Analog Devices Inc./Maxim Integrated MAX6078AMWT33+T

Overview

The MAX6078AMWT33+T from Analog Devices is a precision 3.3V voltage reference IC featuring ±0.04% initial accuracy, <10ppm/°C temperature drift, and 12µV_P-P low-frequency noise (0.1Hz–10Hz), operating from 3.5V to 5.5V input with only 15µA quiescent current. It delivers ±3mA load current capability and supports force-sense output architecture for high-accuracy remote sensing in precision ADC/DAC biasing.

For engineers reviewing the MAX6078AMWT33+T datasheet, MAX6078AMWT33+T pinout, MAX6078AMWT33+T application, or MAX6078AMWT33+T equivalent, key selection criteria include its 6-bump WLP package (1.5mm × 1.3mm), enable-controlled shutdown (<2µA), NR-pin noise filtering, and extended industrial temperature range (–55°C to +125°C).

Technical Context

The MAX6078AMWT33+T implements a bandgap-based reference core with independent force (OUTF) and sense (OUTS) outputs, enabling Kelvin connection to cancel trace resistance errors in high-precision systems. Its internal architecture includes an enable-controlled shutdown path that reduces supply current to <2µA while maintaining fast 3ms wake-up time.

Wideband noise reduction is achieved via the NR pin, which accepts a 0.01µF capacitor to lower spectral noise density from 580nV/√Hz to 385nV/√Hz at 100Hz. The device operates with 100mV dropout at 3mA load and supports stable operation with output capacitors from 0.1µF to 4.7µF.

Key Specifications

Pinout & Package

The MAX6078AMWT33+T is housed in a 1.5mm × 1.3mm, 0.5mm pitch, 6-bump Wafer-Level Package (WLP) with exposed silicon die surface - no thermal pad. This ultra-compact footprint minimizes PCB area in space-constrained portable systems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADR3433ARJZ-R7 and REF3333AIDBVR, the MAX6078AMWT33+T provides superior initial accuracy (±0.04% vs. ±0.1%), integrated noise reduction, and force-sense architecture-enabling higher system-level precision in space-constrained industrial and portable designs where trace resistance and power supply noise impact measurement integrity.

Availability

The MAX6078AMWT33+T is available at Aetrix Electronics and suitable for high-accuracy industrial control, precision instrumentation, and portable/handheld systems requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.

Supply support for MAX6078AMWT33+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

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX6078 family is designed for ultra-precision voltage reference applications demanding low drift, low noise, and minimal power consumption in harsh environments - targeting data acquisition, test equipment, and portable instrumentation.

FAQ

What is the maximum input voltage for the MAX6078AMWT33+T?

The MAX6078AMWT33+T operates with an input voltage range of 3.5V to 5.5V, as specified for the 3.3V output variant. Exceeding 5.5V violates absolute maximum ratings and may cause permanent damage. Input voltage must remain ≥ (3.3V + 100mV dropout) to maintain regulation under 3mA load.

How does the force-sense (OUTF/OUTS) configuration improve accuracy in the MAX6078AMWT33+T?

The MAX6078AMWT33+T uses separate OUTF (force) and OUTS (sense) pins to implement a Kelvin connection. By routing OUTS directly to the load point, the device compensates for voltage drop across PCB traces or wiring, maintaining ±0.04% output accuracy at the load regardless of trace resistance - critical for high-precision ADC references.

Can the NR pin of the MAX6078AMWT33+T be left unconnected?

Yes, the NR pin of the MAX6078AMWT33+T can be left floating if wideband noise reduction is not required. When unused, it introduces no functional penalty. However, connecting a 0.01µF capacitor from NR to GND reduces 100Hz noise spectral density by ~33%, which is recommended for high-resolution ADC applications.

What is the thermal hysteresis specification for the MAX6078AMWT33+T?

The MAX6078AMWT33+T exhibits a typical thermal hysteresis of 20ppm - defined as the change in output voltage at +25°C before and after cycling the device from –55°C to +125°C. This parameter reflects mechanical stress memory in the silicon and is fully characterized over the extended industrial temperature range.

Does the MAX6078AMWT33+T support capacitive loads, and what is the stable range?

Yes, the MAX6078AMWT33+T is stable with output capacitive loads from 0.1µF to 4.7µF. For optimal transient response with rapidly changing loads, Analog Devices recommends using a 0.1µF ceramic capacitor in parallel with a larger bulk capacitor - this combination minimizes ESR-induced output perturbations.