Analog Devices Inc./Maxim Integrated MX584KH

Overview

MX584KH from Maxim Integrated is a precision, temperature-compensated bandgap voltage reference with pin-programmable outputs of +10.00V, +7.50V, +5.00V, or +2.50V; ±10mV initial tolerance at +10V output; 15ppm/°C max temperature coefficient; and 750µA quiescent current. It operates from 4.5V to 30V input and features STROBE-controlled shutdown for power-sensitive data acquisition systems.

For engineers reviewing the MX584KH datasheet, MX584KH pinout, MX584KH application, or MX584KH equivalent, this device serves as a stable, no-external-component reference for 8–14-bit converters, precision analog instrumentation, and programmable gain amplifier offset calibration where low drift and tight initial accuracy are critical.

Technical Context

The MX584KH implements a laser-trimmed bandgap core followed by a buffered noninverting amplifier stage, enabling four discrete, factory-set output voltages selected via pin strapping (pins 1–3). Its internal architecture includes a dedicated VBG node (pin 6) for external trimming and a CAP pin (pin 7) for noise filtering via external capacitor.

It integrates STROBE logic (pin 5) that actively pulls the output to near-zero when driven low (<200mV threshold), reducing quiescent current to ~100µA. Output sourcing/sinking capability (±10mA) and short-circuit protection support direct interface with DACs, ADCs, and PGA bias networks without external buffers.

Key Specifications

Pinout & Package

MX584KH is supplied in an 8-lead TO-99 metal can package with case connected to COMMON (pin 4); tab is electrically tied to pin 4 and must be grounded for proper thermal and electrical performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with REF5025ID and ADR441BRZ, the MX584KH trades ultra-low tempco and noise for on-the-fly voltage selection and active power management-making it uniquely suited for multi-range, battery-aware precision analog systems where one device replaces multiple fixed references.

Availability

MX584KH is available at Aetrix Electronics and suitable for precision data acquisition systems, industrial measurement instrumentation, and portable medical devices requiring stable component supply with guaranteed long-term availability.

Supply support for MX584KH 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 precision, power, and interface applications in industrial, medical, and communications systems.

The MX584KH belongs to Maxim's precision voltage reference product line, engineered specifically for high-accuracy, multi-voltage reference needs in data converters and instrumentation-prioritizing laser-trimmed stability, pin-strappable flexibility, and low-power controllability.

FAQ

What output voltages does the MX584KH support, and how are they selected?

The MX584KH supports +10.00V, +7.50V, +5.00V, and +2.50V outputs. Selection is achieved by strapping pins 1–3 per Table 1 in the datasheet: unconnected pins yield +10V; connecting pins 2&3 yields +7.5V; pins 2&1 yield +5V; pins 3&1 yield +2.5V. No external resistors are needed for these standard outputs, and the MX584KH maintains ±10mV tolerance at +10V across its 0°C to +70°C operating range.

How does the STROBE function work on the MX584KH, and what is its impact on power consumption?

The STROBE input (pin 3) is an active-low control: pulling it below 200mV disables the output and reduces quiescent current from 750µA to ~100µA. The MX584KH resumes normal operation within 200µs after STROBE returns high. This feature enables synchronized power gating in time-critical data acquisition systems, and the MX584KH's design ensures no residual output voltage exceeds 0.7V during shutdown-preserving signal integrity in multiplexed reference architectures.

Can the MX584KH be used to generate negative reference voltages, and if so, how?

Yes-the MX584KH can operate as a two-terminal negative reference by connecting +VS and VOUT (pin 1) to analog ground and routing COMMON (pin 4) through a bias resistor to a negative supply (e.g., –15V). This configuration yields –2.5V, –5V, –7.5V, or –10V depending on pin strapping. For the MX584KH, this mode requires 1mA–5mA bias current and is validated for –55°C to +85°C; the MX584KH's ±10mV tolerance and 15ppm/°C tempco apply to both positive and negative configurations when operated within specified limits.

What is the maximum load current the MX584KH can source or sink while maintaining specified accuracy?

The MX584KH can source or sink up to ±10mA while staying within its specified load regulation of 30ppm/mA. At ±5mA load, output deviation remains under ±0.15mV for a +10V output. The MX584KH's output stage is short-circuit protected to both +VS and COMMON, allowing safe operation even under fault conditions. For higher current demands, the MX584KH can drive external PNP/NPN transistors-as shown in Figures 6 and 7-to deliver up to 4A while retaining its precision voltage setting.

Does the MX584KH require external capacitors for stability, and how does the CAP pin function?

The MX584KH does not require external capacitors for basic stability, but the CAP pin (pin 6) enables optional noise filtering: connecting a 0.01µF–0.1µF capacitor between CAP and VBG (pin 2) reduces wideband noise and feedthrough, lowering total integrated noise from 50µV_P-P to <10µV_P-P in some configurations. This technique is especially effective for high-resolution ADC applications. The MX584KH's internal amplifier remains stable without external compensation, and the CAP pin has no effect on DC accuracy or temperature drift.