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

STMicroelectronics TS4995EIJT

Name: TS4995EIJT
Brand: STMicroelectronics
SKU: TS4995EIJT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS4995EIJT

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: 9-UFBGA, FCBGA

Datasheet:: TS4995EIJT.pdf

Description:: IC AMP AB MONO 1.2W 9FLIPCHIP

Quantity:: RFQ Add To RFQ list

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Inventory:7,412

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Product details

Overview

TS4995EIJT from STMicroelectronics is a fully differential 1.2 W audio power amplifier IC designed for portable audio output stages. It delivers rail-to-rail 1.2 W RMS into 8 Ω at 5 V, features 6 dB fixed gain, 90 dB PSRR at 217 Hz, and ultra-low 10 nA standby current. Its differential inputs and common-mode feedback enable high noise immunity and stable V_CC/2 output biasing in mobile phone speaker drivers.

For engineers reviewing the TS4995EIJT datasheet, TS4995EIJT pinout, TS4995EIJT application, or TS4995EIJT equivalent, key selection criteria include differential input compatibility, 2.5–5.5 V single-supply operation, selectable active-high/active-low standby control, and flip-chip thermal performance in space-constrained handheld designs.

Technical Context

The TS4995EIJT implements a fully differential signal path with internal common-mode feedback that actively maintains output DC bias at V_CC/2 across varying input common-mode voltage (0–4.5 V), eliminating need for AC-coupling capacitors in many configurations. Its fixed +6 dB gain reduces external component count and stabilizes loop response.

It integrates thermal shutdown protection and supports dual standby polarity via the STDBY MODE pin. Startup time is 10 ms typical at 3.3 V, and PSRR reaches 90 dB at 217 Hz with grounded inputs-critical for GSM noise rejection in cellular handsets.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	1.2 W RMS @ 5 V, 8 Ω, THD+N = 1%, 1 kHz - sufficient to drive loudspeaker loads without external boost stage
Supply Voltage Range	2.5 V to 5.5 V - compatible with Li-ion battery discharge profile and USB-powered systems
PSRR	90 dB @ 217 Hz with grounded inputs - suppresses baseband switching noise in cellular RF environments
Standby Current	10 nA typical - enables multi-week battery standby in always-on audio subsystems
Gain	Fixed 6 dB - eliminates external gain-setting resistors and improves production consistency
THD+N	0.5% @ 850 mW, 20 Hz–20 kHz - meets fidelity requirements for voice and mid-fidelity music playback
SNR	100 dB A-weighted - ensures low audible noise floor in quiet listening conditions

Pinout & Package

TS4995EIJT uses a 9-bump flip-chip package (300 µm bump diameter) with bottom-side interconnects, optimized for low-inductance audio routing and thermal dissipation in thin mobile PCBs.

Pin/Terminal	Circuit Role	Design Meaning
VIN+	Differential input non-inverting	Accepts one half of balanced audio signal; enables noise rejection when paired with VIN−
VIN−	Differential input inverting	Completes differential pair; common-mode feedback maintains symmetry across process/voltage/temperature
VO+	Differential output non-inverting	Drives positive side of speaker load; rail-to-rail swing maximizes dynamic range
VO−	Differential output inverting	Drives negative side of speaker load; eliminates need for output coupling capacitor
VCC	Positive supply	Single 2.5–5.5 V rail powers amplifier core and bias circuitry
GND	Ground reference	Return path for supply and signal currents; requires low-impedance PCB plane
STDBY	Standby mode control	Active-low or active-high (configured by STDBY MODE pin); transitions amplifier to 10 nA quiescent state
BYPASS	Half-supply decoupling	Connects to 1 µF capacitor to stabilize internal V_CC/2 bias node for differential outputs
STDBY MODE	Standby polarity select	Configures STDBY pin as active-high (V_CC) or active-low (GND); sets logic threshold

Key Features

Feature	Design Value
Fully differential I/O architecture	Rejects common-mode noise on PCB traces and cables; eliminates DC-blocking capacitors in speaker path
Selectable standby polarity	STDBY MODE pin allows direct interface to either open-drain or push-pull system controllers without level-shifting
Ultra-fast wake-up	10 ms typical startup at 3.3 V enables responsive audio playback initiation after sleep
Thermal shutdown protection	Activates at 150 °C junction temperature; sustains short-circuit events without latch-up
Pop-and-click suppression	Internal sequencing minimizes transient artifacts during power-up/down; no external mute circuit required

Applications

Mobile Phone Speaker Driver

Tablet Audio Output Stage

Use Scenario: Driving mono or stereo loudspeakers in LTE/5G smartphones with tight EMI constraints and battery life targets.

IC Role / Device Role / Timing Role: Final-stage audio power amplifier delivering 1.2 W to 8 Ω loads; operates in differential mode to reject RF coupling from adjacent antennas.

Use Value: 90 dB PSRR at 217 Hz directly mitigates GSM burst noise; 10 nA standby extends standby time beyond 30 days on single charge.

Use Scenario: Audio output for Android/iOS tablets requiring compact, low-heat audio amplification without external gain components.

IC Role / Device Role / Timing Role: Fixed-gain differential amplifier interfacing directly to codec DAC outputs; bypasses need for external feedback network.

Use Value: 6 dB integrated gain and V_CC/2 common-mode feedback eliminate four external resistors and two coupling capacitors per channel.

Portable Bluetooth Speaker

Laptop Internal Speaker Amplifier

Use Scenario: Battery-powered Bluetooth speakers needing efficient Class-AB-like linearity with minimal BOM cost.

IC Role / Device Role / Timing Role: Primary power amplifier stage accepting differential I²S or analog line-level input; manages thermal load via flip-chip package.

Use Value: 1.2 W output at 5 V enables >85 dBA SPL from 40 mm drivers; thermal resistance of 100 °C/W allows passive heatsinking only.

Use Scenario: Integrated speaker amplification in ultrabooks where PCB area and EMI are constrained by Intel platform requirements.

IC Role / Device Role / Timing Role: Low-noise audio driver placed near hinge or keyboard zone; differential I/O rejects noise from high-speed data buses.

Use Value: 100 dB SNR and <0.5% THD+N meet Windows HD Audio fidelity thresholds; 2.5 V minimum supply supports deep-sleep states.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fully differential audio amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TAS5706RTAT	Class-D, 3 W output, I²S input, programmable gain; requires external LC filter	Higher efficiency (85%) but larger solution size; suited for longer battery life over fidelity	Select when >30% efficiency gain justifies added EMI filtering and layout complexity
MAX97220AETE+T	Class AB, 1.4 W, 6 dB fixed gain, same 9-bump WLP package; 120 dB PSRR, 1 µA standby	Superior PSRR and lower standby current; pinout incompatible due to different STDBY logic mapping	Prefer for ultra-low-noise GSM environments where board redesign accommodates pin reassignment

Compared with TAS5706RTAT and MAX97220AETE+T, TS4995EIJT offers optimal balance of analog simplicity, proven GSM noise immunity, and minimal external component count-making it ideal for cost-sensitive, space-constrained portable audio where Class-D EMI is prohibitive.

Availability

TS4995EIJT is available at Aetrix Electronics and suitable for mobile phone speaker drivers, tablet audio output stages, portable Bluetooth speaker designs, and laptop internal speaker amplifiers requiring stable component supply across long production lifecycles.

Supply support for TS4995EIJT 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 TS4995 belongs to ST's low-voltage audio amplifier product line, engineered specifically for high-fidelity, low-power portable audio applications where differential signaling, small footprint, and robust RF immunity are mandatory.

FAQ

What is the function of the STDBY MODE pin on TS4995EIJT?

The STDBY MODE pin configures the logic polarity of the STDBY pin: when pulled to V_CC, STDBY becomes active-high; when tied to GND, STDBY becomes active-low. This allows direct interfacing with diverse host controllers without external inverters or level shifters, simplifying system integration across multiple platform designs.

Can TS4995EIJT drive a 4 Ω speaker load?

Yes-TS4995EIJT supports 4 Ω loads with up to 1.8 W output at 5 V (1% THD+N, 1 kHz). Electrical characteristics tables confirm operation down to 4 Ω, and thermal derating curves show safe power dissipation with appropriate PCB copper area, making it suitable for higher-SPL portable speakers.

Is an input coupling capacitor required for TS4995EIJT?

No-its differential inputs and internal common-mode feedback allow direct DC-coupled connection from codecs or DACs with matched common-mode output (e.g., 1.25 V). Input coupling capacitors are optional and used only to block DC offsets exceeding ±0.3 V relative to GND or V_CC.

How does the BYPASS pin function in the TS4995EIJT?

The BYPASS pin connects to a 1 µF capacitor that stabilizes the internal V_CC/2 bias node used by the common-mode feedback loop. This capacitor ensures accurate differential output centering and prevents low-frequency oscillation or distortion when driving capacitive loads like speaker cables.

TS4995EIJT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 9-UFBGA, FCBGA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Class AB

Output Type:: 1-Channel (Mono)

Max Output Power x Channels @ Load:: 1.2W x 1 @ 8Ohm

Voltage - Supply:: 2.5V ~ 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:: 9-FlipChip

TS4995EIJT FAQ

1.How can I place an order for TS4995EIJT through Aetrix?

Please submit a Request for Quotation (RFQ) for TS4995EIJT 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 TS4995EIJT reliable?

The price and inventory of TS4995EIJT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS4995EIJT is usually 5 days.

3.What payment methods are accepted for TS4995EIJT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS4995EIJT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS4995EIJT?

TS4995EIJT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS4995EIJT 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 TS4995EIJT?

For technical support, including TS4995EIJT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS4995EIJT requirements.

6.How does Aetrix verify that TS4995EIJT is sourced from the original manufacturer or authorized distributors?

All TS4995EIJT 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 TS4995EIJT meets industry standards.

7.What is the process for return or replacement of TS4995EIJT?

All TS4995EIJT units undergo pre-shipment inspection (PSI). If there is an issue with TS4995EIJT, 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 TS4995EIJT part is unused and in its original packaging.

Return procedure for TS4995EIJT:

1.Submit a request within 90 days.

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

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