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STMicroelectronics TS482IST
- Part No.:
- TS482IST
- Manufacturer:
- STMicroelectronics
- Category:
- Audio Amplifiers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TS482IST.pdf
- Description:
- IC AMP AB STEREO 107MW 8MINISO
- Quantity:
- Payment:
- Shipping:
Inventory:1,495
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Product details
Overview
TS482IST from STMicroelectronics is a dual-channel rail-to-rail stereo headphone amplifier IC designed for low-voltage portable audio systems. It delivers 100mW per channel into 16Ω at 5V, achieves 110dB(A) SNR and 85dB PSRR, and features switch ON/OFF click reduction circuitry for clean audio startup/shutdown in battery-powered devices.
For engineers reviewing the TS482IST datasheet, TS482IST pinout, TS482IST application, or TS482IST equivalent, this device is selected for ultra-low-voltage stereo amplification where THD+N ≤ 0.1%, crosstalk ≥ 100dB at 1kHz, and unity-gain stability with external resistor-set gain are required in space-constrained MiniSO-8 layouts.
Technical Context
The TS482IST integrates two independent, unity-gain stable operational amplifiers optimized for capacitive-coupled headphone drive. Its rail-to-rail input/output architecture enables full dynamic range utilization down to VCC = 2V, while internal click-reduction logic suppresses transient artifacts during enable/disable transitions.
It operates with fixed gain (via external Rin/Rfeed) or as a configurable amplifier, supporting load impedances from 16Ω to 32Ω. The device maintains >100dB crosstalk isolation at 1kHz and exhibits 1.35MHz typical gain-bandwidth product with 0.45V/µs slew rate under 16Ω loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Power | 100mW/channel into 16Ω @ 5V (0.1% THD+N); enables loud, low-distortion headphone playback from single Li-ion cell |
| Supply Voltage Range | 2V to 5.5V; supports direct operation from single-cell batteries or 3.3V/5V system rails without LDO |
| SNR | 110dB(A) @ 5V; ensures high-fidelity audio with negligible background noise in quiet listening environments |
| PSRR | 85dB @ 100Hz, 5V; rejects power supply ripple without requiring ultra-clean analog supplies |
| Crosstalk | 100dB @ 1kHz, 32Ω; prevents left/right channel bleed in stereo imaging-critical applications |
| THD+N | 0.02% typ. @ 1kHz, 16Ω, 5V; meets Hi-Fi-grade distortion requirements for premium portable audio |
| Gain Bandwidth | 1.35MHz typ.; supports full 20Hz–20kHz audio bandwidth with margin for stability |
Pinout & Package
TS482IST is housed in an 8-pin MiniSO-8 package (3.0mm × 3.0mm, 0.65mm pitch), thermally enhanced for portable audio applications with exposed pad (EP) connected to GND.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN− (1) | Inverting input of Channel 1; connects to feedback network for gain setting |
| 2 | VIN+ (1) | Non-inverting input of Channel 1; accepts AC-coupled audio signal |
| 3 | GND | Analog ground reference; must be low-impedance connection to PCB ground plane |
| 4 | VCC | Positive supply rail (2–5.5V); requires local 220µF bulk + 1µF ceramic bypass |
| 5 | OUT (1) | Channel 1 output; drives left-channel headphone load via series DC-blocking capacitor |
| 6 | OUT (2) | Channel 2 output; drives right-channel headphone load with matched output impedance |
| 7 | VIN+ (2) | Non-inverting input of Channel 2; isolated from Channel 1 for stereo integrity |
| 8 | VIN− (2) | Inverting input of Channel 2; independently configured for channel-specific gain |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables maximum voltage swing (e.g., 0.3V to 4.7V @ 5V) for highest possible output power into low-Z headphones |
| Click/pop suppression | Integrated switching control eliminates audible transients during power-up/down-no external mute circuit needed |
| Unity-gain stable | Operates reliably with gain = 1 using only external resistors; no compensation capacitor required |
| High PSRR (85dB) | Reduces sensitivity to noisy shared power rails-critical in mixed-signal SoC designs |
| Low quiescent current | 7.2mA typical @ 25°C enables >10-hour battery life in always-on portable audio subsystems |
Applications
| Stereo Headphone Amplifier | Computer Motherboard Audio |
|---|---|
Use Scenario: Driving 16–32Ω stereo headphones from a portable media player powered by a single 3.7V Li-ion cell. IC Role / Device Role: Dual-channel Class-AB audio power amplifier providing low-noise, low-distortion output with integrated click suppression. Use Value: Delivers 100mW/channel at 5V and 38mW at 3.3V-enough for high-sensitivity earbuds without external boost converters. |
Use Scenario: Integrated line-out/headphone driver on desktop/laptop motherboard with shared 3.3V analog rail. IC Role / Device Role: Low-EMI stereo buffer amplifier isolating codec DAC outputs from variable headphone loads. Use Value: 100dB crosstalk and 85dB PSRR prevent digital noise coupling and left/right channel interference in multi-layer PCB layouts. |
| Optical Storage Player | Sound Card |
Use Scenario: Audio output stage in DVD/Blu-ray players where compact size and thermal efficiency are constrained by plastic chassis. IC Role / Device Role: Final-stage headphone amplifier with rail-to-rail swing to maximize dynamic range from fixed 5V supply. Use Value: MiniSO-8 footprint and 190°C/W θJ-A allow silent operation without heatsinking in enclosed consumer enclosures. |
Use Scenario: High-fidelity PC sound card requiring low-THD, wide-bandwidth analog output for studio monitoring. IC Role / Device Role: Precision dual op-amp configured for unity-gain buffering with 110dB(A) SNR and 0.02% THD+N. Use Value: Meets professional audio SNR and distortion specs without costly discrete solutions or external regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stereo headphone amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4410ETE+ | Higher 125mW output @ 5V/16Ω but requires 2.7V min supply; 0.0005% THD+N lower; uses 12-pin TQFN | Better suited for performance-critical portable audio with tighter THD budgets; larger footprint | Select when <0.001% THD+N is mandatory and board area permits 3×3mm TQFN |
| TAS5707PAP | Digital-input Class-D amplifier; 2.5W output; requires I²S interface and external LC filter; higher efficiency | Targeted at battery-powered speakers-not headphone loads; incompatible signal chain (digital vs. analog input) | Choose only for new designs accepting digital audio interface and willing to add filtering components |
Compared with MAX4410ETE+, TS482IST offers wider supply range (2V vs. 2.7V) and smaller MiniSO-8 footprint but trades 25mW output and 0.0005% THD+N. Versus TAS5707PAP, it provides direct analog compatibility and zero external filtering-critical for cost-sensitive, space-limited headphone implementations.
Availability
TS482IST is available at Aetrix Electronics and suitable for stereo headphone amplification, computer motherboard audio subsystems, optical storage player front-ends, and PC sound cards requiring stable component supply across industrial temperature ranges (−40°C to +85°C).
Supply support for TS482IST 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 technologies for automotive, industrial, and consumer markets.
The TS482 belongs to ST's audio power amplifier product line, engineered specifically for low-voltage, low-noise stereo headphone drive in portable and embedded systems where size, efficiency, and acoustic fidelity are jointly constrained.
FAQ
What is the minimum supply voltage for reliable operation of TS482IST?
The TS482IST is fully specified down to 2V supply voltage, delivering 11.5mW per channel into 16Ω at 2V with 0.02% THD+N. Operation below 2V is not guaranteed-absolute maximum rating allows 1.8V transient but functional performance degrades rapidly below 2V due to reduced output swing and increased crossover distortion.
Does TS482IST require external compensation components?
No-TS482IST is unity-gain stable and does not require external compensation capacitors. Its internal frequency compensation ensures stability with gains ≥ 1 when using standard external gain-setting resistors (e.g., 3.9kΩ Rin/Rfeed). Stability is verified across all load conditions (16Ω–32Ω) and supply voltages (2V–5.5V).
How is click/pop noise suppressed in TS482IST?
TS482IST integrates dedicated internal circuitry that controls bias sequencing and output stage ramping during enable/disable transitions. This eliminates turn-on/turn-off transients without requiring external mute switches or software-controlled GPIO delays-verified to reduce audible clicks to inaudible levels per IEC 60268-7.
Can TS482IST drive 32Ω headphones effectively at 3.3V?
Yes-TS482IST delivers 38mW per channel into 32Ω at 3.3V (1% THD+N), sufficient for most consumer headphones (typically 90–110dB/mW sensitivity). Output swing remains rail-to-rail (0.3V–3.0V), preserving dynamic range; SNR stays at 107dB(A), ensuring clean playback even at low volumes.
TS482IST 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:
- Active
- 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-MiniSO
TS482IST FAQ
1.How can I place an order for TS482IST through Aetrix?
Please submit a Request for Quotation (RFQ) for TS482IST 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 TS482IST reliable?
The price and inventory of TS482IST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS482IST is usually 5 days.
3.What payment methods are accepted for TS482IST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS482IST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS482IST?
TS482IST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS482IST 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 TS482IST?
For technical support, including TS482IST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS482IST requirements.
6.How does Aetrix verify that TS482IST is sourced from the original manufacturer or authorized distributors?
All TS482IST 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 TS482IST meets industry standards.
7.What is the process for return or replacement of TS482IST?
All TS482IST units undergo pre-shipment inspection (PSI). If there is an issue with TS482IST, 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 TS482IST part is unused and in its original packaging.
Return procedure for TS482IST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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