Maker : Maxim Integrated Products
Part No. : MAX2991

  Datasheet PDF : MAX2991.pdf
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Product Information

19-5125; Rev 0; 1/10 www.DataSheet4U.com Power-Line Communications (PLC) Integrated Analog Front-End Transceiver General Description The MAX2991 power-line communication analog frontend (AFE) is a state-of-the-art integrated circuit that delivers high integration and superb performance, while reducing the total system cost. The MAX2991 is the first AFE specifically designed for OFDM (orthogonal frequency division multiplexing) modulated signal transmission over power lines. Operating in the 10kHz to 490kHz band, the programmable filters allow compliance with CENELEC, FCC, and ARIB standards using the same device. The MAX2991 transceiver provides two main paths: transmit (Tx) path and receive (Rx) path. The transmit path injects an OFDM modulated signal into the AC or DC line. The transmit path is composed of a digital IIR filter, digital-to-analog converter (DAC), followed by a lowpass filter, and a preline driver. The receiver path is for the signal enhancement, filtering, and digitization of the received signal. The receiver is composed of a lowpass and a highpass filter, a two-stage automatic gain control (AGC), and an analog-to-digital converter (ADC). The integrated AGC maximizes the dynamic range of the signal up to 60dB, while the lowpass filter removes any out-of-band noise, and selects the desired frequency band. The ADC converts the enhanced and amplified input signal to a digital format. An integrated offset cancellation loop minimizes the DC offset. The MAX2991, along with the MAX2990 PLC baseband modem, delivers the most cost-effective data communication solution over power-line networks in the market. The MAX2991 is specified over the -40NC to +85NC temperature range and is available in a 48-pin LQFP package. Baseband S Integrated Band Select Filter, AGC, and 10-Bit Features S Optimized to Operate with the MAX2990 PLC MAX2991 ADC for Rx Path S Integrated Wave-Shaping Filter, Programmable Predriver Gain, and 10-Bit DAC for Tx Path S Variable Sampling Rate Up to 1.2Msps S Built-In 60dB Dynamic Range AGC and DC Offset Cancellation S Programmable Filters Operate in the CENELEC, FCC, and ARIB Frequency Bands S Single 3.3V Power Supply S 70mA Typical Supply Current (Half-Duplex Mode) S Extended Operating Temperature Range Applications Automatic Meter Reading Home Automation Heating Ventilation and Air Conditioning (HVAC) Building Automation Industrial Automation Lighting Control Sensor Control and Data Acquisition (SCADA) Remote Monitoring and Control Security Systems/Keyless Entry Smart Grid Ordering Information PART MAX2991ECM+ TEMP RANGE -40NC to +85NC PIN-PACKAGE 48 LQFP +Denotes a lead(Pb)-free/RoHS-compliant package. Typical Application Circuit MAX2990 MAX2991 HOST APPLICATION µC MCU INTERFACE PHY Tx BLOCK AFE Rx BLOCK LINE DRIVER LINE COUPLER AC POWER LINE _______________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. www.DataSheet4U.com Power-Line Communications (PLC) Integrated Analog Front-End Transceiver MAX2991 ABSOLUTE MAXIMUM RATINGS VDD to GND..........................................................-0.3V to +3.9V All Other Inputs/Outputs.......................................-0.3V to +3.9V Continuous Power Dissipation (TA = +70NC) 48-Pin LQFP (derate 25mW/NC above +70NC) ..........1535mW Operating Temperature Range .......................... -40NC to +85NC Junction Temperature .....................................................+150NC Storage Temperature Range .......................... -60NC to +150NC Lead Temperature (soldering, 10s) ................................+300NC Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in th...

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