MAX1428ETN+TD

19-3433; Rev 0; 10/04 15-Bit, 80Msps ADC with -78.4dBFS Noise Floor for IF Applications The MAX1428 is a 5V, high-speed, high-performance analog-to-digital converter (ADC) featuring a fully differential wideband track-and-hold (T/H) and a 15-bit converter core. The MAX1428 is optimized for multichannel, multimode receivers, which require the ADC to meet very stringent dynamic performance requirements. With a noise floor of -78.4dBFS, the MAX1428 allows for the design of receivers with superior sensitivity. The MAX1428 achieves two-tone, spurious-free dynamic range (SFDR) of -82dBc for input tones of 69MHz and 71MHz. Its excellent signal-to-noise ratio (SNR) of 73.9dB and single-tone SFDR performance (SFDR1/SFDR2) of 83dBc/91dBc at fIN = 70MHz and a sampling rate of 80Msps make this part ideal for high-performance digital receivers. The MAX1428 operates from an analog 5V and a digital 3V supply, features a 2.56VP-P full-scale input range, and allows for a sampling speed of up to 80Msps. The input T/H operates with a -1dB full-power bandwidth of 260MHz. The MAX1428 features parallel, CMOS-compatible outputs in two’s-complement format. To enable the interface with a wide range of logic devices, this ADC provides a separate output driver power-supply range of 2.3V to 3.5V. The MAX1428 is manufactured in an 8mm x 8mm, 56-pin thin QFN package with exposed paddle (EP) for low thermal resistance, and is specified for the extended industrial (-40°C to +85°C) temperature range. Note that IF parts MAX1418, MAX1428, and MAX1430 (see Pin-Compatible Higher/Lower Speed Versions Selection table) are recommended for applications that require high dynamic performance for input frequencies greater than fCLK/3. Unlike its baseband counterpart MAX1427, the MAX1428 is optimized for input frequencies greater than fCLK/3. Applications Features ♦ 80Msps Minimum Sampling Rate ♦ -78.4dBFS Noise Floor ♦ Excellent Dynamic Performance 73.9dB SNR at fIN = 70MHz and AIN = -2dBFS 83dBc/91dBc Single-Tone SFDR1/SFDR2 at fIN = 70MHz and AIN = -2dBFS -82dB Multitone SFDR at fIN1 = 69MHz and fIN2 = 71MHz ♦ Less than 0.25ps Sampling Jitter ♦ Fully Differential Analog Input Voltage Range of 2.56VP-P ♦ CMOS-Compatible Two’s-Complement Data Output ♦ Separate Data Valid Clock and Overrange Outputs ♦ Flexible-Input Clock Buffer ♦ EV Kit Available for MAX1428 (Order MAX1427EVKIT) Ordering Information PART MAX1428ETN PIN-PACKAGE 56 Thin QFN-EP* *EP = Exposed paddle. Pin-Compatible Higher/Lower Speed Versions Selection Cellular Base-Station Transceiver Systems (BTS) Wireless Local Loop (WLL) TEMP RANGE -40°C to +85°C PART SPEED GRADE (Msps) TARGET APPLICATION Single- and Multicarrier Receivers MAX1418 65 IF Multistandard Receivers MAX1419 65 Baseband E911 Location Receivers MAX1427 80 Baseband Power Amplifier Linearity Correction MAX1428 80 IF Antenna Array Processing MAX1429 100 Baseband MAX1430 100 IF Pin Configuration appears at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX1428 General Description MAX1428 15-Bit, 80Msps ADC with -78.4dBFS Noise Floor for IF Applications ABSOLUTE MAXIMUM RATINGS AVCC, DVCC, DRVCC to GND.................................. -0.3V to +6V INP, INN, CLKP, CLKN, CM to GND........-0.3V to (AVCC + 0.3V) D0–D14, DAV, DOR to GND..................-0.3V to (DRVCC + 0.3V) Continuous Power Dissipation (TA = +70°C) 56-Pin Thin QFN (derate 47.6mW/°C above +70°C) ...3809.5mW Operating Temperature Range ...........................-40°C to +85°C Thermal Resistance θJA ...................................................21°C/W Junction Temperature ......................................................+150°C Storage Temperature Range .............................-60°C to +150°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. ELECTRICAL CHARACTERISTICS (AVCC = 5V, DVCC = DRVCC = 2.5V, GND = 0, INP and INN driven differentially with -2dBFS, CLKP and CLKN driven differentially with a 2VP-P sinusoidal input signal, CL = 5pF at digital outputs, fCLK = 80MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C, unless otherwise noted. ≥+25°C guaranteed by production test,