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Low-Power, 90Msps, Dual 6-Bit ADC

Product Details

Key Features

Parametric specs for High-Speed ADCs (> 5Msps)
Resolution (bits) 6
# Input Channels 2
Sample Rate (Msps) (max) 90
AC Specs (MHz) (@ fIN) 20
SFDR (dBc) (min) 38
ENOB (bits) (min) 5.85
SINAD (dB) 37
DNL (±LSB) 0.25
INL (±LSB) 0.25
Package/Pins SSOP/36
Budgetary
Price (See Notes)
5.15
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Simplified Block Diagram

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Parameters

Parametric specs for High-Speed ADCs (> 5Msps)
Resolution (bits) 6
# Input Channels 2
Sample Rate (Msps) (max) 90
AC Specs (MHz) (@ fIN) 20
SFDR (dBc) (min) 38
ENOB (bits) (min) 5.85
SINAD (dB) 37
DNL (±LSB) 0.25
INL (±LSB) 0.25
Package/Pins SSOP/36
Budgetary
Price (See Notes)
5.15

Key Features

  • 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

Applications/Uses

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

Description

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.

Simplified Block Diagram

MAX1003: Functional Diagram MAX1003: 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 .