MAX1276

1.8Msps, Single-Supply, Low-Power, True-Differential, 12-Bit ADCs with Internal Reference


Please check latest availability status for a specific part variant.

Description

The MAX1276/MAX1278 are low-power, high-speed, serial-output, 12-bit, analog-to-digital converters (ADCs) that operate at up to 1.8Msps and have an internal reference. These devices feature true-differential inputs, offering better noise immunity, distortion improvements, and a wider dynamic range over single-ended inputs. A standard SPI™/QSPI™/MICROWIRE™ interface provides the clock necessary for conversion. These devices easily interface with standard digital signal processor (DSP) synchronous serial interfaces.

The MAX1276/MAX1278 operate from a single +4.75V to +5.25V supply voltage. The MAX1276/MAX1278 include a 4.096V internal reference. The MAX1276 has a unipolar analog input, while the MAX1278 has a bipolar analog input. These devices feature a partial power-down mode and a full power-down mode for use between conversions, which lower the supply current to 2mA (typ) and 1µA (max), respectively. Also featured is a separate power-supply input (VL), which allows direct interfacing to +1.8V to VDD digital logic. The fast conversion speed, low-power dissipation, excellent AC performance, and DC accuracy (±1.25 LSB INL) make the MAX1276/MAX1278 ideal for industrial process control, motor control, and base-station applications.

The MAX1276/MAX1278 come in a 12-pin TQFN package, and are available in the extended (-40°C to +85°C) temperature range.
MAX1276, MAX1278: Typical Operating Circuit MAX1276, MAX1278: Typical Operating Circuit Enlarge+

Key Features

  • 1.8Msps Sampling Rate
  • Only 55mW (typ) Power Dissipation
  • Only 1µA (max) Shutdown Current
  • High-Speed, SPI-Compatible, 3-Wire Serial Interface
  • 70dB S/(N + D) at 525kHz Input Frequency
  • Internal True-Differential Track/Hold (T/H)
  • Internal 4.096V Reference
  • No Pipeline Delays
  • Small 12-Pin TQFN Package

Applications/Uses

  • Bill Validation
  • Communications
  • Data Acquisition
  • Motor Control
  • Portable Instrumentation
Part NumberResolution
(bits)
Input Chan.Conv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
(V)
Unipolar VIN
(V)
Bipolar VIN
(±V)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalmaxmaxSee Notes
MAX1276 1211800SARSPIDiff. Only4.0964.0962.048-801.25
TQFN/12
$5.31 @1k
MAX1278 
TQFN/12
$5.06 @1k
See All Precision ADCs (< 5Msps) (440)
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.


MAX1276EVKIT: Evaluation Kit/Evaluation System for the MAX1070, MAX1071, MAX1072, MAX1075–MAX1079, MAX1224, MAX1225, and MAX1274–MAX1279

Technical Documents

App Note 4620 Set Your Holiday Lights to Music
App Note 4442 Logarithmic LED Panel Display Has 72dB Range

Quality and Environmental Data

Request Reliability Report for: MAX1276 
Lead-Free Package Tin (Sn) Whisker Reports
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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