Analog Devices Inc./Maxim Integrated MAX6007BEUR+T

Overview

MAX6007BEUR+T from Maxim Integrated is a precision 2.048V two-terminal shunt voltage reference in a 3-pin SOT23 package, featuring 0.5% initial accuracy, 75ppm/°C temperature coefficient, <1µA minimum operating current, and operation across -40°C to +85°C for use in low-power A/D converters and portable meters.

For engineers reviewing the MAX6007BEUR+T datasheet, MAX6007BEUR+T pinout, MAX6007BEUR+T application, or MAX6007BEUR+T equivalent, key selection criteria include guaranteed sub-1µA startup current, 2.048V output tolerance at 0.5%, thermal hysteresis ≤200ppm, reverse dynamic impedance of 1.8Ω, and compatibility with 0.01µF output bypassing in space-constrained systems.

Technical Context

The MAX6007BEUR+T implements a laser-trimmed series bandgap core with on-chip thin-film resistors, delivering stable 2.048V reference voltage under reverse-biased two-terminal operation. Its design supports bias currents from 0.5µA to 2mA while maintaining <0.2% VR drift over that range.

It operates as a shunt regulator requiring external pull-up (RBIAS) and 0.01µF OUT-to-GND capacitance; output voltage hysteresis is limited to ≤200ppm after thermal cycling, and low-frequency noise is specified at 50µV_P-P (0.1Hz–10Hz) at 1.2µA.

Key Specifications

Pinout & Package

MAX6007BEUR+T is housed in a RoHS-compliant 3-pin SOT23 package (outline 21-0051), measuring 2.1mm × 2.7mm × 1.1mm, with thermal resistance θ_JA = 274.23°C/W on multilayer board.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM4040C20IDBZR, MAX6007BEUR+T delivers 45× lower minimum operating current and 25ppm/°C better temperature coefficient; compared with MAX6007AEUR+T, it trades 0.3% accuracy and 45ppm/°C TC for cost-sensitive designs where 2.048V ±10mV is sufficient.

Availability

MAX6007BEUR+T is available at Aetrix Electronics and suitable for battery-powered equipment, portable meters, and precision regulators requiring stable component supply with guaranteed long-term sourcing.

Supply support for MAX6007BEUR+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, mixed-signal, and power management ICs for industrial, medical, and communications applications.

The MAX6006–MAX6009 family targets ultra-low-power, space-constrained systems needing stable voltage references with sub-1µA operation and laser-trimmed accuracy-optimized for portable instrumentation and energy-harvesting sensor nodes.

FAQ

What is the guaranteed minimum operating current for MAX6007BEUR+T?

The MAX6007BEUR+T guarantees a minimum operating current of 0.5µA, verified across -40°C to +85°C, ensuring reliable startup and regulation even in ultra-low-power sleep modes. This value is measured as the lowest current at which reverse breakdown voltage (VR) changes by less than 0.2% relative to its value at 1.2µA. The MAX6007BEUR+T maintains regulation down to this threshold without dropout or instability.

Does MAX6007BEUR+T require an external capacitor, and if so, what value?

Yes, MAX6007BEUR+T requires a minimum 0.01µF capacitor connected between OUT (pin 1) and GND (pin 2) to ensure stability and reduce noise. This capacitor suppresses high-frequency oscillation and improves transient response during load or supply steps. Larger values (e.g., 0.1µF) may further reduce overshoot in fast-switching applications, but 0.01µF is the absolute minimum specified for all operating conditions of the MAX6007BEUR+T.

What is the meaning of the 'IC' pin (pin 3) on MAX6007BEUR+T?

The 'IC' pin (pin 3) on MAX6007BEUR+T is an internally connected test point used during wafer probe and final test; it has no functional role in circuit operation. Maxim Integrated documentation explicitly states this pin must be left unconnected or tied to GND-never biased or loaded. It does not affect regulation, noise, or thermal performance of the MAX6007BEUR+T and carries no electrical specification.

How does the temperature coefficient of MAX6007BEUR+T compare to the 'A' grade version?

The MAX6007BEUR+T has a maximum temperature coefficient of 75ppm/°C, whereas the MAX6007AEUR+T is rated at 30ppm/°C. This means the 'B' grade exhibits approximately 2.5× greater voltage drift over temperature-e.g., ±0.63mV over -40°C to +85°C versus ±0.25mV for the 'A' grade. Both share identical 2.048V nominal output and 0.01µF bypass requirement, but the MAX6007BEUR+T is selected where cost sensitivity outweighs tight TC requirements.

Can MAX6007BEUR+T replace LM4040 in existing designs?

MAX6007BEUR+T can serve as a functional upgrade to LM4040 in many shunt reference applications, but direct replacement requires layout review: both use SOT23 packages with identical pin 1 (OUT) and pin 2 (GND) assignments, but MAX6007BEUR+T's pin 3 (IC) is NC versus LM4040's pin 3 (CATHODE). Also, MAX6007BEUR+T's 0.5µA min current is far lower than LM4040's ~45µA, enabling new low-power use cases-but existing RBIAS values may need recalculation to avoid excessive current in the MAX6007BEUR+T.