4-/6-/8-Channel, 16-/14-Bit, Simultaneous-Sampling ADCs

Industry's First Single-Supply Bipolar ADCs with High-Impedance Input

Please check latest availability status for a specific part variant.


The MAX11044/MAX11044B/MAX11045/MAX11045B/MAX11046/MAX11046B 16-bit and MAX11054/MAX11055/MAX11056 14-bit ADCs offer 4, 6, or 8 independent input channels. Featuring independent track and hold (T/H) and SAR circuitry, these parts provide simultaneous sampling at 250ksps for each channel.

The MAX11044/MAX11044B/MAX11045/MAX11045B/MAX11046/MAX11046B and MAX11054/MAX11055/MAX11056 accept a ±5V input. All inputs are overrange protected with internal ±20mA input clamps providing overrange protection with a simple external resistor. Other features include a 4MHz T/H input bandwidth, internal clock, and internal or external reference. A 20MHz, bidirectional, parallel interface provides the conversion results and accepts digital configuration inputs.

The MAX11044/MAX11044B/MAX11045/MAX11045B/MAX11046/MAX11046B and MAX11054/MAX11055/MAX11056 operate with a 4.75V to 5.25V analog supply and a separate flexible 2.7V to 5.25V digital supply for interfacing with the host without a level shifter. The MAX11044/MAX11044B/MAX11045/MAX11045B/MAX11046/MAX11046B are available in a 56-pin TQFN and 64-pin TQFP packages while the MAX11054/MAX11055/MAX11056 are available in TQFP only and operate over the extended -40°C to +85°C temperature range.

MAX11044, MAX11045, MAX11046: Functional Diagram MAX11044, MAX11045, MAX11046: Functional Diagram Enlarge+

Key Features

  • 16-Bit ADC (MAX11044/MAX11044B/MAX11045/MAX11045B/MAX11046/MAX11046B) and 14-Bit ADC (MAX11054/MAX11055/MAX11056)
    • 8-Channel ADC (MAX11046/MAX11046B/MAX11056)
    • 6-Channel ADC (MAX11045/MAX11045B/MAX11055)
    • 4-Channel ADC (MAX11044/MAX11044B/MAX11054)
  • Single Analog and Digital Supply
  • High-Impedance Inputs Up to 1GΩ
  • On-Chip T/H Circuit for Each Channel
  • Fast 3µs Conversion Time
  • High Throughput: 250ksps for Each Channel
  • 16-Bit/14-Bit, High-Speed, Parallel Interface
  • Internal Clocked Conversions
  • 10ns Aperture Delay
  • 100ps Channel-to-Channel T/H Matching
  • Low Drift, Accurate 4.096V Internal Reference Providing an Input Range of ±5V
  • External Reference Range of 3.0V to 4.25V, Allowing Full-Scale Input Ranges of ±4.0V to ±5.2V
  • 56-Pin (8mm x 8mm) TQFN and 64-Pin (10mm x 10mm) TQFP Packages
  • Evaluation Kit Available


  • Automatic Test Equipment
  • Multiphase Motor Control
  • Power-Factor Monitoring and Correction
  • Power-Grid Protection
  • Vibration and Waveform Analysis

See parametric specs for Precision ADCs (< 5Msps) (432)

Part NumberResolution
# Input ChannelsConv. Rate
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
External VREF
External VREF
Bipolar VIN
(ADC)(max)(nominal)(min)(max)(max)(See Notes)
MAX11044 164250SARµP/16S.E. Only4.09634.25592.3-1050.4
$10.41 @1k
MAX11045 166µP/1692.3-1050.4
$12.79 @1k
MAX11046 168µP/1692.3-1050.4
$17.09 @1k
MAX11054 144µP/1485.2-1040.13
$7.79 @1k
MAX11056 148µP/1485.2-1040.13
$11.24 @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.

MAX11046EVKIT: Evaluation Kit for the MAX11044, MAX11045, MAX11046, MAX11047, MAX11048, and MAX11049
Request Reliability Report for: MAX11055 
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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