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MAX1195 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX1195 Datasheet(HTML) 1 Page - Maxim Integrated Products |
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General Description The MAX1195 is a 3V, dual, 8-bit analog-to-digital con- verter (ADC) featuring fully differential wideband track- and-hold (T/H) inputs, driving two ADCs. The MAX1195 is optimized for low-power, small size, and high-dynamic performance for applications in imaging, instrumentation and digital communications. This ADC operates from a single 2.7V to 3.6V supply, consuming only 87mW while delivering a typical signal-to-noise and distortion (SINAD) of 48.5dB at an input frequency of 20MHz and a sam- pling rate of 40Msps. The T/H-driven input stages incor- porate 400MHz (-3dB) input amplifiers. The converters may also be operated with single-ended inputs. In addi- tion to low operating power, the MAX1195 features a 3mA sleep mode as well as a 0.1µA power-down mode to conserve power during idle periods. An internal 2.048V precision bandgap reference sets the full-scale range of the ADC. A flexible reference structure allows the use of this internal or an externally applied reference, if desired, for applications requiring increased accuracy or a different input voltage range. The MAX1195 features parallel, CMOS-compatible three- state outputs. The digital output format can be set to two’s complement or straight offset binary through a single con- trol pin. The device provides for a separate output power supply of 1.7V to 3.6V for flexible interfacing with various logic families. The MAX1195 is available in a 7mm x 7mm, 48-pin TQFP package, and is specified for the extended industrial (-40°C to +85°C) temperature range. Pin-compatible higher speed versions of the MAX1195 are also available. Refer to the MAX1197 data sheet for 60Msps and the MAX1198 data sheet for 100Msps. In addition to these speed grades, this family will include a multiplexed output version (MAX1196, 40Msps), for which digital data is presented time interleaved and on a single, parallel 8-bit output port. For a 10-bit, pin-compatible upgrade, refer to the MAX1183 data sheet. With the N.C. pins of the MAX1195 internally pulled down to ground, this ADC becomes a drop-in replacement for the MAX1183. Applications Features o Single 2.7V to 3.6V Operation o Excellent Dynamic Performance 48.5dB/46.7dB SINAD at fIN = 20MHz/200MHz 68.7dBc/55.7dBc SFDR at fIN = 20MHz/200MHz o -72dB Interchannel Crosstalk at fIN = 20MHz o Low Power 87mW (Normal Operation) 9mW (Sleep Mode) 0.3µW (Shutdown Mode) o 0.05dB Gain and ±0.05° Phase Matching o Wide ±1VP-P Differential Analog Input Voltage Range o 400MHz -3dB Input Bandwidth o On-Chip 2.048V Precision Bandgap Reference o User-Selectable Output Format—Two’s Complement or Offset Binary o Pin-Compatible 8-Bit and 10-Bit Upgrades Available Dual, 8-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs ________________________________________________________________ Maxim Integrated Products 1 N.C. N.C. OGND OVDD OVDD OGND N.C. N.C. D0B D1B D2B D3B COM VDD GND INA+ INA- VDD GND INB- INB+ GND VDD CLK 1 2 3 4 5 6 7 8 9 10 11 12 36 35 34 33 32 31 30 29 28 27 26 25 TQFP-EP MAX1195 Pin Configuration Ordering Information 19-2410; Rev 0; 4/02 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. Functional Diagram and Pin Compatible Upgrades table appear at end of data sheet. *EP = Exposed paddle Baseband I/Q Sampling Multichannel IF Sampling Ultrasound and Medical Imaging Battery-Powered Instrumentation WLAN, WWAN, WLL, MMDS Modems Set-Top Boxes VSAT Terminals PART TEMP RANGE PIN-PACKAGE MAX1195ECM -40 °C to +85°C 48 TQFP-EP* |
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