Overview
Features and Benefits
- Single-Supply Operation:
- +2.7V to +3.6V (MAX1240)
- +2.7V to +5.25V (MAX1241)
- 12-Bit Resolution
- Internal 2.5V Reference (MAX1240)
- Small Footprint: 8-Pin PDIP/SO Packages
- Low Power: 3.7µW (73ksps, MAX1240)
- 3mW (73ksps, MAX1241)
- 66µW (1ksps, MAX1241)
- 5µW (power-down mode)
- Internal Track/Hold
- SPI/QSPI/MICROWIRE 3-Wire Serial Interface
- Internal Clock
Product Details
The MAX1240/MAX1241 low-power, 12-bit analog-to-digital converters (ADCs) are available in 8-pin packages. The MAX1240 operates with a single +2.7V to +3.6V supply, and the MAX1241 operates with a single +2.7V to +5.25V supply. Both devices feature a 7.5µs successive-approximation ADC, a fast track/hold (1.5µs), an on-chip clock, and a high-speed, 3-wire serial interface.
Power consumption is only 37mW (VDD = 3V) at the 73ksps maximum sampling speed. A 2µA shutdown mode reduces power at slower throughput rates.
The MAX1240 has an internal 2.5V reference, while the MAX1241 requires an external reference. The MAX1241 accepts signals from 0V to VREF, and the reference input range includes the positive supply rail. An external clock accesses data from the 3-wire interface, which connects directly to standard microcontroller I/O ports. The interface is compatible with SPI™, QSPI™, and MICROWIRE™.
Excellent AC characteristics and very low power combined with ease of use and small package size make these converters ideal for remote-sensor and data-acquisition applications, or for other circuits with demanding power consumption and space requirements. The MAX1240/MAX1241 are available in 8-pin PDIP and SO packages.
Applications
- Battery-Powered Applications
- Instrumentation
- Isolated Data Acquisition
- Portable Data Logging
- Process Control
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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MAX1240 Reliability Data1/12/2023
Product Recommendations
MAX1240 Companion 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.
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Evaluation Boards
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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.