Analog Devices Inc./Maxim Integrated MAX6192BESA+T

Overview

MAX6192BESA+T from Maxim Integrated is a precision, micropower, low-dropout series-mode bandgap voltage reference delivering 2.500V ±2mV initial accuracy, 5ppm/°C max temperature coefficient, and 35µA max quiescent supply current. It operates from (VOUT + 0.2V) to 12.6V input, supports ±500µA load sourcing/sinking, and is stable with capacitive loads up to 2.2nF - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.

For engineers reviewing the MAX6192BESA+T datasheet, MAX6192BESA+T pinout, MAX6192BESA+T application, or MAX6192BESA+T equivalent, key selection criteria include initial voltage tolerance, thermal drift stability over -40°C to +85°C, dropout behavior at 500µA load, load regulation performance (0.14µV/µA), and compatibility with low-noise, battery-powered signal chains requiring <125µVRMS broadband noise.

Technical Context

The MAX6192BESA+T employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve <5ppm/°C temperature coefficient and ±2mV initial accuracy. Its series-mode architecture enables bidirectional load current (±500µA) with only 100mV dropout at full sink/source load.

Internally compensated for fast settling (85µs to 0.1%), it maintains stability across 0–2.2nF output capacitance and exhibits 82dB ripple rejection at 120Hz. Supply current remains highly invariant (<2µA/V line regulation sensitivity) across its operating input range.

Key Specifications

Pinout & Package

MAX6192BESA+T is housed in an 8-pin SO (Small Outline) package, RoHS-compliant and lead-free. Pin 1 is OUT, Pin 2 is IN, Pin 4 is GND; Pins 1, 3, 5, 7, and 8 are No Connect (N.C.).

Key Features

Applications

Equivalent & Alternatives

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

Compared with REF5025IDR and ADR3425ARJZ-R7, MAX6192BESA+T uniquely balances micropower operation (35µA), tight initial accuracy (±2mV), and robust capacitive-load tolerance (0–2.2nF) - making it optimal for portable, high-accuracy measurement systems where supply headroom and board area are constrained.

Availability

MAX6192BESA+T is available at Aetrix Electronics and suitable for hand-held instruments, precision ADC/DAC biasing, and industrial process control systems requiring stable component supply across extended production lifecycles.

Supply support for MAX6192BESA+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 demanding industrial, medical, and communications applications.

The MAX6190–MAX6195/MAX6198 family was engineered specifically for micropower, high-accuracy voltage referencing in battery-operated and space-constrained measurement systems - emphasizing low drift, minimal dropout, and zero-required external components.

FAQ

What is the maximum load current supported by the MAX6192BESA+T?

The MAX6192BESA+T supports bidirectional load current up to ±500µA while maintaining regulation and specified accuracy. It can both source and sink this current, enabling direct interface with op-amp inputs, ADC reference inputs, and precision DAC feedback networks without external buffering. Performance remains guaranteed within datasheet limits across the full -40°C to +85°C operating temperature range.

Does the MAX6192BESA+T require an external output capacitor?

No, the MAX6192BESA+T does not require an external output capacitor for stability - it is internally compensated and guaranteed stable with capacitive loads from 0 to 2.2nF. An optional capacitor may improve transient response in applications with rapid load or supply steps, but omitting it saves board space and cost in static or low-dynamic applications such as sensor biasing or reference ladder networks.

What is the minimum input voltage needed for the MAX6192BESA+T to regulate properly?

The MAX6192BESA+T requires a minimum input voltage of (VOUT + 0.2V), i.e., 2.7V, to maintain regulation at full load. This 100mV dropout specification holds for sourcing or sinking up to ±500µA. At lighter loads, dropout decreases further - enabling reliable operation even in marginally regulated 2.8V or 3.0V supply rails common in portable electronics.

How does the MAX6192BESA+T compare to shunt voltage references in terms of power efficiency?

Unlike shunt references that draw constant current through a series resistor, the MAX6192BESA+T is a series-mode device drawing only ≤35µA quiescent current - independent of load. Its supply current increases only when delivering load current, maximizing battery life. Shunt alternatives would waste significant power under light or no-load conditions, especially at higher input voltages, whereas MAX6192BESA+T maintains efficiency across all operating points.

Is the MAX6192BESA+T suitable for use with high-resolution delta-sigma ADCs?

Yes, the MAX6192BESA+T is well-suited for high-resolution delta-sigma ADCs due to its 125µVRMS (0.1–10Hz) low-frequency noise, ±2mV initial accuracy, and 5ppm/°C temperature coefficient. These characteristics preserve effective number of bits (ENOB) in 24-bit converters, particularly in low-speed, high-precision applications like weigh scales and environmental sensors where low-frequency drift and noise dominate error budgets.