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MAX1195：Dual, 8-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs

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 x 7mm, 48-pin TQFP package, and is specified for the extended industrial (-40°C to +85°C) temperature range. See a parametric table of the complete family of pin-compatible, 8-bit high-speed ADCs. 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.

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

MAX1195: Functional Diagram Applications/Uses Baseband I/Q Sampling Battery-Powered Applications Multichannel IF Sampling Set-Top Boxes Ultrasound and Medical Imaging VSAT Terminals WLAN, WWAN, WLL, MMDS Modems

DataSheet

Parametrics

Related Products

• MAX1196：Dual 8-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Multiplexed Parallel Outputs
• MAX1198：Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs
• MAX1197：Dual, 8-Bit, 60Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs

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