MAX1425

10-Bit, 20Msps ADC

Low-Power, Low-Distortion 10-Bit ADCs Deliver 61dB SNR


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Description

The MAX1425 10-bit, monolithic analog-to-digital converter (ADC) is capable of a 20Msps sampling rate. This device features an internal track-and-hold (T/H) amplifier for excellent dynamic performance; at the same time, it minimizes the number of external components. Low input capacitance of only 8pF minimizes input drive requirements. A wide input bandwidth (up to 150MHz) makes this device suitable for digital RF/IF downconverter applications employing undersampling techniques.

The MAX1425 employs a differential pipelined architecture with a wideband T/H amplifier to maximize throughput while limiting power consumption to only 172mW. The MAX1425 generates an internal +2.5V reference that supplies three additional reference voltages (+3.25V, +2.25V, and +1.25V). These reference voltages provide a differential input range of +2V to -2V. The analog inputs are biased internally to correct the DC level, eliminating the need for external biasing on AC-coupled applications.

A separate +3V digital logic supply input allows for separation of digital and analog circuitry. The output data is in two's complement format. The MAX1425 is available in the space-saving 28-pin SSOP package. For a pin-compatible version at a lower data rate, refer to the MAX1426 data sheet. For a higher data rate, refer to the MAX1424 data sheet.
MAX1425: Functional Diagram MAX1425: Functional Diagram Enlarge+

Key Features

  • Differential Inputs for High Common-Mode Noise Rejection
  • Signal-to-Noise Ratio
    • 61dB (at fIN = 2MHz)
    • 59.3dB (at fIN = 10MHz)
  • Internal +2.5V Reference
  • 150MHz Input Bandwidth
  • Wide ±2V Input Range
  • Low Power Consumption: 172mW
  • Separate Digital Supply Input for 3V Logic Compatibility
  • Single +5V Supply Operation Possible

Applications/Uses

  • CCD Pixel Processing
  • IF and Baseband Digitization
  • IR Focal Plane Arrays
  • Medical Ultrasound Imaging
  • Radar
  • Set-Top Boxes
Part NumberInput Chan.Resolution
(bits)
Sample Rate
(Msps)
SFDR
(dBc)
ENOB
(bits)
SINAD
(dB)
SNR
(dB)
THD
(dB)
DNL
(±LSB)
INL
(±LSB)
Full Pwr. BW
(MHz)
ICC
(mA)
Data Bus InterfacePackage/Pins
max ≥minminmintyp
MAX1425 11020699.55959-6911.540031.5µP/10
SSOP/28
See All High-Speed ADCs (> 5Msps) (53)
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.

Technical Documents

App Note 3292 Crunching FFTs with Microsoft Excel
Tutorial 1023 Understanding Pipelined ADCs

Quality and Environmental Data

Request Reliability Report for: MAX1425 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX1425EAI+
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    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


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