Diodes Incorporated PAM8010NHR

Overview

PAM8010NHR from Diodes Incorporated is a 2W filterless Class-D stereo audio amplifier with integrated anti-saturation protection, 64-step DC volume control, and adjustable maximum output power setting via VPL voltage. It delivers 1.9W into 4Ω at 5V with <0.08% THD+N, operates from 2.5–5.5V, and targets portable speaker and notebook audio subsystems requiring low-EMI, high-efficiency amplification without external LC filters.

For engineers reviewing the PAM8010NHR datasheet, PAM8010NHR pinout, PAM8010NHR application, or PAM8010NHR equivalent, key selection criteria include its anti-saturation gain adjustment behavior, VPL-based power limiting (0–2.8W range), SSOP-24L package thermal resistance (96°C/W), mute/shutdown logic thresholds, and compatibility with single-supply 3–4-cell battery systems.

Technical Context

The PAM8010NHR implements a dual-channel PWM-based Class-D architecture with independent left/right power stages, internal 250kHz oscillator, and analog reference generation at VDD/2. Its anti-saturation function continuously monitors PWM duty cycle to detect clipping and dynamically reduces gain in 0.5dB steps with 32µs attack time and 250ms release time per step.

DC volume control is implemented via 64-step linear-in-dB gain adjustment (–75dB to +24dB), while max output power is set by an external resistor divider on VPL (0.4–1.2V), enabling precise speaker protection across platforms. The device integrates short-circuit protection, thermal shutdown at 150°C with 30°C hysteresis, and under-voltage lockout at 2.0V.

Key Specifications

Pinout & Package

Package: SSOP-24L (5.0mm × 7.5mm, 0.635mm pitch), thermal resistance θ_JA = 96°C/W - suitable for compact PCB layouts with moderate power dissipation requirements.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Class-D stereo amplifier applications.

Compared with TPA2013D1RTJR and PAM8302AHR, the PAM8010NHR uniquely combines filterless operation, hardware-based anti-saturation, and VPL-configurable power limiting - enabling robust speaker protection and reduced system-level design complexity in portable stereo audio.

Availability

PAM8010NHR is available at Aetrix Electronics and suitable for portable speakers, notebook computers, VoIP speakerphones, and portable DVD players requiring stable component supply, consistent SSOP-24L packaging, and long-term industrial lifecycle support.

Supply support for PAM8010NHR 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in IATF 16949-certified facilities.

The PAM series targets portable audio applications with integrated protection, high efficiency, and minimal external components - designed specifically for cost-sensitive, space-constrained consumer electronics.

FAQ

What is the recommended decoupling for PAM8010NHR's VDD/2 pin?

A 0.47µF to 1.0µF ceramic capacitor must be placed directly between VDD/2 and GND. This capacitor stabilizes the internal analog reference during startup and shutdown, reduces power supply coupling into the output stage, and minimizes pop noise. Larger values improve pop suppression but do not enhance THD+N beyond 1.0µF.

How does the anti-saturation function interact with the VPL power limit setting?

Anti-saturation operates independently of VPL: it detects PWM duty-cycle saturation and reduces gain in real time to prevent clipping, while VPL sets the absolute maximum output power ceiling. When both are active, anti-saturation enforces instantaneous clipping prevention, and VPL defines the upper bound of sustained output level - together they provide layered speaker protection.

Can PAM8010NHR operate from four alkaline batteries?

No - four fresh alkaline batteries exceed the 6.0V absolute maximum rating. The datasheet explicitly recommends using either three alkaline cells (4.5V) or four Ni-MH cells (4.8V). Exceeding 6.0V risks permanent damage, even briefly during power-on surge.

What is the minimum input coupling capacitor value for optimal pop performance?

Input capacitor (CI) should be minimized based on required low-frequency response - typically 0.22µF to 1.0µF for portable systems targeting >100Hz. Smaller values reduce turn-on pop amplitude by limiting charge time to the internal DC bias point, but must maintain sufficient low-end extension for the target speaker's frequency response.