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STMicroelectronics TS486IQT
- Part No.:
- TS486IQT
- Manufacturer:
- STMicroelectronics
- Category:
- Audio Amplifiers
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
TS486IQT.pdf
- Description:
- IC AMP CLASS AB STER 108MW 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,964
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Product details
Overview
TS486IQT from STMicroelectronics is a dual-channel, single-ended 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, and achieves 103dB(A) SNR and 83dB crosstalk rejection at 1kHz - deployed in mobile phones and portable audio players.
For engineers reviewing the TS486IQT datasheet, TS486IQT pinout, TS486IQT application, or TS486IQT equivalent, key selection criteria include its 2.5mA max quiescent current, unity-gain stability with external or fixed gain options, DFN 3×3mm package thermal performance (RthJA = 70°C/W), and click-reduction circuitry for clean audio turn-on/off transitions.
Technical Context
The TS486IQT implements a rail-to-rail output stage with internal biasing enabling operation down to 2V supply while maintaining >100mW output into 16Ω. Its fully differential input architecture supports both inverting and non-inverting configurations, with gain set externally via RIN/RFEED or fixed at 0/6/12dB variants.
Standby control is implemented as an active-low logic input (SHUTDOWN pin), reducing supply current to 10nA typical. The device integrates on-chip bypass filtering (BYPASS pin), short-circuit protection, and thermal shutdown - all verified across −40°C to +85°C ambient range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2V to 5.5V - enables direct integration with Li-ion battery (3.0–4.2V) or 3.3V/5V system rails without LDO. |
| Output Power | 102mW @ 5V, 16Ω, 0.1% THD+N - sufficient for high-SPL headphones (≥110dB SPL/V) with low distortion. |
| Quiescent Current | 2.5mA max - minimizes battery drain during active playback in portable devices. |
| Standby Current | 10nA typical - extends shelf life and enables ultra-low-power sleep states in always-on audio subsystems. |
| SNR (A-weighted) | 103dB @ 5V - ensures audible noise floor remains below −100dBV, critical for high-fidelity playback. |
| Crosstalk Rejection | 83dB @ 1kHz - prevents left/right channel leakage in stereo imaging-sensitive applications. |
| PSRR | 58dB @ 1kHz - suppresses ripple from noisy shared power rails without requiring dedicated LDO. |
Pinout & Package
TS486IQT is housed in a thermally enhanced DFN-8 (3mm × 3mm, 0.5mm pitch) package with exposed thermal pad (EP) for PCB heat dissipation. Pin 1 is marked by a dot; top-view pin numbering follows standard DFN convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BYPASS) | Bias reference decoupling node | Connects to 1µF capacitor to stabilize internal bias voltage; critical for THD+N and PSRR performance. |
| 2 (GND) | Analog/digital ground reference | Primary return path for output stage and input bias currents; must be tied to low-impedance ground plane. |
| 3 (SHUTDOWN) | Active-low enable control | Pull low to activate amplifier; pull high (≥VCC) to enter 10nA standby - no external pull-up required. |
| 4 (VCC) | Positive supply input | Accepts 2–5.5V; requires local 100nF ceramic decoupling adjacent to pin for high-frequency PSRR. |
| 5 (OUT2) | Channel 2 output driver | Capable of ±106mA peak current into 16Ω load; rail-to-rail swing enables full dynamic range at low VCC. |
| 6 (OUT1) | Channel 1 output driver | Matched to OUT2 for stereo balance; supports DC-coupled loads when used with external virtual ground. |
| 7 (IN2) | Inverting input for channel 2 | Configurable for fixed gain (−1/−2/−4) or external feedback; high-Z (20kΩ) input simplifies source interfacing. |
| 8 (IN1) | Inverting input for channel 1 | Electrically identical to IN2; differential input pair enables common-mode noise rejection in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable architecture | Eliminates need for external compensation components; supports direct connection to DAC outputs without phase margin risk. |
| On/off click reduction | Internal soft-start and output discharge circuitry suppresses transient pop/click artifacts during power-up/down sequences. |
| Short-circuit current limiting | Clamps output current to ≤115mA (typ.) during fault conditions, preventing latch-up and enabling safe hot-plug headset insertion. |
| Thermal shutdown protection | Activates at TJ ≥ 150°C and auto-recovers upon cooling - protects against sustained overload in sealed enclosures. |
| Low-voltage operation | Delivers usable audio power (≥7mW/channel) even at 2V supply, extending playback time in deeply discharged batteries. |
Applications
| Mobile Headphone Amplifier | USB-C Audio Dongle |
|---|---|
|
Use Scenario: Driving 16–32Ω stereo headphones from a smartphone baseband processor's line-out or DAC output. IC Role / Device Role / Timing Role: Final-stage analog output buffer and power booster, converting low-level line signals to headphone-compatible voltage/current levels. Use Value: Enables loud, low-distortion playback without external boost converters or discrete transistors - reducing BOM count and PCB area. |
Use Scenario: Integrated audio interface in compact USB-C to 3.5mm adapter dongles with embedded DAC and analog amplification. IC Role / Device Role / Timing Role: Dual-channel Class-AB output driver synchronized to USB audio packet timing; handles variable sample rates (44.1/48kHz). Use Value: Delivers 102mW/channel at 5V from USB bus power, eliminating need for separate charge-pump or boost ICs in space-constrained dongles. |
| Industrial Portable Monitor Audio | Smart Speaker Auxiliary Output |
|
Use Scenario: Providing local headphone monitoring on ruggedized handheld HMIs or field service tablets operating from 3.3V system rails. IC Role / Device Role / Timing Role: Low-noise, high-PSRR analog output stage isolating sensitive audio path from noisy digital processors and display drivers. Use Value: 58dB PSRR and 83dB crosstalk ensure clean audio despite shared 3.3V supply with LCD controllers and wireless radios. |
Use Scenario: Secondary audio output for auxiliary headphone use in smart speakers that primarily drive built-in loudspeakers. IC Role / Device Role / Timing Role: Standalone stereo amplifier powered from main system 5V rail, activated only when headphone jack is inserted. Use Value: 10nA standby current allows persistent connection to system power without impacting speaker-only battery runtime. |
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 120mW output @ 5V/16Ω but requires 2.7V min supply; no active-low standby (enable is active-high). | Preferred where higher output headroom is needed and system logic uses active-high enable signals. | Select MAX4410ETE+ if >102mW output or active-high control is mandatory; verify thermal layout for SO-8 package. |
| TAS5707PAP | Digital-input Class-D amplifier with integrated DSP; 1.2W output but requires I²S input and external LC filter. | Suitable for systems with digital audio sources and space for passive filtering; not pin-compatible or functionally equivalent. | Choose TAS5707PAP only when migrating to digital audio architecture - not a drop-in replacement for analog-line-in designs. |
Compared with MAX4410ETE+ and TAS5707PAP, TS486IQT offers superior low-voltage operation (down to 2V), lower quiescent current (2.5mA vs 3.2mA), and simpler analog interface - making it optimal for cost-sensitive, battery-powered analog audio endpoints.
Availability
TS486IQT is available at Aetrix Electronics and suitable for mobile phone audio subsystems, USB-C audio dongles, industrial portable monitors, and smart speaker auxiliary outputs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TS486IQT 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, Switzerland, designing and manufacturing analog, mixed-signal, power, and microcontroller solutions for industrial, automotive, and consumer markets.
The TS486 series belongs to ST's audio power amplifier product line, engineered specifically for ultra-low-power, high-fidelity headphone drive in space- and battery-constrained portable electronics.
FAQ
What is the minimum recommended load impedance for TS486IQT?
The TS486IQT is specified and characterized for loads ≥16Ω. Driving impedances below 16Ω risks exceeding the 115mA maximum output current limit, triggering thermal shutdown or increasing THD+N beyond 1%. For 8Ω headphones, a series resistor or external current-limiting network is required to maintain reliability.
Can TS486IQT operate in bridged-tied-load (BTL) mode?
No - TS486IQT is designed exclusively for single-ended output configuration. Its output pins (OUT1/OUT2) are not complementary and lack the internal architecture for BTL operation. For BTL applications, ST recommends the TPA6130A2 or equivalent dual BTL-capable amplifiers.
Is the BYPASS pin mandatory for stable operation?
Yes - the BYPASS pin must be connected to a 1µF X7R ceramic capacitor referenced to GND. Omitting this capacitor degrades PSRR by up to 20dB and increases THD+N by >0.1%, as confirmed in electrical characterization across all supply voltages and load conditions.
Does TS486IQT support non-inverting gain configurations?
No - the TS486IQT has inverting-input architecture only (VIN1/VIN2 are inverting inputs). Non-inverting operation requires external op-amp buffering or signal inversion upstream. Fixed-gain versions (e.g., TS486-1IQT) retain this inverting topology with gain set internally.
TS486IQT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- 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-DFN (3x3)
TS486IQT FAQ
1.How can I place an order for TS486IQT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS486IQT 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 TS486IQT reliable?
The price and inventory of TS486IQT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS486IQT is usually 5 days.
3.What payment methods are accepted for TS486IQT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS486IQT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS486IQT?
TS486IQT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS486IQT 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 TS486IQT?
For technical support, including TS486IQT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS486IQT requirements.
6.How does Aetrix verify that TS486IQT is sourced from the original manufacturer or authorized distributors?
All TS486IQT 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 TS486IQT meets industry standards.
7.What is the process for return or replacement of TS486IQT?
All TS486IQT units undergo pre-shipment inspection (PSI). If there is an issue with TS486IQT, 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 TS486IQT part is unused and in its original packaging.
Return procedure for TS486IQT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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