MAX1195ECM+D

The MAX1195 is a 3V, dual, 8-bit analog-to-digital converter (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 sampling rate of 40Msps. The T/H-driven input stages incorporate 400MHz (-3dB) input amplifiers. The converters may also be operated with single-ended inputs. In addition 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 control 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×7mm, 48-pin TQFP package, and is specified for the extended industrial (-40℃ to +85℃) temperature range.

Applications

• WLAN, WWAN, WLL, MMDS Modems
• Set-Top Boxes
• VSAT Terminals
• Baseband I/Q Sampling
• Multichannel IF Sampling
• Ultrasound and Medical Imaging
• Battery-Powered Instrumentation

Key features

• Single 2.7V to 3.6V Operation
• Excellent Dynamic Performance 48.5dB/46.7dB SINAD at fIN = 20MHz/200MHz 68.7dBc/55.7dBc SFDR at fIN = 20MHz/200MHz
• -72dB Interchannel Crosstalk at fIN = 20MHz
• Low Power 87mW (Normal Operation) 9mW (Sleep Mode) 0.3μW (Shutdown Mode)
• 0.05dB Gain and ±0.05° Phase Matching
• Wide ±1Vp-p Differential Analog Input Voltage Range
• 400MHz -3dB Input Bandwidth
• On-Chip 2.048V Precision Bandgap Reference
• User-Selectable Output Format—Two’s Complement or Offset Binary
• Pin-Compatible 8-Bit and 10-Bit Upgrades Available