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STMicroelectronics TS482IDT
- Part No.:
- TS482IDT
- Manufacturer:
- STMicroelectronics
- Category:
- Audio Amplifiers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS482IDT.pdf
- Description:
- IC AMP CLASS AB STEREO 107MW 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:11,600
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Product details
Overview
TS482IDT from STMicroelectronics is a dual-channel, rail-to-rail input/output stereo headphone amplifier delivering up to 100mW per channel into 16Ω at 5V supply, with 0.1% THD+N, 110dB(A) SNR, and 85dB PSRR. It operates from 2V to 5.5V and integrates click-reduction circuitry for clean power-on/off transitions in portable audio systems.
For engineers reviewing the TS482IDT datasheet, TS482IDT pinout, TS482IDT application, or TS482IDT equivalent, this device is selected for low-voltage, high-fidelity stereo output stages requiring stable gain configuration, high crosstalk rejection (100dB), and unity-gain stability with external resistors.
Technical Context
The TS482IDT implements two independent, fully differential-capable op-amp channels optimized for capacitive-coupled headphone loads. Its rail-to-rail input stage accepts common-mode voltages from GND to VCC, while the output stage drives 16–32Ω loads with symmetrical swing (e.g., 0.4–4.6V at 5V supply, RL=16Ω).
Gain is externally set via resistor networks (Rin/Rfeed), supporting inverting configurations with Av = –Rfeed/Rin; it remains unity-gain stable without compensation. The internal biasing network (Rpol) establishes VCC/2 DC reference for AC-coupled inputs and outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Power | 100mW per channel into 16Ω @ 5V, 0.1% THD+N - sufficient for loud, distortion-free playback on standard headphones |
| Supply Voltage Range | 2V to 5.5V - enables direct integration with single-cell Li-ion (3.0–4.2V) or dual-cell alkaline (2.4–3.2V) power rails |
| PSRR | 85dB @ 100Hz, 5V - suppresses ripple from noisy DC-DC converters in compact portable designs |
| SNR | 110dB(A) @ 5V - ensures ultra-low noise floor for high-resolution audio playback |
| Crosstalk | 100dB @ 1kHz, RL=32Ω - preserves stereo imaging integrity in shared-ground headphone outputs |
| THD+N | 0.03% typical @ 1kHz, 90mW into 16Ω - meets Hi-Fi-grade linearity requirements |
| Slew Rate | 0.7 V/µs @ RL=16Ω - supports full-swing 20kHz signals without slew-induced distortion |
Pinout & Package
TS482IDT is housed in an SO-8 package (8-pin small outline integrated circuit) with exposed pad for thermal enhancement. Pin numbering follows standard SO-8 convention (pin 1 marked by notch or dot).
| Pin/Terminal | 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 left audio signal |
| 3 | GND | Analog ground reference - must be low-impedance, star-connected to bypass capacitors |
| 4 | VCC | Positive supply rail - requires ≥220µF bulk + 1µF ceramic bypass near pin |
| 5 | OUT (1) | Channel 1 output - drives left headphone load via series coupling capacitor |
| 6 | OUT (2) | Channel 2 output - drives right headphone load via series coupling capacitor |
| 7 | VIN+ (2) | Non-inverting input of Channel 2 - accepts AC-coupled right audio signal |
| 8 | VIN− (2) | Inverting input of Channel 2 - connects to feedback network for gain setting |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization from 2V supply, maximizing headroom in battery-powered devices |
| Click reduction | Internal circuitry minimizes turn-on/turn-off transients - eliminates audible pop in headset applications |
| Unity-gain stable | Operates reliably with Av = 1 using only external resistors - no compensation capacitor required |
| High PSRR & SNR | 85dB PSRR and 110dB(A) SNR jointly ensure clean audio under noisy power conditions |
| Low-voltage operation | Delivers 11.5mW/channel into 16Ω at 2V - supports ultra-low-power standby and wake-up audio |
Applications
| Stereo Headphone Amplifier | Computer Motherboard Audio |
|---|---|
|
Use Scenario: Driving 16–32Ω stereo headphones from a portable media player's DAC output. IC Role / Device Role / Timing Role: Final analog output stage providing voltage gain, current drive, and DC blocking. Use Value: 100mW/channel output ensures adequate volume on high-impedance earbuds without external boost stages. |
Use Scenario: Integrated audio subsystem on desktop/laptop motherboard delivering line-out and headphone-out signals. IC Role / Device Role / Timing Role: Dual-channel buffer/amplifier isolating codec outputs from variable headphone loads. Use Value: 100dB crosstalk rejection preserves stereo separation when both channels share ground and supply rails. |
| Optical Storage Player | Set-Top Box Audio Output |
|
Use Scenario: Audio playback path in DVD/Blu-ray players where space and thermal budget constrain discrete solutions. IC Role / Device Role / Timing Role: Low-noise, low-distortion headphone driver with integrated biasing and click suppression. Use Value: Rail-to-rail I/O allows full 2V–5.5V supply flexibility, matching diverse system power architectures. |
Use Scenario: Consumer AV equipment requiring simultaneous line-level and headphone outputs with minimal BOM count. IC Role / Device Role / Timing Role: Dual-output amplifier configured for fixed-gain headphone drive and attenuated line-out. Use Value: Unity-gain stability and external resistor control enable precise gain matching across output paths. |
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 quiescent current (12mA vs. 7.2mA typ.), 120mW output @ 5V/16Ω, but requires external charge pump for negative rail | Targeted at higher-output, higher-battery-voltage systems (e.g., 5V-only USB-powered docks) | Select when >100mW output or extended frequency response (>200kHz GBW) is required |
| TAS5707PAP | Digital-input Class-D amplifier with integrated DSP; not pin-compatible, requires I²S interface and firmware setup | Used in smart TV/audio systems needing multi-format decoding and parametric EQ | Select only for new designs embracing digital audio architecture - not a drop-in replacement |
Compared with MAX4410ETE+ and TAS5707PAP, the TS482IDT offers superior power efficiency at low supply voltages (2–3.3V), simpler analog interface, and guaranteed click-free operation - making it optimal for cost-sensitive, battery-constrained portable audio endpoints.
Availability
TS482IDT is available at Aetrix Electronics and suitable for stereo headphone amplification, computer motherboard audio subsystems, optical storage player audio stages, and set-top box headphone outputs requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for TS482IDT 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 specializing in analog, power, and microcontroller technologies for automotive, industrial, and consumer markets.
The TS482 belongs to ST's audio power amplifier product line, designed specifically for low-voltage, high-fidelity headphone drive in space-constrained portable and embedded systems.
FAQ
What is the minimum recommended load impedance for TS482IDT?
The TS482IDT is characterized and specified for loads ≥16Ω. Driving lower impedances (e.g., 8Ω) risks exceeding maximum output current (120mA per channel at 5V) and may cause thermal shutdown or increased THD+N beyond datasheet limits. ST does not guarantee performance below 16Ω.
Can TS482IDT operate with a single 2.5V supply?
Yes - the TS482IDT is fully specified down to 2V supply and delivers 20.5mW per channel into 16Ω at 2.5V with 0.1% THD+N. Its rail-to-rail input/output architecture ensures usable headroom even at this voltage, enabling compatibility with partially discharged Li-ion cells.
Is external DC biasing required for the inputs?
No - the TS482IDT includes internal biasing circuitry that sets VIN+ and VIN− reference points. However, AC-coupling capacitors (Cin) are mandatory at inputs to block external DC offsets; the internal Rpol network provides VCC/2 bias for the amplifier core.
Does TS482IDT support shutdown mode?
No - the TS482IDT has no dedicated enable/shutdown pin. Power-down is achieved by removing VCC. For active control, external MOSFET switching of VCC or use of a companion low-quiescent regulator with enable is recommended.
TS482IDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
TS482IDT FAQ
1.How can I place an order for TS482IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS482IDT 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 TS482IDT reliable?
The price and inventory of TS482IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS482IDT is usually 5 days.
3.What payment methods are accepted for TS482IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS482IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS482IDT?
TS482IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS482IDT 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 TS482IDT?
For technical support, including TS482IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS482IDT requirements.
6.How does Aetrix verify that TS482IDT is sourced from the original manufacturer or authorized distributors?
All TS482IDT 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 TS482IDT meets industry standards.
7.What is the process for return or replacement of TS482IDT?
All TS482IDT units undergo pre-shipment inspection (PSI). If there is an issue with TS482IDT, 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 TS482IDT part is unused and in its original packaging.
Return procedure for TS482IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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