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

STMicroelectronics TS924ID

Name: TS924ID
Brand: STMicroelectronics
SKU: TS924ID
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS924ID

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: TS924ID.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TS924ID 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 (driving 32 Ω loads), 4 MHz gain bandwidth, 1.3 V/µs slew rate, 9 nV/√Hz input noise, and operates from 2.7 V to 12 V supply.

For engineers reviewing the TS924ID datasheet, TS924ID pinout, TS924ID application, or TS924ID equivalent, this device is selected for low-noise, high-output-current audio buffering in space-constrained, low-voltage embedded designs requiring stable rail-to-rail swing and capacitive load drive up to 500 pF.

Technical Context

The TS924ID implements a BiCMOS input stage with 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 rails at 32 Ω). Its 4 MHz unity-gain bandwidth and 68° phase margin ensure stability with 100 pF capacitive loads.

It features low distortion (0.005% THD at 1 kHz, 2 V_pk-pk, R_L = 600 Ω), high channel separation (120 dB), and 80 mA short-circuit output current per amplifier-enabling direct drive of piezoelectric speakers and headphone loads without external buffers.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.7 V to 12 V - supports single-supply battery operation down to 3 V nominal and extended industrial range.
Output Current	80 mA per op-amp - enables direct 32 Ω load driving (e.g., headphones, piezo elements) without external boost stages.
Gain Bandwidth Product	4 MHz - sufficient for audio bandwidth extension and fast transient response in line drivers and MPEG board buffers.
Input Noise Density	9 nV/√Hz at 1 kHz - critical for low-noise instrumentation and high-fidelity audio pre-amplification stages.
Slew Rate	1.3 V/µs - ensures minimal distortion on 20 kHz full-scale audio signals (required ≥ 0.5 V/µs for 2 V_pk @ 20 kHz).
Input Offset Voltage (TS924A)	≤ 900 µV max over −40 °C to +125 °C - reduces DC error in precision sensor interfaces and active filters.
Capacitive Load Drive	Stable up to 500 pF - allows direct connection to long PCB traces, cables, or ADC input capacitance without compensation.

Pinout & Package

TS924ID is supplied in SO14 (plastic micropackage), a 14-pin small-outline integrated circuit with 1.27 mm pitch, 8.75 mm × 4.0 mm body, and 1.75 mm height. It complies with ECOPACK® environmental standards.

Pin	Circuit Role	Design Meaning
1	Inverting input (Op-Amp 1)	High-impedance differential input node; accepts rail-to-rail common-mode voltage (V_CC− − 0.2 V to V_CC+ + 0.2 V).
2	Non-inverting input (Op-Amp 1)	Matches Pin 1 in bias current (≤100 nA) and offset voltage tracking; used for unity-gain buffer or non-inverting gain stages.
3	Output (Op-Amp 1)	Class-AB output stage delivering ±80 mA; rail-to-rail swing within 100 mV of supplies at 32 Ω load.
4	V_CC+ (Positive Supply)	Main power rail; decoupling capacitor (≥100 nF) required adjacent to pin for high-frequency PSRR stability.
5	V_CC− (Negative Supply / Ground)	Return path for all four amplifiers; must be low-impedance; shared ground plane critical for channel separation (120 dB).
6	Inverting input (Op-Amp 2)	Independent input stage identical to Pin 1; no crosstalk coupling beyond specified 120 dB channel separation.
7	Non-inverting input (Op-Amp 2)	Matches Pin 6; enables dual-channel instrumentation configurations (e.g., differential input pairs).
8	Output (Op-Amp 2)	Electrically isolated output; capable of independent 32 Ω load drive concurrent with other channels.
9	Inverting input (Op-Amp 3)	Third amplifier input; layout symmetry recommended to minimize thermal gradient-induced offset drift.
10	Non-inverting input (Op-Amp 3)	Supports multi-stage filtering or cascaded gain blocks without inter-stage level-shifting.
11	Output (Op-Amp 3)	Delivers same AC performance (4 MHz GBW, 1.3 V/µs) as Pins 3 and 8; validated for 500 pF capacitive loading.
12	Inverting input (Op-Amp 4)	Fourth channel input; usable for feedback monitoring or active termination in line driver applications.
13	Non-inverting input (Op-Amp 4)	Enables quad-channel simultaneous signal conditioning (e.g., 4-channel audio codec analog front-end).
14	Output (Op-Amp 4)	Full rail-to-rail output capability; tested for latch-up immunity and ESD robustness (3 kV HBM).

Key Features

Feature	Design Value
Rail-to-rail I/O	Input common-mode range extends 0.2 V beyond both rails; output swings within 100 mV of V_CC+ and V_CC− at 32 Ω - maximizes dynamic range in 3 V systems.
80 mA Output Current	Each amplifier drives 32 Ω loads directly (e.g., stereo headphones), eliminating need for discrete output transistors or dedicated headphone amps.
Low 9 nV/√Hz Input Noise	Enables high-gain microphone preamps and sensor signal chains where noise floor dominates SNR - verified at 1 kHz.
4 MHz Gain Bandwidth	Supports closed-loop gains up to 20× at 200 kHz, suitable for anti-aliasing filters, active crossover networks, and MPEG board timing buffers.
Stability with 500 pF Loads	No external compensation required when driving ADC inputs, long cables, or LCD bias networks - simplifies layout and BOM.
3 kV HBM ESD Protection	Robust handling during PCB assembly and field operation; eliminates need for external TVS diodes in portable equipment interfaces.

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 unity-gain buffers (Channels 1&2) and two active low-pass filters (Channels 3&4) for left/right channel signal conditioning.

Use Value: 80 mA per channel delivers >100 mW into 32 Ω without clipping; rail-to-rail swing preserves full DAC voltage range; 9 nV/√Hz noise ensures >105 dB SNR.

Use Scenario: Driving high-impedance piezoelectric buzzers in industrial alarm panels powered by 5 V supply.

IC Role / Device Role / Timing Role: Single-channel configured as non-inverting amplifier (gain = 5) with fast slew rate to reproduce sharp 2–4 kHz alert tones.

Use Value: 1.3 V/µs slew rate supports clean 4 kHz square-wave generation; 4 MHz GBW ensures flat frequency response; 80 mA peak current handles piezo capacitive reactance.

Sound Card Line Driver

MPEG Board Audio Buffer

Use Scenario: Buffering and level-shifting analog audio outputs from PC sound cards to consumer-grade RCA inputs (10 kΩ load, 2 V_rms).

IC Role / Device Role / Timing Role: Quad configured as four independent line drivers (gain = 2) with DC-blocking caps and output series resistors for impedance matching.

Use Value: 120 dB channel separation prevents crosstalk between L/R/center/sub channels; 0.005% THD preserves audio fidelity; rail-to-rail output ensures full 2 V_rms swing at 3.3 V supply.

Use Scenario: Signal conditioning for analog audio decode paths on MPEG-2/4 multimedia boards operating from 3.3 V logic rails.

IC Role / Device Role / Timing Role: Quad used for DAC output buffering, anti-aliasing filtering, headphone amp, and microphone preamp in single-chip audio subsystem.

Use Value: Single 3.3 V supply simplifies power design; 4 MHz GBW supports 20 kHz filter cutoffs; low 1.5 mA/quiescent current extends battery life in portable MPEG players.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad rail-to-rail op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TS924IPT	TSSOP14 package (4.9 mm × 6.4 mm); 100 °C/W thermal resistance vs. SO14's 66 °C/W.	Better suited for high-density PCBs with tight layout constraints; lower thermal mass requires careful power derating above 60 °C ambient.	Select for space-constrained consumer electronics; verify thermal rise under 80 mA continuous load per channel.
TS922ID	Dual-channel version in SO8; identical electrical specs but half the channel count and 50% lower quiescent current (0.75 mA/op-amp).	Used where only two amplifiers are needed (e.g., stereo line-out only), reducing cost and board area versus quad implementation.	Choose when system requires exactly two channels and board space or power budget is constrained; not a drop-in replacement for quad functions.

Compared with TS924IPT, TS924ID offers superior thermal performance in SO14 for sustained 80 mA loads; compared with TS922ID, it provides two additional independent amplifiers essential for 4-channel audio or multi-sensor signal chains - making TS924ID optimal for full-featured portable audio subsystems.

Availability

TS924ID is available at Aetrix Electronics and suitable for headphone amplifiers, piezoelectric speaker drivers, and MPEG board audio buffers requiring stable component supply across industrial temperature ranges (−40 °C to +125 °C).

Supply support for TS924ID 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 MEMS products for industrial, automotive, and consumer markets.

The TS92x series is ST's dedicated rail-to-rail BiCMOS op-amp family targeting low-voltage, low-noise, high-output-current audio and portable instrumentation applications - emphasizing battery efficiency and signal integrity.

FAQ

What is the maximum capacitive load the TS924ID can drive while remaining stable?

The TS924ID is characterized for stability with capacitive loads up to 500 pF without external compensation. This is validated across the full operating temperature range (−40 °C to +125 °C) and supply voltages (2.7 V to 12 V), enabling direct interface to ADC inputs, long cables, and LCD bias networks without added RC networks or isolation resistors.

Does TS924ID support true single-supply operation with input signals extending to the negative rail?

Yes - the TS924ID features rail-to-rail input stage allowing common-mode voltage from V_CC− − 0.2 V to V_CC+ + 0.2 V. With V_CC− tied to ground, inputs accept signals down to −0.2 V, enabling accurate amplification of near-ground signals (e.g., current-sense shunt voltages) without level-shifting circuitry.

How does the TS924A variant differ from TS924 in input offset voltage specification?

The TS924A guarantees a maximum input offset voltage of 900 µV over the full temperature range (−40 °C to +125 °C), whereas the standard TS924 specifies 1.8 mV max. This tighter offset spec makes TS924A preferred for precision DC-coupled applications like active filters and sensor front-ends where output DC error must remain below 1 mV.

Can TS924ID safely drive a 16 Ω load, and what derating applies?

While rated for 32 Ω loads at 80 mA, the TS924ID can drive 16 Ω loads with appropriate thermal management. At 16 Ω, peak current demand rises to ~160 mA per channel - exceeding absolute maximum rating. Therefore, use requires pulse operation (duty cycle < 20%), forced airflow, or parallel channel sharing; continuous DC drive is not recommended.

TS924ID Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

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-SO

TS924ID FAQ

1.How can I place an order for TS924ID through Aetrix?

Please submit a Request for Quotation (RFQ) for TS924ID 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 TS924ID reliable?

The price and inventory of TS924ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS924ID is usually 5 days.

3.What payment methods are accepted for TS924ID?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS924ID transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS924ID?

TS924ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS924ID 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 TS924ID?

For technical support, including TS924ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS924ID requirements.

6.How does Aetrix verify that TS924ID is sourced from the original manufacturer or authorized distributors?

All TS924ID 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 TS924ID meets industry standards.

7.What is the process for return or replacement of TS924ID?

All TS924ID units undergo pre-shipment inspection (PSI). If there is an issue with TS924ID, 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 TS924ID part is unused and in its original packaging.

Return procedure for TS924ID:

1.Submit a request within 90 days.

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

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