MAX139 (4)
MAX139 is available from Analog Devices at Xecor. Designed for precise analog-to-digital conversion with integrated LED display drivers, the MAX139 offers key features such as single-supply operation from +2.5V to +7.0V, the ability to measure both positive and negative input voltages, and an on-board charge-pump voltage inverter. Available in a 40-PDIP package, it is ideal for applications like +3V powered DMMs, +5V powered panel meters, digital thermometers, and portable monitors. Whether used in instrumentation, weigh scales, or portable monitoring systems, this series ensures high performance, flexibility, and efficiency for demanding applications. Xecor is an authorized distributor for Analog Devices. Please view our extensive selection of the MAX139 series below.
| Part Number | Description | Package | Inventory | Add To Bom |
|---|---|---|---|---|
| MAX139EPL+ | 1-Channel Single ADC Dual Slope 3 1/2Digit LED 40-Pin PDIP W Tube | DIP-40 | 4,006 | |
| MAX139CMH+C10164 | Industrial-Strength Data Acquisition and Display | MQFP-44 | 4,388 | |
| MAX139EQH+D | LED Display Drivers 3 1/2 Digit ADC with Reference, Charge Pump, and Direct LED Drivers | PLCC-44 | 5,044 | |
| MAX139CPL+ | High-precision 3.5 digit ADC for accurate readings | PDIP-40 | 6,269 |
Key Featrues
Single Supply Operation (2.5V to 7V): This feature allows the device to operate efficiently from a single power supply, simplifying circuit design and reducing the need for multiple voltage sources. It enhances portability and makes the device suitable for battery-powered applications like portable monitors and digital thermometers.
Charge-Pump Voltage Inverter: The integrated charge-pump inverter enables the device to measure both positive and negative input voltages, even when powered by a single supply. This expands its use cases to applications requiring bidirectional voltage measurement, such as instruments and weigh scales.
Internal Bandgap Reference: The built-in bandgap reference ensures stable and accurate voltage measurements, improving the precision of the ADC. This feature is particularly beneficial for applications like panel meters and DMMs, where high accuracy is critical.
On-Board Display Driver: The integrated display driver supports direct connection to LED or LCD displays, reducing the need for external components and simplifying system design. This feature enhances efficiency and reduces the overall footprint in applications like digital thermometers and portable monitors.
Low Segment Current (MAX140): This feature minimizes power consumption in display segments, making the device more energy-efficient. It is ideal for battery-powered or low-power applications, extending operational life and reducing maintenance requirements.
Charge-Pump Voltage Inverter: The integrated charge-pump inverter enables the device to measure both positive and negative input voltages, even when powered by a single supply. This expands its use cases to applications requiring bidirectional voltage measurement, such as instruments and weigh scales.
Internal Bandgap Reference: The built-in bandgap reference ensures stable and accurate voltage measurements, improving the precision of the ADC. This feature is particularly beneficial for applications like panel meters and DMMs, where high accuracy is critical.
On-Board Display Driver: The integrated display driver supports direct connection to LED or LCD displays, reducing the need for external components and simplifying system design. This feature enhances efficiency and reduces the overall footprint in applications like digital thermometers and portable monitors.
Low Segment Current (MAX140): This feature minimizes power consumption in display segments, making the device more energy-efficient. It is ideal for battery-powered or low-power applications, extending operational life and reducing maintenance requirements.
Applications
Portable Digital Multimeter (DMM): The MAX139 is perfect for portable digital multimeters due to its 3.5-digit ADC and single-supply operation from +2.5V to +7V. Its ability to measure both positive and negative input voltages, combined with the charge-pump voltage inverter, ensures accurate readings in compact, battery-powered devices for field measurements and diagnostics.
Panel Meters for Industrial Instruments: The MAX139 is well-suited for panel meters in industrial environments, where its on-board LED display driver and internal bandgap reference simplify design and improve accuracy. Its robust performance and single-supply operation make it ideal for monitoring voltage, current, or other parameters in control panels and instrumentation systems.
Digital Thermometers: With its precise 3.5-digit ADC and ability to operate from a single supply, the MAX139 is an excellent choice for digital thermometers. Its low power consumption and charge-pump voltage inverter enable accurate temperature measurements in portable or battery-powered devices, making it ideal for medical, environmental, or industrial applications.
Weigh Scales and Load Cells: The MAX139 is ideal for weigh scales and load cell applications, where its high-resolution ADC and ability to measure small voltage changes ensure accurate weight readings. Its single-supply operation and charge-pump voltage inverter make it suitable for portable or low-power designs, such as handheld scales or industrial weighing systems.
Panel Meters for Industrial Instruments: The MAX139 is well-suited for panel meters in industrial environments, where its on-board LED display driver and internal bandgap reference simplify design and improve accuracy. Its robust performance and single-supply operation make it ideal for monitoring voltage, current, or other parameters in control panels and instrumentation systems.
Digital Thermometers: With its precise 3.5-digit ADC and ability to operate from a single supply, the MAX139 is an excellent choice for digital thermometers. Its low power consumption and charge-pump voltage inverter enable accurate temperature measurements in portable or battery-powered devices, making it ideal for medical, environmental, or industrial applications.
Weigh Scales and Load Cells: The MAX139 is ideal for weigh scales and load cell applications, where its high-resolution ADC and ability to measure small voltage changes ensure accurate weight readings. Its single-supply operation and charge-pump voltage inverter make it suitable for portable or low-power designs, such as handheld scales or industrial weighing systems.
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