Analog Devices Inc./Maxim Integrated MAX1113EEE+T

Overview

The MAX1113EEE+T from Maxim Integrated is a low-power, 8-bit, 4-channel analog-to-digital converter (ADC) with internal track/hold, 4.096V reference, SPI/QSPI/MICROWIRE-compatible serial interface, and software-configurable unipolar/bipolar and single-ended/differential input modes. It operates from a single 4.5V–5.5V supply, draws only 135µA at 50ksps, and targets portable data logging and hand-held measurement systems.

For engineers reviewing the MAX1113EEE+T datasheet, MAX1113EEE+T pinout, MAX1113EEE+T application, or MAX1113EEE+T equivalent, key selection criteria include its 4-channel analog input flexibility, 50ksps sampling rate with internal clock, ±1 LSB total unadjusted error, and QSOP-16 package compatibility with space-constrained embedded sensor interfaces.

Technical Context

The MAX1113EEE+T employs successive-approximation register (SAR) architecture with integrated track/hold and programmable clock source (internal or external). Its analog front-end supports pseudo-differential sampling via configurable channel pairs (CH0/CH1, CH2/CH3), with COM pin establishing common-mode reference for single-ended operation.

Conversion control is managed through an 8-bit software-programmable control byte defining channel selection, unipolar/bipolar mode, single-ended/differential mode, and power-down state. The serial interface operates in master-slave configurations compatible with SPI (CPOL=0, CPHA=0), QSPI, and MICROWIRE standards, with SSTRB providing end-of-conversion strobe timing.

Key Specifications

Pinout & Package

The MAX1113EEE+T is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.65mm pitch), optimized for compact PCB layouts in portable instrumentation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit multi-channel ADC applications.

Compared with ADS7822U and MCP3204-I/P, the MAX1113EEE+T uniquely combines integrated 4.096V reference, software-selectable bipolar/differential operation, and ultra-low 13µA shutdown current-making it optimal for compact, battery-sensitive, multi-mode sensor interfaces where layout area and power budget are constrained.

Availability

The MAX1113EEE+T is available at Aetrix Electronics and suitable for portable data logging, hand-held measurement devices, and solar-powered remote systems requiring stable component supply across industrial temperature ranges.

Supply support for MAX1113EEE+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for demanding industrial, medical, and communications applications.

The MAX1113EEE+T belongs to Maxim's low-power serial ADC product line, engineered for portable and remote sensing systems where small size, low quiescent current, and flexible input configuration are essential design requirements.

FAQ

What is the operating temperature range for the MAX1113EEE+T?

The MAX1113EEE+T is rated for operation from -40°C to +85°C, as indicated by the "EEE" suffix in its part number. This extended industrial temperature range ensures reliable performance in outdoor instrumentation, automotive cabin sensors, and industrial control environments where ambient conditions vary significantly. The device maintains ±1 LSB total unadjusted error across this full range when used with its internal 4.096V reference.

Does the MAX1113EEE+T support differential input measurements?

Yes, the MAX1113EEE+T supports pseudo-differential measurements using channel pairs CH0/CH1 and CH2/CH3. In differential mode, the device samples the voltage difference between the selected positive and negative inputs while maintaining a stable common-mode reference at the COM pin. This configuration provides effective common-mode noise rejection, though the negative input must remain stable within ±0.5 LSB relative to AGND during conversion for specified accuracy.

How does the MAX1113EEE+T achieve low power consumption?

The MAX1113EEE+T achieves low power consumption through multiple mechanisms: a 135µA supply current at 50ksps, a software-programmable 2µA automatic power-down mode reducing current to 13µA at 1ksps, and a three-level SHDN pin enabling hardware-controlled shutdown. Power-down is automatically exited upon serial interface access, allowing rapid wake-up without firmware overhead. These features make the MAX1113EEE+T especially suitable for intermittent-sampling applications like battery-powered data loggers.

Can the MAX1113EEE+T operate with an external reference voltage?

Yes, the MAX1113EEE+T accepts an external reference voltage applied to the REFIN pin, supporting values from 1V to VDD (4.5V–5.5V). When using an external reference, the full-scale input range becomes equal to the applied reference voltage. This flexibility allows system designers to optimize dynamic range for specific sensor outputs-for example, matching a 2.5V pressure transducer output-while retaining all other functionality including unipolar/bipolar and single-ended/differential configuration.

What serial interface protocols is the MAX1113EEE+T compatible with?

The MAX1113EEE+T is compatible with SPI (with CPOL=0, CPHA=0), QSPI, and MICROWIRE serial interface standards. Its 4-wire interface uses CS, SCLK, DIN, and DOUT signals, with SSTRB providing an additional end-of-conversion strobe. The device supports clock frequencies up to 500kHz in external clock mode and up to 2MHz in internal clock mode, enabling seamless integration with common microcontrollers such as ARM Cortex-M0+, PIC, and MSP430 families without custom bit-banging firmware.