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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

STMicroelectronics TS924IYPT

Name: TS924IYPT
Brand: STMicroelectronics
SKU: TS924IYPT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS924IYPT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-TSSOP (0.173", 4.40mm Width)

Datasheet:: TS924IYPT.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14TSSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TS924IYPT from STMicroelectronics is a rail-to-rail input/output quad BiCMOS operational amplifier optimized for 3 V and 5 V battery-powered audio systems. It delivers 80 mA output current, 4 MHz gain-bandwidth product, 1.3 V/µs slew rate, 9 nV/√Hz input voltage noise, and operates from 2.7 V to 12 V supply. Used in headphone amplifiers and piezoelectric speaker drivers where low-noise, high-output-current performance is critical.

For engineers reviewing the TS924IYPT datasheet, TS924IYPT pinout, TS924IYPT application, or TS924IYPT equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation insights, and confirmed alternative parts with functional distinctions for audio and portable signal conditioning circuits.

Technical Context

The TS924IYPT employs a BiCMOS input stage enabling rail-to-rail common-mode input range (V_CC− − 0.2 V to V_CC+ + 0.2 V) and rail-to-rail output swing within 100 mV of each rail at 32 Ω load. Its 80 mA short-circuit output current supports direct drive of low-impedance loads including 32 Ω headphones and piezo elements without external buffers.

It achieves 0.005% THD+N at 1 kHz with 2 V_pk-pk output into 600 Ω, 120 dB channel separation, and stable operation with capacitive loads up to 500 pF - making it suitable for multi-channel line drivers and buffered analog signal paths in MPEG boards and sound cards.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.7 V to 12 V - enables single-supply operation in portable 3 V and 5 V systems without level-shifting circuitry.
Output Current	80 mA - drives 32 Ω loads directly, eliminating need for external power stages in headphone and piezo driver applications.
Gain-Bandwidth Product	4 MHz - supports audio bandwidth extension beyond 20 kHz with adequate phase margin (68°) at unity gain.
Slew Rate	1.3 V/µs - ensures low distortion reproduction of fast transients in audio signals up to ~200 kHz full-power bandwidth.
Input Voltage Noise	9 nV/√Hz at 1 kHz - preserves signal integrity in low-level preamplifier and instrumentation front-end stages.
Input Offset Voltage (TS924A)	≤ 900 µV max - minimizes DC error in precision DC-coupled gain blocks and sensor signal conditioning paths.
Common-Mode Rejection	≥ 56 dB over full temperature range - maintains accuracy in noisy mixed-signal environments like cordless telephones.

Pinout & Package

TSSOP14 (Thin Shrink Small Outline Package), 14-pin, lead-free, automotive-grade package per AEC-Q100 qualification. Body dimensions: 5.0 mm × 6.4 mm × 1.05 mm (max height), pitch = 0.65 mm.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting Input (Op-Amp 1)	Differential input node for first amplifier; accepts rail-to-rail common-mode voltage.
2	Non-inverting Input (Op-Amp 1)	Reference input for first amplifier; matched bias current minimizes offset error.
3	Output (Op-Amp 1)	Capable of sourcing/sinking 80 mA; rail-to-rail swing supports full dynamic range in single-supply audio.
4	V_CC+	Positive supply rail; must be decoupled locally to maintain stability with capacitive loads up to 500 pF.
5	V_CC−	Negative supply rail (GND in single-supply); low-impedance return path essential for THD performance.
6	Inverting Input (Op-Amp 2)	Second amplifier differential input; electrically isolated but thermally coupled to other channels.
7	Non-inverting Input (Op-Amp 2)	Reference input for second amplifier; identical electrical characteristics to Pin 2.
8	Output (Op-Amp 2)	Independent output stage; shares same 80 mA capability and rail-to-rail behavior as Pin 3.
9	Inverting Input (Op-Amp 3)	Third amplifier input; layout symmetry ensures matched AC performance across all four channels.
10	Non-inverting Input (Op-Amp 3)	Reference input for third amplifier; no internal connection to other inputs - true quad independence.
11	Output (Op-Amp 3)	Third output; capable of driving 32 Ω loads while maintaining ≤ 0.005% THD+N at 1 kHz.
12	Inverting Input (Op-Amp 4)	Fourth amplifier input; validated for operation down to −40 °C and up to +125 °C ambient.
13	Non-inverting Input (Op-Amp 4)	Reference input for fourth amplifier; input bias current ≤ 100 nA ensures low leakage in high-Z sensor interfaces.
14	Output (Op-Amp 4)	Final output; exhibits 120 dB channel separation - critical for stereo and multi-channel buffer isolation.

Key Features

Feature	Design Value
Rail-to-rail input and output	Enables full utilization of supply voltage headroom in 3 V systems - e.g., 2.9 V output swing at 3 V supply with 10 kΩ load.
Low input voltage noise (9 nV/√Hz)	Preserves SNR in microphone preamps and piezo sensor interfaces where signal amplitudes are sub-millivolt.
High output current (80 mA)	Eliminates need for discrete output transistors in headphone drivers - reduces BOM count and PCB area.
Stability with 500 pF capacitive load	Permits direct connection to long traces, connectors, or LCD panel lines without external compensation.
120 dB channel separation	Prevents crosstalk between stereo channels or adjacent signal paths in multimedia systems and sound cards.

Applications

Headphone Amplifier

Piezoelectric Speaker Driver

Use Scenario: Driving stereo 32 Ω dynamic headphones from a 3.3 V microcontroller DAC output in portable media players.

IC Role / Device Role / Timing Role: Quad op-amp configured as two independent non-inverting gain stages (Av = 2–4), each delivering > 50 mW into 32 Ω.

Use Value: Rail-to-rail output swing maximizes loudness; 80 mA drive capability avoids clipping at peak transients; low noise preserves audio fidelity.

Use Scenario: Driving high-impedance piezoelectric speakers in compact alarm systems or smart home devices powered by 5 V USB supplies.

IC Role / Device Role / Timing Role: Single op-amp per channel used in voltage follower or inverting amplifier configuration to boost DAC output voltage swing.

Use Value: High slew rate (1.3 V/µs) supports fast rise/fall times required for crisp audible tones; rail-to-rail output ensures full piezo actuation voltage range.

Sound Card Line Driver

MPEG Board Analog Buffer

Use Scenario: Buffering and level-shifting multi-channel analog audio outputs on PC sound cards before transmission to external amplifiers.

IC Role / Device Role / Timing Role: All four amplifiers used as unity-gain buffers with 10 kΩ output impedance matching and 120 dB inter-channel isolation.

Use Value: Channel separation ≥ 120 dB prevents left/right crosstalk; low THD (0.005%) maintains CD-quality signal integrity.

Use Scenario: Isolating and conditioning analog video sync signals and audio data streams on MPEG decoder boards operating at 3.3 V.

IC Role / Device Role / Timing Role: Op-amps deployed as active filters and DC-blocking buffers between SoC analog I/O and connector interfaces.

Use Value: Stable operation with 500 pF loads accommodates long PCB traces to edge connectors; wide supply range (2.7–12 V) simplifies power domain integration.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad rail-to-rail output operational amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TS924IDT	SO14 package, industrial temperature range (−40 °C to +125 °C), same electrical specs.	Larger footprint; less suitable for space-constrained portable designs but easier for prototyping and rework.	Select when board layout allows SO14 or when hand-soldering is required.
TS924AIYPT	TS924A version: lower max input offset voltage (900 µV vs. 1.8 mV), otherwise identical TSSOP14 automotive-grade construction.	Better DC accuracy for precision DC-coupled gain stages; same AC performance and drive strength.	Select when <1 mV offset is required - e.g., instrumentation front-ends or calibrated sensor interfaces.

Compared with TS924IDT, TS924IYPT offers 35% smaller PCB area and improved thermal resistance (R_thJA = 100 °C/W vs. 66 °C/W), while TS924AIYPT trades slightly higher cost for guaranteed sub-millivolt offset - making TS924IYPT optimal for size- and audio-fidelity–constrained portable applications.

Availability

TS924IYPT is available at Aetrix Electronics and suitable for headphone amplifiers, piezoelectric speaker drivers, and MPEG board analog buffering requiring stable component supply across automotive-grade lifecycle commitments.

Supply support for TS924IYPT 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, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The TS92x series is ST's dedicated rail-to-rail output op-amp family targeting low-voltage, high-output-current audio and portable signal conditioning applications - emphasizing noise, distortion, and drive capability over ultra-low power.

FAQ

What is the maximum capacitive load the TS924IYPT can drive stably?

The TS924IYPT is specified stable with capacitive loads up to 500 pF without external compensation. This is validated in the datasheet under "Electrical Characteristics" and confirmed in Figure 3 and Figure 5 (gain/phase vs. frequency). Stability holds across the full operating temperature range (−40 °C to +125 °C) and supply voltages (2.7 V to 12 V), provided proper PCB layout practices - including local 100 nF V_CC decoupling - are followed.

Does TS924IYPT support true single-supply operation with rail-to-rail input?

Yes. The TS924IYPT features rail-to-rail input common-mode range extending from V_CC− − 0.2 V to V_CC+ + 0.2 V. With V_CC− = 0 V (ground), this allows input signals from 0 V to V_CC+ + 0.2 V - fully compatible with single-supply 3 V or 5 V systems. Input stage uses BiCMOS architecture to achieve this without phase reversal or increased bias current near rails.

How does the 80 mA output current translate to practical load capability?

The 80 mA rating is the guaranteed minimum short-circuit output current (per amplifier) across temperature and supply voltage. At 3 V supply, it supports ≥ 2.63 V output swing into 32 Ω (≈ 70 mW), and at 5 V, ≥ 4.4 V into 32 Ω (≈ 190 mW). This enables direct drive of standard stereo headphones and piezo elements without external transistors - verified in Figures 1, 2, and 4 of the datasheet.

Is TS924IYPT qualified for automotive applications?

Yes. Per Table 8 in the datasheet, TS924IYPT is explicitly marked as "automotive grade" and qualified per AEC-Q100 and AEC-Q003 standards. It undergoes advanced screening per AEC-Q001/Q002, operates from −40 °C to +125 °C, and features enhanced ESD protection (3 kV HBM) - making it suitable for infotainment audio subsystems and body control modules where reliability under thermal stress is mandatory.

TS924IYPT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 14-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 4

Output Type:: Rail-to-Rail

Slew Rate:: 1.3V/µs

Gain Bandwidth Product:: 4 MHz

-3db Bandwidth:: -

Current - Input Bias:: 15 nA

Voltage - Input Offset:: 3 mV

Current - Supply:: 1mA

Current - Output / Channel:: 80 mA

Voltage - Supply Span (Min):: 2.7 V

Voltage - Supply Span (Max):: 12 V

Operating Temperature:: -40°C ~ 125°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 14-TSSOP

TS924IYPT FAQ

1.How can I place an order for TS924IYPT through Aetrix?

Please submit a Request for Quotation (RFQ) for TS924IYPT 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 TS924IYPT reliable?

The price and inventory of TS924IYPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS924IYPT is usually 5 days.

3.What payment methods are accepted for TS924IYPT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS924IYPT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS924IYPT?

TS924IYPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS924IYPT 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 TS924IYPT?

For technical support, including TS924IYPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS924IYPT requirements.

6.How does Aetrix verify that TS924IYPT is sourced from the original manufacturer or authorized distributors?

All TS924IYPT 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 TS924IYPT meets industry standards.

7.What is the process for return or replacement of TS924IYPT?

All TS924IYPT units undergo pre-shipment inspection (PSI). If there is an issue with TS924IYPT, 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 TS924IYPT part is unused and in its original packaging.

Return procedure for TS924IYPT:

1.Submit a request within 90 days.

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

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