MAX11040K
24-/16-Bit, 4-Channel, Simultaneous-Sampling, Cascadable, Sigma-Delta ADCs
Sigma-Delta ADCs Cascadable Up to 32 Simultaneous Channels
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Overview
Features and Benefits
- Feature Set Ideal for Energy Measurement Systems
- Four Fully Differential Simultaneously Sampled Channels
- Cascadable for Up to 32 Channels of Simultaneous Sampling
- Programmable Sampling Phase for Phase Shift Compensation
- 0 to 333µs in 1.33µs Steps
- Programmable Output Data Rate with 0.065% Resolution
- Excellent Performance for High-Accuracy Measurement Applications
- 117dB SNR at 1ksps
- 106dB SNR at 16ksps
- 0.25% Error Over a 1000:1 Dynamic Range
- ±2.2V Full-Scale Input Range
- Single-Supply Operation and Protected Inputs for Design Simplicity and Robustness
- 3.0V to 3.6V Analog Supply Voltage
- 2.7V to VAVDD Digital Supply Voltage
- ±6V Overvoltage Protected Inputs
- -40°C to +105°C Operating Temperature Range
Product Details
The MAX11040K/MAX11060 are 24-/16-bit, 4-channel, simultaneous-sampling, sigma-delta analog-to-digital converters (ADCs). The devices allow simultaneous sampling of as many as 32 channels using a built-in cascade feature to synchronize as many as eight devices. The serial interface of the devices allows reading data from all the cascaded devices using a single command. Four modulators simultaneously convert each fully differential analog input with a programmable data output rate ranging from 0.25ksps to 64ksps. The devices achieve 106dB SNR at 16ksps and 117dB SNR at 1ksps (MAX11040K). The devices operate from a single +3V supply. The differential analog input range is ±2.2V when using the internal reference; an external reference is optional. Each input is overvoltage protected up to ±6V without damage. The devices use an internal crystal oscillator or an external source for clock.
The devices are compatible with SPI, QSPI™, MICROWIRE®, and DSP-compatible 4-wire serial interfaces. An on-board interface logic allows one serial interface (with a single chip select) to control up to eight cascaded devices or 32 simultaneous sampling analog input channels.
The devices are ideally suited for power-management systems. Each channel includes an adjustable sampling phase enabling internal compensation for phase shift due to external dividers, transformers, or filters at the inputs. The output data rate is adjustable with a 0.065% resolution (at 16ksps or below) to track the varying frequency of a periodic input. An active-low SYNC input allows periodic alignment of the conversion timing of multiple devices with a remote timing source.
The devices are available in a 38-pin TSSOP package specified over the -40°C to +105°C industrial temperature range.
Applications
- Industrial Data-Acquisition Systems
- Medical Instrumentation
- Multiphase Power Systems
- Power-Protection Relay Equipment
Product Categories
Product Lifecycle
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.
Evaluation Kits (2)
Documentation & Resources
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MAX11040K Reliability Data1/12/2023PDF32K
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NEW
Signal Conditioning for a Sigma-Delta ADC in Industrial Multichannel Data Acquisition Systems3/7/2023
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The Basics of Using the MAX11254/MAX11259 24-Bit ADCs with Integrated PGA for Sensor-Rich Applications5/31/2017
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Smart Monitoring Improves Distribution-Grid Reliability3/7/2014
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Process High-Voltage Input Levels into a Low-Voltage ADC Without Losing Much SNR4/16/2013
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24-Bit Sigma-Delta ADC Reduces the Requirement for an Analog Front-End (AFE) for ECG/EKG Applications10/22/2012
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Reduce System Cost for Advanced Powerline Monitoring by Leveraging High-Performance, Simultaneous-Sampling ADCs9/28/2009
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Overview of the MAX11040K 24-Bit Simultaneous-Sampling, Sigma-Delta ADC9/25/2008
Tools & Simulations
Software Development
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.