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

Product Details

Key Features

Parametric specs for Precision ADCs (< 5Msps)
Package/Pins TQFN/28
Parametric specs for High-Speed ADCs (> 5Msps)
Resolution (bits) 8
# Input Channels 2
Sample Rate (Msps) (max) 7.5
Data Bus Interface µP/10
SFDR (dBc) (min) 69
SINAD (dB) 48.6
SNR (dB) 48.7
THD (dB) -68
DNL (±LSB) 0.13
INL (±LSB) 0.15
Package/Pins TQFN/28
Budgetary
Price (See Notes)
4.11
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Simplified Block Diagram

Technical Docs

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Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Package/Pins TQFN/28
Parametric specs for High-Speed ADCs (> 5Msps)
Resolution (bits) 8
# Input Channels 2
Sample Rate (Msps) (max) 7.5
Data Bus Interface µP/10
SFDR (dBc) (min) 69
SINAD (dB) 48.6
SNR (dB) 48.7
THD (dB) -68
DNL (±LSB) 0.13
INL (±LSB) 0.15
Package/Pins TQFN/28
Budgetary
Price (See Notes)
4.11

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)

Applications/Uses

  • Battery-Powered Portable Instruments
  • IQ Baseband Sampling
  • Low-Power Video
  • Ultrasound and Medical Imaging
  • WLAN, Mobile DSL, WLL Receiver

Description

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.

Simplified Block Diagram

MAX1191: Functional Diagram MAX1191: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.