19-3218; Rev 1; 3/08 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver The MAX2839 direct conversion, zero-IF, RF transceiver is designed specifically for 2GHz 802.16e MIMO mobile WiMAX systems. The device incorporates one transmitter and two receivers, with >40dB isolation between each receiver. The MAX2839 completely integrates all circuitry required to implement the RF transceiver function, providing RF to baseband receive path, and baseband to RF transmit path, VCO, frequency synthesizer, crystal oscillator, and baseband/control interface. The device includes a fast-settling sigma-delta RF synthesizer with smaller than 40Hz frequency steps and a crystal oscillator that allows the use of a low-cost crystal in place of a TCXO. The transceiver IC also integrates circuits for on-chip DC-offset cancellation, I/Q error, and carrier leakage detection circuits. An internal transmit to receive loopback mode allows for receiver I/Q imbalance calibration. The local oscillator I/Q quadrature phase error can be digitally corrected in approximately 0.125° steps. Only an RF bandpass filter (BPF), crystal, RF switch, PA, and a small number of passive components are needed to form a complete wireless broadband RF radio solution. The MAX2839 completely eliminates the need for an external SAW filter by implementing on-chip programmable monolithic filters for both the receiver and transmitter, for all 2GHz and 802.16e profiles and WIBRO. The baseband filters along with the Rx and Tx signal paths are optimized to meet the stringent noise figure and linearity specifications. The device supports up to 2048 FFT OFDM and implements programmable channel filters for 3.5MHz to 20MHz RF channel bandwidths. The transceiver requires only 2µs Tx-Rx switching time. The IC is available in a small 56-pin TQFN package measuring 8mm x 8mm x 0.8mm. Applications Features ♦ 2.3GHz to 2.7GHz Wideband Operation ♦ Dual Receivers for MIMO, Single Transmitter ♦ Complete RF Transceiver, PA Driver, and Crystal Oscillator 2.3dB Rx Noise Figure on Each Receiver -35dB Rx EVM for 64QAM Signal 0dBm Linear OFDM Transmit Power (64QAM) -70dBr Tx Spectral Emission Mask -35dBc LO Leakage Automatic Rx DC Offset Correction Monolithic Low-Noise VCO with -39dBc Integrated Phase Noise Programmable Rx I/Q Lowpass Channel Filters Programmable Tx I/Q Lowpass Anti-Aliasing Filters Sigma-Delta Fractional-N PLL with < 40Hz Step 62dB Tx Gain Control Range with 1dB Step Size, Digitally Controlled 95dB Rx Gain Control Range with 1dB Step Size, Digitally Controlled 60dB Analog RSSI Instantaneous Dynamic Range 4-Wire SPI™ Digital Interface I/Q Analog Baseband Interface Digital Tx/Rx Mode Control Digitally Tuned Crystal Oscillator On-Chip Digital Temperature Sensor Readout ♦ +2.7V to +3.6V Transceiver Supply ♦ Low-Power Shutdown Current ♦ Small, 56-Pin TQFN Package (8mm x 8mm x 0.8mm) 802.16e Mobile WiMAX™ Systems Ordering Information Korean WIBRO Systems Proprietary Wireless Broadband Systems 802.11g or n WLAN with MRC or MIMO Down Link PART TEMP RANGE PINPACKAGE MAX2839ETN+TD -40°C to +85°C 56 TQFN-EP* PKG CODE T5688+2 +Denotes a lead-free package. T = Tape and reel. *EP = Exposed paddle. D = Dry pack. WiMAX is a trademark of the WiMAX Forum. SPI is a trademark of Motorola, Inc. Pin Configuration and Block Diagram/Typical Operating Circuit appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products 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. 1 MAX2839 General Description MAX2839 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver ABSOLUTE MAXIMUM RATINGS VCC_ Pins to GND..................................................-0.3V to +3.6V RF Inputs: RXINA+, RXINA-, RXINB+, RXINB- to GND .............................................AC-Coupled Only RF Outputs: TXOUT+, TXOUT- to GND.................-0.3V to +3.6V Analog Inputs: TXBBI+, TXBBI-, TXBBQ+, TXBBQ- to GND..................................................-0.3V to +3.6V Analog Input: REFCLK, XTAL1 .........................-0.3V to +3.6VP-P Analog Outputs: RXBBIA+, RXBBIA-, RXBBQA+, RXBBQA-, RXBBIB+, RXBBIB-, RXBBQB+, RXBBQB-, CPOUT+, CPOUT-, PABIAS, RSSI to GND.........................-0.3V to +3.6V Digital Inputs: RXTX, CS, SCLK, DIN, B0–B7, LOAD, RXHP, ENABLE to GND .............-0.3V to +3.6V Digital Outputs: DOUT, CLKOUT ..........................-0.3V to +3.6V Bias Voltages: VCOBYP .......................................-0.3V to +3.6V Short-Circuit Duration on All Output Pins ...............................10s RF Input Power: All RXIN_ ..............................................+15dBm RF Output Differential Load VSWR: All TXOUT .......................6:1 Continuous Power Dissipation (TA = +70°C) 56-Pin TQFN (derate 31.3mW/°C above +70°C) ......2500mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +160°C Lead Temperature (soldering, 10s) .................................+300°C 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. CAUTION! ESD SENSITIVE DEVICE DC ELECTRICAL CHARACTERISTICS TABLE (MAX2839 Evaluation Kit, VCC_ = 2.7V to 3.6V, TA = -40°C to +85°C, Rx set to the maximum gain. RXTX set according to operating mode, ENABLE = CS = high, SCLK = DIN = low, no input signal at RF inputs, all RF inputs and outputs terminated into 50Ω. 90mVRMS differential I and Q signals (1MHz) applied to I, Q baseband inputs of transmitter in transmit mode, all registers set to recommended settings and corresponding test mode, unless otherwise noted. Typical values are at VCC_ = 2.8V, fLO = 2.5GHz and TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER Supply Voltage CONDITIONS VCC_ MIN 2.7 Shutdown mode, TA = +25°C Tx mode 32 45 95 Both receivers ON 117 145 16 QAM 116 Tx calibration mode D9:D8 = 00 in A4:A0 = 00100 0.85 140 170 153 195 102 135 1.0 1.2 D9:D8 = 01 in A4:A0 = 00100 1.1 D9:D8 = 10 in A4:A0 = 00100 1.2 D9:D8 = 11 in A4:A0 = 00100 1.35 Tx Baseband Input CommonMode Voltage Operating Range DC-coupled Tx Baseband Input Bias Current Source current 0.5 10 V 3.5 76 64 QAM (Note 4) UNITS µA One receiver ON Rx calibration mode, both receivers ON Rx I/Q Output Common-Mode Voltage 3.6 1.4 Standby mode Rx mode MAX 2 Clock-out only mode Supply Current TYP mA V 1.2 V 20 µA LOGIC INPUTS: RXTX, ENABLE, SCLK, DIN, CS, B7:B0, LOAD, RXHP Digital Input Voltage High, VIH VCC 0.4 Digital Input Voltage Low, VIL Digital Input Current High, IIH 2 -1 _______________________________________________________________________________________ V 0.4 V +1 µA 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver (MAX2839 Evaluation Kit, VCC_ = 2.7V to 3.6V, TA = -40°C to +85°C, Rx set to the maximum gain. RXTX set according to operating mode, ENABLE = CS = high, SCLK = DIN = low, no input signal at RF inputs, all RF inputs and outputs terminated into 50Ω. 90mVRMS differential I and Q signals (1MHz) applied to I, Q baseband inputs of transmitter in transmit mode, all registers set to recommended settings and corresponding test mode, unless otherwise noted. Typical values are at VCC_ = 2.8V, fLO = 2.5GHz and TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER CONDITIONS Digital Input Current Low, IIL MIN TYP -1 MAX UNITS +1 µA LOGIC OUTPUTS: DOUT, CLKOUT Digital Output Voltage High, VOH Sourcing 100µA Digital Output Voltage Low, VOL Sinking 100µA VCC 0.4 V 0.4 V AC ELECTRICAL CHARACTERISTICS TABLE—Rx MODE (MAX2839 Evaluation Kit, VCC_ = 2.8V, TA = +25°C, fRF = 2.4999GHz, fLO = 2.5GHz; baseband output signal frequency = 100kHz, fREF = 40MHz, ENABLE = RXTX = CS = high, SCLK = DIN = low, with power matching for the differential RF pins using the typical applications circuit and registers set to default settings and corresponding test mode, unless otherwise noted. Lowpass filter is set to 10MHz RF channel BW. Unmodulated single tone RF input signal is used with specifications which normally apply over the entire operating conditions, unless otherwise indicated.) (Note 1) PARAMETER CONDITIONS MIN TYP MAX UNITS 2.7 GHz RF INPUT TO I, Q BASEBAND-LOADED OUTPUT RF Input Frequency Range Peak-to-Peak Gain Variation over RF Input Frequency Range 2.3 Tested at band edges and band center RF Input Return Loss All LNA settings Total Voltage Gain TA = -40°C to +85°C RF Gain Steps Maximum gain, B7:B0 = 0000000 90 Minimum gain, B7:B0 = 1111111 0.8 dB 12 dB 99 5 From max RF gain to max RF gain - 8dB 8 From max RF gain to max RF gain - 16dB 16 From max RF gain to max RF gain - 32dB 32 Any RF or baseband gain change; gain settling to within ±1dB of steady state; RXHP = 1 200 Any RF or baseband gain change; gain settling to within ±0.1dB of steady state; RXHP = 1 2000 13 dB Gain Change Settling Time Baseband Gain Range ns From maximum baseband gain (B5:B0 = 000000) to minimum gain (B5:B0 = 111111), TA = -40°C to +85°C Baseband Gain Minimum Step Size DSB Noise Figure dB 58 63 1 Voltage gain = 65dB with max RF gain (B7:B6 = 00) 2.3 Voltage gain = 50dB with max RF gain - 8dB (B7:B6 = 01) 5.5 Voltage gain = 45dB with max RF gain - 16dB (B7:B6 = 10) 13 Voltage gain = 15dB with max RF gain - 32dB (B7:B6 = 11) 27 66 dB dB dB _______________________________________________________________________________________ 3 MAX2839 DC ELECTRICAL CHARACTERISTICS TABLE (continued) MAX2839 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver AC ELECTRICAL CHARACTERISTICS TABLE—Rx MODE (continued) (MAX2839 Evaluation Kit, VCC_ = 2.8V, TA = +25°C, fRF = 2.4999GHz, fLO = 2.5GHz; baseband output signal frequency = 100kHz, fREF = 40MHz, ENABLE = RXTX = CS = high, SCLK = DIN = low, with power matching for the differential RF pins using the typical applications circuit and registers set to default settings and corresponding test mode, unless otherwise noted. Lowpass filter is set to 10MHz RF channel BW. Unmodulated single tone RF input signal is used with specifications which normally apply over the entire operating conditions, unless otherwise indicated.) (Note 1) PARAMETER CONDITIONS MIN TYP AGC set for -65dBm wanted signal, max RF gain (B7:B6 = 00) -13 AGC set for -55dBm wanted signal, max RF gain - 8dB (B7:B6 = 01) -9 AGC set for -40dBm wanted signal, max RF gain - 16dB (B7:B6 = 10) -7 AGC set for -30dBm wanted signal, max RF gain - 32dB (B7:B6 = 11) +16 MAX UNITS dBm Out-of-Band Input IP3 (Note 2) Max RF gain (B7:B6 = 00) -37 Max RF gain - 8dB (B7:B6 = 01) -29 Max RF gain - 16dB (B7:B6 = 01) -21 Max RF gain - 32dB (B7:B6 = 11) -4 Maximum Output Signal Level Over passband frequency range; at any gain setting; 1dB compression point 1.5 VP-P I/Q Gain Imbalance 100kHz IQ baseband output; 1 σ variation 0.1 dB 0.125 Degrees Inband Input P-1dB I/Q Phase Error 100kHz IQ baseband output; 1 σ variation Rx I/Q Output Load Impedance (R || C) Minimum differential resistance dBm 10 kΩ Maximum differential capacitance 5 pF +5 dB Loopback Gain (for Receiver I/Q Calibration) Transmitter I/Q input to receiver I/Q output; transmitter B6:B1 = 000011, receiver B5:B0 = 101000 programmed through SPI I/Q Output DC Droop After switching RXHP to 0; average over 1µs after any gain change, or 2µs after receive enabled with 100Hz AC-coupling 1 V/s I/Q Static DC Offset No RF input signal; measure at 3µs after receive enable; RXHP = 1 for 0 to 2µs and set to 0 after 2µs, 1 σ variation 2 mV Isolation Between Rx Channels A and B Any RF gain settings 40 dB At 15MHz 57 At 20MHz 75 At > 40MHz 90 RXHP = 1 (used before AGC completion) 650 -5 0 RECEIVER BASEBAND FILTERS Baseband Filter Rejection Baseband Highpass Filter Corner Frequency 4 RXHP = 0 (used after AGC completion) address A4:A0 = 01110 D5:D4 = 00 0.1 D5:D4 = 01 1 D5:D4 = 10 30 D5:D4 = 11 100 _______________________________________________________________________________________ dB kHz 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver (MAX2839 Evaluation Kit, VCC_ = 2.8V, TA = +25°C, fRF = 2.4999GHz, fLO = 2.5GHz; baseband output signal frequency = 100kHz, fREF = 40MHz, ENABLE = RXTX = CS = high, SCLK = DIN = low, with power matching for the differential RF pins using the typical applications circuit and registers set to default settings and corresponding test mode, unless otherwise noted. Lowpass filter is set to 10MHz RF channel BW. Unmodulated single tone RF input signal is used with specifications which normally apply over the entire operating conditions, unless otherwise indicated.) (Note 1) PARAMETER RF Channel BW Supported by Baseband Filter Baseband Gain Ripple Baseband Group Delay Ripple CONDITIONS MIN TYP A4:A0 = 00100 serial bits D9:D6 = 0000 1.75 A4:A0 = 00100 serial bits D9:D6 = 0001 2.25 A4:A0 = 00100 serial bits D9:D6 = 0010 3.5 A4:A0 = 00100 serial bits D9:D6 = 0011 5.0 A4:A0 = 00100 serial bits D9:D6 = 0100 5.5 A4:A0 = 00100 serial bits D9:D6 = 0101 6.0 A4:A0 = 00100 serial bits D9:D6 = 0110 7.0 A4:A0 = 00100 serial bits D9:D6 = 0111 8.0 A4:A0 = 00100 serial bits D9:D6 = 1000 9.0 A4:A0 = 00100 serial bits D9:D6 = 1001 10.0 A4:A0 = 00100 serial bits D9:D6 = 1010 12.0 A4:A0 = 00100 serial bits D9:D6 = 1011 14.0 A4:A0 = 00100 serial bits D9:D6 = 1100 15.0 A4:A0 = 00100 serial bits D9:D6 = 1101 20.0 A4:A0 = 00100 serial bits D9:D6 = 1110 24.0 A4:A0 = 00100 serial bits D9:D6 = 1111 28.0 0 to 2.3MHz for BW = 5MHz 1.3 0 to 4.6MHz for BW = 10MHz 1.3 0 to 2.3MHz for BW = 5MHz 90 0 to 4.6MHz for BW = 10MHz 50 MAX UNITS MHz dBP-P nsP-P Baseband Filter Rejection for 5MHz RF Channel BW At 3.3MHz 6 At > 21MHz 85 Baseband Filter Rejection for 10MHz RF Channel BW At 6.7MHz 6 At > 41.6MHz 85 RSSI Minimum Output Voltage RLOAD ≥ 10kΩ 0.4 RSSI Maximum Output Voltage RLOAD ≥ 10kΩ 2.2 V 30 mV/dB dB dB RSSI RSSI Slope RSSI Output Settling Time To within 3dB of steady state +32dB signal step 200 -32dB signal step 800 V ns _______________________________________________________________________________________ 5 MAX2839 AC ELECTRICAL CHARACTERISTICS TABLE—Rx MODE (continued) MAX2839 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver AC ELECTRICAL CHARACTERISTICS TABLE—Tx MODE (MAX2839 Evaluation Kit, VCC_ = 2.8V, TA = +25°C, fRF = 2.501GHz, fLO = 2.5GHz, fREF = 40MHz, ENABLE = CS = high, RXTX = SCLK = DIN = low, with power matching for the differential RF pins using the typical applications and registers set to default settings and corresponding test mode, unless otherwise noted. Lowpass filter is set to 10MHz RF channel BW. 1MHz 90mVRMS cosine and sine signals applied to I/Q baseband inputs of transmitter (differential DC coupled)). (Note 1) PARAMETER CONDITIONS MIN TYP MAX UNITS 2.7 GHz Tx BASEBAND I/Q INPUTS TO RF OUTPUTS RF Output Frequency Range 2.3 Peak-to-Peak Peak Gain Variation over RF Band Output optimally matched over 200MHz RF BW 2.5 dB Total Voltage Gain Max gain -3dB; at unbalanced 50Ω matched output 12 dB Max Output Power over 64 QAM OFDM signal conforming to spectral emission Frequency for Any Given 200MHz mask and -36dB EVM after I/Q imbalance calibration by Band modem (Note 3) 0 dBm RF Output Return Loss Given 200MHz band in the 2.3GHz to 2.7GHz range, for which the matching has been optimized 8 dB RF Gain Control Range B6:B1 = 000000 to 111111 62 dB Unwanted Sideband Suppression Without calibration by modem, and excludes modem I/Q imbalance; POUT = 0dBm 45 dBc B1 1 B2 2 B3 4 B4 8 B5 16 B6 32 Relative to 0dBm output power; without calibration by modern -35 dBc Differential resistance 100 kΩ pF RF Gain Control Binary Weights Carrier Leakage Tx I/Q Input Impedance (R||C) Differential capacitance 0.5 Baseband Frequency Response for 5MHz RF Channel BW 0 to 2.3MHz 0.2 At > 25MHz 80 Baseband Frequency Response for 10MHz RF Channel BW 0 to 4.6MHz 0.2 At > 41.6MHz 80 0 to 2.3MHz (BW = 5MHz) 20 0 to 4.6MHz (BW = 10MHz) 12 Baseband Group Delay Ripple 6 _______________________________________________________________________________________ dB dB ns 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver (MAX2839 Evaluation Kit, VCC_ = 2.8V, TA = +25°C, fLO = 2.5GHz, fREF = 40MHz, CS = high, SCLK = DIN = low, PLL 3dB loop noise bandwidth = 120kHz. VCO and RF synthesis enabled, unless otherwise noted.) (Note 1) PARAMETER CONDITIONS RF Channel Center Frequency Range MIN TYP 2.3 Channel Center Frequency Programming Minimum Step Size Reference Frequency Range 11 40 Charge-Pump Output Current Close-In Spur Level 80 0.8 MHz VP-P Resistance (REFCLK pin) 10 k Capacitance (REFCLK pin) 1 pF Programmable Reference Divider Values Closed-Loop Integrated Phase Noise GHz MHz 40 Reference Frequency Input Impedance (R||C) 2.7 Hz 11 AC-coupled to REFCLK pin UNITS 39 Charge-Pump Comparison Frequency Reference Frequency Input Levels MAX 1 Integrate phase noise from 200Hz to 5MHz; chargepump comparison frequency = 40MHz 2 4 -39 dBc On each differential side 0.8 mA fOFFSET = 0 to 1.8MHz -40 fOFFSET = 1.8MHz to 7MHz -70 fOFFSET > 7MHz -80 Reference Spur Level dBc -85 dBc Turnaround LO Frequency Error Relative to steady state; measured 35μs after Tx-Rx or Rx-Tx switching instant, and 4μs after any receiver gain changes ±50 Hz Temperature Range Over Which VCO Maintains Lock Relative to the ambient temperature TA, as long as the VCO lock temperature range is within operating temperature range TA ±40 °C Reference Output Clock Divider Values 2 Output Clock Drive Level 20MHz output, 1x drive setting 1.5 VP-P Output Clock Load Impedance (R||C) Resistance 10 k Capacitance 2 pF _______________________________________________________________________________________ 7 MAX2839 AC ELECTRICAL CHARACTERISTICS TABLE—FREQUENCY SYNTHESIS MAX2839 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver AC ELECTRICAL CHARACTERISTICS TABLE—MISCELLANEOUS BLOCKS (MAX2839 Evaluation Kit, VCC = 2.8V, fREF = 40MHz, CS = high, SCLK = DIN = low, and TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER CONDITIONS MIN TYP MAX UNITS PA BIAS DAC: VOLTAGE MODE Output High level 10mA source current VCC - 0.1 V Output Low level 100μA sink current 0.1 V Excludes programmable delay of 0 to 7μs in steps of 0.5μs Turn-On Time 200 ns Maximum capacitance, A4:A0 = 11000, D6:D0 = 1111111 15.5 CRYSTAL OSCILLATOR On-Chip Tuning Capacitance Range pF Minimum capacitance, A4:A0 = 11000, D6:D0 = 0000000 0.5 On-Chip Tuning Capacitance Step Size 0.12 pF ON-CHIP TEMPERATURE SENSOR Digital Output Code Readout at DOUT pin through SPI A4:A0 = 01011, D4:D0 TA = +25°C 01111 TA = +85°C 11101 TA = -40°C 00001 AC ELECTRICAL CHARACTERISTICS TABLE—TIMING (MAX2839 Evaluation Kit, VCC_ = 2.8V, fLO = 2.5GHz, fREF = 40MHz, CS = high, SCLK = DIN = low, 3dB PLL noise bandwidth = 120kHz, and TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SYSTEM TIMING Turnaround Time Measured from Tx or Rx enable edge; signal settling to within 2dB of steady state Rx to Tx 2 Tx to Rx, RXHP = 1 2 µs Tx Turn-On Time (from Standby Mode) Measured from Tx-enable edge; signal settling to within 2dB of steady state Tx Turn-Off Time (to Standby Mode) From Tx-disable edge Rx Turn-On Time (from Standby Mode) Measured from Rx-enable edge; signal settling to within 2dB of steady state Rx Turn-Off Time (to Standby Mode) From Rx-disable edge 2 µs 0.1 µs 2 µs 0.1 µs TRANSMITTER AND RECEIVER PARALLEL GAIN CONTROL LOAD Rising Edge Setup Time B7:B0 stable to LOAD rising edge 10 ns LOAD Rising Edge Hold Time LOAD rising edge to B7:B0 stable 10 ns 8 _______________________________________________________________________________________ 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver (MAX2839 Evaluation Kit, VCC_ = 2.8V, fLO = 2.5GHz, fREF = 40MHz, CS = high, SCLK = DIN = low, 3dB PLL noise bandwidth = 120kHz, and TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS LOAD Falling Edge Setup Time B7:B0 stable to LOAD falling edge 10 ns LOAD Falling Edge Hold Time LOAD falling edge to B7:B0 stable 10 ns LOAD Rise and Fall Time Between 10% and 90% of static levels 100 ns 4-WIRE SERIAL PARALLEL INTERFACE TIMING (see Figure 1) SCLK Rising Edge to CS Falling Edge Wait Time tCSO 6 ns Falling Edge of CS to Rising Edge of First SCLK Time tCSS 6 ns DIN to SCLK Setup Time tDS 6 ns DIN to SCLK Hold Time tDH 6 ns SCLK Pulse-Width High tCH 6 ns SCLK Pulse-Width Low tCL 6 ns Last Rising Edge of SCLK to Rising Edge of CS or Clock to Load Enable Setup Time tCSH 6 ns CS High Pulse Width tCSW 20 ns Time Between Rising Edge of CS and the Next Rising Edge of SCLK tCS1 6 ns Clock Frequency fCLK 45 MHz Rise Time tR 0.1/fCLK ns Fall Time tF 0.1/fCLK ns SCLK Falling Edge to Valid DOUT tD 12.5 ns Note 1: Min/max limits are production tested at TA = +85°C. Min/max limits at TA = -40°C and TA = +25°C are guaranteed by design and characterization. The power-on register settings are not production tested. Load register setting 500ns after VCC is applied. Note 2: Two tones at +20MHz and +39MHz offset with -35dBm/tone. Measure IM3 at 1MHz. Note 3: Gain adjusted over max gain and max gain -3dB. Optimally matched over given 200MHz band. Note 4: Tx mode supply current is specified for 64 QAM while achieving the Tx output spectrum mask shown in the Typical Operating Characteristics. The supply current can be reduced for 16 QAM signal by adjusting the Tx bias settings through the SPI. _______________________________________________________________________________________ 9 MAX2839 AC ELECTRICAL CHARACTERISTICS TABLE—TIMING (continued) Typical Operating Characteristics (VCC = 2.8V, TA = +25°C, fLO = 2.5GHz, fREF = 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω unbalanced output of balun, using the MAX2839 Evalutation Kit.) TA = -40°C 120 110 TA = +25°C TA = -40°C 100 3.0 3.3 SUPPLY VOLTAGE (V) 2.7 3.6 103 MAX2839 toc04 LNA = MAX 100 TA = -40°C MAX2839 toc03 9 60 99 TA = +25°C 80 LNA = MAX 40 97 LNA = MAX - 32dB LNA = MAX - 16dB 50 TA = +85°C 40 LNA = MAX - 32dB 0 95 2300 2380 2460 2540 FREQUENCY (MHz) 2620 2700 2300 2380 2460 2540 FREQUENCY (MHz) 2620 9 18 27 36 45 BASEBAND VGA CODE RX ISOLATION vs. LNA GAIN SETTING 50 MAX2839 toc07 LNA = MAX - 8dB RECEIVER ISOLATION (dB) 1.2 OUTPUT V1dB (VRMS) 0 2700 RX OUTPUT V1dB vs. GAIN SETTING 1.6 0.8 0.4 LNA = MAX - 32dB 45 40 LNA = MAX - 16dB LNA = MAX 35 30 0 0 9 18 27 36 45 BASEBAND VGA CODE 54 63 LNA = MAX - 8dB VOLTAGE GAIN (dB) GAIN (dB) LNA = MAX - 16dB 70 54 120 LNA = MAX - 8dB 80 18 27 36 45 BASEBAND VGA CODE RX VOLTAGE GAIN vs. BASEBAND GAIN SETTING 101 90 10 LNA = MAX 0 3.6 RX VOLTAGE GAIN vs. FREQUENCY (MAXIMUM LNA GAIN) RX VOLTAGE GAIN vs. FREQUENCY 110 3.0 3.3 SUPPLY VOLTAGE (V) MAX2939 toc05 2.7 LNA = MAX - 8dB 0 80 60 LNA = MAX - 16dB 20 10 90 65 LNA = MAX - 32dB 30 MAX2839 toc06 TA = +25°C 40 MAX2839 toc08 75 70 130 NOISE FIGURE (dB) 80 50 MAX2839 toc02 TA = +85°C TA = +85°C SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) 85 140 MAX2839 toc01 90 NOISE FIGURE vs. BASEBAND GAIN SETTING DUAL RX SUPPLY CURRENT vs. SUPPLY VOLTAGE SINGLE RX SUPPLY CURRENT vs. SUPPLY VOLTAGE GAIN (dB) MAX2839 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver 63 -35 -25 -15 -5 LNA GAIN SETTING (dB) ______________________________________________________________________________________ 5 54 63 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver RX EVM vs. VOUT (CHANNEL BANDWIDTH = 10MHz, 64 QAM FUSC) RX EVM vs. PIN (CHANNEL BANDWIDTH = 10MHz, 64 QAM FUSC) 18 12 MAX2839 toc10 LNA = MAX LNA = MAX - 8dB - 16dB 20 MAX2839 toc09 22 LNA = MAX PIN = -50dBm 16 EVM (%) EVM (%) 8 LNA = MAX - 32dB 14 12 10 8 4 6 4 0 LNA = MAX 0 -30 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 PIN (dBm) WiMAX EVM vs. OFDM JAMMER (10MHz CHANNEL BANDWIDTH, 64 QAM FUSC) PWANTED = PSENSITIVITY + 3dB = -70.3dBm AT ANTENNA (INCLUDING 4dB FRONT-END LOSS). EVM AT PSENSITIVITY = 6.37%, WITHOUT JAMMER. 12 fOFFSET =10MHz -30 -40 -50 10 -10 -6 -60 -70 8 (dB) EVM (%) -22 -18 -14 VOUT (dBVRMS) RX EMISSION SPECTRUM AT LNA INPUT (TX OFF, LNA GAIN = MAX) MAX2839 toc11 14 -26 MAX2839 toc12 2 -80 6 -90 4 -100 -110 fOFFSET = 20MHz 2 -120 -130 0 -70 -60 -50 -40 -30 PJAMMER AT ANTENNA (dBm) -20 0 26.5G FREQUENCY (Hz) ______________________________________________________________________________________ 11 MAX2839 Typical Operating Characteristics (continued) (VCC = 2.8V, TA = +25°C, fLO = 2.5GHz, fREF = 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω unbalanced output of balun, using the MAX2839 Evalutation Kit.) Typical Operating Characteristics (continued) (VCC = 2.8V, TA = +25°C, fLO = 2.5GHz, fREF = 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω unbalanced output of balun, using the MAX2839 Evalutation Kit.) RX B INPUT DIFFERENTIAL IMPEDANCE vs. FREQUENCY MAX2839 toc13 35.40 MAX2839 toc14 34.80 -69.0 -66.0 -68.0 -73.0 IMAGINARY 34.80 -77.0 34.50 -81.0 REAL 34.20 -85.0 IMAGINARY 34.60 REAL COMPONENT (Ω) REAL COMPONENT (Ω) 35.10 IMAGINARY COMPONENT (Ω) 34.70 -70.0 34.50 -72.0 34.40 -74.0 34.30 -76.0 34.20 -78.0 34.10 -80.0 -82.0 34.00 33.90 33.90 33.80 -89.0 2,4 2.5 2.6 -86.0 2.3 2.7 2.4 2.5 FREQUENCY (GHz) FREQUENCY (GHz) RX INPUT RETURN LOSS vs. FREQUENCY RSSI VOLTAGE vs. INPUT POWER 2.5 MAX2839 toc15 0 LNA = MAX - 32dB -10 LNA = MAX 2.0 -20 RSSI VOLTAGE (V) LNA = MAX - 8dB LNA = MAX - 8dB -30 LNA = MAX - 16dB -40 -50 1.5 1.0 LNA = MAX LNA = MAX - 16dB 0.5 -60 LNA = MAX - 32dB -70 2300 2400 2500 2600 FREQUENCY (MHz) 2700 0 -110 -80 -50 PIN (dBm) -20 RX RSSI STEP RESPONSE (-32dB SIGNAL STEP) RX RSSI STEP RESPONSE (+32dB SIGNAL STEP) MAX2839 toc18 MAX2839 toc17 3V 3V LNA GAIN CONTROL LNA GAIN CONTROL 0V 0V 1.45V 1.45V RSSI OUTPUT RSSI 0.45V 0.45V 200ns/div 12 2.7 2.6 MAX2839 toc16 2.3 -84.0 REAL 200ns/div ______________________________________________________________________________________ 10 IMAGIANRY COMPONENT (Ω) RX A INPUT DIFFERENTIAL IMPEDANCE vs. FREQUENCY RX INPUT RETURN LOSS (dB) MAX2839 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver RX LPF GROUP DELAY vs. FREQUENCY MAX2839 toc21 MAX2839 toc20 MAX2839 toc19 350 CHANNEL BW = 5MHz 300 LPF GROUP DELAY (ns) RX DC OFFSET SETTLING RESPONSE (-8dB BB VGA GAIN STEP) RX DC OFFSET SETTLING RESPONSE (+8dB BB VGA GAIN STEP) CHANNEL BW = 8MHz 0V CHANNEL BW = 9MHz 250 200 CHANNEL BW = 10MHz 2V/div 2V/div VGA GAIN CONTROL 0V 0V 0V 5mV/div 5mV/div VGA GAIN CONTROL 150 100 50 0 0 2 4 6 8 10 12 FREQUENCY (MHz) 14 16 0V MAX2839 toc24 MAX2839 toc23 MAX2839 toc22 2V/div 2V/div VGA GAIN CONTROL RX BB VGA SETTLING RESPONSE (+8dB BB VGA GAIN STEP) RX DC OFFSET SETTLING RESPONSE (-32dB BB VGA GAIN STEP) RX DC OFFSET SETTLING RESPONSE (-16dB BB VGA GAIN STEP) 2V/div 10μs/div 10μs/div 0V VGA GAIN CONTROL VGA GAIN CONTROL 0V 0V 5mV/div 0V 1V/div 5mV/div 10μs/div 10μs/div 200ns/div RX BB VGA SETTLING RESPONSE (-8dB BB VGA GAIN STEP) RX BB VGA SETTLING RESPONSE (-16dB BB VGA GAIN STEP) RX BB VGA SETTLING RESPONSE (-32dB BB VGA GAIN STEP) MAX2839 toc25 2V/div MAX2839 toc27 MAX2839 toc26 2V/div 2V/div VGA GAIN CONTROL VGA GAIN CONTROL VGA GAIN CONTROL 0V 0V 1V/div 1V/div 0V 1V/div 200ns/div 200ns/div 200ns/div ______________________________________________________________________________________ 13 MAX2839 Typical Operating Characteristics (continued) (VCC = 2.8V, TA = +25°C, fLO = 2.5GHz, fREF = 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω unbalanced output of balun, using the MAX2839 Evalutation Kit.) Typical Operating Characteristics (continued) (VCC = 2.8V, TA = +25°C, fLO = 2.5GHz, fREF = 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω unbalanced output of balun, using the MAX2839 Evalutation Kit.) RX LNA SETTLING RESPONSE (MAX TO MAX - 32dB) MAX2839 toc28 RX BB FREQUENCY RESPONSE MAX2839 toc29 10 CHANNEL BW = 28MHz 2V/div 2V/div 0 LNA GAIN CONTROL LNA GAIN CONTROL MAX2839 toc30 RX LNA SETTLING RESPONSE (MAX TO MAX - 8dB) 0V 0V 1V/div 1V/div RESPONSE (dB) -10 -20 CHANNEL BW = 1.5MHz -30 -40 CHANNEL BW = 5MHz -50 CHANNEL BW = 10MHz -60 -70 200ns/div CHANNEL BW = 28MHz -1 -2 -3 -4 -5 CHANNEL BW = 1.5MHz CHANNEL BW = 5MHz CHANNEL BW = 10MHz MEAN = 0 DEV = 51.8mV SAMPLE SIZE = 7839 395 MAX2839 toc32 MAX2839 toc31 1 474 1 10 FREQUENCY (MHz) 100 HISTOGRAM: RX PHASE IMBALANCE HISTOGRAM: IQ GAIN IMBALANCE RX BB FREQUENCY RESPONSE 2 0 0.1 774 645 316 516 237 387 158 258 79 129 MAX2839 toc33 200ns/div RESPONSE (dB) MEAN = 0 DEV = 0.11878° SAMPLE SIZE = 7841 -6 0.1 1 10 FREQUENCY (MHz) HISTOGRAM: RX STATIC DC OFFSET 996 830 1σ/div 1σ/div POWER-ON DC OFFSET CANCELLATION WITH INPUT SIGNAL POWER-ON DC OFFSET CANCELLATION WITHOUT INPUT SIGNAL 100 5V/div 5V/div ENABLE 664 ENABLE 0V 0V 498 200mV/div 332 I/Q OUTPUT 10mV/div 166 VGA CODE = -36 LNA GAIN = MAX 1σ/div 14 MAX2839 toc36 MAX2839 toc35 MEAN = 0 DEV = 0.23981mV SAMPLE SIZE = 7841 MAX2839 toc34 MAX2839 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver I/Q OUTPUT 1μs/div VGA CODE = -36 LNA GAIN = MAX 1μs/div ______________________________________________________________________________________ 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver TX BASEBAND FREQUENCY RESPONSE TA = -40°C CHANNEL BW = 1.5MHz -20 -30 CHANNEL BW = 5MHz -40 CHANNEL BW = 10MHz -50 134 3.0 3.3 SUPPLY VOLTAGE (V) TX OUTPUT POWER vs. FREQUENCY 3 TA = +25°C -1 -2 1 10 FREQUENCY (MHz) MAX2839 toc39 100 TX OUTPUT SPECTRUM (10MHz CHANNEL BANDWIDTH, 16 QAM FUSC) -70dBr POUT = 0dBm 10dB/div TA = +25°C -30 MASK TA = +85°C 0dBr TA = +85°C -4 -70 0 TX OUTPUT SPECTRUM (10MHz CHANNEL BANDWIDTH, 64 QAM FUSC) 0dBr TA = -40°C -40 -45 -50 TA = +85°C -30 TA = -40°C TA = +85°C -35 -40 -45 -50 -55 TA = +25°C -65 -70 -60 2.555GHz -25 -60 -55 2.5GHz 2.555GHz -20 MAX2839 toc44 TX GAIN SET TO MAX - 3dB -35 2.5GHz TX CARRIER LEAKAGE vs. GAIN SETTING TA = +25°C 2.495GHz 2.495GHz 64 CARRIER LEAKAGE (dBc) 10dB/div 48 TX CARRIER LEAKAGE vs. FREQUENCY CARRIER LEAKAGE (dBc) MASK 32 TX GAIN CODE -30 MAX2839 toc43 POUT = 0dBm 16 MAX2839 toc45 2300 2350 2400 2450 2500 2550 2600 2650 2700 FREQUENCY (MHz) -70dBr CHANNEL BW = 10MHz 0.1 -50 -3 CHANNEL BW = 5MHz TA = -40°C -10 TA = -40°C 1 0 10 POUT (dBm) POUT (dBm) 2 -3 100 MAX2839 toc41 TX GAIN SET TO MAX - 3dB 1 10 FREQUENCY (MHz) TX OUTPUT POWER vs. GAIN SETTING MAX2839 toc40 4 CHANNEL BW = 1.5MHz -6 0.1 3.6 -2 -5 -70 2.7 -1 -4 -60 130 CHANNEL BW = 28MHz 0 RESPONSE (dB) RESPONSE (dB) 142 TA = +25°C 1 -10 TA = +85°C 138 CHANNEL BW = 28MHz 0 TX BASEBAND FREQUENCY RESPONSE 2 MAX2839 toc38 MAX2839 toc37 146 SUPPLY CURRENT (mA) 10 MAX2839 toc42 TX SUPPLY CURRENT vs. SUPPLY VOLTAGE 150 2300 2350 2400 2450 2500 2550 2600 2650 2700 FREQUENCY (MHz) 0 9 18 27 36 45 TX GAIN CODE 54 ______________________________________________________________________________________ 63 15 MAX2839 Typical Operating Characteristics (continued) (VCC = 2.8V, TA = +25°C, fLO = 2.5GHz, fREF = 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω unbalanced output of balun, using the MAX2839 Evalutation Kit.) Typical Operating Characteristics (continued) (VCC = 2.8V, TA = +25°C, fLO = 2.5GHz, fREF = 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω unbalanced output of balun, using the MAX2839 Evalutation Kit.) -45 -50 -55 -60 TA = -40°C -65 -70 -40 TA = +25°C MAX2839 toc47 TA = +85°C 3.0 TA = +85°C 2.5 2.0 -50 EVM (%) SIDEBAND LEVEL (dBc) -40 -30 SIDEBAND LEVEL (dBc) TX GAIN SET TO MAX - 3dB -35 MAX2839 toc46 -30 EVM vs. TX OUTPUT POWER (64 QAM FUSC, 10MHz CHANNEL BANDWIDTH) TX SIDEBAND LEVEL vs. GAIN SETTING MAX2839 toc48 TX SIDEBAND LEVEL vs. FREQUENCY -60 1.5 1.0 -70 TA = -40°C TA = +25°C 0.5 -75 0 -80 2300 2350 2400 2450 2500 2550 2600 2650 2700 FREQUENCY (MHz) 0 54 -50 63 310 -30 MEAN = -46.235dBc DEV = 5.1577dB SAMPLE SIZE = 7841 -40 -30 -20 POUT (dBm) -10 0 HISTOGRAM: TX SIDEBAND SUPPRESSION 504 MAX2839 toc50 RBW = 200kHz -20 27 36 45 TX GAIN CODE 372 MAX2839 toc49 0 18 HISTOGRAM: TX LO LEAKAGE TX OUTPUT EMISSION SPECTRUM -10 9 420 248 336 186 252 124 168 62 84 MAX2839 toc51 -80 MEAN = -47.856dBc DEV = 2.8827dB SAMPLE SIZE = 7841 -40 (dBm) -50 -60 -70 -80 -90 -100 LO FREQUENCY vs. DIFFERENTIAL TUNE VOLTAGE 2.8 2.7 2.6 -60 -70 PHASE NOISE (dBc/Hz) LO FREQUENCY (GHz) 5dB/div PHASE NOISE vs. OFFSET FREQUENCY -50 2.5 2.4 2.3 MAX2839 toc54 TX OUTPUT RETURN LOSS vs. FREQUENCY 25dB 1σ/div 1σ/div 26.5GHz MAX2839 toc53 0Hz MAX2839 toc52 MAX2839 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver -80 -90 -100 -110 -120 -130 2.2 3GHz FREQUENCY 16 -140 2.1 -25dB 2GHz -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 DIFFERENTIAL TUNE VOLTAGE (V) 2.5 -150 0.0001 0.001 0.01 0.1 OFFSET FREQUENCY (MHz) ______________________________________________________________________________________ 1 10 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver 100kHz MAX2839 toc56 MAX2839 toc55 100kHz MAX2839 toc57 VCO GAIN vs. DIFFERENTIAL TUNE VOLTAGE 80 CHANNEL-SWITCHING FREQUENCY SETTLING (2.7GHz TO 2.3GHz, AUTOMATIC VCO SUB-BAND SELECTION) CHANNEL-SWITCHING FREQUENCY SETTLING (2.3GHz TO 2.7GHz, AUTOMATIC VCO SUB-BAND SELECTION) 20kHz/div 20kHz/div 40 20 -100kHz 0 2.5 -100kHz 0 1.498 0 1.498 TIME (ms) TIME (ms) CHANNEL-SWITCHING FREQUENCY SETTLING (2.3GHz TO 2.7GHz, MANUAL VCO SUB-BAND SELECTION) MAX2839 toc58 100kHz CHANNEL-SWITCHING FREQUENCY SETTLING (2.7GHz TO 2.3GHz, MANUAL VCO SUB-BAND SELECTION) 100kHz 20kHz/div MAX2839 toc59 -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 DIFFERENTIAL TUNE VOLTAGE (V) 20kHz/div VCO GAIN (MHz/V) 60 -100kHz -100kHz 0 199.89 0 TIME (μs) 199.89 TIME (μs) TX-TO-RX TURNAROUND FREQUENCY GLITCH SETTLING RX-TO-TX TURNAROUND FREQUENCY GLITCHING SETTLING MAX2839 toc60 2V/div TX TO RX SWITCHING MAX2839 toc61 2V/div RX TO TX SWITCHING 10kHz/div FREQUENCY ERROR 1μs/div 10kHz/div FREQUENCY ERROR 1μs/div ______________________________________________________________________________________ 17 MAX2839 Typical Operating Characteristics (continued) (VCC = 2.8V, TA = +25°C, fLO = 2.5GHz, fREF = 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω unbalanced output of balun, using the MAX2839 Evalutation Kit.) 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver MAX2839 Pin Description PIN 18 NAME FUNCTION 1 GNDRXLNA_A Receiver A LNA Ground 2 VCCRXLNA_A Receiver A LNA Supply Voltage. Bypass with a 22pF capacitor as close as possible to the pin. 3 B0 4 LOAD Receiver Gain-Control Logic Input Bit 0 Receiver Gain Select. Positive edge trigger latches digital gain inputs B0–B7 to receive A. Negative edge trigger latches digital gain inputs B0–B7 to receive B. 5 VCCRXLNA_B Receiver B LNA Supply Voltage. Bypass with a 22pF capacitor as close as possible to the pin. 6 GNDRXLNA_B Receiver B LNA Ground 7 RXINB+ 8 RXINB- Receiver B LNA Differential Input. Input is internally DC-coupled. 9 B4 Receiver and Transmitter Gain-Control Logic Input Bit 4 10 B3 Receiver and Transmitter Gain-Control Logic Input Bit 3 11 VCCTXPAD 12 B2 13 TXOUT+ 14 TXOUT- 15 B1 Receiver and Transmitter Gain-Control Logic Input Bit 1 16 B5 Receiver and Transmitter Gain-Control Logic Input Bit 5 17 PABIAS 18 VCCTXMX Supply Voltage for Transmitter PA Driver. Bypass with a 22pF capacitor as close as possible to the pin. Receiver and Transmitter Gain-Control Logic Input Bit 2 Power Amplifier Driver Differential Output. The pins have internal AC blocking capacitors. Transmit External PA Bias DAC Output Transmitter Upconverter Supply Voltage. Bypass with a 22pF capacitor as close as possible to the pin. 19 SCLK 20 ENABLE Serial-Clock Logic Input of 4-Wire Serial Interface Transceiver Enable 21 CLKOUT Reference Clock Buffer Output 22 REFCLK 23 XTAL1 24 VCCXTAL Crystal or Reference Clock Input. AC-couple a crystal or a reference clock to this analog input. XTAL Input. Connect the other terminal of the XTAL to this pin. Crystal Oscillator Supply Voltage. Bypass with a 100nF capacitor as close as possible to the pin. 25 VCCCP PLL Charge-Pump Supply Voltage. Bypass with a 100nF capacitor as close as possible to the pin. 26 GNDCP Charge-Pump Circuit Ground 27 CPOUT+ 28 CPOUT- Differential Charge-Pump Output. Connect the frequency synthesizer’s loop filter between these pins (see the Typical Operating Circuit). 29 GNDVCO 30 VCOBYP 31 VCCVCO 32 CS 33 DOUT 34 DIN 35 RXBBIB- 36 RXBBIB+ 37 RXBBQB- 38 RXBBQB+ VCO Ground On-Chip VCO Regulator Output Bypass. Bypass with a 1µF capacitor to GND. Do not connect other circuitry to this pin. VCO Supply Voltage. Bypass with a 22nF capacitor as close as possible to the pin. Chip-Select Logic Input of 4-Wire Serial Interface Data Logic Output of 4-Wire Serial Interface Data Logic Input of 4-Wire Serial Interface Receiver B Baseband I-Channel Differential Outputs Receiver B Baseband Q-Channel Differential Outputs ______________________________________________________________________________________ 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver PIN NAME 39 RSSI 40 B7 Receiver Gain-Control Logic Input Bit 7 41 B6 Receiver and Transmitter Gain-Control Logic Input Bit 6 42 RXHP 43 RXBBQA- 44 RXBBQA+ 45 RXBBIA- 46 RXBBIA+ 47 VCCRXVGA 48 VCCRXFL 49 TXBBI- 50 TXBBI+ 51 TXBBQ+ 52 TXBBQ- 53 VCCRXMX 54 RXTX 55 RXINA- 56 RXINA+ — EP FUNCTION Receiver Signal Strength Output Receiver Baseband AC-Coupling Highpass Corner Frequency Control Logic Input. For typical WiMAX application, connect pin to ground. Receiver Baseband Q-Channel Differential Outputs Receiver A Baseband I-Channel Differential Outputs Receiver VGA Supply Voltage. Bypass with a 100nF capacitor as close as possible to the pin. Receiver Baseband Filter Supply Voltage. Bypass with a 100nF capacitor as close as possible to the pin. Transmitter Baseband I-Channel Differential Inputs Transmitter Baseband Q-Channel Differential Inputs Receiver Downconverters Supply Voltage. Bypass with a 22pF capacitor as close as possible to the pin. Receive/Transmit Mode Enable Receiver A LNA Differential Input. Input is internally DC-coupled. Exposed Paddle. Internally connected to GND. Connect to a large ground plane for optimum RF performance and enhanced thermal dissipation. Not intended as an electrical connection point. ______________________________________________________________________________________ 19 MAX2839 Pin Description (continued) MAX2839 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver Table 1. Operating Mode MODE CONTROL LOGIC INPUTS MODE ENABLE PIN RXTX PIN SPI REG1 D<3> SPI REG16 D<1:0> CIRCUIT BLOCK STATES Rx PATH Tx PATH PLL, VCO, LO GEN CALIBRATION SECTIONS ON CLOCK OUTPUT Shutdown 0 0 X XX Off Off Off None Off Clock-Out Only 1 X X X0 Off Off Off None On Clock-Out Only X 1 X X0 Off Off Off None On Standby 0 1 X 01 Off Off On or Off None On Rx (1x2 MIMO) 1 1 1 01 On Off On None On Rx (1x1 SISO) 1 1 0 01 On (RxA) Off On None On Tx 1 0 X 01 Off On On None On Tx Calibration 1 0 X 11 Off On (except PA driver) On AM detector + Rx I, Q buffers On RxA Calibration (Loopback) 1 1 0 11 On (except LNA) On (except PA driver) On Loopback On RxB Calibration (Loopback) 1 1 1 11 On (except LNA) On (except PA driver) On Loopback On Detailed Description Modes of Operation The modes of operation for the MAX2839 are shutdown, clock-out only, standby, receive, transmit, transmitter calibration and receiver calibration. See Table 1 for a summary of the modes of operation. When the parts are active, various blocks can be shutdown individually by programming different SPI registers. Shutdown Mode The MAX2839 features a low-power shutdown mode. In shutdown mode, all circuit blocks are powered down, except the 4-wire serial bus and its internal programmable registers. Clock-Out Only In clock-out mode, the entire transceiver is off except the divided reference clock output on the CLKOUT pin and the clock divider, which remains on. Standby Mode The standby mode is used to enable the frequency synthesizer block while the rest of the device is powered down. In this mode, PLL, VCO, and LO generator 20 are on so that Tx or Rx modes can be quickly enabled from this mode. These and other blocks can be selectively enabled in this mode by programming different SPI registers. Receive (Rx) Mode In receive mode, all Rx circuit blocks are powered on and active. Antenna signal is applied; RF is downconverted, filtered, and buffered at Rx BB I and Q outputs. Either receiver A or both receivers can be enabled. Receiver B cannot be enabled by itself. Transmit (Tx) Mode In transmit mode, all Tx circuit blocks are powered on. The external PA is powered on after a programmable delay using the on-chip PA bias DAC. Transmitter (Tx) Calibration Mode All Tx circuit blocks except PA driver and external PA are powered on and active. The AM detector and receiver I/Q channel buffers are also ON, along with multiplexers in receiver side to route this AM detector’s signal to each I and Q differential outputs. ______________________________________________________________________________________ 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver 10 least significant bits (LSBs) are register data. Register data is loaded through the 4-wire SPI/MICROWIRE™-compatible serial interface. Data at DIN is shifted in MSB first and is framed by CS. When CS is low, the clock is active, and input data is shifted at the rising edge of the clock. During the read mode, register data selected by address bits is shifted out to DOUT at the falling edges of the clock. At the CS rising edge, the 10-bit data bits are latched into the register selected by address bits. See Figure 1. The register values are preserved in shutdown mode as long as the power-supply voltage is maintained. However, every time the power-supply voltage is turned on, the registers are reset to the default values. Programmable Registers and 4-Wire SPI Interface The MAX2839 includes 32 programmable 16-bit registers. The most significant bit (MSB) is the read/write selection bit. The next 5 bits are register address. The DON'T CARE DOUT BIT 1 DIN BIT 2 BIT 5 BIT 13 BIT 6 BIT 14 SCLK tCS1 tCH tDS CS tCL tCSO tDH tCSS tCSH tCSW SPI REGISTER WRITE DON'T CARE DOUT BIT 6 BIT 13 BIT 14 tD DIN BIT 1 BIT 2 BIT 5 DON'T CARE SCLK CS SPI REGISTER READ Figure 1. 4-Wire SPI Serial-Interface Timing Diagram MICROWIRE is a trademark of National Semiconductor Corp. ______________________________________________________________________________________ 21 MAX2839 Receiver (Rx) Calibration or Loopback Part of Rx and Tx circuit blocks except LNA and PA driver are powered on and active. The transmitter I/Q input signals are upconverted to RF, and the output of the Tx gain control block (VGA) is fed to the receiver at the input of the downconverter. Either receiver A or both receivers can be connected to the transmitter and powered on. The I/Q lowpass filters are not present in the transmitter signal path (they are bypassed). 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver MAX2839 Block Diagram/Typical Operating Circuit Rx A INPUT 56 55 54 53 52 51 50 49 48 47 46 45 RXBBQA- RXBBQA+ RXBBIA- RXBBIA+ VCCRXVGA VCCRXFL Rx A OUTPUTS TXBBI- TXBBI+ TXBBQ+ TXBBQ- Tx INPUTS VCCRXMX RXTX RXINA- RXINA+ MODE CONTROL 44 43 + B2 TXOUT+ TXOUT- IMUX 8 35 9 10 SERIAL INTERFACE TEMP SENSOR IMUX/QMUX AM DETECTOR 90° 34 33 SCLK 11 32 0° 12 31 13 SERIAL INTERFACE 14 B1 15 16 Rx/Tx GAIN CONTROL 17 18 19 ÷ 20 21 CRYSTAL OSCILLATOR/ BUFFER 22 MODE CONTROL SERIAL INPUT 23 30 ÷ PLL 29 24 25 26 27 RXHP Rx BASBAND HPF CONTROL B6 Rx/Tx GAIN CONTROL Rx GAIN CONTROL B7 RSSI RXBBQB+ RXBBQBRXBBIB+ DIN DOUT CS VCCVCO VCOBYP GNDVCO 28 PLL FILTER REFERENCE CLOCK OUTPUT 22 Rx B OUTPUTS RXBBIB- CPOUT- Rx/Tx GAIN CONTROL 37 36 GNDCP Tx OUTPUT 7 CPOUT+ VCCTXPAD QMUX VCCCP B3 38 6 XTAL1 B4 RSSI MAX2839 VCCXTAL Rx/Tx GAIN CONTROL Rx/Tx GAIN CONTROL 5 REFCLK RXINB- 39 RSSI MUX CLKOUT RXINB+ 40 4 SCLK GNDRXLNA_B Rx B INPUT QMUX 3 ENABLE VCCRXLNA_B 41 VCCTXMX B0 LOAD 42 2 B5 VCCRXLNA_A Rx GAIN CONTROL Rx GAIN SELECT IMUX 1 PABIAS GNDRXLNA_A ______________________________________________________________________________________ SERIAL INPUT SERIAL OUTPUT SERIAL INPUT 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver GNDRXLNA_A 1 RXINA+ RXINA- RXTX VCCRXMX TXBBQ- TXBBQ+ TXBBI+ TXBBI- VCCRXFL VCCRXVGA RXBBIA+ RXBBIA- RXBBQA+ RXBBQA- 56 55 54 53 52 51 50 49 48 47 46 45 44 43 + 42 RXHP VCCRXLNA_A 2 41 B6 B0 3 40 B7 LOAD 4 39 RSSI VCCRXLNA_B 5 38 RXBBQB+ GNDRXLNA_B 6 37 RXBBQB- RXINB+ 7 36 RXBBIB+ MAX2839 RXINB- 8 35 RXBBIB- B4 9 34 DIN B3 10 33 DOUT 32 CS VCCTXPAD 11 B2 12 31 VCCVCO TXOUT+ 13 30 VCOBYP 29 GNDVCO TXOUT- 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 B1 B5 PABIAS VCCTXMX SCLK ENABLE CLKOUT REFCLK XTAL1 VCCXTAL VCCCP GNDCP CPOUT+ CPOUT- *EP TQFN *EP = EXPOSED PAD. Chip Information PROCESS: BiCMOS ______________________________________________________________________________________ 23 MAX2839 Pin Configuration Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 56L THIN QFN.EPS MAX2839 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver PACKAGE OUTLINE 56L THIN QFN, 8x8x0.8mm 21-0135 24 ______________________________________________________________________________________ F 1 2 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver PACKAGE OUTLINE 56L THIN QFN, 8x8x0.8mm 21-0135 F 2 2 ______________________________________________________________________________________ 25 MAX2839 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) MAX2839 2.3GHz to 2.7GHz MIMO Wireless Broadband RF Transceiver Revision History REVISION NUMBER REVISION DATE 0 2/08 Initial release 1 3/08 Corrected Ordering Information and pin 42 in Pin Description DESCRIPTION PAGES CHANGED — 1, 19 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 26 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.