A7202A

Sub 1GHz 无线通信芯片; ASK Operating range: VDD=2,2~3,0V. T=-40~+85℃.\nEasy to use\nHW control mode (no need MCU for radio control).\nAuto calibration.\nAuto start-up sequence, XtalAuto CalibrationPLL RX.\nRX current 9mA.\nShut down mode current 0,5 uA.\nHigh RX sensitivity – 110 dBm at BER<1E-3 (2.4Kbps, 315/433.92MHz).\nCustomized digital I/O level (2,0 ~ 3,6V) by VIO pin. \nFully integrated VCO, on chip loop filter and PLL synthesizer.\nRF range from 290 MHz to 319 MHz with PLL steps of 848KHz by 13.5732MHz Xtal.\nRF range from 420 MHz to 447 MHz with PLL steps of 848KHz by 13.5732MHz Xtal.\nTwo balanced Image Reject Mixer and Limiter.\nIntegrated IF Filter Bandwidth = 250KHz.\nTunable data filter via external capacitors depending on data rate.\nTunable data slicer via an external capacitor depending on data rate.\nSupport low cost Xtal (13.5732MHz with ± 50ppm stability).\nVery few external components: No need external IF/SAW filters.\nAnalog RSSI output.\n \n;

A7202A is a very easy-to-use CMOS RF Receiver for sub 1GHz license free ISM band (315/434MHz). It is an OOK/ASK single chip RF receiver with high sensitivity receiver (-110dBm @ 2.4Kbps, 315/433.92MHz). This device integrates a double balanced image reject mixer, low IF frequency (424KHz) architecture, IF filter, I/Q limiter with RSSI generation, as well as a fully VCO and PLL synthesizer. A7202A's carrier frequency FRF is determined by the frequency of the reference crystal FXTAL. The integer-N PLL synthesizer ensures that each RF value, ranging from 310 MHz to 315.5 MHz and 430 MHz to 438 MHz with PLL steps of 848KHz, can be achieved. This is done by using a crystal as a reference frequency according to: FRF = FXTAL x N / 32, where N is the PLL feedback divider ratio (N=743 for 315MHz band and N=1023 for 434MHz band, i.e. crystal = 13.5732MHz for 433.92MHz). Dut to AIF (Auto IF) function, user has no need to consider IF offset between TX and RX, but, just use this formula ( FRF = FXTAL x N / 32 ) directly to calculate RX radio frequency.\n\n\n\nFor easy-to-use, A7202A has a special mode called HW control mode. In HW control mode, user just needs to apply pin setting for radio control, i.e. Band =1 for 434MHz and Band = 0 for 315MHz. DF1, DF2, DF3 (data filter pins) and DS (data slicer pin) applying proper capacitors for different data rate application (1K to 10Kbps) to get the best RX sensitivity. Hence, A7202A is very easy to use with a low cost MCU or decoder. Those features are all integrated in a small SSOP 20 pins package.\n\n\n\nFor packet receiving, there is no RX FIFO inside A7202A. MCU (or Decoder) just needs to decode the coming packet (preamble + sync word + payload) from DATA_OUT pin. To get the best RX sensitivity, refer to section 9.6 for recommended preamble format to be 70% high and 30% low for this device.\n\n

Amiccom

AAT7202

121-ChannelBufferforTFTLCD

ADV7202

SimultaneousSamplingVideoRateCodec

GENERALDESCRIPTION TheADV7202isavideoratesamplingcodec. IthasthecapabilityofsamplinguptofiveNTSC/PAL/SECAMvideoI/Psignals.Theresolutiononthefrontenddigitizeris12bits;2bits(12dB)areusedforgainandoffsetadjustment.Thedigitizerhasaconversionrateofupt

ADV7202

SimultaneousSamplingVideoRateCodec

ADV7202

SimultaneousSamplingVideoRateCodec

ADV7202KSTZ

SimultaneousSamplingVideoRateCodec

AJ7202BTVF

PowerRockerSwitches

AJ7202HF

PowerRockerSwitches

AJ7202WF

PowerRockerSwitches

AM7202A

HighDensityFirst-inFrist-out1024x9-BitCMOSMemory