Analog Devices Inc./Maxim Integrated MAX1113CEE

Overview

MAX1113CEE from Maxim Integrated is an 8-bit, 4-channel single-ended or 2-channel differential successive-approximation analog-to-digital converter (ADC) with internal track/hold, 4.096V reference, SPI/QSPI/MICROWIRE-compatible serial interface, and 135µA supply current at 50ksps. It operates from a single 4.5V–5.5V supply and supports unipolar/bipolar input configurations for portable data logging and hand-held measurement systems.

For engineers reviewing the MAX1113CEE datasheet, MAX1113CEE pinout, MAX1113CEE application, or MAX1113CEE equivalent, this page delivers verified electrical specs, QSOP-16 package mapping, real-world use cases in solar-powered remote sensing and medical instrumentation, and two validated alternative ADCs with documented functional trade-offs.

Technical Context

The MAX1113CEE implements a capacitive DAC-based successive-approximation architecture with integrated track/hold, supporting both internal (25µs typical conversion time) and external clock modes (500kHz max SCLK). Its analog front-end allows software-selectable unipolar or bipolar operation via control-byte bit SGL/DIF and UNI/BIP, with COM pin defining zero-scale reference.

Conversion accuracy relies on a trimmed 4.096V internal reference (±0.8 ppm/°C tempco) and achieves ±1 LSB total unadjusted error over 0°C to +70°C. Channel-to-channel crosstalk is –75 dB, and spurious-free dynamic range reaches 68 dB at 10.034 kHz input, confirming suitability for medium-resolution signal acquisition where power and board space are constrained.

Key Specifications

Pinout & Package

MAX1113CEE is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.635mm pitch), optimized for compact PCB layouts in space-constrained embedded systems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX1113CEE, ADS7822U trades internal reference and bipolar flexibility for faster conversion, while MAX1110CEE offers higher speed at the cost of halved reference voltage - both require layout adjustments due to differing reference and timing requirements.

Availability

MAX1113CEE 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 extended production lifecycles.

Supply support for MAX1113CEE 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, mixed-signal, and power management ICs for industrial, medical, and communications applications.

The MAX1112/MAX1113 product line targets low-power, space-constrained data acquisition systems requiring integrated reference, track/hold, and serial interface in a single QSOP/SSOP package.

FAQ

What is the operating temperature range for the MAX1113CEE?

The MAX1113CEE is rated for 0°C to +70°C ambient operation, as confirmed by the ordering information row specifying MAX1112CAP/MAX1113CEE. This commercial-grade range suits indoor portable instruments and non-automotive industrial environments. The device's ±0.8 ppm/°C reference temperature coefficient ensures stable full-scale accuracy across this span, and its 135µA supply current remains valid within these limits.

Does the MAX1113CEE include an internal voltage reference?

Yes, the MAX1113CEE integrates a precision 4.096V internal reference, accessible at the REFOUT pin and usable at REFIN. This reference exhibits ±0.4mV load regulation and ±0.8 ppm/°C temperature coefficient, eliminating the need for external reference components in most applications. When external referencing is required, the device accepts 1V to VDD at REFIN, but the internal reference must be disconnected by leaving REFIN unconnected or tying it to a different source.

How many analog input channels does the MAX1113CEE support?

The MAX1113CEE supports four analog input channels (CH0–CH3), configurable either as single-ended inputs referenced to COM or as two differential pairs (CH0/CH1 and CH2/CH3). This is distinct from the pin-compatible MAX1112, which offers eight channels. Channel selection and mode (single-ended/differential, unipolar/bipolar) are controlled via an 8-bit software-configurable control byte written to DIN before each conversion.

What serial interface standards does the MAX1113CEE support?

The MAX1113CEE features a 4-wire serial interface compatible with SPI™, QSPI™, and MICROWIRE™ standards. It requires CS (active-low chip select), SCLK (serial clock), DIN (data in), and DOUT (data out), with SSTRB providing end-of-conversion strobe. For SPI mode, CPOL = 0 and CPHA = 0 must be selected; data is clocked in on SCLK rising edges and out on falling edges, MSB-first, with no idle-clock requirement between bytes.

Can the MAX1113CEE operate in power-down mode, and how is it controlled?

Yes, the MAX1113CEE supports two power-down methods: software-controlled (via PD1/PD0 bits in the control byte) and hardware-controlled (via the SHDN pin). Software power-down reduces supply current to 13µA at 1ksps sampling, while pulling SHDN low achieves ≤10µA shutdown. SHDN is three-level: high-impedance (normal), low (deep shutdown), or high (disables internal reference only). Both methods fully restore operation upon wake-up without reset.