for clear channel indication.
fast exchange mode during trx role switching.
auto rssi measurement.
auto calibrations.
auto if function.
auto crc check.
auto fec by (7, 4) hamming code (1 bit error correction / code word).
data whitening for encryption and decryption.
separated 64 bytes rx and tx fifo.
easy fifo / segment fifo / fifo extension (up to 256 bytes).
support direct mode with recovery clock output to mcu.
support direct mode with frame sync signal to mcu.
support low cost crystal (6 / 8 /12 / 16mhz).
support low accuracy crystal within ± 50ppm.
support auto frequency compensation.
support crystal sharing, (1 / 2 / 4 / 8mhz) to mcu.
fast settling time synthesizer for frequency hopping system.
built-in thermal sensor for monitoring relative temperature
云端未来：运行方式差异较大！云游戏比本地游戏好在哪？
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2019世界人工智能大会 | 叠境数字多项创新AI技术首发
A7125-2.4GHZ 2Mbps无线音视频传输Rf IC
准备好让机器人与我们一起走在路上了吗?
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国星光电上半年净利实现2.25亿元，增长46.49%
2.4ghz ism band communication system wireless intelligent sports
2.4ghz remote control wireless toy and gaming
wireless keyboard and mouse wireless audio/video streaming
2. general deｓｃｒｉｐｔion
a7125 is a high performance and low cost 2.4ghz ism band wireless transceiver. it integrates high sensitivity receiver(-90dbm @2mbps), high efficiency power amplifier (up to 3dbm), frequency synthesizer and base-band modem. in typical system, a7125 is used together with mcu (microcontroller) with very few external passive components. a7125 supports both fifo mode and direct mode that contains clock recovery circuit cko pin to mcu.
a7125 supports very fast settling time (90 us) for frequency hopping system. for packet handling, a7125 has built-in separated 64-bytes tx/rx fifo (could be extended to 256 bytes) for data buffering and burst transmission, crc for error detection, fec for 1-bit data correction per code word, rssi for clear channel assessment, data whitening for data encryption/decryption, thermal sensor for monitoring relative temperature. those functions are very easy to use while developing a wireless system. all features are integrated in a small qfn 4x4 20 pins package.
a7125’s data rate is up to 2mbps and can be easily programmed to 1mbps or 2 mbps via 3-wire or 4-wire spi bus. for power saving, a7125 supports sleep mode, idle mode, standby mode. for easy-to-use, a7125 has an unique spi command set called strobe command that are used to control a7125’s state machine. based on strobe commands, from power saving, tx delivery, rx receiving, channel monitoring, frequency hopping to auto calibrations, mcu only needs to define a7125’s control registers and send strobe commands via spi bus. in addition, a7125 supports two general purpose
i/o pins, gio1 and gio2, to inform mcu its status so that mcu could use either polling or interrupt scheme to do radio control. therefore, it is very easy to monitor transmission between mcu and a7125 because of its digital interface.
3. feature
small size (qfn 4x4, 20 pins).
support 2400 ~ 2483.5 mhz ism band.
fsk modulation.
programmable data rate to 1mbps or 2mbps.
low current consumption: rx 17ma, tx 15.7ma (at 0dbm output power).
low sleep current (1.5ua).
programmable rf output power -20dbm ~ 3dbm.
very high sensitivity (-90dbm@2mbps, -92dbm@1mbps).
on chip regulator, supports input voltage 2.0 ~ 3.6v.
easy to use
support 3-wire or 4-wire spi.
unique strobe command via spi.
change frequency channel by one register setting.
8-bits digital rssi for clear channel indication.
fast exchange mode during trx role switching.
auto rssi measurement.
auto calibrations.
auto if function.
auto crc check.
auto fec by (7, 4) hamming code (1 bit error correction / code word).
data whitening for encryption and decryption.
separated 64 bytes rx and tx fifo.
easy fifo / segment fifo / fifo extension (up to 256 bytes).
support direct mode with recovery clock output to mcu.
support direct mode with frame sync signal to mcu.
support low cost crystal (6 / 8 /12 / 16mhz).
support low accuracy crystal within ± 50ppm.
support auto frequency compensation.
support crystal sharing, (1 / 2 / 4 / 8mhz) to mcu.
fast settling time synthesizer for frequency hopping system.
built-in thermal sensor for monitoring relative temperature
云端未来：运行方式差异较大！云游戏比本地游戏好在哪？
51单片机GPIO结构框图与工作原理
纳微氮化镓功率芯片进入全新三星Galaxy S22系列45W旅行充电器
区块链能否恢复民意调查投票中的信任
2019世界人工智能大会 | 叠境数字多项创新AI技术首发
A7125-2.4GHZ 2Mbps无线音视频传输Rf IC
准备好让机器人与我们一起走在路上了吗?
超级螺栓究竟牛在哪里？
BOSHIDA 电源模块电源合理应用之输出过载保护
电子标识器已成为了构建智慧管网的核心产品之一
FPGA攻城拔寨，引领视频监控应用潮流
LED植物照明的发展优势及全球研究进程分析
基于单片机和计数器/定时器实现光纤单片机测速系统的设计
威盛王雪红：仍将上网本作为突破点
浅谈3D NAND Flash技术未来的走向及发展趋势
什么移动电源质量好，质量好的移动电源推荐
深度探讨Chiplet与AIGC的技术趋势
Moto G8终于上市了，拥有时尚的设计和三重摄像头
不仅能写诗，还能写歌？
国星光电上半年净利实现2.25亿元，增长46.49%