MAX1119EKA+T

Analog To Digital Converters (ADC) Overview

The MAX1119EKA+T is a single-supply, low-power, dual-channel, serial 8-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated. It features an internal track/hold circuit and a fixed +4.096V voltage reference. The device operates within a supply voltage range of +4.5V to +5.5V and consumes 175µA at a sampling rate of 100ksps. It utilizes a 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols. The ADC provides 8-bit resolution with ±1 LSB integral nonlinearity and differential nonlinearity. It is housed in an 8-pin SOT-23 package and supports an operating temperature range from -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel architecture with integrated track/hold circuitry for simultaneous signal acquisition
• Built-in +4.096V internal voltage reference eliminating the need for external components
• Automatic power-down mode reducing supply current to less than 1µA when inactive
• Direct compatibility with standard microprocessor serial interfaces without additional logic

Analog To Digital Converters (ADC) Applications

• Low-power handheld portable devices
• Battery-powered test equipment
• System diagnostics
• Receive signal strength indicators
• 4mA to 20mA powered remote data acquisition systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix to ensure the correct package variant and temperature rating are selected. Confirm that the supply voltage requirements align with the +4.5V to +5.5V operational range specified for the MAX1119 variant. Check for RoHS compliance status if required by your manufacturing standards. Ensure the serial interface timing matches your system's clock constraints.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a compact, low-power solution is needed for converting two analog signals into digital data. The internal reference simplifies board layout compared to variants requiring external references. Consider the +4.5V minimum supply voltage constraint during power budgeting. Evaluate the 100ksps maximum sampling rate against your application's bandwidth requirements.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MAX1117/MAX1118/MAX1119 family of low-power, 8-bit, dual-channel ADCs. The MAX1119 specifically differs from the MAX1117 and MAX1118 by its higher supply voltage requirement (+4.5V to +5.5V) and its fixed internal reference voltage of +4.096V. All three variants share the same pinout and functional architecture but are optimized for different power supply environments.

Analog To Digital Converters (ADC) Replacement Considerations

MAX1117EKA+T: Requires lower supply voltage (+2.7V to +3.6V) and has a +2.048V internal reference. MAX1118EKA+T: Supports wider supply voltage (+2.7V to +5.5V) but requires an external reference input.