PAM8403
Class-D Stereo Audio AmplifierThe PAM8403 is a class-d stereo audio amplifier from Diodes Incorporated. View the full PAM8403 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Official PAM8403 datasheet (PDF) — the source this page was extracted from.
PAM8403 Key Specifications
| Parameter | Value |
|---|---|
| SNR | 80dB |
| Efficiency | up to 90% (87% typ at 8Ω) |
| PSRR (100Hz) | -59dB |
| Closed Loop Gain | 24dB (max) |
| Shutdown Current | <1µA |
| Package Dimensions | SO-16, 9.80-10.00mm x 5.90-6.10mm, 1.27mm pitch |
| Switching Frequency | 260kHz |
| THD+N (5V, 1W, 8Ω) | 0.15% |
| Supply Voltage Range | 2.5V to 5.5V |
| Operating Temperature Range | -40°C to +85°C |
| Over Temperature Protection | 140°C trip, 30°C hysteresis |
| Quiescent Current (5V, No Load) | 16mA |
| Output Power (THD+N=10%, 4Ω, 5V) | 3W |
| Output Power (THD+N=10%, 8Ω, 5V) | 1.8W |
| Thermal Resistance (Junction To Ambient) | 110°C/W |
PAM8403 Overview
Part: PAM8403 — Diodes Incorporated
Type: Filterless Class-D Stereo Audio Amplifier
Description: 3 W stereo filterless Class-D audio amplifier operating from 2.5 V to 5.5 V with up to 90% efficiency and low THD+N.
Operating Conditions:
- Supply voltage: 2.5 to 5.5 V
- Operating temperature: -40 to +85 °C
- Junction temperature: -40 to +125 °C
Absolute Maximum Ratings:
- Max supply voltage: 6.0 V
- Max junction/storage temperature: 150 °C (storage: -65 to +150 °C)
Key Specs:
- Output power: 3.2 W typ. (VDD = 5.0 V, THD+N = 10%, f = 1 kHz, RL = 4 Ω)
- Output power: 1.8 W typ. (VDD = 5.0 V, THD+N = 10%, f = 1 kHz, RL = 8 Ω)
- Output power: 2.5 W typ. (VDD = 5.0 V, THD+N = 1%, f = 1 kHz, RL = 4 Ω)
- Total harmonic distortion plus noise (THD+N): 0.15% typ. (VDD = 5.0 V, PO = 1 W, RL = 8 Ω, f = 1 kHz)
- Quiescent current: 16 mA typ. (VDD = 5.0 V, no load)
- Shutdown current: < 1 μA typ. (VDD = 2.5 V to 5.5 V, VSD = 0.3 V)
- Efficiency: up to 90% (RL = 8 Ω, THD = 10%, f = 1 kHz)
- Switching frequency: 260 kHz typ. (VDD = 3.0 V to 5.0 V)
- Closed loop gain: 24 dB typ. (VDD = 3 V to 5 V)
Features:
- 3 W output at 10% THD with a 4 Ω load and 5 V power supply
- Filterless architecture drives speakers directly
- Low quiescent current and low EMI
- Short circuit protection
- Thermal shutdown with automatic recovery
- Few external components required
Applications:
- LCD Monitors / TV Projectors
- Notebook Computers
- Portable Speakers
- Portable DVD Players, Game Machines
- Cellular Phones / Speaker Phones
Package:
- SOP-16 (SO-16)
PAM8403 Features
- 3W Output at 10% THD with a 4Ω Load and 5V Power Supply
- Filterless, Low Quiescent Current and Low EMI
- Low THD+N
- Superior Low Noise
- Efficiency up to 90%
- Short Circuit Protection
- Thermal Shutdown
- Few External Components to Save the Space and Cost
- Pb-Free Package
PAM8403 Applications
PAM8403 Pin Configuration
PAM8403 Electrical Characteristics
| Symbol | Parameter | Test Conditions | Test Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|---|
| V DD | Supply Voltage | V DD = 5.0V | 2.5 | 3.2 | 5.5 | V W | |
| THD+N = 10%, f = 1KHz, R L = 4Ω | V DD = 3.6V V DD = 3.2V V DD = 5.0V | 1.6 1.3 2.5 | W W | ||||
| THD+N = 1%, f = 1KHz, R L = 4Ω | V DD = 3.6V V DD = 3.2V | 1.3 0.85 | W W | ||||
| P O | Output Power | THD+N = 10%, f = 1KHz, R L = 8Ω | V DD = 5.0V | 1.8 | |||
| THD+N = 10%, f = 1KHz, R L = 8Ω THD+N = 10%, f = 1KHz, R L = 8Ω | V DD = 3.6V V DD = 3.2V | 0.9 0.6 | W | ||||
| THD+N = 1%, f = 1KHz, R L = 8Ω | V DD = 5.0V | 1.4 | W | ||||
| THD+N = 1%, f = 1KHz, R L = 8Ω | V DD = 3.6V | 0.72 | W | ||||
| THD+N = 1%, f = 1KHz, R L = 8Ω | V DD = 3.2V | 0.45 | W | ||||
| THD+N | Total Harmonic Distortion Plus | V DD = 5.0V, P O = 1W, R L = 8Ω | 0.15 | % | |||
| THD+N | Total Harmonic Distortion Plus | V DD = 3.6V, P O = 0.1W, R L = 8Ω | f = 1kHz | 0.11 | % | ||
| THD+N | Noise | V DD = 5.0V, P O = 0.5W, R L = 4Ω | 0.15 | % | |||
| THD+N | Total Harmonic Distortion Plus | V DD = 3.6V, P O = 0.2W, R L = 4Ω | f = 1kHz | 0.11 | % | ||
| G V | Closed Loop Gain | V DD = 3V to 5V | 24 | dB | |||
| PSRR | Power Supply Ripple Rejection | V DD = 5.0V, Inputs AC-Grounded with C IN = 0.47μF | f = 100Hz f = 1kHz | -59 -58 | dB | ||
| C S | Crosstalk | V DD = 5.0V, P O = 0.5W, R L = 8Ω, G V = 20db | f = 1kHz | -95 | dB | ||
| SNR | Signal-to-Noise Ratio | V DD = 5.0V, V ORMS = 1V, G V = 20db | f = 1kHz | 80 | dB | ||
| V N | Output Noise | V DD = 5.0V, Inputs AC-Grounded No | A-Weighting | ||||
| Dyn | Dynamic Range | with C IN = 0.47μF V = 5.0V, THD = 1% | A-Weighting f = 1kHz | 100 150 | μV dB | ||
| η | Efficiency | DD R L = 8Ω, THD = 10% R L = 4Ω, THD = 10% | f = 1kHz | 90 87 83 | % | ||
| I Q | V DD = 5.0V | 16 | |||||
| Quiescent Current | V DD = 3.6V V DD = 3.0V | No Load | 10 8 | mA | |||
| I MUTE | Muting Current | V DD = 5.0V | V MUTE = 0.3V | 3.5 | mA | ||
| I SD | Shutdown Current | V DD = 2.5V to 5.5V | V SD = 0.3V | < 1 | μA | ||
| R DS(ON) | Static Drain-to-Source On-State Resistor | = 5V I DS = 500mA, V GS | PMOS NMOS | 180 140 | mΩ | ||
| f SW | Switching Frequency | V DD = 3.0V to 5.0V | 260 | kHz | |||
| V OS | Output Offset Voltage | V IN = 0V, V DD = 5.0V | 10 | mV | |||
| V IH | Enable Input High Voltage | V DD = 5.0V | 1.5 | 1.4 | |||
| V IL | Enable Input Low Voltage | V DD = 5.0V | 0.7 | 0.4 | V | ||
| V IH | MUTE Input High Voltage | V DD = 5.0V | 1.5 | 1.4 | |||
| V IL | MUTE Input Low Voltage | V DD = 5.0V | 0.7 | 0.4 | V | ||
| OTP | Over Temperature Protection | 140 | V | ||||
| OTH | Over Temperature Hysterisis | No Load, Junction Temperature | V DD = 5.0V | 30 | V |
PAM8403
PAM8403 Absolute Maximum Ratings
These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground.
| Parameter | Rating | Unit |
|---|---|---|
| Supply Voltage | 6.0 | V |
| Input Voltage | -0.3 to V DD +0.3V | V |
| Operation Temperature Range | -40 to +85 | °C |
| Maximum Junction Temperature | 150 | °C |
| Operation Junction Temperature | -40 to +125 | °C |
| Storage Temperature | -65 to +150 | °C |
| Soldering Temperature | 300, 5 sec | °C |
PAM8403 Recommended Operating Conditions
| Parameter | Rating | Unit |
|---|---|---|
| Supply Voltage Range | 2.5 to 5.5 | V |
| Operation Temperature Range | -40 to +85 | °C |
| Junction Temperature Range | -40 to +125 | °C |
PAM8403 Thermal Information
| Parameter | Package | Symbol | Max | Unit |
|---|---|---|---|---|
| Thermal Resistance (Junction to Ambient) | SOP-16 | θ JA | 110 | °C/W |
| Thermal Resistance (Junction to Case) | SOP-16 | θ JC | 23 | °C/W |
PAM8403
PAM8403 Typical Application
PAM8403 Package Information
SO-16
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