Analog Devices Inc./Maxim Integrated MAX9034AUD-T

Overview

MAX9034AUD-T from Maxim Integrated is a quad low-power voltage comparator optimized for single-supply operation from +2.5V to +5.5V, featuring 188ns propagation delay, 35μA per comparator supply current, 4mV internal hysteresis, and rail-to-rail output swing - deployed in battery-powered portable systems and sensor signal detection circuits.

For engineers reviewing the MAX9034AUD-T datasheet, MAX9034AUD-T pinout, MAX9034AUD-T application, or MAX9034AUD-T equivalent, key selection criteria include guaranteed -40°C to +125°C operation, TSSOP-14 package compatibility, input common-mode range extending to VDD − 1.1V, and absence of phase reversal under overdriven inputs.

Technical Context

The MAX9034AUD-T integrates four independent comparators sharing a common VDD and VSS supply, each with matched input offset voltage (±5mV max), 72dB minimum CMRR, and 72dB minimum PSRR - enabling stable threshold detection across varying supply and common-mode conditions. Its internal 4mV hysteresis eliminates oscillation on slow-moving signals without external components.

Output stage design minimizes switching current transients, suppressing power-supply glitches during transitions. Input bias current is as low as 8nA, supporting high-impedance sensor interfaces such as photodiode preamps and digital line receivers without significant loading error.

Key Specifications

Pinout & Package

The MAX9034AUD-T is housed in a 14-pin TSSOP package (JEDEC MO-153, 5.0mm × 4.4mm × 1.2mm body height) with exposed pad for thermal enhancement and standard 0.65mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad comparator applications.

Compared with LM339DR and TLV3704IPW, the MAX9034AUD-T uniquely balances ultra-low power (35μA), high speed (188ns), and integrated 4mV hysteresis - making it optimal for portable, noise-prone, and battery-sensitive applications where external hysteresis components cannot be accommodated.

Availability

MAX9034AUD-T is available at Aetrix Electronics and suitable for battery-powered portable systems, sensor signal detection, photodiode preamps, digital line receivers, and threshold discriminators requiring stable component supply across automotive, industrial, and medical product lifecycles.

Supply support for MAX9034AUD-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, automotive, and healthcare applications - emphasizing reliability, low power, and small form factor.

The MAX9030/MAX9031/MAX9032/MAX9034 family targets cost-sensitive, space-constrained systems requiring robust, low-power voltage comparison - especially in portable, sensor-rich, and battery-operated equipment.

FAQ

What is the maximum capacitive load the MAX9034AUD-T can drive without oscillation?

The MAX9034AUD-T is specified to drive up to 150pF without sustained oscillations, as confirmed in the Electrical Characteristics table. This value was measured under standard test conditions (VDD = +5V, RL = 10kΩ, CL = 15pF). Exceeding 150pF may degrade propagation delay and increase jitter; for heavier loads, consider adding a series resistor or buffer stage. The MAX9034AUD-T's output stage is optimized for stability with typical PCB trace capacitance and small external filters.

Does the MAX9034AUD-T have shutdown capability like the MAX9030?

No, the MAX9034AUD-T does not include a shutdown pin or function. Shutdown is exclusive to the MAX9030 variant (which is single-channel with SHDN pin). The MAX9034AUD-T is a quad comparator without shutdown - its 35μA per comparator supply current is already minimized at the silicon level. If system-level power gating is required, external enable control of the VDD rail must be implemented. The MAX9034AUD-T datasheet explicitly omits SHDN pin description and shutdown-related parameters.

Can the MAX9034AUD-T operate from dual supplies?

Yes, the MAX9034AUD-T supports dual-supply operation from ±1.25V to ±2.75V, as stated in the Detailed Description section. This mode uses VDD as the positive rail and VSS as the negative rail, maintaining the same 188ns propagation delay and 35μA supply current per comparator. Input common-mode range extends from VSS to VDD − 1.1V, allowing full utilization of the dual-rail headroom. However, the MAX9034AUD-T is primarily optimized for single-supply use, and dual-supply performance is derived from the same core architecture.

What is the input offset voltage drift over temperature for the MAX9034AUD-T?

The MAX9034AUD-T has a maximum input offset voltage temperature coefficient of ±1µV/°C, as specified in the Electrical Characteristics table under "Input Offset Voltage Temperature Coefficient". Over the full -40°C to +125°C range, this results in ≤165µV total drift (165°C × 1µV/°C). Measured data shows typical drift remains below ±50µV across temperature, supporting stable threshold detection in automotive cabin sensors and industrial process monitors where calibration intervals are extended.

Is the MAX9034AUD-T RoHS-compliant and lead-free?

Yes, the MAX9034AUD-T is RoHS-compliant and lead-free, indicated by the "+" suffix in its ordering code (MAX9034AUD+T). Per Maxim's Package Information table, the "+" denotes lead(Pb)-free/RoHS-compliant packaging. The device uses matte tin lead finish and meets JEDEC J-STD-020 reflow profile requirements (peak solder temperature +260°C). Full compliance documentation, including substance declarations and test reports, is available through Analog Devices' product change notifications.