Analog Devices Inc./Maxim Integrated MAX6341CSA+T

Overview

MAX6341CSA+T from Maxim Integrated is a precision 4.096V voltage reference IC using buried-zener technology, delivering ±0.02% initial accuracy, 0.75ppm/°C typical temperature coefficient (1.5ppm/°C max), and 2.4µV_p-p (0.1Hz–10Hz) output noise. It operates from 8V to 36V input, supplies ±15mA, and is used in high-resolution ADC/DAC systems requiring stable, low-drift references.

For engineers reviewing the MAX6341CSA+T datasheet, MAX6341CSA+T pinout, MAX6341CSA+T application, or MAX6341CSA+T equivalent, key selection criteria include its 4.096V output matched to 12-bit/16-bit DAC full-scale ranges, low-noise performance critical for metrology-grade measurements, trim-adjustable output (±24mV), and SO-8 package compatibility with industrial PCB layouts.

Technical Context

The MAX6341CSA+T implements a temperature-compensated buried-zener core achieving laboratory-grade stability without oven control. Its internal compensation network yields a near-zero curvature temperature response across –40°C to +85°C.

It supports both sourcing and sinking up to ±15mA while maintaining load regulation of ≤7ppm/mA and line regulation of ≤10ppm/V over 10V–36V input range. The NR pin enables optional 1µF capacitor connection for wideband noise reduction without affecting DC accuracy.

Key Specifications

Pinout & Package

MAX6341CSA+T is housed in an 8-pin SO (Small Outline) package compliant with JEDEC MS-012, with 1.27mm pitch and gull-wing leads. Thermal pad not present; standard SO-8 footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision voltage reference applications.

Compared with ADR434BRZ and REF5040AIDR, the MAX6341CSA+T uniquely combines 4.096V output, ±15mA drive, on-chip NR filtering, and ±24mV trim in a single SO-8 device-enabling higher integration in space-constrained, high-accuracy instrumentation without external support components.

Availability

MAX6341CSA+T is available at Aetrix Electronics and suitable for high-resolution analog-to-digital converters, digital voltmeters, and ATE equipment requiring stable component supply across industrial temperature ranges.

Supply support for MAX6341CSA+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 industrial, medical, and test equipment applications.

The MAX63xx family targets high-accuracy reference needs in metrology, automated test, and process control-emphasizing ultra-low drift, low noise, and robust load regulation without external components.

FAQ

What is the guaranteed temperature coefficient specification for MAX6341CSA+T?

The MAX6341CSA+T has a maximum temperature coefficient of 1.5ppm/°C over the –40°C to +85°C operating range, with typical performance at 0.75ppm/°C. This value is measured using the box method (max ΔVOUT divided by ΔT × VOUT) and is fully specified in the Electrical Characteristics table of the official datasheet. The MAX6341CSA+T achieves this stability via a compensated buried-zener core without requiring heater circuitry.

Can MAX6341CSA+T drive a 10kΩ load while maintaining its specified accuracy?

Yes, the MAX6341CSA+T can drive a 10kΩ load (409.6µA sink current) while maintaining full accuracy. Its load regulation is specified at ≤7ppm/mA, contributing only ~2.9ppm error at 409.6µA-well within the ±0.02% (±820ppm) initial accuracy spec. The device is characterized for sourcing/sinking up to ±15mA, making it suitable for driving multiple high-impedance inputs simultaneously without degradation.

Does MAX6341CSA+T require an external capacitor on the NR pin for basic operation?

No, the NR pin on the MAX6341CSA+T is optional: leaving it open provides full functionality with 2.4µV_p-p (0.1–10Hz) noise. Connecting a 1µF capacitor to GND reduces integrated noise by ~40%, but is not required for specification compliance. Larger capacitance values yield diminishing returns, and the device remains stable regardless of NR pin configuration-making MAX6341CSA+T usable in noise-tolerant applications without added components.

What is the input voltage range supported by MAX6341CSA+T, and how does line regulation behave across it?

The MAX6341CSA+T supports an input voltage range of 8V to 36V. Line regulation is specified at ≤10ppm/V over 10V–36V, meaning output voltage variation due to input changes is limited to ±300ppm across the full range. At lower input voltages (8–10V), line regulation degrades slightly to ≤18ppm/V, but remains within datasheet limits. This performance enables reliable operation directly from unregulated industrial rails without pre-regulation.

Is MAX6341CSA+T pin-compatible with other devices in the MAX63xx family?

Yes, the MAX6341CSA+T shares identical pinout and package (SO-8) with MAX6325CSA+T and MAX6350CSA+T. All three variants use the same IN, GND, NR, TRIM, and OUT pin assignments and electrical interface-allowing board-level substitution between 2.5V, 4.096V, and 5V reference versions without layout changes. Functional differences (output voltage, trim range, noise) are internal; the MAX6341CSA+T pinout is fully compatible with the family's documented SO-8 footprint.