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

STMicroelectronics TS4962IQT

Name: TS4962IQT
Brand: STMicroelectronics
SKU: TS4962IQT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS4962IQT

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: 8-UDFN Exposed Pad

Datasheet:: TS4962IQT.pdf

Description:: IC AMP CLASS D MONO 2.8W 8DFN

Quantity:: RFQ Add To RFQ list

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Inventory:6,915

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Product details

Overview

TS4962IQT from STMicroelectronics is a differential Class-D BTL mono audio power amplifier delivering up to 2.2 W into 4 Ω at 5 V with 1% THD+N, operating from 2.4 V to 5.5 V supply, featuring adjustable gain via external resistors and active-low standby mode for ultra-low 10 nA quiescent current - deployed in cellular phones and notebook PCs.

For engineers reviewing the TS4962IQT datasheet, TS4962IQT pinout, TS4962IQT application, or TS4962IQT equivalent, key selection criteria include output power vs. supply voltage (e.g., 0.7 W @ 3.0 V into 4 Ω), PWM base frequency (280 kHz typical), efficiency (88% typical), SNR (85 dB A-weighted), and DFN8 3 × 3 mm thermal performance (R_thja = 50 °C/W on 4-layer PCB).

Technical Context

The TS4962IQT implements a differential-input, bridge-tied-load (BTL) Class-D architecture with internal PWM generation at 280 kHz base frequency and integrated pop/click suppression enabling ≤5 ms wake-up time. Its common-mode feedback loop stabilizes input bias while supporting single-ended or dual-differential input configurations.

Gain is set externally via two matched resistors (R_in), yielding G = 300 kΩ / R_in (R_in in kΩ); standby control is active-low with 300 kΩ internal pull-up resistance and 10 nA typical shutdown current. PSRR is 63 dB at 217 Hz, and CMRR reaches 57 dB under rated conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	2.2 W into 4 Ω @ 5 V, 1% THD+N - sufficient for loudspeaker drive in space-constrained portable devices
Supply Voltage Range	2.4 V to 5.5 V - compatible with single-cell Li-ion (3.0–4.2 V) and USB-powered systems
Efficiency	88% typical @ 2 W into 4 Ω - reduces thermal load and extends battery life vs. Class-AB alternatives
Standby Current	10 nA typical - enables always-on audio subsystems without measurable battery drain
SNR	85 dB A-weighted @ 1.2 W into 8 Ω - ensures high-fidelity playback with low background noise
PWM Frequency	280 kHz typical - allows compact LC filter design (e.g., 15 µH + 2.2 µF) with minimal EMI
Wake-up Time	5 ms maximum - supports responsive audio activation in UI-driven applications

Pinout & Package

TS4962IQT is housed in a thermally enhanced DFN8 3 × 3 mm package with exposed pad (recommended to connect to ground). The 8-pin layout supports differential input, BTL output, and low-impedance power/ground routing for optimal EMI and thermal performance.

Pin/Terminal	Circuit Role	Design Meaning
1 (STBY)	Active-low standby control input	Drives device into 10 nA shutdown when pulled to GND; internal 300 kΩ pull-up ensures default ON state
2 (NC)	No internal connection	Must remain unconnected - no routing or soldering required
3 (IN+)	Differential positive input	Accepts balanced signal; paired with IN− to reject common-mode noise and enable gain tuning
4 (IN−)	Differential negative input	Completes differential pair; enables rejection of supply ripple and board-level interference
5 (OUT+)	BTL positive output	Drives one side of speaker load; swings rail-to-rail in antiphase with OUT− for doubled voltage swing
6 (VCC)	Power supply input	Accepts 2.4–5.5 V; requires local 100 nF ceramic bypass capacitor adjacent to pin
7 (GND)	Ground reference	Primary return path; exposed pad must be connected to this node for thermal and EMI integrity
8 (OUT−)	BTL negative output	Drives opposite speaker terminal; phase-inverted relative to OUT+ to deliver full BTL power

Key Features

Feature	Design Value
Differential BTL Output Architecture	Delivers 2× voltage swing across load vs. single-ended, enabling 2.2 W into 4 Ω without output coupling capacitors
Adjustable Gain via External Resistors	Gain = 300 kΩ / R_in (R_in in kΩ) - permits precise system-level gain matching without trimming ICs
Ultra-Low Standby Current	10 nA typical - eliminates need for external power gating in battery-critical designs
Integrated Pop/Click Suppression	Enables <5 ms startup with no audible transients - critical for user-facing audio in mobile UIs
High PSRR (63 dB @ 217 Hz)	Rejects GSM burst noise and switching regulator ripple without additional supply filtering

Applications

Cellular Phone Audio

Notebook PC Speaker Drive

Use Scenario: Driving mono loudspeaker in slim smartphone chassis with single-cell Li-ion battery (3.0–4.2 V).

IC Role / Device Role / Timing Role: Class-D BTL amplifier providing high-efficiency audio output with differential input noise immunity and fast wake-up for call ringtones.

Use Value: Delivers 1.5 W into 4 Ω @ 4.2 V with 1% THD+N and 88% efficiency, minimizing heat buildup in sealed enclosures.

Use Scenario: Powering bottom-firing speaker in ultrabook with USB-C PD input and 5 V rail.

IC Role / Device Role / Timing Role: Filter-free mono amplifier accepting line-level differential input from codec, enabling compact PCB layout.

Use Value: Eliminates bulky output capacitors and LC filters while maintaining THD+N < 0.4% at 1 W into 8 Ω.

PDA Media Playback

Portable Bluetooth Speaker Base

Use Scenario: Audio output stage in legacy PDA with 3.3 V logic supply and space-limited board area.

IC Role / Device Role / Timing Role: Low-voltage Class-D driver supporting 0.7 W into 4 Ω @ 3.0 V with 1% THD+N and 5 ms turn-on.

Use Value: Enables audible media playback at battery voltages as low as 2.4 V, extending usable runtime.

Use Scenario: Mono channel amplifier in cost-sensitive Bluetooth speaker using 4 Ω full-range driver.

IC Role / Device Role / Timing Role: High-SNR (85 dB) BTL output stage with adjustable gain to match varying DAC output levels.

Use Value: Achieves >85 dB SNR and <2% THD+N across 20 Hz–20 kHz, meeting consumer audio fidelity requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Class-D mono audio amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TAS5342AIDAPR	Higher output (5 W into 4 Ω), but requires external LC filter and operates from 8–24 V - not pin-compatible	Suitable for higher-power portable speakers; incompatible with sub-3.6 V battery operation	Select only if ≥4 W output and wider supply range are required; adds filter complexity and board area
MAX9718ETA+	Fixed 12 dB gain, 1.4 W into 4 Ω @ 5 V, 85% efficiency, same DFN8 package but different pinout (no NC pin)	Lacks adjustable gain and differential input - limited noise immunity in noisy digital environments	Choose when gain stability and simplicity outweigh need for noise rejection and flexible gain scaling

Compared with TAS5342AIDAPR and MAX9718ETA+, TS4962IQT uniquely combines filter-free operation, differential input, gain adjustability, and sub-3 V capability - making it optimal for compact, battery-powered audio endpoints where noise immunity and supply flexibility are critical.

Availability

TS4962IQT is available at Aetrix Electronics and suitable for cellular phones, notebook PCs, and PDAs requiring stable component supply, long-term manufacturability, and consistent parametric performance across production lots.

Supply support for TS4962IQT 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 solutions for automotive, industrial, and consumer markets.

The TS4962 belongs to ST's Class-D audio amplifier product line, engineered specifically for space- and power-constrained portable electronics requiring high-efficiency, low-noise, and filter-free mono audio output.

FAQ

What is the minimum recommended supply voltage for reliable operation of TS4962IQT?

The TS4962IQT operates reliably down to 2.4 V, with full specifications guaranteed at that voltage. Below 2.4 V, functionality is not assured; at 2.4–2.5 V, the operating temperature range is restricted to 0°C to +70°C per datasheet Table 3. Output power drops to 0.42 W into 4 Ω at 2.4 V with 1% THD+N.

Can TS4962IQT drive an 8 Ω speaker without an external LC filter?

Yes - TS4962IQT is specified as "filter-free" and can directly drive 8 Ω loads. At 5 V, it delivers 1.4 W into 8 Ω with 1% THD+N. For EMI compliance in radiated emission tests, ST recommends adding a small ferrite bead or RC snubber at the outputs, but no full LC filter is required for basic operation.

How is gain configured, and what resistor values yield 6 dB and 12 dB gain?

Gain is set by external resistor R_in per G = 300 kΩ / R_in (R_in in kΩ). For 6 dB (G = 2), use R_in = 150 kΩ; for 12 dB (G = 4), use R_in = 75 kΩ. Both resistors must be matched to ±1% to maintain common-mode rejection and minimize offset.

Is the exposed thermal pad on the DFN8 package electrically connected internally?

No - the exposed pad is not internally connected to any die node. ST recommends soldering it to the PCB ground plane to improve thermal dissipation (reducing R_thja from 120 °C/W to 50 °C/W) and enhance EMI shielding. It may be left floating only if thermal performance is not critical.

TS4962IQT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-UDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Class D

Output Type:: 1-Channel (Mono)

Max Output Power x Channels @ Load:: 2.8W x 1 @ 4Ohm

Voltage - Supply:: 2.4V ~ 5.5V

Features:: Depop, Differential Inputs, Standby, Thermal Protection

Mounting Type:: Surface Mount

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

Grade:: -

Qualification:: -

Supplier Device Package:: 8-DFN (3x3)

TS4962IQT FAQ

1.How can I place an order for TS4962IQT through Aetrix?

Please submit a Request for Quotation (RFQ) for TS4962IQT 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 TS4962IQT reliable?

The price and inventory of TS4962IQT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS4962IQT is usually 5 days.

3.What payment methods are accepted for TS4962IQT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS4962IQT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS4962IQT?

TS4962IQT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS4962IQT 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 TS4962IQT?

For technical support, including TS4962IQT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS4962IQT requirements.

6.How does Aetrix verify that TS4962IQT is sourced from the original manufacturer or authorized distributors?

All TS4962IQT 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 TS4962IQT meets industry standards.

7.What is the process for return or replacement of TS4962IQT?

All TS4962IQT units undergo pre-shipment inspection (PSI). If there is an issue with TS4962IQT, 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 TS4962IQT part is unused and in its original packaging.

Return procedure for TS4962IQT:

1.Submit a request within 90 days.

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

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