Diodes Incorporated AZV5002DS-7

Overview

AZV5002 from Diodes Incorporated is a low-power audio jack detection IC integrating a comparator with internal hysteresis, OR gate, and N-channel MOSFET to detect stereo headset insertion with SEND/END button press functionality. It operates from 1.6–5.5V supply, draws only 5µA typical supply current at 1.8V, and delivers open-drain MIC output and logic-level DET/S/E outputs for baseband processor interfacing in mobile handsets.

For engineers reviewing the AZV5002 datasheet, AZV5002 pinout, AZV5002 application, or AZV5002 equivalent, key selection criteria include its dual-detection capability (L_DET/GND_DET + S/E_DET/S/E_REF), ultra-low IDD/IDD2 current consumption, integrated pull-ups, and U-QFN1418-10 footprint compatibility with space-constrained portable designs.

Technical Context

The AZV5002 implements two independent detection paths: one for headset presence using L_DET and GND_DET inputs with internal pull-ups and comparator-based logic, and another for SEND/END button press via a dedicated comparator with user-configurable reference voltage on S/E_REF. Both paths feed into an internal OR gate that drives the DET output.

Its MIC output uses an integrated N-channel MOSFET (R_DS(ON) = 0.55Ω typ) to actively sink up to 2mA, enabling direct biasing of microphone signals without external transistors. The dual supply architecture (VDD for headset detection, VDD2 for S/E comparator) allows independent voltage optimization and sequencing control.

Key Specifications

Pinout & Package

U-QFN1418-10 package: 10-pin, 1.4 mm × 1.8 mm body, 0.4 mm pitch, exposed thermal pad, RoHS-compliant "Green" molding compound.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar headset detection applications.

Compared with MAX14525 and TS3A5017, the AZV5002 uniquely integrates headset presence, SEND/END button, and MIC bias control in one die-reducing component count by 3–5 parts while delivering 60% lower quiescent current and eliminating firmware dependency for basic detection tasks.

Availability

AZV5002 is available at Aetrix Electronics and suitable for smartphone, tablet, and wearable device designs requiring stable component supply, long-term lifecycle support, and miniaturized audio interface solutions.

Supply support for AZV5002 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, low-power solutions for consumer, computing, and industrial markets.

The AZV5002 belongs to Diodes' audio interface detection product line, engineered specifically to replace mechanical switches and discrete detection circuits in space-constrained portable electronics with integrated, low-quiescent-current solutions.

FAQ

What is the recommended decoupling for VDD and VDD2?

Place a 0.1µF ceramic capacitor as close as possible to each of VDD (Pin 3) and VDD2 (Pin 10), with short traces to GND (Pin 1). This minimizes supply noise coupling into the sensitive comparator inputs and ensures stable detection thresholds across temperature and load conditions.

Can the AZV5002 support both CTIA and OMTP headset standards simultaneously?

Yes-the dual-input L_DET and GND_DET architecture allows detection regardless of ground/mic pin assignment. To support both standards without hardware change, use a crosspoint switch (e.g., TMUX1574) upstream to route contacts correctly before connecting to AZV5002 detection pins.

How does the MIC output behave when no headset is connected?

When no headset is present, the internal N-channel MOSFET turns on and pulls MIC (Pin 2) near ground (<5.5mV at 1mA sink), effectively muting the microphone path. When a headset is inserted, the MOSFET turns off, allowing the external 2.2kΩ pull-up to bias the MIC line to the system's MIC bias voltage.

What is the minimum external pull-up resistor value for the MIC pin?

The MIC pin can sink up to 2mA. With a 2.3V MIC bias voltage, the minimum recommended pull-up is 1.15kΩ (2.3V ÷ 2mA) to ensure full saturation of the internal MOSFET. Standard 2.2kΩ is preferred for margin and noise immunity, especially in noisy RF environments.