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STMicroelectronics TS486IST
- Part No.:
- TS486IST
- Manufacturer:
- STMicroelectronics
- Category:
- Audio Amplifiers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TS486IST.pdf
- Description:
- IC AMP AB STEREO 108MW 8MINISO
- Quantity:
- Payment:
- Shipping:
Inventory:3,961
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Product details
Overview
TS486IST from STMicroelectronics is a dual-channel, unity-gain stable audio power amplifier optimized for stereo headphone drive in portable electronics. It delivers 102 mW per channel into 16Ω at 5V with ≤0.1% THD+N at 1 kHz, operates from 2V to 5.5V, and features active-low standby mode reducing current to 10 nA (typ). Its SO8 package supports mobile phone, PDA, and embedded audio motherboard applications.
For engineers reviewing the TS486IST datasheet, TS486IST pinout, TS486IST application, or TS486IST equivalent, key selection criteria include low-voltage operation (2–5.5 V), 103 dB(A) SNR, 83 dB crosstalk rejection at 1 kHz, 58 dB PSRR, and integrated click-reduction circuitry - all critical for battery-powered audio front-ends requiring high fidelity and ultra-low quiescent power.
Technical Context
The TS486IST implements a rail-to-rail output stage with external gain-setting capability (via RIN/RFEED) or fixed-gain variants (0/6/12 dB), supporting both single-ended and capacitor-coupled headset loads. Its internal biasing enables stable operation down to 2V supply while maintaining ≥103 dB(A) SNR and ≤1 mV input offset voltage across –40°C to +85°C.
It integrates an ON/OFF click suppression circuit, short-circuit current limiting (115 mA max into 16Ω), and thermal shutdown protection. The amplifier is unity-gain stable with 1.1 MHz GBP and 0.4 V/µs slew rate, designed specifically for low-THD, low-noise stereo headphone amplification-not line drivers or speaker-level outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 5.5 V - enables direct integration with Li-ion (3.0–4.2 V) and single-cell alkaline/nickel-based systems without LDO pre-regulation. |
| Output Power @ 5V | 102 mW per channel into 16Ω @ 0.1% THD+N - sufficient for loud, distortion-free playback on standard stereo headphones. |
| Quiescent Current | 2.5 mA max - minimizes battery drain during active audio playback in portable devices. |
| Standby Current | 10 nA typ - achieves near-zero power consumption when disabled via active-low SHUTDOWN pin. |
| Signal-to-Noise Ratio | 103 dB(A) - ensures high-fidelity audio reproduction with negligible background noise in quiet listening environments. |
| Crosstalk Rejection | 83 dB at 1 kHz - prevents audible channel bleed in stereo headphone applications, preserving imaging and separation. |
| PSRR | 58 dB at 1 kHz - suppresses ripple and noise from noisy shared power rails common in system-on-module designs. |
Pinout & Package
TS486IST is housed in an SO8 (Small Outline Integrated Circuit, 150 mil width) package with exposed pad not electrically connected. Pin numbering follows standard SO8 top-view convention (pin 1 = BYPASS, pin 8 = VIN(1)).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BYPASS | Internal reference decoupling node | Connects 1 µF capacitor to GND to stabilize internal bias voltage and reduce noise sensitivity. |
| 2 - GND | Analog and power ground reference | Must be tied to low-impedance system ground plane; separates analog return paths from digital switching noise. |
| 3 - SHUTDOWN | Active-low enable control input | Pulled low to activate amplifier; high (≥1.5 V) places device in 10 nA standby - used for system-level power sequencing. |
| 4 - Vcc | Positive supply rail input | Accepts 2–5.5 V; requires local 1 µF ceramic bypass capacitor to GND for transient stability. |
| 5 - OUT(2) | Channel 2 output driver | Delivers amplified audio signal to right-channel headphone load; rail-to-rail swing supports full dynamic range. |
| 6 - OUT(1) | Channel 1 output driver | Delivers amplified audio signal to left-channel headphone load; electrically isolated from OUT(2) to maintain >80 dB crosstalk. |
| 7 - VIN(2) | Inverting input for channel 2 | Accepts differential or single-ended input; configured with external resistors for gain setting or grounded for fixed-gain operation. |
| 8 - VIN(1) | Inverting input for channel 1 | Independent input path for left channel; supports DC-coupled or AC-coupled configurations depending on system architecture. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range (2–5.5 V) | Enables direct interface with modern low-voltage SoCs and battery chemistries without intermediate regulation. |
| 103 dB(A) SNR | Supports high-resolution audio playback (24-bit/96 kHz) with audibly transparent noise floor in quiet environments. |
| Click/pop suppression circuitry | Eliminates audible transients during power-up, power-down, and standby transitions - no external RC snubbers required. |
| Unity-gain stable architecture | Permits use with minimal external components (no compensation network needed) across all gain configurations (0/6/12 dB). |
| Thermal and short-circuit protection | Automatically limits output current to 115 mA and shuts down above 150°C junction temperature - enhances field reliability. |
Applications
| Mobile Phone Audio Front-End | Embedded Computer Motherboard |
|---|---|
|
Use Scenario: Driving stereo 16Ω earpieces directly from baseband processor audio DAC outputs in slim smartphone form factors. IC Role / Device Role: Final-stage headphone amplifier providing gain, DC blocking, and low-impedance drive capability. Use Value: Delivers 102 mW/channel at 5V with <0.1% THD+N and 103 dB SNR - enabling loud, clean playback without external boost converters or LDOs. |
Use Scenario: Integrating stereo headphone output on industrial PC or thin-client motherboard with shared 3.3V rail. IC Role / Device Role: Dual-channel audio buffer and power amplifier bridging codec line-out to user-accessible 3.5mm jack. Use Value: 58 dB PSRR and 83 dB crosstalk rejection ensure clean audio despite proximity to CPU, memory, and switching regulators. |
| Portable Media Player | High-End TV Audio Interface |
|
Use Scenario: Battery-powered MP3 player requiring >10-hour playback time while driving 32Ω in-ear monitors. IC Role / Device Role: Low-quiescent-current headphone driver with standby control synchronized to UI sleep state. Use Value: 2.5 mA active current and 10 nA standby current extend runtime; 2V minimum operation preserves volume as battery discharges. |
Use Scenario: Adding dedicated headphone output to smart TV platform where main speakers are driven by Class-D amplifier. IC Role / Device Role: Isolated stereo headphone amplifier decoupled from main audio subsystem to prevent ground loops and interference. Use Value: Independent channel routing and >80 dB crosstalk rejection preserve stereo imaging quality even when main speakers are active. |
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 120 mW output into 16Ω at 5V; requires 2.7–5.5 V supply; uses different shutdown polarity (active-high). | Superior output power but lacks 2V operation - unsuitable for deeply discharged battery scenarios. | Select when maximum loudness is prioritized over ultra-low-voltage headroom and standby current is secondary. |
| TAS5707PWP | Digital-input Class-D amplifier with integrated DSP; 2.5 W into 8Ω; requires I²S input and external filter components. | Designed for speaker-level output, not headphone drive; incompatible pinout and signal chain architecture. | Not a functional substitute - only relevant if redesigning from analog to digital audio path and upgrading to speaker output. |
Compared with MAX4410ETE+ and TAS5707PWP, TS486IST uniquely balances 2V operation, 10 nA standby, and 103 dB SNR in a simple analog-input SO8 package - making it optimal for cost-sensitive, battery-constrained portable audio where design simplicity and low-voltage robustness are essential.
Availability
TS486IST is available at Aetrix Electronics and suitable for mobile phone audio subsystems, embedded computer motherboards, and portable media players requiring stable component supply with long-term lifecycle support.
Supply support for TS486IST 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, specializing in analog, microcontroller, power, and sensor technologies for industrial, automotive, and consumer markets.
The TS486IST belongs to ST's audio power amplifier product line, engineered specifically for low-voltage, low-power stereo headphone drive in space-constrained portable electronics - emphasizing SNR, crosstalk, and standby efficiency over raw output wattage.
FAQ
What is the minimum supply voltage for reliable operation of TS486IST?
The TS486IST is fully specified down to 2.0 V supply voltage, delivering 12 mW per channel into 32Ω at 0.3% THD+N. At this rail, output swing remains functional (VOL = 0.24 V, VOH = 1.73 V into 32Ω), enabling continued audio playback during deep battery discharge in portable systems.
Does TS486IST require external gain-setting resistors?
No - TS486IST supports both external gain configuration (using RIN/RFEED for custom gains) and fixed-gain variants (TS486-1IST = 0 dB, TS486-2IST = 6 dB, TS486-4IST = 12 dB). The base TS486IST part is externally configurable; fixed-gain versions are orderable separately with suffixes.
How does the SHUTDOWN pin behave, and what logic level activates the amplifier?
The SHUTDOWN pin is active-low: pulling it to GND enables normal operation; raising it to ≥1.5 V (up to VCC) places the device in standby mode with 10 nA typical current draw. This matches standard microcontroller GPIO output levels and simplifies power sequencing in battery-powered designs.
Can TS486IST drive 32Ω headphones effectively at 3.3V supply?
Yes - at 3.3 V, TS486IST delivers 38 mW per channel into 16Ω and 23 mW into 32Ω at 0.1% THD+N (1 kHz). With 98 dB(A) SNR and 80 dB crosstalk at 32Ω, it provides ample volume and fidelity for most in-ear and on-ear headphones in mid-tier portable devices.
TS486IST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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-MiniSO
TS486IST FAQ
1.How can I place an order for TS486IST through Aetrix?
Please submit a Request for Quotation (RFQ) for TS486IST 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 TS486IST reliable?
The price and inventory of TS486IST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS486IST is usually 5 days.
3.What payment methods are accepted for TS486IST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS486IST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS486IST?
TS486IST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS486IST 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 TS486IST?
For technical support, including TS486IST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS486IST requirements.
6.How does Aetrix verify that TS486IST is sourced from the original manufacturer or authorized distributors?
All TS486IST 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 TS486IST meets industry standards.
7.What is the process for return or replacement of TS486IST?
All TS486IST units undergo pre-shipment inspection (PSI). If there is an issue with TS486IST, 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 TS486IST part is unused and in its original packaging.
Return procedure for TS486IST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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