Analog Devices Inc./Maxim Integrated MAX1300BEUG+

Overview

MAX1300BEUG+ from Maxim Integrated is a 16-bit, multirange, successive-approximation analog-to-digital converter (ADC) with eight single-ended or four true-differential input channels, ±16.5V overvoltage tolerance, 115ksps maximum sample rate, and internal +4.096V reference-designed for high-accuracy industrial data acquisition in harsh environments.

For engineers reviewing the MAX1300BEUG+ datasheet, MAX1300BEUG+ pinout, MAX1300BEUG+ application, or MAX1300BEUG+ equivalent, this page delivers verified electrical specifications, channel-programmable input ranges, SPI/QSPI/MICROWIRE-compatible serial interface details, and real-world use context for embedded sensor systems requiring stable multirange voltage digitization.

Technical Context

The MAX1300BEUG+ implements a fully differential SAR architecture with on-chip track-and-hold, supporting independent software configuration per channel across seven single-ended (e.g., ±3 × VREF, 0 to +3 × VREF) and three differential (±3 × VREF, ±6 × VREF) input ranges. It uses separate AVDD1/AVDD2 analog supplies and DVDD/DVDDO digital supplies to isolate noise-sensitive circuitry.

Its fault-tolerant analog inputs tolerate ±16.5V regardless of channel activity, and its internal reference (4.096V ±1%) or external reference (3.800V–4.136V) selection is controlled via REFCAP voltage thresholding-enabling flexible system-level reference sourcing without hardware changes.

Key Specifications

Pinout & Package

The MAX1300BEUG+ is housed in a 24-pin TSSOP package (lead(Pb)-free/RoHS-compliant) with exposed pad for thermal performance. Pin assignments are validated per Maxim's official datasheet Rev 3 (12/11).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit multichannel ADC applications.

Compared with ADS8688IPW and AD7606BSTZ, the MAX1300BEUG+ uniquely combines per-channel software-selectable input ranges, ±16.5V fault tolerance, and internal 4.096V reference-making it optimal for heterogeneous industrial sensor aggregation where range diversity and ruggedness outweigh need for simultaneous sampling or integrated PGA.

Availability

MAX1300BEUG+ is available at Aetrix Electronics and suitable for industrial process monitoring, avionics sensor interfaces, and robotics joint feedback systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX1300BEUG+ 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 high-reliability semiconductor solutions for industrial, automotive, and communications markets.

The MAX1300BEUG+ belongs to Maxim's high-accuracy, multirange SAR ADC product line-engineered specifically for industrial data acquisition systems demanding robustness, configurability, and metrology-grade linearity in electrically noisy environments.

FAQ

What is the maximum sample rate of the MAX1300BEUG+?

The MAX1300BEUG+ achieves a maximum throughput rate of 115ksps in external clock mode. This rate is maintained across all supported input ranges and configurations, including both single-ended and differential acquisitions. The actual achievable rate depends on clock frequency and interface timing margins, but the device is fully characterized and guaranteed to 115ksps under standard operating conditions (VAVDD = 5V, TA = +25°C).

Does the MAX1300BEUG+ support true differential input mode?

Yes, the MAX1300BEUG+ supports true differential input mode with four configurable differential pairs (CH0–CH1, CH2–CH3, CH4–CH5, CH6–CH7). Each pair accepts input voltages spanning ±3 × VREF or ±6 × VREF, with common-mode range from -14V to +9V. Differential mode provides inherent noise rejection and eliminates the need for external instrumentation amplifiers in balanced sensor applications.

Can the MAX1300BEUG+ operate with an external reference voltage?

Yes, the MAX1300BEUG+ accepts an external reference voltage between 3.800V and 4.136V applied to the REF pin. Operation mode (internal vs. external reference) is automatically selected based on the voltage at REFCAP relative to AVDD1. For external reference use, connect REFCAP to AVDD1; for internal reference, bypass REFCAP to AGND1 with a 0.01µF capacitor.

What is the input overvoltage tolerance of the MAX1300BEUG+?

The MAX1300BEUG+ analog inputs (CH0–CH7) are rated for continuous overvoltage tolerance of ±16.5V relative to AGND1. This protection remains active even when a channel is idle, preventing fault propagation to other channels. The tolerance is achieved via integrated back-to-back diode clamps and does not require external components for basic surge protection in industrial I/O modules.

Is the MAX1300BEUG+ compatible with 3.3V microcontrollers?

Yes, the MAX1300BEUG+ supports 3.3V microcontrollers via its DVDDO supply pin, which accepts 2.7V to 5.25V. When DVDDO = 3.3V, digital inputs (CS, SCLK, DIN) recognize VIH ≥ 2.31V and VIL ≤ 0.99V, and DOUT/SSTRB outputs swing rail-to-rail within 3.3V logic levels. No level-shifting circuitry is required for direct connection to standard 3.3V SPI hosts.