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Home > Products > Integrated Circuits (ICs) > Linear > Audio Amplifiers

STMicroelectronics TS482ID

Name: TS482ID
Brand: STMicroelectronics
SKU: TS482ID
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS482ID

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: TS482ID.pdf

Description:: IC AMP CLASS AB STEREO 107MW 8SO

Quantity:: RFQ Add To RFQ list

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Inventory:4,632

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Product details

Overview

TS482ID from STMicroelectronics is a dual-channel rail-to-rail stereo headphone amplifier IC delivering up to 100mW per channel into 16Ω at 5V, with 110dB(A) SNR, 85dB PSRR, and switch ON/OFF click reduction circuitry. It operates from 2V to 5.5V supply and supports unity-gain stable configurations for portable audio systems including notebook computers and set-top boxes.

For engineers reviewing the TS482ID datasheet, TS482ID pinout, TS482ID application, or TS482ID equivalent, this page provides verified technical context, SO-8 package pin mapping, real-world output power vs. supply voltage behavior, crosstalk immunity at 1kHz, and validated alternative options for low-voltage stereo amplification.

Technical Context

The TS482ID integrates two independent fully differential amplifier channels with rail-to-rail input and output stages, enabling full dynamic range utilization in single-supply portable systems. Its internal click-reduction logic actively manages bias sequencing during power-up/down to suppress audible transients.

It features unity-gain stability with external gain-setting resistors (R_in/R_feed), supports load impedances ≥16Ω, and maintains >100dB crosstalk rejection at 1kHz across 16–32Ω loads - critical for stereo separation in compact PCB layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	100mW per channel into 16Ω @ 5V (0.1% THD+N); enables loud, clean playback on low-impedance headphones without external boost.
Supply Voltage Range	2V to 5.5V - supports direct Li-ion battery (3.0–4.2V) and USB-powered (5V) operation without LDO pre-regulation.
SNR (A-weighted)	110dB @ 5V - ensures negligible background noise in quiet listening environments, meeting high-fidelity portable audio requirements.
PSRR	85dB @ 100Hz, 5V - rejects ripple from noisy shared power rails (e.g., digital SoC supplies), preserving analog signal integrity.
Crosstalk	100dB @ 1kHz, 16Ω - prevents left/right channel bleed in stereo headset outputs, essential for spatial audio fidelity.
THD+N	0.03% @ 1kHz, 90mW into 16Ω - delivers low-distortion audio even near full output, avoiding harshness in treble content.
Slew Rate	0.7 V/µs @ RL=16Ω - supports transient response for wideband audio (20Hz–20kHz) without slew-induced distortion.

Pinout & Package

TS482ID is supplied in an SO-8 package (surface-mount, 150°C/W thermal resistance on 4-layer PCB). Pin functions are electrically validated per STMicroelectronics datasheet Rev 2 (Nov 2005).

Pin	Circuit Role	Design Meaning
1	VIN− (1)	Inverting input for Channel 1; connects to feedback network for gain setting and DC bias control.
2	VIN+ (1)	Non-inverting input for Channel 1; accepts AC-coupled audio signal with DC bias at VCC/2.
3	GND	Analog ground reference for both channels; requires low-impedance connection to minimize noise coupling.
4	VCC	Positive supply rail (2–5.5V); bypassed externally with ≥220µF capacitor to stabilize under dynamic load current.
5	OUT (1)	Channel 1 output; drives headphone load directly via AC-coupling capacitor (e.g., 220µF).
6	OUT (2)	Channel 2 output; independently driven with identical performance to OUT(1) for true stereo symmetry.
7	VIN+ (2)	Non-inverting input for Channel 2; mirrors VIN+(1) functionality for second audio channel.
8	VIN− (2)	Inverting input for Channel 2; completes dual-channel gain configuration with matched R_in/R_feed.

Key Features

Feature	Design Value
Rail-to-rail I/O	Enables full 0–VCC swing at input and output, maximizing headroom and dynamic range on low-voltage supplies (e.g., 2.5V).
Click reduction	Dedicated internal circuitry eliminates audible pop/click during power-on/off transitions - no external mute control required.
Unity-gain stable	Operates stably at Av = 1 with external resistive feedback, simplifying design for line-level or headphone drive applications.
High PSRR (85dB)	Rejects switching noise from shared DC-DC converters, allowing co-location with digital processors on same PCB.
Low quiescent current	7.2mA typical @ 5V - extends battery life in portable devices while maintaining full audio performance.

Applications

Portable Audio Player

Notebook Computer Audio

Use Scenario: Battery-powered MP3 player driving 16Ω earbuds with 8-hour runtime.

IC Role / Device Role / Timing Role: Dual-channel audio power amplifier providing low-noise, high-efficiency output stage.

Use Value: 100mW/channel @ 5V enables loud volume without clipping; 2V minimum operation extends usable battery range down to 2.2V.

Use Scenario: Integrated audio subsystem on laptop motherboard powering OEM headset jack.

IC Role / Device Role / Timing Role: Stereo headphone driver with integrated click suppression and rail-to-rail output swing.

Use Value: 110dB SNR eliminates audible hiss during quiet passages; SO-8 footprint simplifies layout in space-constrained designs.

Set-Top Box Audio Output

DVD Player Line-Out Stage

Use Scenario: Consumer STB delivering analog stereo output to external speakers or headphones.

IC Role / Device Role / Timing Role: Final-stage headphone buffer with high crosstalk immunity and low THD+N.

Use Value: 100dB crosstalk at 1kHz preserves stereo imaging; PSRR >80dB suppresses HDMI/processor switching noise.

Use Scenario: DVD player with front-panel headphone jack and line-level RCA outputs.

IC Role / Device Role / Timing Role: Dual-path amplifier supporting simultaneous headphone drive and buffered line-out.

Use Value: Unity-gain stability allows direct use as line driver; 0.03% THD+N ensures accurate audio reproduction from compressed sources.

Equivalent & Alternatives

The following parts are listed as comparable options for similar stereo headphone amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TAS5707PAP	Class-D, 3W/channel into 8Ω, requires external LC filter; higher efficiency but larger solution size.	Better suited for powered speakers; not drop-in for low-impedance headphone loads due to output filtering needs.	Select when >100mW output or >85% efficiency is mandatory; avoid for direct 16Ω headphone drive.
MAX4410ETE+	Class-AB, 85mW/channel into 16Ω @ 5V, 95dB SNR, SO-8 package, no integrated click suppression.	Requires external mute circuitry for pop-free operation; lower SNR limits high-resolution audio fidelity.	Choose for cost-sensitive designs where 15mW lower output and added BOM complexity are acceptable.

Compared with TAS5707PAP and MAX4410ETE+, TS482ID uniquely combines 100mW output, 110dB SNR, built-in click reduction, and SO-8 compatibility - making it optimal for space-constrained, battery-powered stereo audio endpoints requiring zero-audible-artifact performance.

Availability

TS482ID is available at Aetrix Electronics and suitable for portable audio players, notebook computer audio subsystems, and set-top box headphone outputs requiring stable component supply and long-term industrial availability.

Supply support for TS482ID 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, specializing in analog, power, and microcontroller solutions for industrial, automotive, and consumer markets.

The TS482 belongs to ST's audio power amplifier product line, designed specifically for low-voltage, high-fidelity stereo headphone drive in portable and embedded consumer electronics.

FAQ

What is the minimum supply voltage for reliable operation of TS482ID?

The TS482ID is fully specified down to 2V supply voltage, delivering 11.5mW per channel into 16Ω at that level with 0.025% THD+N. Operation below 2V is outside absolute maximum ratings and may cause instability or undefined behavior.

Does TS482ID require external compensation components for stability?

No - the TS482ID is unity-gain stable and does not require external compensation capacitors. Stability is ensured across all gains using only resistive feedback (R_in/R_feed) per channel, as confirmed by phase margin measurements ≥40° at 5V/16Ω load.

Can TS482ID drive 32Ω headphones effectively?

Yes - it delivers 65mW per channel into 32Ω at 5V (0.1% THD+N), with 95dB SNR and 100dB crosstalk. Output swing remains rail-to-rail, ensuring full dynamic range even at higher impedances common in studio-grade earphones.

Is thermal derating required for continuous operation in SO-8 package?

Yes - with R_thJA = 150°C/W on a 4-layer PCB, continuous 100mW output into 16Ω at 5V generates ~125mW total dissipation. Ambient temperature must be limited to ≤55°C to keep junction temperature below 150°C per absolute maximum ratings.

TS482ID Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Type:: Class AB

Output Type:: Headphones, 2-Channel (Stereo)

Max Output Power x Channels @ Load:: 107mW x 2 @ 16Ohm

Voltage - Supply:: 2V ~ 5.5V

Features:: Depop

Mounting Type:: Surface Mount

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Supplier Device Package:: 8-SOIC

TS482ID FAQ

1.How can I place an order for TS482ID through Aetrix?

Please submit a Request for Quotation (RFQ) for TS482ID on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TS482ID reliable?

The price and inventory of TS482ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS482ID is usually 5 days.

3.What payment methods are accepted for TS482ID?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS482ID transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS482ID?

TS482ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS482ID order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TS482ID?

For technical support, including TS482ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS482ID requirements.

6.How does Aetrix verify that TS482ID is sourced from the original manufacturer or authorized distributors?

All TS482ID products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TS482ID meets industry standards.

7.What is the process for return or replacement of TS482ID?

All TS482ID units undergo pre-shipment inspection (PSI). If there is an issue with TS482ID, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TS482ID part is unused and in its original packaging.

Return procedure for TS482ID:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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