Analog Devices Inc./Maxim Integrated MAX1300BEUG+T

Overview

MAX1300BEUG+T from Maxim Integrated is a 16-bit, multirange, successive-approximation ADC with eight single-ended or four true-differential analog input channels, ±16.5V overvoltage tolerance, 115ksps maximum sample rate, and internal +4.096V reference. It operates from a single +5V analog supply and supports digital interfacing down to 2.7V via separate DVDDO, enabling use in industrial data-acquisition front-ends with wide input signal ranges.

For engineers reviewing the MAX1300BEUG+T datasheet, MAX1300BEUG+T pinout, MAX1300BEUG+T application, or MAX1300BEUG+T equivalent, key selection considerations include software-programmable per-channel input ranges (±3×VREF, ±6×VREF), fault-tolerant analog inputs, SPI/QSPI/MICROWIRE-compatible serial interface, and dual analog supply architecture (AVDD1/AVDD2) for noise isolation in mixed-signal systems.

Technical Context

The MAX1300BEUG+T implements a fully differential SAR architecture with integrated track-and-hold, supporting both unipolar and bipolar configurations across seven single-ended and three differential input ranges. Its analog input circuitry features back-to-back diode protection and constant 17kΩ input resistance over ±16.5V fault range.

It uses a four-rail power system-AVDD1/AGND1 (analog core), AVDD2/AGND2 (preamplifier), DVDD/DGND (digital logic), and DVDDO/DGNDO (I/O)-enabling independent supply optimization and high channel-to-channel isolation (>105dB). Reference operation is selectable between internal 4.096V ±1% bandgap or external 3.800V–4.136V sources.

Key Specifications

Pinout & Package

The MAX1300BEUG+T is housed in a 24-pin TSSOP package (4.4mm × 7.8mm, 0.65mm pitch) with exposed pad for thermal enhancement. Pin assignments are optimized for analog/digital ground separation and supply decoupling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS8688IPWR and AD7606BSTZ, the MAX1300BEUG+T uniquely combines internal reference, per-channel software-programmable ranges, and ±16.5V fault tolerance in a single 24-pin TSSOP-making it optimal for space-constrained, field-deployed industrial I/O modules where reliability and design simplicity are critical.

Availability

MAX1300BEUG+T 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+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 high-performance analog and mixed-signal ICs for industrial, automotive, and communications applications.

The MAX1300BEUG+T belongs to Maxim's precision data-acquisition ADC family, engineered for rugged industrial environments where multirange flexibility, fault tolerance, and low-power operation are essential for PLCs, DAQ systems, and sensor signal conditioning.

FAQ

What is the maximum sample rate of the MAX1300BEUG+T?

The MAX1300BEUG+T achieves a maximum sample rate of 115ksps in external clock mode. This rate is confirmed under standard operating conditions (VAVDD1 = VAVDD2 = VDVDD = VDVDDO = 5V, fCLK = 3.5MHz, VREF = 4.096V). The device supports lower rates in internal clock and external acquisition modes (106ksps and 84ksps respectively), allowing trade-offs between timing control and system clock resource usage. All modes maintain full 16-bit resolution and specified DC accuracy.

Does the MAX1300BEUG+T include an internal voltage reference?

Yes, the MAX1300BEUG+T integrates a precision +4.096V bandgap reference with ±1% initial accuracy and ±30ppm/°C temperature coefficient. This internal reference is enabled by bypassing the REFCAP pin with a 0.01µF capacitor to AGND1. Alternatively, the device accepts an external reference from 3.800V to 4.136V applied to the REF pin, with REFCAP tied to AVDD1 to disable the internal buffer. Both modes are production-tested and supported across the full -40°C to +85°C temperature range.

How many analog input channels does the MAX1300BEUG+T support?

The MAX1300BEUG+T supports eight single-ended analog input channels (CH0–CH7) or four true-differential analog input channels. This configuration is fixed per device variant-MAX1300 devices (including MAX1300BEUG+T) always provide eight single-ended inputs, unlike the MAX1301 which offers four. Each channel is independently software-programmable for input range and polarity, enabling mixed-signal acquisition without external multiplexing hardware.

What is the overvoltage tolerance specification for the MAX1300BEUG+T analog inputs?

The MAX1300BEUG+T analog inputs (CH0–CH7) are rated for ±16.5V continuous overvoltage relative to AGND1. This specification is guaranteed across the full operating temperature range (-40°C to +85°C) and is implemented using integrated back-to-back diode protection. A fault condition on any idle channel does not affect conversion results on active channels, ensuring reliable operation in harsh industrial environments with potential field-wiring errors or surge events.

Which serial interface protocols does the MAX1300BEUG+T support?

The MAX1300BEUG+T features an SPI-/QSPI™-/MICROWIRE®-compatible 4-wire serial interface with CS, SCLK, DIN, and DOUT pins. It operates in standard SPI Mode 0 (CPOL = 0, CPHA = 0) and supports both external clocking (master-controlled SCLK) and internal clocking (with SSTRB strobe output indicating data readiness). The interface is electrically compatible with 2.7V–5.25V logic levels via the DVDDO supply, eliminating the need for level-shifting circuitry when interfacing with modern low-voltage microcontrollers.