Features and Benefits

  • Two Matched 6-Bit ADCs
  • High Sampling Rate: 90Msps per ADC
  • Low Power Dissipation: 350mW
  • Excellent Dynamic Performance:
    • 5.85 ENOB with 20MHz Analog Input
    • 5.7 ENOB with 50MHz Analog Input
  • ±1/4LSB INL and DNL (typ)
  • Internal Bandgap Voltage Reference
  • Internal Oscillator with Overdrive Capability
  • 55MHz (-0.5dB) Bandwidth Input Amplifiers with True Differential Inputs
  • User-Selectable Input Full-Scale Range (125mVp-p, 250mVp-p, or 500mVp-p)
  • 1/4LSB Channel-to-Channel Offset Matching (typ)
  • 0.1dB Gain and 0.5° Phase Matching (typ)
  • Single-Ended or Differential Input Drive
  • Flexible, 3.3V, CMOS-Compatible Digital Outputs

Product Details

The MAX1003 is a dual, 6-bit analog-to-digital converter (ADC) that combines high-speed, low-power operation with a user-selectable input range, an internal reference, and a clock oscillator. The dual parallel ADCs are designed to convert in-phase (I) and quadrature (Q) analog signals into two 6-bit, offset-binary-coded digital outputs at sampling rates up to 90Msps. The ability to directly interface with baseband I and Q signals makes the MAX1003 ideal for use in direct-broadcast satellite, VSAT, and QAM16 demodulation applications.

The MAX1003 input amplifiers feature true differential inputs, a -0.5dB analog bandwidth of 55MHz, and user-programmable input full-scale ranges of 125mVp-p, 250mVp-p, or 500mVp-p. With an AC-coupled input signal, matching performance between input channels is typically better than 0.1dB gain, 1/4LSB offset, and 0.5° phase. Dynamic performance is 5.85 effective number of bits (ENOB) with a 20MHz analog input signal, or 5.7 ENOB with a 50MHz signal.

The MAX1003 operates with +5V analog and +3.3V digital supplies for easy interfacing to +3.3V-logic-compatible digital signal processors and microprocessors. It comes in a 36-pin SSOP package.


  • Cable Television Set-Top Boxes
  • Direct-Broadcast Satellite (DBS) Receiver
  • VSAT Receivers
  • Wide Local Area Networks (WLANs)

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (2)

Product Recommendations

MAX1003 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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