MAX19710 19-0526 Rev 0 5/06 10-Bit, 7.5Msps, Full-Duplex Analog Front-End General Description Features Dual 10-Bit, 7.5Msps Rx ADC and Dual 10-Bit, The MAX19710 is an ultra-low-power, highly integrated 7.5Msps Tx DAC mixed-signal analog front-end (AFE) ideal for wideband communication applications operating in full-duplex (FD) Ultra-Low Power mode. Optimized for high dynamic performance and 30mW at f = 7.5MHz, FD Mode CLK ultra-low power, the device integrates a dual 10-bit, 21.3mW at f = 7.5MHz, Slow Rx Mode CLK 21.9mW at f = 7.5MHz, Slow Tx Mode 7.5Msps receive (Rx) ADC dual 10-bit, 7.5Msps transmit CLK Low-Current Standby and Shutdown Modes (Tx) DAC three fast-settling 12-bit aux-DAC channels for ancillary RF front-end control and a 10-bit, 333ksps Programmable Tx DAC Common-Mode DC Level housekeeping aux-ADC. The typical operating power in and I/Q Offset Trim FD mode is 30mW at a 7.5MHz clock frequency. Excellent Dynamic Performance The Rx ADCs feature 54.8dB SINAD and 79.8dBc SFDR SNR = 54.9dB at f = 3.3MHz (Rx ADC) IN SFDR = 73.8dBc at f = 620kHz (Tx DAC) at 3.3MHz input frequency with a 7.5MHz clock frequen- OUT cy. The analog I/Q input amplifiers are fully differential Three 12-Bit, 1s Aux-DACs and accept 1.024V full-scale signals. Typical I/Q P-P 10-Bit, 333ksps Aux-ADC with 4:1 Input Mux and channel matching is 0.01 phase and 0.01dB gain. Data Averaging The Tx DACs feature 73.8dBc SFDR at f = 620kHz OUT Excellent Gain/Phase Match and f = 7.5MHz. The analog I-Q full-scale output volt- CLK 0.01 Phase, 0.01dB Gain (Rx ADC) at age range is 400mV differential. The output DC com- f = 1.8MHz IN mon-mode voltage is from 0.89V to 1.36V. The I/Q Multiplexed Parallel Digital I/O channel offset is adjustable to optimize radio lineup side- Serial-Interface Control band/carrier suppression. Typical I-Q channel matching Versatile Power-Control Circuits is 0.01dB gain and 0.15 phase. Shutdown, Standby, Idle, Tx/Rx Disable Two independent 10-bit parallel, high-speed digital Miniature 56-Pin Thin QFN Package buses used by the Rx ADC and Tx DAC allow full- (7mm x 7mm x 0.8mm) duplex operation for frequency-division duplex applica- tions. The Rx ADC and Tx DAC can be disabled independently to optimize power management. A 3-wire serial interface controls power-management modes, the Pin Configuration aux-DAC channels, and the aux-ADC channels. TOP VIEW The MAX19710 operates on a single 2.7V to 3.3V analog supply and 1.8V to 3.3V digital I/O supply. The 42 41 40 39 38 37 36 35 34 33 32 31 30 29 MAX19710 is specified for the extended (-40C to ADC1 43 28 DA3 +85C) temperature range and is available in a 56-pin, DAC3 44 27 DA2 thin QFN package. The Selector Guide at the end of the DAC2 45 26 DA1 data sheet lists other pin-compatible versions in this AFE DAC1 46 25 DA0 family. For time-division duplex (TDD) applications, refer V 47 24 OV DD DD to the MAX19705MAX19708 AFE family of products. IDN 48 23 OGND IDP 49 22 AD9 Applications GND 50 MAX19710 21 AD8 V 51 20 AD7 DD QDN 52 19 AD6 Broadband Access Portable Communication QDP 53 18 AD5 Radio Equipment REFIN 54 17 AD4 Private Mobile Radio EXPOSED PADDLE (GND) COM 55 16 AD3 REFN 56 15 AD2 Ordering Information 1 2 3 4 5 6 7 8 9 10 11 121314 PART* PIN-PACKAGE PKG CODE THIN QFN MAX19710ETN 56 Thin QFN-EP** T5677-1 NOTE: THE PIN 1 INDICATOR IS + FOR LEAD-FREE DEVICES. MAX19710ETN+ 56 Thin QFN-EP** T5677-1 *All devices are specified over the -40C to +85C operating range. Functional Diagram and Selector Guide appear at end of **EP = Exposed paddle. +Denotes lead-free package. data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE REFP ADC2 V V DD DD IAP GND IAN V DD GND CS/WAKE CLK SCLK GND DIN V DOUT DD QAN DA9 QAP DA8 V DA7 DD GND DA6 AD0 DA5 AD1 DA410-Bit, 7.5Msps, Full-Duplex 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 56-Pin Thin QFN-EP (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) Storage Temperature Range .............................-60C to +150C DD AD0AD9, DA0DA9, SCLK, DIN, CS/WAKE, Lead Temperature (soldering, 10s) .................................+300C CLK, DOUT 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 = 7.5MHz (50% duty cycle), Rx ADC input DD DD L CLK amplitude = -0.5dBFS, Tx DAC output amplitude = 0dBFS, CM1 = 0, CM0 = 0, differential Rx ADC input, differential Tx DAC output, C = C = C = 0.33F, C < 5pF on all aux-DAC outputs, T = T to T , unless otherwise noted. Typical values are at REFP REFN COM L A MIN MAX T = +25C.) (Note 1) 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 FD mode: f = 7.5MHz, f = 620kHz CLK OUT on both DAC channels f = 1.875MHz on both ADC channels 10 12 IN aux-DACs ON and at midscale, aux-ADC ON SPI2-Tx mode: f = 7.5MHz, f = CLK OUT 620kHz on both DAC channels Rx ADC 7.3 9 OFF aux-DACs ON and at midscale, aux- ADC ON V Supply Current mA DD SPI1-Rx mode: f = 7.5MHz, f = CLK IN 1.875MHz on both ADC channels Tx DAC 7.1 9 OFF (Tx DAC outputs at 0V) aux-DACs ON and at midscale, aux-ADC ON SPI4-Tx mode: f = 7.5MHz, f = CLK OUT 620kHz on both DAC channels Rx ADC 9.7 12 ON (output tri-stated) aux-DACs ON and at midscale, aux-ADC ON 2 MAX19710