Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs

Please check latest availability status for a specific part variant.


The MAX1198 is a 3.3V, dual, 8-bit analog-to-digital converter (ADC) featuring fully differential wideband track-and-hold (T/H) inputs, driving two ADCs. The MAX1198 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 264mW, while delivering a typical signal-to-noise and distortion (SINAD) of 48.1dB at an input frequency of 50MHz and a sampling rate of 100Msps. 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 MAX1198 features a 3.2mA sleep mode, as well as a 0.15µA 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 MAX1198 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 MAX1198 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 MAX1180 data sheet. With the N.C. pins of the MAX1198 internally pulled down to ground, this ADC becomes a drop-in replacement for the MAX1180.
MAX1198: Functional Diagram MAX1198: Functional Diagram Enlarge+

Key Features

  • Single 2.7V to 3.6V Operation
  • Excellent Dynamic Performance
    • 48.1dB/47.6dB SINAD at fIN = 50MHz/200MHz
    • 66dBc/61.5dBc SFDR at fIN = 50MHz/200MHz
  • -72dB Interchannel Crosstalk at fIN = 50MHz
  • Low Power
    • 264mW (Normal Operation)
    • 10.6mW (Sleep Mode)
    • 0.5µW (Shutdown Mode)
  • 0.05dB Gain and ±0.1° 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


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

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

Part NumberInput Chan.Resolution
Sample Rate
Full Pwr. BW
Data Bus InterfacePackage/PinsBudgetary
max ≥minminSee Notes
MAX1198 281006648.148.3-640.20.3400µP/10
$11.12 @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.

MAX1198EVKIT: Evaluation Kit for the MAX1195, MAX1196, MAX1197, and MAX1198

Tools & Models

  • MAX1198 IBIS Model
  • Request Reliability Report for: MAX1198 
    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.

    Quality Management System >
    Environmental Management System >


    Related Resources