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MAX1191：Ultra-Low-Power, 7.5Msps, Dual, 8-Bit ADC

The MAX1191 is an ultra-low-power, dual, 8-bit, 7.5Msps analog-to-digital converter (ADC). The device features two fully differential wideband track-and-hold (T/H) inputs. These inputs have a 440MHz bandwidth and accept fully differential or single-ended signals. The MAX1191 delivers a typical signal-to-noise and distortion (SINAD) of 48.6dB at an input frequency of 1.875MHz and a sampling rate of 7.5Msps while consuming only 12mW. This ADC operates from a 2.7V to 3.6V analog power supply. A separate 1.8V to 3.6V supply powers the digital output driver. In addition to ultra-low operating power, the MAX1191 features three power-down modes to conserve power during idle periods. Excellent dynamic performance, ultra-low power, and small size make the MAX1191 ideal for applications in imaging, instrumentation, and digital communications. An internal 1.024V precision bandgap reference sets the full-scale range of the ADC to ±0.512V. A flexible reference structure allows the MAX1191 to use its internal reference or accept an externally applied reference for applications requiring increased accuracy. The MAX1191 features parallel, multiplexed, CMOS-compatible tri-state outputs. The digital output format is offset binary. A separate digital power input accepts a voltage from 1.8V to 3.6V for flexible interfacing to different logic levels. The MAX1191 is available in a 5mm x 5mm, 28-pin thin QFN package, and is specified for the extended industrial (-40°C to +85°C) temperature range. For higher sampling frequency applications, refer to the MAX1195-MAX1198 dual 8-bit ADCs. See a parametric table of the complete family of pin-compatible, 8-bit high-speed ADCs.

Key Features Ultra-Low Power 12mW (Normal Operation: 7.5Msps) 0.3µW (Shutdown Mode) Excellent Dynamic Performance 48.7dB SNR at fIN = 1.875MHz 69dBc SFDR at fIN = 1.875MHz 2.7V to 3.6V Single Analog Supply 1.8V to 3.6V TTL/CMOS-Compatible Digital Outputs Fully Differential or Single-Ended Analog Inputs Internal/External Reference Option Multiplexed CMOS-Compatible Tri-State Outputs 28-Pin Thin QFN Package Evaluation Kit Available (Order MAX1193EVKIT)

MAX1191: Functional Diagram Applications/Uses Battery-Powered Portable Instruments IQ Baseband Sampling Low-Power Video Ultrasound and Medical Imaging WLAN, Mobile DSL, WLL Receiver

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Parametrics

Related Products

• MAX1192：Ultra-Low-Power, 22Msps, Dual 8-Bit ADC
• MAX1193：Ultra-Low-Power, 45Msps, Dual 8-Bit ADC
• MAX1198：Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs
• MAX1195：Dual, 8-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs

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