MAX2851ITK+【PDF 1/37 页】TRANSMITTER MIMO 5GHZ 5CH 68TQFN

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Sheet目录473

[1页]2页 3页 4页 5页

19-5121; Rev 1; 3/10

EVALUA

TION KIT

AVA ILABLE

5GHz, 5-Channel MIMO Receiver

General Description

The MAX2851 is a single-chip, 5-channel RF receiver IC

designed for 5GHz wireless HDMI? applications. The

Features

S 5GHz, 5x MIMO Downlink Receivers, Single-Uplink

IEEE 802.11a Transmitter

IC includes all circuitry required to implement the com-

plete 5-channel MIMO RF receiver function and crystal

oscillator, providing a fully integrated receive path, VCO,

frequency synthesis, and baseband/control interface. It

includes a fast-settling sigma-delta RF fractional synthe-

sizer with 76Hz frequency programming step size. The

IC also integrates on-chip I/Q amplitude and phase-error

calibration circuits. The receiver includes both an in-

channel RSSI and also an RF RSSI.

On-chip monolithic filters are included for receiver I/Q

baseband signal channel selection, for supporting both

20MHz and 40MHz RF channels. The baseband filter-

ing and Rx signal paths are optimized to meet stringent

WHDI requirements. The downconverter local oscillator

is coherent among all the receiver channels.

The reverse-link control channel uses an on-chip 5GHz

OFDM transmitter. It shares the RF synthesizer and LO

generation circuit with the MIMO receivers. Dynamic

on/off control of the external PA is implemented with

programmable precision voltage. An analog mux routes

external PA power-detect voltage to the RSSI pin.

The MIMO receiver chip is housed in a small 68-pin

TQFN leadless plastic package with exposed paddle.

Applications

5GHz Wireless HDMI (WHDI?)

5GHz FDD Backhaul and WiMAX?

5GHz MIMO Receiver Up to Five Spatial Streams

5GHz Beam Steering Receiver

4900MHz to 5900MHz Frequency Range

Coherent LO Among Receivers

4.5dB Rx Noise Figure

70dB Rx Gain Control Range with 2dB Step Size,

Digitally Controlled

60dB Dynamic Range Receiver RSSI

RF Wideband Receiver RSSI

Programmable 20MHz/40MHz Rx I/Q Lowpass

Channel Filters

-5dBm Transmit Power (54Mbps OFDM)

31dB Tx Gain Control Range with 0.5dB Step Size,

Digitally Controlled

Tx/Rx I/Q Error and LO Leakage Detection and

Adjustment

Programmable 20MHz/40MHz Tx I/Q Lowpass

Anti-Aliasing Filter

Analog Mux for PA Power Detect

PA On/Off Control

Sigma-Delta Fractional-N PLL with 76Hz

Resolution

Monolithic Low-Noise VCO with -35dBc Integrated

Phase Noise

4-Wire SPI K Digital Interface

I/Q Analog Baseband Interface

Digital Tx/Rx Mode Control

On-Chip Digital Temperature Sensor Readout

Complete Baseband Interface

Digital Tx/Rx Mode Control

+2.7V to +3.6V Supply Voltage

Small 68-Pin TQFN Package (10mm x 10mm)

Ordering Information

PART

MAX2851ITK+

TEMP RANGE

-25 N C to +85 N C

PIN-PACKAGE

68 TQFN-EP*

+ Denotes a lead(Pb)-free/RoHS-compliant package.

* EP = Exposed paddle.

HDMI is a trademark of HDMI Licensing, LLC.

WHDI is a trademark of WHDI Special Interest Group.

WiMAX is a trademark of the WiMAX Forum.

Typical Operating Circuit appears at end of data sheet.

SPI is a trademark of Motorola, Inc.

_______________________________________________________________ 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.

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