Dual, 6-Bit, 800Msps ADC with On-Chip, Wideband Input Amplifier

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The MAX105 is a dual, 6-bit, analog-to-digital converter (ADC) designed to allow fast and precise digitizing of in-phase (I) and quadrature (Q) baseband signals. The MAX105 converts the analog signals of both I and Q components to digital outputs at 800Msps while achieving a signal-to-noise ratio (SNR) of typically 37dB with an input frequency of 200MHz, and an integral nonlinearity (INL) and differential nonlinearity (DNL) of ±0.25 LSB. The MAX105 analog input preamplifiers feature a 400MHz, -0.5dB, and a 1.5GHz, -3dB analog input bandwidth. Matching channel-to-channel performance is typically 0.04dB gain, 0.1 LSB offset, and 0.2 degrees phase. Dynamic performance is 36.4dB signal-to-noise plus distortion (SINAD) with a 200MHz analog input signal and a sampling speed of 800MHz. A fully differential comparator design and encoding circuits reduce out-of-sequence errors, and ensure excellent metastable performance of only one error per 1016 clock cycles.

In addition, the MAX105 provides LVDS digital outputs with an internal 6:12 demultiplexer that reduces the output data rate to one-half the sample clock rate. Data is output in two's complement format. The MAX105 operates from a +5V analog supply and the LVDS output ports operate at +3.3V. The data converter's typical power dissipation is 2.6W. The device is packaged in an 80-pin, TQFP package with exposed paddle, and is specified for the extended (-40° C to +85°C) temperature range. For a lower-speed, 400Msps version of the MAX105, please refer to the MAX107 data sheet.
MAX105: Pin Configuration MAX105: Pin Configuration Enlarge+

Key Features

  • Two Matched 6-Bit, 800Msps ADCs
  • Excellent Dynamic Performance
    • 36.4dB SINAD at fIN ≈ 200MHz and
    • fCLK ≈ 800MHz
  • Typical INL and DNL: ±0.25 LSB
  • Channel-to-Channel Phase Matching: ±0.2°
  • Channel-to-Channel Gain Matching: ±0.04dB
  • 6:12 Demultiplexer reduces the Data Rates to 400MHz
  • Low Error Rate: 1016 Metastable States at 800Msps
  • LVDS Digital Outputs in Two's Complement Format


  • Communication Systems
  • Test Instrumentation
  • VSAT Receivers
  • Wireless Local Area Networks (WLANs)

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 ≥@ fINminminmintypSee Notes
MAX105 26800200455.836.437-
$39.87 @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.
Product Reliability Reports: MAX105.pdf 
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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Related Resources

Type ID Title
Evaluation Board3119MAX105EVKIT Evaluation Kit for the MAX105 and MAX107