EVALUATION KIT AVAILABLE MAX2837 2.3GHz to 2.7GHz Wireless Broadband RF Transceiver General Description Features The MAX2837 direct-conversion zero-IF RF transceiver 2.3GHz to 2.7GHz Wideband Operation is designed specifically for 2.3GHz to 2.7GHz wireless Complete RF Transceiver, PA Driver, and Crystal broadband systems. The MAX2837 completely integrates Oscillator all circuitry required to implement the RF transceiver 0dBm Linear OFDM Transmit Power function, providing RF-to-baseband receive path and -70dBr Tx Spectral Emission Mask baseband-to-RF transmit path, VCO, frequency synthe- 2.3dB Rx Noise Figure sizer, crystal oscillator, and baseband/control interface. Tx/Rx I/Q Error and LO Leakage Detection The device includes a fast-settling sigma-delta RF syn- Monolithic Low-Noise VCO with -39dBc thesizer with smaller than 20Hz frequency steps and a Integrated Phase Noise crystal oscillator, which allows the use of a low-cost crys- Programmable Tx I/Q Lowpass tal in place of a TCXO. The transceiver IC also integrates Anti-Aliasing Filter circuits for on-chip DC offset cancellation, I/Q error, and Sigma-Delta Fractional-N PLL with carrier-leakage detection circuits. Only an RF bandpass 20Hz Step Size filter (BPF), crystal, RF switch, PA, and a small number of 45dB Tx Gain-Control Range passive components are needed to form a complete wire- 94dB Receive Gain-Control Range less broadband RF radio solution. 60dB Analog RSSI Instantaneous The MAX2837 completely eliminates the need for an Dynamic Range external SAW filter by implementing on-chip monolithic 4-Wire SPI Digital Interface filters for both the receiver and transmitter. The baseband I/Q Analog Baseband Interface filters along with the Rx and Tx signal paths are optimized Digitally Tuned Crystal Oscillator to meet stringent noise figure and linearity specifica- On-Chip Digital Temperature Sensor Read-Out tions. The device supports up to 2048 FFT OFDM and +2.7V to +3.6V Transceiver Supply implements programmable channel filters for 1.75MHz to Low-Power Shutdown Current 28MHz RF channel bandwidths. The transceiver requires Small 48-Pin Thin QFN Package only 2s Tx-Rx switching time, which includes frequency transient settling. The IC is available in a small, 48-pin (6mm x 6mm x 0.8mm) thin QFN package measuring only 6mm x 6mm x 0.8mm. Applications Ordering Information 802.16-2004 Fixed WiMAX PART TEMP RANGE PIN-PACKAGE Korea Wibro and 802.16e Mobile WiMAX MAX2837ETM+TD -40C to +85C 48 TQFN-EP* Dual Mode WiMAX/802.11b/g Wi-Fi *EP = Exposed pad. Proprietary Wireless Broadband Systems +Denotes a lead(Pb)-free/RoHS-compliant package. 4G/LTE Systems Pin Configuration appears at end of data sheet. Dual Mode is a trademark of Maxim Integrated Products, Inc. WiMAX is a registered certification mark and registered service mark of the WiMAX Forum. 19-0806 Rev 2 7/15MAX2837 2.3GHz to 2.7GHz Wireless Broadband RF Transceiver Absolute Maximum Ratings V , V , V , V , V , V , Continuous Power Dissipation (T = +70C) CCLNA CCTXMX CCTXPAD CCDIG CCCP CCXTAL A V , V , V and V to 48-Pin Thin QFN (derates 37mW/C above +70C) .....2.96W CCVCO CCRXVGA CCRXFL CCRXMX GND ..................................................................-0.3V to +3.9V Operating Temperature Range ........................... -40C to +85C B1B7, TXRF , CS, SCLK, DIN, DOUT, TXBBI , TXBBQ , Junction Temperature ......................................................+150C RXHP, RXBBI , RXBBQ , RSSI, ENABLE, BYPASS, Storage Temperature Range ............................ -65C to +160C CPOUT , CLOCKOUT, XTAL1, XTAL2, RXRF ,RXENABLE, Lead Temperature (soldering, 10s) .................................+260C TXENABLE to GND ............. -0.3V to (Operating V + 0.3V) CC RXBBI , RXBBQ , RSSI, BYPASS, CPOUT , DOUT, CLOCKOUT, PABIAS Short-Circuit Duration ............................................ 10s RF Input Power ..............................................................+10dBm CAUTION ESD SENSITIVE DEVICE 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 the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC Electrical Characteristics (MAX2837 evaluation kit: V = 2.7V to 3.6V, Rx set to the maximum gain CS = high, RXHP = SCLK = DIN = low, RSSI and clock CC output buffer are off, no signal at RF inputs, all RF inputs and outputs terminated into 50, receiver baseband outputs are open 90mV differential I and Q signals applied to I, Q baseband inputs of transmitter in transmit mode, f = 40MHz, registers set to RMS REF recommended settings and corresponding test mode, T = -40C to +85C, unless otherwise noted. Typical values are at V = 2.8V, A CC f = 2.5GHz, and T = +25C, unless otherwise noted.) (Note 1) LO A PARAMETER CONDITIONS MIN TYP MAX UNITS Supply Voltage V 2.7 3.6 V CC Shutdown mode, T = +25C 10 A A Standby mode 35 45 Rx mode 91 110 Supply Current Tx mode, T = +25C 145 170 mA A Rx calibration mode 135 160 Tx calibration mode 110 135 D9:D8 = 00 in A4:A0 = 00100 0.85 1.0 1.20 D9:D8 = 01 in A4:A0 = 00100 1.1 Rx I/Q Output Common-Mode V Voltage D9:D8 = 10 in A4:A0 = 00100 1.2 D9:D8 = 11 in A4:A0 = 00100 1.35 Tx Baseband Input Common- DC-coupled 0.5 1.2 V Mode Voltage Operating Range Tx Baseband Input Bias Current Source current 10 20 A LOGIC INPUTS: ENABLE, TXENABLE, RXENABLE, SCLK, DIN, CS, B7:B1, RXHP Digital Input-Voltage High, V V - 0.4 V IH CC Digital Input-Voltage Low, V 0.4 V IL Digital Input-Current High, I -1 +1 A IH Digital Input-Current Low, I -1 +1 A IL Maxim Integrated 2 www.maximintegrated.com