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

STMicroelectronics TS486IDT

Name: TS486IDT
Brand: STMicroelectronics
SKU: TS486IDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS486IDT

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

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

Datasheet:: TS486IDT.pdf

Description:: IC AMP CLASS AB STEREO 108MW 8SO

Quantity:: RFQ Add To RFQ list

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Inventory:7,440

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Product details

Overview

TS486IDT from STMicroelectronics is a dual-channel, unity-gain stable audio power amplifier optimized for stereo headphone drive in low-voltage portable systems. It delivers 102mW per channel into 16Ω at 5V (0.1% THD+N), operates from 2V to 5.5V, features active-low standby mode (10nA typical), and supports external gain configuration or fixed-gain variants (0/6/12dB). It is used in mobile phone audio subsystems requiring low-noise, high-crosstalk-immunity analog output stages.

For engineers reviewing the TS486IDT datasheet, TS486IDT pinout, TS486IDT application, or TS486IDT equivalent, key selection criteria include its 103dB(A) SNR at 5V, 83dB crosstalk rejection at 1kHz, PSRR of 58dB, shutdown-controlled quiescent current (≤2.5mA), and SO8 package compatibility with space-constrained PCB layouts.

Technical Context

The TS486IDT implements a dual rail-to-rail output Class-AB architecture with integrated click/pop suppression circuitry and short-circuit current limiting. Its input stage uses a high-impedance (20kΩ) differential pair with 1mV max input offset voltage and 90–200nA bias current, enabling direct coupling with DC-blocking capacitors.

Gain is set externally via feedback resistors (R_FEED/R_IN) or selected from factory-trimmed fixed options (x1/x2/x4); it remains unity-gain stable across supply voltages (2–5.5V) and load impedances (≥16Ω), with 1.1MHz GBP and 0.4V/µs slew rate ensuring fidelity up to 20kHz.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2V to 5.5V - enables direct operation from single Li-ion or 3.3V/5V system rails without LDO.
Output Power (16Ω, 5V)	102mW @ 0.1% THD+N - sufficient for loud, low-distortion headphone playback at full volume.
Standby Current	10nA typical - allows battery-powered devices to maintain weeks of shelf life during sleep mode.
Signal-to-Noise Ratio	103dB(A) at 5V - ensures audible noise floor remains below -100dBu, critical for high-fidelity audio paths.
Crosstalk Rejection	83dB at 1kHz - prevents left/right channel leakage in stereo headset applications.
PSRR	58dB at 1kHz - suppresses ripple from noisy shared power domains (e.g., PMIC outputs).
Gain Bandwidth Product	1.1MHz - supports stable closed-loop operation up to 20kHz with margin for phase compensation.

Pinout & Package

TS486IDT is housed in an SO8 (Small Outline 8-pin) package with standard 1.27mm pitch, JEDEC MS-012AC compliant, and rated for -40°C to +85°C ambient operation.

Pin/Terminal	Circuit Role	Design Meaning
1 - BYPASS	Half-supply reference bypass	Connects to 1µF capacitor to stabilize internal V_CC/2 bias node; critical for rail-to-rail output swing.
2 - GND	Analog ground reference	Primary return path for input bias, output current, and bypass capacitor; must be low-impedance.
3 - SHUTDOWN	Active-low enable control	Pulled low to activate amplifier; high-Z or >1.5V disables output and reduces ICC to 10nA.
4 - V_CC	Positive supply input	Accepts 2–5.5V; powers both channels and internal bias circuitry; requires local 100nF ceramic decoupling.
5 - OUT(2)	Channel 2 output	Drives right-channel headphone load; rail-to-rail swing supports 4.52V_PP into 16Ω at 5V.
6 - OUT(1)	Channel 1 output	Drives left-channel headphone load; identical performance to OUT(2); differential routing minimizes crosstalk.
7 - IN(2)	Channel 2 inverting input	Accepts differential or single-ended audio signal; high-Z (20kΩ) input simplifies AC-coupling design.
8 - IN(1)	Channel 1 inverting input	Accepts differential or single-ended audio signal; matched to IN(2) for balanced stereo performance.

Key Features

Feature	Design Value
Unity-gain stability	Guaranteed stable with no external compensation across all loads ≥16Ω and supplies 2–5.5V.
Click/pop suppression	Integrated circuitry eliminates turn-on/turn-off transients without requiring external mute switches or timing delays.
Low-voltage operation	Delivers usable output power (7–102mW) down to 2V supply, supporting legacy and ultra-low-power battery designs.
Rail-to-rail output swing	Enables maximum dynamic range: VOL = 0.45V / VOH = 4.52V into 16Ω at 5V, minimizing headroom loss.
High PSRR & SNR	58dB PSRR and 103dB(A) SNR ensure clean audio even when sharing noisy system power rails.

Applications

Mobile Handset Audio

Portable Media Player

Use Scenario: Driving stereo headphones directly from baseband processor audio DAC outputs in GSM/UMTS smartphones.

IC Role / Device Role / Timing Role: Final-stage analog output buffer and power booster; accepts line-level input and delivers 102mW into 16Ω.

Use Value: Eliminates need for discrete op-amp + transistor stage, reducing BOM count and PCB area while maintaining THD+N < 0.1%.

Use Scenario: Amplifying decoded MP3/AAC audio signals for wired earbuds in flash-based portable players.

IC Role / Device Role / Timing Role: Dual-channel headphone driver with independent shutdown control per channel for mono/stereo mode switching.

Use Value: 10nA standby current extends battery runtime during pause/standby; 83dB crosstalk preserves stereo imaging fidelity.

Computer Motherboard Audio

Entry-Level Smart TV Audio

Use Scenario: Providing front-panel headphone jack output on desktop/laptop motherboards using HD Audio codec interface.

IC Role / Device Role / Timing Role: Line-driver amplifier with adjustable gain (via external resistors) to match varying DAC output levels.

Use Value: 20kΩ input impedance avoids loading codec outputs; 1.1MHz GBP ensures flat frequency response up to 20kHz.

Use Scenario: Delivering auxiliary headphone output on cost-sensitive smart TVs where main speakers are driven by separate Class-D amp.

IC Role / Device Role / Timing Role: Low-cost, integrated stereo headphone amplifier with fixed 0dB gain option (TS486-1 variant).

Use Value: SO8 footprint allows easy placement near panel connectors; 5.5V max rating accommodates unregulated 5V supply rails.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel headphone amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX4410ETE+	Higher 115mW output (16Ω/5V), but requires external compensation; 2.7–5.5V supply only.	Used in premium portable audio where higher output and lower THD (<0.02%) are prioritized over standby current.	Select MAX4410ETE+ if >100mW output and sub-0.05% THD are required; avoid if 2V operation or 10nA standby is mandatory.
TAS5342AIDBTR	Class-D, 1.5W output, but requires LC filter; 4.5–26V supply; no analog input stage.	Targeted at speaker drivers, not headphones; unsuitable for direct 16Ω load without filtering and level shifting.	Not a functional substitute: TAS5342AIDBTR is a speaker amplifier IC, not a headphone driver; incompatible pinout, topology, and signal chain.

Compared with TS486IDT, MAX4410ETE+ offers higher output power and lower distortion but sacrifices 2V operation and ultra-low standby current; TAS5342AIDBTR is architecturally incompatible-designed for bridged speaker loads, not single-ended headphone termination.

Availability

TS486IDT is available at Aetrix Electronics and suitable for mobile handset audio, portable media player design, and computer motherboard audio subsystems requiring stable component supply with long-term lifecycle visibility.

Supply support for TS486IDT 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, microcontrollers, and sensors for automotive, industrial, and consumer markets.

The TS486 series belongs to ST's audio power amplifier product line, designed specifically for low-voltage, low-power stereo headphone drive in battery-operated portable electronics with stringent size and efficiency constraints.

FAQ

What is the minimum supply voltage for guaranteed operation of TS486IDT?

The TS486IDT is fully specified and guaranteed to operate from 2V to 5.5V. At 2V, it delivers 7–13mW into 16Ω with ≤0.3% THD+N at 1kHz, maintains 93dB SNR, and draws ≤2.5mA supply current. Absolute maximum rating is 6V, but operation above 5.5V voids specification compliance.

Can TS486IDT drive 32Ω headphones, and what output power is achieved?

Yes - TS486IDT drives 32Ω loads with up to 64mW per channel at 5V (THD+N = 0.1%, 1kHz). At 3.3V, output is 23–36mW; at 2V, it delivers 7–9.5mW. The device's ≥16Ω minimum load requirement is met, and crosstalk remains ≥80dB, making it suitable for higher-impedance earbuds and studio-style headphones.

How does the SHUTDOWN pin function, and what logic level disables the amplifier?

The SHUTDOWN pin is active-low: pulling it to GND enables normal operation; driving it to V_CC (or >1.5V) places the device in standby, reducing supply current to 10nA typical. For TS486 variants (including TS486IDT), standby is asserted low; TS487 variants invert this behavior. No external pull-up/down is required - internal bias ensures defined state at power-up.

Is external gain-setting resistor configuration supported on TS486IDT?

Yes - TS486IDT supports external gain configuration via R_IN and R_FEED resistors on each channel's inverting input and feedback path. Gain is calculated as A_V = –R_FEED/R_IN. Fixed-gain variants (e.g., TS486-1IST) exist, but TS486IDT itself is the base external-gain version, allowing flexible 0dB, 6dB, or 12dB configurations without changing the IC.

TS486IDT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Class AB

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

Max Output Power x Channels @ Load:: 108mW x 2 @ 16Ohm

Voltage - Supply:: 2V ~ 5.5V

Features:: Depop, Short-Circuit Protection, Standby

Mounting Type:: Surface Mount

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

Grade:: -

Qualification:: -

Supplier Device Package:: 8-SOIC

TS486IDT FAQ

1.How can I place an order for TS486IDT through Aetrix?

Please submit a Request for Quotation (RFQ) for TS486IDT 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 TS486IDT reliable?

The price and inventory of TS486IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS486IDT is usually 5 days.

3.What payment methods are accepted for TS486IDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS486IDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS486IDT?

TS486IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS486IDT 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 TS486IDT?

For technical support, including TS486IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS486IDT requirements.

6.How does Aetrix verify that TS486IDT is sourced from the original manufacturer or authorized distributors?

All TS486IDT 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 TS486IDT meets industry standards.

7.What is the process for return or replacement of TS486IDT?

All TS486IDT units undergo pre-shipment inspection (PSI). If there is an issue with TS486IDT, 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 TS486IDT part is unused and in its original packaging.

Return procedure for TS486IDT:

1.Submit a request within 90 days.

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

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