Analog Devices Inc./Maxim Integrated MAX1310ECM+T

Overview

MAX1310ECM+T from Maxim Integrated is a 12-bit, 2-channel simultaneous-sampling analog-to-digital converter (ADC) with ±5V input range and ±16.5V fault-tolerant inputs. It achieves 0.9μs two-channel conversion time, 456ksps per channel throughput at 8-channel mode, and features internal 2.5V reference, 20MHz parallel interface, and operation from +4.75V to +5.25V analog supply. It is used in multiphase motor control systems requiring precise synchronized voltage/current sampling.

For engineers reviewing the MAX1310ECM+T datasheet, MAX1310ECM+T pinout, MAX1310ECM+T application, or MAX1310ECM+T equivalent, key selection criteria include bipolar ±5V input support, 2-channel simultaneous track-and-hold, 48-pin LQFP package, fault-tolerant analog inputs, and compatibility with external or internal clock sources for deterministic timing in industrial control loops.

Technical Context

The MAX1310ECM+T implements independent track-and-hold circuitry per channel to enable true simultaneous sampling across both analog inputs, with 100ps channel-to-channel T/H match and 8ns aperture delay. Its architecture supports both internal 15MHz clock and external clock up to 20MHz, delivering 901ksps/channel throughput in dual-channel mode using internal clocking.

It uses a 12-bit parallel digital interface operating at 20MHz with standard RD/WR/CS control signals and EOC/EOLC status outputs. The device integrates a buffered internal 2.5V reference (±30ppm/°C drift) and supports external reference input from +2.0V to +3.0V, with REFMS and REF pins configured for bipolar operation by tying them together.

Key Specifications

Pinout & Package

MAX1310ECM+T is housed in a 48-pin 7mm × 7mm lead(Pb)-free RoHS-compliant LQFP package with exposed thermal pad (EP), rated for -40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar simultaneous-sampling ADC applications.

Compared with AD7322BRUZ and ADS8556IPMR, the MAX1310ECM+T offers optimal balance of 12-bit precision, fault-tolerant ±5V input, compact 48-pin LQFP packaging, and integrated 2.5V reference - making it ideal for cost-sensitive, space-constrained industrial motor drives where deterministic parallel timing is required.

Availability

MAX1310ECM+T is available at Aetrix Electronics and suitable for multiphase motor control, power-grid synchronization, and vibration analysis applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX1310ECM+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 markets, emphasizing integration, reliability, and ruggedness.

The MAX1304–MAX1314 family was engineered specifically for industrial automation systems demanding simultaneous sampling, high fault tolerance, and seamless integration with FPGA/microcontroller parallel interfaces - targeting motor drives, power quality monitors, and synchrophasor measurement units.

FAQ

What is the maximum analog input voltage range supported by the MAX1310ECM+T?

The MAX1310ECM+T supports a bipolar ±5V analog input range, with ±16.5V fault-tolerant capability on CH0 and CH1. This allows direct connection to industrial sensors and motor phase terminals without external attenuation or protection circuitry, while surviving transient overvoltages common in inverter environments. The device is not rated for unipolar 0–+5V operation - that range applies only to the MAX1304–MAX1306 variants.

Does the MAX1310ECM+T require an external clock to operate?

No, the MAX1310ECM+T includes an internal 15MHz clock and can operate autonomously without an external clock source. The INTCLK/EXTCLK pin selects between internal and external modes: tie to AVDD for internal clock, or AGND for external clock input at CLK pin. When using the internal clock, the MAX1310ECM+T achieves 901ksps per channel throughput in dual-channel mode, eliminating timing jitter from external clock distribution.

How does the MAX1310ECM+T handle reference voltage configuration for bipolar operation?

For bipolar ±5V operation, the MAX1310ECM+T requires REF and REFMS pins to be tied together and bypassed with ≥0.01µF capacitor to AGND when using the internal 2.5V reference. If an external reference is used, the combined REF/REFMS node must be driven with a stable +2.0V to +3.0V source. This configuration establishes the differential reference voltage (VREF+ – VREF− = 2.5V) needed for accurate bipolar code mapping in the MAX1310ECM+T.

What is the significance of the 100ps channel-to-channel track-and-hold matching in the MAX1310ECM+T?

The 100ps channel-to-channel T/H matching in the MAX1310ECM+T ensures near-perfect temporal alignment between CH0 and CH1 sampled values, translating to <0.01° phase error at 10kHz - critical for vector-controlled motor drives where precise voltage/current phase relationships determine torque accuracy and efficiency. This spec guarantees correlated sampling without post-processing interpolation or calibration, simplifying firmware and improving real-time control loop stability.

Can the MAX1310ECM+T be used in systems with mixed 3.3V and 5V logic domains?

Yes, the MAX1310ECM+T supports independent analog and digital supplies: AVDD operates from +4.75V to +5.25V, while DVDD accepts +2.7V to +5.25V, allowing direct interfacing with 3.3V microcontrollers or FPGAs. Digital input thresholds scale with DVDD (VIH = 0.7×DVDD, VIL = 0.3×DVDD), and outputs meet 3.3V logic levels when DVDD = 3.3V - enabling robust communication across voltage domains without level shifters in the MAX1310ECM+T interface.