MAX1338

14-Bit, 4-Channel, Software-Programmable, Multiranging, Simultaneous-Sampling ADC

Industry's Only ADC with Software-Selectable Input Range and Simultaneous-Sampling Reduces Board Space and Offers 14 Bits of Resolution


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Description

The MAX1338 14-bit, analog-to-digital converter (ADC) offers four simultaneously sampled, fully differential input channels, with independent track-and-hold (T/H) circuitry for each channel. The input channels are individually software programmable for input ranges of ±10V, ±5V, ±2.5V, and ±1.25V. The input channels feature fault tolerance to ±17V. The internal T/H circuits have a 16ns aperture delay and 100ps aperture-delay matching.

A 14-bit parallel bus provides the conversion result with a maximum per-channel output rate of 150ksps (600ksps for all four channels). The MAX1338 has an on-board oscillator and 2.5V internal reference. An external clock and/or reference can also be used.

The MAX1338 operates from a +5V supply for analog inputs and digital core. The device operates from a +2.7V to +5.25V supply for the digital I/O lines. The MAX1338 features two power-saving modes: standby mode and shutdown mode. Standby mode allows rapid wake-up and reduces quiescent current to 4mA (typ), and shut-down mode reduces sleep current to less than 10µA (typ).

The MAX1338 is available in an 8mm x 8mm x 0.8mm, 56-pin, thin QFN package. The device operates over the extended -40°C to +85°C temperature range.
MAX1338: Typical Operating Circuit MAX1338: Typical Operating Circuit Enlarge+

Key Features

  • 150ksps Sample Rate per Channel
  • All Four Input Channels Simultaneously Sampled
    • 16ns Aperture Delay
    • 100ps Aperture-Delay Matching
  • Channel-Independent Software-Selectable Input Range: ±10V, ±5V, ±2.5V, ±1.25V
  • ±17V Fault-Tolerant Inputs
  • Dynamic Performance at 10kHz Input
    • SNR: 77dB
    • SINAD: 76dB
    • SFDR: 98dBc
    • THD: -83dBc
  • DC Performance
    • INL: ±2 LSB
    • DNL: ±1 LSB
    • Offset Error: ±4 LSB
    • Gain Error: ±0.1% FSR
  • 14-Bit Parallel Interface
  • Internal Clock and Reference Voltage
  • +5V Analog and Digital Supplies
  • +2.7V to +5.25V Digital I/O Supply
  • 56-Pin Thin QFN Package (8mm x 8mm x 0.8mm)

Applications/Uses

  • Motor Control: 3-Phase Voltage, Current, and Power Measurement
  • Multiple-Channel Data Recorders
  • Optical Communication Equipment
  • Vibration Analysis

See parametric specs for Precision ADCs (< 5Msps) (437)


Part NumberResolution
(bits)
Input Chan.Conv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
(V)
External VREF
(V)
External VREF
(V)
Bipolar VIN
(±V)
SNR
(dB)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalminmaxmaxSee Notes
MAX1338 144150SARµP/14Diff. Only2.5231077-831
TQFN/56
$90.20 @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.
Request Reliability Report for: MAX1338 
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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