MAX19707 19-3826 Rev 1 6/07 10-Bit, 45Msps, Ultra-Low-Power Analog Front-End General Description Features The MAX19707 is an ultra-low-power, mixed-signal ana- Dual, 10-Bit, 45Msps Rx ADC and Dual, 10-Bit, log front-end (AFE) designed for power-sensitive com- 45Msps Tx DAC munication equipment. Optimized for high dynamic Ultra-Low Power performance at ultra-low power, the device integrates a 84.6mW at f = 45MHz, Fast Mode CLK dual, 10-bit, 45Msps receive (Rx) ADC dual, 10-bit, 77.1mW at f = 45MHz, Slow Mode CLK 45Msps transmit (Tx) DAC three fast-settling 12-bit Low-Current Standby and Shutdown Modes aux-DAC channels for ancillary RF front-end control Programmable Tx DAC Common-Mode DC Level and a 10-bit, 333ksps housekeeping aux-ADC. The typ- and I/Q Offset Trim ical operating power in Tx-Rx FAST mode is 84.6mW at a 45MHz clock frequency. Excellent Dynamic Performance SNR = 54.2dB at f = 5.5MHz (Rx ADC) IN The Rx ADCs feature 54.2dB SNR and 71.2dBc SFDR SFDR = 73.2dBc at f = 2.2MHz (Tx DAC) OUT at f = 5.5MHz and f = 45MHz. The analog I/Q IN CLK input amplifiers are fully differential and accept Three 12-Bit, 1s Aux-DACs 1.024V full-scale signals. Typical I/Q channel match- P-P 10-Bit, 333ksps Aux-ADC with 4:1 Input Mux and ing is 0.03 phase and 0.01dB gain. Data Averaging The Tx DACs feature 73.2dBc SFDR at f = 2.2MHz OUT Excellent Gain/Phase Match and f = 45MHz. The analog I/Q full-scale output volt- CLK 0.03 Phase, 0.01dB Gain (Rx ADC) at age is 400mV differential. The Tx DAC common-mode f = 5.5MHz IN DC level is programmable from 0.71V to 1.05V. The I/Q Multiplexed Parallel Digital I/O channel offset is programmable to optimize radio lineup sideband/carrier suppresion. The typical I/Q channel Serial-Interface Control matching is 0.01dB gain and 0.07 phase. Versatile Power-Control Circuits The Rx ADC and Tx DAC share a single, 10-bit parallel, Shutdown, Standby, Idle, Tx/Rx Disable high-speed digital bus allowing half-duplex operation Miniature 48-Pin Thin QFN Package for time-division duplex (TDD) applications. A 3-wire (7mm x 7mm x 0.8mm) serial interface controls power-management modes, the aux-DAC channels, and the aux-ADC channels. Pin Configuration The MAX19707 operates on a single 2.7V to 3.3V ana- log supply and 1.8V to 3.3V digital I/O supply. The TOP VIEW MAX19707 is specified for the extended (-40C to +85C) temperature range and is available in a 48-pin, 36 35 34 33 32 31 30 29 28 27 26 25 thin QFN package. The Selector Guide at the end of the 24 data sheet lists other pin-compatible versions in this DAC2 37 D9 23 AFE family. DAC1 38 D8 V 39 22 D7 DD Applications 21 IDN 40 D6 WiMAX CPEs VoIP Terminals 20 IDP 41 OV DD GND 42 19 OGND 802.11a/b/g WLAN Portable Communication V 43 18 D5 DD MAX19707 Equipment 17 D4 QDN 44 16 QDP 45 D3 Ordering Information EXPOSED PADDLE (GND) REFIN 46 15 D2 COM 14 D1 47 PART* PIN-PACKAGE PKG CODE 13 D0 REFN 48 MAX19707ETM 48 Thin QFN-EP** T4877-4 12 34 5 67 89 10 11 12 MAX19707ETM+ 48 Thin QFN-EP** T4877-4 *All devices are specified over the -40C to +85C operating range. THIN QFN **EP = Exposed paddle. +Denotes lead-free package. Functional Diagram and Selector Guide appear at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE REFP DAC3 V ADC1 DD IAP ADC2 IAN V DD GND GND CLK V DD GND CS V DD SCLK QAN DIN QAP T/R V DOUT DD GND SHDN10-Bit, 45Msps, Ultra-Low-Power Analog Front-End ABSOLUTE MAXIMUM RATINGS V to GND, OV to OGND ..............................-0.3V to +3.6V Continuous Power Dissipation (T = +70C) DD DD A GND to OGND.......................................................-0.3V to +0.3V 48-Pin Thin QFN (derate 27.8mW/C above +70C) .....2.22W IAP, IAN, QAP, QAN, IDP, IDN, QDP, Thermal Resistance ..................................................36C/W JA QDN, DAC1, DAC2, DAC3 to GND.....................-0.3V to V Operating Temperature Range ...........................-40C to +85C DD ADC1, ADC2 to GND.................................-0.3V to (V + 0.3V) Junction Temperature......................................................+150C DD REFP, REFN, REFIN, COM to GND-0.3V to (V + 0.3V)D0D9, Storage Temperature Range .............................-60C to +150C DD DOUT, T/R, SHDN, SCLK, DIN, CS, Lead Temperature (soldering, 10s) .................................+300C CLK to OGND .....................................-0.3V to (OV + 0.3V) DD 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. ELECTRICAL CHARACTERISTICS (V = 3V, OV = 1.8V, internal reference (1.024V), C 10pF on all digital outputs, f = 45MHz (50% duty cycle), Rx ADC input DD DD L CLK amplitude = -0.5dBFS, Tx DAC output amplitude = 0dBFS, differential Rx ADC input, differential Tx DAC output, C = C = REFP REFN C = 0.33F, unless otherwise noted. C < 5pF on all aux-DAC outputs. Typical values are at T = +25C.) (Note 1) COM L A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER REQUIREMENTS Analog Supply Voltage V 2.7 3.0 3.3 V DD Output Supply Voltage OV 1.8 V V DD DD Ext1-Tx, Ext3-Tx, and SPI2-Tx states transmit DAC operating mode (Tx): f = 45MHz, f = 2.2MHz on both 16.5 CLK OUT channels aux-DACs ON and at midscale, aux-ADC ON Ext2-Tx, Ext4-Tx, and SPI4-Tx states transmit DAC operating mode (Tx): f = 45MHz, f = 2.2MHz on both 29.8 35 CLK OUT channels aux-DACs ON and at midscale, aux-ADC ON V Supply Current mA DD Ext1-Rx, Ext4-Rx, and SPI3-Rx states receive ADC operating mode (Rx): f = 45MHz, f = 5.5MHz on both 28.2 34 CLK IN channels aux-DACs ON and at midscale, aux-ADC ON Ext2-Rx, Ext3-Rx, and SPI1-Rx states receive ADC operating mode (Rx): f = 45MHz, f = 5.5MHz on both 25.7 CLK IN channels aux-DACs ON and at midscale, aux-ADC ON 2 MAX19707