MAX1420ECM+D

19-1981; Rev 1; 5/04 KIT ATION EVALU E L B AVAILA 12-Bit, 60Msps, 3.3V, Low-Power ADC with Internal Reference ♦ 66dB SNR at fIN = 15MHz ♦ Internal 2.048V Precision Bandgap Reference ♦ Differential, Wideband Input T/H Amplifier ♦ Power-Down Modes 218mW (Reference Shutdown Mode) 10µW (Shutdown Mode) ♦ Space-Saving 48-Pin TQFP Package Ordering Information PART TEMP RANGE 0°C to +70°C 48 TQFP MAX1420ECM -40°C to +85°C 48 TQFP D11 D10 37 38 39 40 AVDD AGND PD OE 41 42 43 44 45 46 AGND AVDD CML REFN REFP REFIN 47 48 Pin Configuration AGND AVDD AVDD AGND AGND 1 36 2 35 3 34 4 33 5 32 INP INN AGND AGND AVDD AVDD AGND 6 31 MAX1420 7 30 DVDD DGND DGND D5 D4 D3 D2 24 23 22 21 D9 D8 D7 D6 DVDD AGND AVDD DVDD DGND D0 D1 20 25 19 26 12 18 27 11 17 28 10 16 29 9 15 8 AGND AVDD Functional diagram appears at end of data sheet. PIN-PACKAGE MAX1420CCM 13 Medical Ultrasound Imaging CCD Pixel Processing IR Focal Plane Arrays Radar IF and Baseband Digitization ♦ 67dB SNR at fIN = 5MHz AVDD AGND CLK CLK ________________________Applications ♦ 3.3V Single Power Supply 14 Pin-compatible lower speed versions of the MAX1420 are also available. Please refer to the MAX1421 data sheet for 40Msps and the MAX1422 data sheet for 20Msps. Features 48-TQFP ________________________________________________________________ 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 MAX1420 General Description The MAX1420, 3.3V, 12-bit analog-to-digital converter (ADC) features a fully-differential input, pipelined, 12stage ADC architecture with wideband track-and-hold (T/H) and digital error correction, incorporating a fullydifferential signal path. The MAX1420 is optimized for low-power, high dynamic performance applications in imaging and digital communications. The converter operates from a single 3.3V supply, and consumes only 221mW. The fully-differential input stage has a small signal -3dB bandwidth of 400MHz and may be operated with single-ended inputs. An internal 2.048V precision bandgap reference sets the full-scale range of the ADC. A flexible reference structure accommodates an internal reference, or externally applied buffered or unbuffered reference for applications that require increased accuracy and a different input voltage range. In addition to low operating power, the MAX1420 features two power-down modes: reference power-down and shutdown mode. In reference power-down, the internal bandgap reference is deactivated, which results in a typical 2mA supply current reduction. A full shutdown mode is available to maximize power savings during idle periods. The MAX1420 provides parallel, offset binary, CMOScompatible three-state outputs. The MAX1420 is available in a 7mm x 7mm x 1.4mm, 48-pin TQFP package, and is specified over the commercial (0°C to +70°C) and the extended industrial (-40°C to +85°C) temperature range. MAX1420 12-Bit, 60Msps, 3.3V, Low-Power ADC with Internal Reference ABSOLUTE MAXIMUM RATINGS AVDD, DVDD to AGND ..............................................-0.3V to +4V DVDD, AVDD to DGND..............................................-0.3V to +4V DGND to AGND.....................................................-0.3V to +0.3V INP, INN, REFP, REFN, REFIN, CML, CLK, CLK ....................(AGND - 0.3V) to (AVDD + 0.3V) D0–D11, OE, PD .....................(DGND - 0.3V) to (DVDD + 0.3V) Continuous Power Dissipation (TA = +70°C) 48-Pin TQFP (derate 21.7mW/°C above +70°C)........1789mW Operating Temperature Ranges MAX1420CCM ....................................................0°C to +70°C MAX1420ECM .................................................-40°C to +85°C Maximum Junction Temperature .....................................+150°C Storage Temperature Range .............................-65°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 (VAVDD = VDVDD = 3.3V, AGND = DGND = 0, VIN = ±1.024V, differential input voltage at -0.5dBFS, internal reference, fCLK = 62.5MHz (50% duty cycle); digital output load CL = 10pF, ≥+25°C guaranteed by production test,