Ultra-Low-Power, 10Msps, 8-Bit ADC

Ultra-Low-Power ADC Ideal for Digital Audio Broadcast Receiver System

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The MAX19191 is an ultra-low-power, 8-bit, 10Msps analog-to-digital converter (ADC). The device features a fully differential wideband track-and-hold (T/H) input. This input has a 440MHz bandwidth and accepts fully differential or single-ended signals. The MAX19191 delivers a typical signal-to-noise and distortion (SINAD) of 48.6dB at an input frequency of 1.875MHz and a sampling rate of 10Msps while consuming only 15.3mW. 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 MAX19191 features three power-down modes to conserve power during idle periods. Excellent dynamic performance, ultra-low power, and small size make the MAX19191 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 MAX19191 to use its internal reference or accept an externally applied reference for applications requiring increased accuracy.

The MAX19191 features parallel, CMOS-compatible three-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 MAX19191 is available in a 5mm × 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. For a dual-channel, pin-compatible version, refer to the MAX19192 data sheet.
MAX19191: Functional Diagram MAX19191: Functional Diagram Enlarge+

Key Features

  • Ultra-Low Power
    • 15.3mW (Normal Operation: 10Msps)
    • 2µW (Shutdown Mode)
  • Excellent Dynamic Performance
    • 48.6dB SNR at fIN = 1.875MHz
    • 70dBc 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 Three-State Outputs
  • 28-Pin Thin QFN Package
  • Evaluation Kit Available (Order MAX19191EVKIT+)


  • Battery-Powered Portable Instruments
  • Digital Audio Receiver Front-End
  • Low-Power Video
  • Ultrasound and Medical Imaging
  • WLAN, Mobile DSL, WLL Receiver

See parametric specs for High-Speed ADCs (> 5Msps) (50)

Part NumberInput Chan.Resolution
Sample Rate
AC Specs
Full Pwr. BW
Data Bus InterfacePackage/PinsBudgetary
max ≥@ fINminminSee Notes
MAX19191 18104407048.648.6-690.120.14440µP/8
$3.51 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX19191EVKIT: Evaluation Kit for the MAX19191
Request Reliability Report for: MAX19191 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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