1. Products
  2. A/D Converters (ADC)
  3. Precision A/D Converters
  4. Multiplexed A/D Converters
  5. MAX1329


Features and Benefits

  • 1.8V to 3.6V Single Digital Supply Operation
  • Internal Charge Pump for Analog Circuits (2.7V to 5.5V)
  • 12-Bit SAR ADC
    • 12 Bits, 312ksps, No Missing Codes
    • 16 Bits, 1000sps, DSP Mode
    • 16-Word FIFO and 20-Bit Accumulator
    • PGA with Gains of 1, 2, 4, and 8
    • Unipolar and Bipolar Modes
    • 16-Input Differential Multiplexer
  • Dual 12-Bit Force-Sense DACs
    • 16-Word FIFO (DACA Only)
  • Independent Voltage References for ADC and DACs
    • Internal 2.5V Reference
    • Adjustable Reference Buffers Provide 1.25V, 2.048V, or 2.5V
  • System Support
    • ADC Alarm Register
    • Uncommitted Op Amps
    • Dual SPDT Analog Switches
    • Internal/External Temperature Sensor
    • Internal Oscillator with Clock I/O
    • Digital Programmable I/O
    • Analog Programmable I/O
    • Programmable Interrupts
    • Accurate Supply Voltage Measurement
    • Programmable Dual Voltage Monitors
      • SPI-/QSPI-/MICROWIRE-Compatible, 4-Wire Serial Interface
      • Space-Saving, 6mm x 6mm, 40-Pin Thin QFN Package

Product Details

The MAX1329/MAX1330 are smart data acquisition systems (DASs) based on a successive approximation register (SAR) analog-to-digital converter (ADC). These devices are highly integrated, offering an ADC, digital-to- analog converters (DACs), operational amplifiers (op amps), voltage reference, temperature sensors, and analog switches in the same device.

The MAX1329/MAX1330 offer a single ADC with a reference buffer. The ADC is capable of operating in one of two user-programmable modes. In normal mode, the ADC provides up to 12 bits of resolution at 312ksps. In DSP mode, the ADC provides up to 16 bits of resolution at 1000sps. The ADC accepts one external differential input or two external single-ended inputs as well as inputs from other circuitry on-board. An on-chip programmable gain amplifier (PGA) follows the analog inputs, reducing external circuitry requirements. The PGA gain is adjustable from 1V/V to 8V/V.

The MAX1329/MAX1330 operate from a 1.8V to 3.6V digital power supply. Shutdown and sleep modes are available for power-saving applications. Under normal operation, an internal charge pump boosts the supply voltage for the analog circuitry when the supply is < 2.7V.

The MAX1329/MAX1330 offer four analog programmable I/Os (APIOs) and four digital programmable I/Os (DPIOs). The APIOs can be configured as general-purpose logic inputs and outputs, as a wake-up function, or as a buffer and level shifter for the serial interface to communicate with slave devices powered by the analog supply, AVDD. The DPIOs can be configured as general-purpose logic inputs and outputs as well as inputs to directly control the ADC conversion rate, the analog switches, the loading of the DACs, wake-up, sleep, and shutdown modes, and as an interrupt for when the analog-to-digital conversion is complete.

The MAX1329 includes dual 12-bit force-sense DACs with a programmable reference buffer and one op amp. The MAX1330 provides one 12-bit force-sense DAC with a programmable reference buffer and two op amps. For the MAX1329/MAX1330, a 16-word DAC FIFO can be used with the DACA for direct digital synthesis (DDS) of waveforms.

The 4-wire serial interface is compatible with SPI™, QSPI™, and MICROWIRE™.


  • Battery-Powered and Portable Devices
  • Data Acquisition Systems
  • Electrochemical and Optical Sensors
  • Low-Cost CODECs
  • Medical Instruments

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.

Product Recommendations

MAX1329 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.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
MAX1329BETL+ Material Declaration Reliability Data 40-LFCSP-6X6X0.75
Wafer Fabrication Data

PCN-PDN Information

Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

Sample & Buy

Ordering FAQs

See our Ordering FAQs for answers to questions about online orders, payment options and more.


Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Price Table Help