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

STMicroelectronics TS524ID

Name: TS524ID
Brand: STMicroelectronics
SKU: TS524ID
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS524ID

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: TS524ID.pdf

Description:: IC AUDIO 4 CIRCUIT 14SO

Quantity:: RFQ Add To RFQ list

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Inventory:3,569

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Product details

Overview

TS524ID from STMicroelectronics is a precision low-noise quad operational amplifier in SO14 package, designed for high-fidelity audio signal conditioning. It delivers 950 µV max input offset voltage, 4.5 nV/√Hz input voltage noise, 15 MHz gain bandwidth product, 7 V/µs slew rate, and 0.002% THD at 20 Hz–20 kHz - enabling clean amplification in preamp and line-driver stages of professional audio equipment.

For engineers reviewing the TS524ID datasheet, TS524ID pinout, TS524ID application, or TS524ID equivalent, key selection criteria include verified low-noise performance at audio frequencies, rail-swing capability (±13.2 V into 600 Ω), channel separation >120 dB, and ESD tolerance up to 2 kV - all confirmed under ±15 V supply and −40°C to +105°C operating range.

Technical Context

The TS524ID integrates four independent high-performance op-amp channels on a single die, each featuring matched bipolar input transistors for low offset drift (2 µV/°C) and symmetrical source/sink output current (29 mA/37 mA). Its macromodel supports accurate AC and transient simulation in SPICE-based tools.

It operates from ±2.5 V to ±15 V supplies, with common-mode input range extending to ±14 V and output swing reaching ±14.6 V into 10 kΩ. The 55° phase margin at unity gain ensures stable operation with capacitive loads up to 100 pF without external compensation.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Offset Voltage	0.95 mV typ., ≤1.8 mV max - enables DC-coupled audio paths without significant baseline shift
Input Voltage Noise	4.5 nV/√Hz at 1 kHz - preserves signal integrity in microphone preamps and phono stages
Gain Bandwidth Product	15 MHz - supports wideband audio processing up to 200 kHz full-power bandwidth
Slew Rate	7 V/µs - prevents slew-induced distortion on fast transients (e.g., drum hits, percussive peaks)
THD + Noise	0.002% at 3 Vrms, 20 Hz–20 kHz - meets high-end consumer and broadcast audio fidelity requirements
Channel Separation	120 dB - maintains stereo imaging integrity in multi-channel line drivers
CMRR / PSRR	80–100 dB - rejects power supply ripple and common-mode interference in noisy PCB environments

Pinout & Package

TS524ID is housed in a 14-pin plastic micropackage (SO14), compliant with JEDEC MS-012, with 1.27 mm pitch and gull-wing leads. Thermal resistance θ_JA is 125°C/W (SO14, 2-layer board).

Pin/Terminal	Circuit Role	Design Meaning
1, 5, 9, 12	Inverting Input (A/B/C/D)	Differential input node per channel; high-impedance (175 kΩ) bipolar input stage
2, 6, 10, 13	Non-inverting Input (A/B/C/D)	Reference input for each amplifier; supports rail-to-rail common-mode range (±14 V)
3, 7, 11, 14	Output (A/B/C/D)	Class-AB output stage delivering ±14.6 V swing into 10 kΩ and 37 mA sink capability
4	Positive Supply (V_CC+)	Accepts +2.5 V to +15 V; powers all four amplifiers simultaneously
8	Negative Supply (V_CC−)	Accepts −2.5 V to −15 V; referenced to ground for dual-supply operation

Key Features

Feature	Design Value
Low Input Offset Drift	2 µV/°C - minimizes thermal-induced DC error in temperature-varying audio racks
High Output Drive	±14.6 V swing into 10 kΩ, 37 mA sink - drives long cables and reactive loads without clipping
Integrated ESD Protection	2 kV HBM - protects against handling damage during PCB assembly and field service
Macromodel Included	SPICE-compatible subcircuit (TS524) - enables accurate AC, transient, and noise simulation pre-layout
Wide Supply Range	±2.5 V to ±15 V - supports both portable (low-voltage) and studio-grade (high-headroom) designs

Applications

Professional Audio Mixer Channel Strip

High-Resolution DAC Output Buffer

Use Scenario: Signal conditioning between analog summing bus and fader/pan circuitry in 24-channel analog mixing consoles.

IC Role / Device Role / Timing Role: Quad configuration allows one TS524ID per stereo pair (L/R) to handle inverting gain, non-inverting buffering, and differential summing without crosstalk.

Use Value: 120 dB channel separation and <0.002% THD preserve stereo image fidelity and dynamic range across full mix bus.

Use Scenario: Post-DAC analog filtering and current-to-voltage conversion in 32-bit audio playback systems.

IC Role / Device Role / Timing Role: Configured as active I/V converter and second-order low-pass filter with matched internal channels.

Use Value: 4.5 nV/√Hz input noise and 15 MHz GBW enable >120 dB SNR and flat response to 100 kHz.

Studio Microphone Preamp Stage

Line-Level Distribution Amplifier

Use Scenario: First-stage gain block in transformerless condenser mic preamps requiring ultra-low noise and high CMRR.

IC Role / Device Role / Timing Role: Single channel used in non-inverting configuration with 60 dB gain; remaining channels buffer auxiliary outputs.

Use Value: 950 µV max V_io and 2 µV/°C drift eliminate manual nulling; ±14 V swing handles 20 dBu peak signals.

Use Scenario: Fan-out of balanced line-level signals to multiple destinations (monitor, recorder, effects loop) in broadcast OB vans.

IC Role / Device Role / Timing Role: One TS524ID buffers four independent outputs from a single AES3 or analog source.

Use Value: Symmetrical ±37 mA drive capability ensures consistent level and phase across all outputs under load.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
NE5534AD	Higher input bias current (300 nA vs. 250 nA typ.), lower GBP (10 MHz), no integrated ESD protection	Legacy audio design compatibility; less suitable for modern compact PCBs with handling risk	Prefer where legacy footprint reuse is critical and ESD control is managed externally
OPA4134UA	FET-input (lower I_ib = 10 pA), higher cost, 8 MHz GBP, 20 V/µs slew rate	Better for high-Z sensor interfaces; overqualified for standard line-level audio buffering	Select only when ultra-low input current is required (e.g., piezo pickups), not for general audio gain stages

Compared with NE5534AD and OPA4134UA, TS524ID offers optimal balance of low noise, robust ESD tolerance, and cost-effective SO14 packaging - making it preferred for new-design studio and broadcast audio signal chains where reliability and measured THD matter more than ultra-low I_ib.

Availability

TS524ID is available at Aetrix Electronics and suitable for professional audio mixer channel strips, high-resolution DAC output buffering, studio microphone preamp stages, and line-level distribution amplifiers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TS524ID 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, with R&D and manufacturing facilities across Europe, Asia, and the Americas.

The TS524 belongs to ST's precision analog op-amp product line, engineered specifically for high-fidelity audio signal processing where low noise, low distortion, and thermal stability are mandatory - not generic signal conditioning.

FAQ

What is the maximum safe supply voltage for TS524ID?

The absolute maximum supply voltage is ±18 V, but the recommended operating range is ±2.5 V to ±15 V per the electrical characteristics table. Operation beyond ±15 V risks exceeding junction temperature limits under load, especially in SO14 packages with limited thermal dissipation. Derating is required above +85°C ambient.

Does TS524ID support single-supply operation?

No - TS524ID is specified exclusively for dual-supply operation (±V_CC). Its input common-mode range and output swing are centered around ground, and the internal architecture lacks rail-to-rail input or output stages. Single-supply use would violate Vicm and Vopp limits and cause clipping or phase reversal.

How does the 2 kV ESD rating apply in practice?

The 2 kV rating follows Human Body Model (HBM) per JESD22-A114. It reflects robustness during manual handling and PCB assembly, not system-level ESD immunity. Board-level protection (e.g., TVS diodes) remains necessary for I/O lines exposed to connectors or cables in final equipment.

Can TS524ID drive 600 Ω professional audio loads?

Yes - it delivers ±13.2 V output swing into 600 Ω with <0.002% THD at 1 kHz, meeting EBU R68 and AES17 line-driving standards. Sustained operation requires thermal derating: total power dissipation must stay below 500 mW, limiting continuous output to ~150 mW per channel at full swing.

TS524ID Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Tube

Product Status:: Obsolete

Amplifier Type:: Audio

Number of Circuits:: 4

Output Type:: -

Slew Rate:: 7V/µs

Gain Bandwidth Product:: 15 MHz

-3db Bandwidth:: -

Current - Input Bias:: 250 nA

Voltage - Input Offset:: 950 µV

Current - Supply:: 8mA

Current - Output / Channel:: 37 mA

Voltage - Supply Span (Min):: 5 V

Voltage - Supply Span (Max):: 30 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

TS524ID FAQ

1.How can I place an order for TS524ID through Aetrix?

Please submit a Request for Quotation (RFQ) for TS524ID 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 TS524ID reliable?

The price and inventory of TS524ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS524ID is usually 5 days.

3.What payment methods are accepted for TS524ID?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS524ID transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS524ID?

TS524ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS524ID 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 TS524ID?

For technical support, including TS524ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS524ID requirements.

6.How does Aetrix verify that TS524ID is sourced from the original manufacturer or authorized distributors?

All TS524ID 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 TS524ID meets industry standards.

7.What is the process for return or replacement of TS524ID?

All TS524ID units undergo pre-shipment inspection (PSI). If there is an issue with TS524ID, 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 TS524ID part is unused and in its original packaging.

Return procedure for TS524ID:

1.Submit a request within 90 days.

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

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