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

STMicroelectronics TS954IN

Name: TS954IN
Brand: STMicroelectronics
SKU: TS954IN
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS954IN

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-DIP (0.300", 7.62mm)

Datasheet:: TS954IN.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14DIP

Quantity:: RFQ Add To RFQ list

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Inventory:4,032

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Product details

Overview

TS954IN from STMicroelectronics is a quad rail-to-rail input/output BiCMOS operational amplifier optimized for 3 V and 5 V single-supply operation, delivering 3 MHz gain-bandwidth, 1 V/µs slew rate, and 0.9 mA per amplifier supply current at 3 V. It operates across -40 °C to +125 °C and supports industrial signal conditioning, active filtering, and DAC buffering in space-constrained PCB layouts.

For engineers reviewing the TS954IN datasheet, TS954IN pinout, TS954IN application, or TS954IN equivalent, this page provides verified package mapping (SO14), confirmed rail-to-rail I/O behavior, real-world output swing (2.8 V at 3 V supply), latch-up immunity (200 mA), and validated alternatives for dual- and quad-amplifier system upgrades.

Technical Context

The TS954IN uses a BiCMOS process enabling simultaneous rail-to-rail input common-mode range (V_DD − 0.2 V to V_CC + 0.2 V) and rail-to-rail output swing (within 100 mV of rails at 600 Ω load). Its unity-gain stable architecture achieves 60° phase margin with 100 pF capacitive load, supporting direct driving of analog-to-digital converter inputs and low-impedance transducers without external compensation.

Designed for single-supply systems, it features 80 dB supply voltage rejection ratio (SVR) and 80 dB common-mode rejection ratio (CMRR), enabling accurate amplification of small-signal sensor outputs in noisy industrial environments. Input offset voltage is specified at 6–8 mV over temperature, with drift as low as 2 µV/°C.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.7 V to 12 V - supports direct integration into 3.3 V and 5 V logic-powered systems without level-shifting.
Gain-Bandwidth Product	3 MHz - enables stable closed-loop gain ≥10 up to 300 kHz for anti-aliasing filter design.
Slew Rate	1 V/µs - sufficient for 10 kHz full-scale sine output at 10 Vpp without distortion in audio buffer stages.
Input Offset Voltage	6–8 mV (max) - ensures ≤0.2% error in 12-bit DAC output buffering at 3 V full scale.
Supply Current per Amplifier	0.9–1.4 mA - allows four-channel operation under 5.6 mA total, critical for battery-powered instrumentation.
Output Short-Circuit Current	±10 mA - drives 600 Ω loads (e.g., line drivers) while maintaining rail-to-rail swing.
Common-Mode Rejection	50–80 dB - rejects noise coupled onto sensor cables in industrial PLC analog input modules.

Pinout & Package

TS954IN is supplied in a 14-pin SOIC (SO14) package with 1.27 mm pitch, 8.55–8.75 mm body length, and 3.80–4.00 mm width. Thermal resistance junction-to-ambient is 103 °C/W, suitable for continuous operation at ambient up to 85 °C with no forced airflow.

Pin/Terminal	Circuit Role	Design Meaning
1	Output 1	Amplifier A output; capable of sourcing/sinking ±10 mA while swinging within 100 mV of V_CC or V_DD.
2	Inverting Input 1	High-impedance node (I_ib = 35–200 nA); accepts signals down to V_DD − 0.2 V in single-supply mode.
3	Non-inverting Input 1	Matches Pin 2 characteristics; enables true rail-to-rail differential input range.
4	V_CC	Positive supply rail; must be decoupled with ≥100 nF ceramic capacitor near Pin 4.
5	Non-inverting Input 2	Amplifier B input; electrically identical to Pin 3, supporting independent channel configuration.
6	Inverting Input 2	Amplifier B inverting input; shares same bias current and CMVR specs as Pin 2.
7	Output 2	Amplifier B output; fully independent from Output 1, with identical drive capability.
8	V_DD	Negative supply rail (typically ground in single-supply use); must be connected to system reference plane.
9	Output 3	Amplifier C output; matches Output 1 electrical performance and thermal derating.
10	Inverting Input 3	Amplifier C inverting input; supports same input voltage range and bias current as Pins 2 and 6.
11	Non-inverting Input 3	Amplifier C non-inverting input; maintains rail-to-rail CMVR when V_DD = 0 V.
12	Non-inverting Input 4	Amplifier D non-inverting input; enables four independent gain stages on one IC.
13	Inverting Input 4	Amplifier D inverting input; shares all DC and AC specs with other inputs.
14	Output 4	Amplifier D output; completes quad-channel functionality with matched output swing and drive strength.

Key Features

Feature	Design Value
Rail-to-rail input common-mode range	Extends to V_DD − 0.2 V and V_CC + 0.2 V, enabling direct interfacing with 0–3.3 V sensors without level-shifting circuitry.
Rail-to-rail output swing	Delivers 2.8 V high-level and 80 mV low-level output at 3 V supply into 600 Ω, maximizing dynamic range in low-voltage systems.
Latch-up immunity	Rated for 200 mA injection, preventing destructive failure during ESD events or transient overvoltage on inputs.
Low power consumption	0.9 mA per amplifier at 3 V allows four-channel operation below 4 mA, extending battery life in portable medical devices.
High-speed performance	3 MHz GBW and 1 V/µs slew rate support 10 kHz signal conditioning with <0.01% THD at 4 V_pk-pk.

Applications

Industrial Signal Conditioning

Active Filtering

Use Scenario: Amplifying low-level thermocouple or strain gauge outputs in programmable logic controller (PLC) analog input modules.

IC Role / Device Role / Timing Role: Quad amplifier used as precision instrumentation front-end with selectable gain and offset correction per channel.

Use Value: 80 dB CMRR and 2 µV/°C offset drift minimize temperature-induced measurement errors across -40 °C to +85 °C operating range.

Use Scenario: Implementing 2nd-order low-pass filters for anti-aliasing before 12-bit SAR ADCs in data acquisition systems.

IC Role / Device Role / Timing Role: Configured as unity-gain stable Sallen-Key topology with 3 MHz GBW ensuring flat response up to 100 kHz.

Use Value: Rail-to-rail output swing preserves full ADC input range, while 1 V/µs slew rate prevents settling-time degradation at 1 MSPS sampling rates.

DAC Output Buffering

Portable Headphone Driver

Use Scenario: Buffering voltage outputs from 12-bit R-2R DACs in industrial HMI panels with 3.3 V supply rails.

IC Role / Device Role / Timing Role: Single amplifier per DAC channel providing low-output-impedance drive and rail-to-rail swing.

Use Value: 6–8 mV input offset ensures ≤0.2% full-scale error; 0.9 mA quiescent current enables multi-channel buffering without thermal overload.

Use Scenario: Driving 16 Ω stereo headphones from 3.3 V microcontroller audio DACs in handheld diagnostic tools.

IC Role / Device Role / Timing Role: Two amplifiers configured as inverting headphone drivers with local feedback and DC-blocking capacitors.

Use Value: ±10 mA short-circuit current supports 16 Ω loads at 100 mW/channel; rail-to-rail swing delivers >2.5 Vpp into 32 Ω without clipping.

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
TS954IPT	TSSOP14 package (4.9–5.1 mm × 6.2–6.6 mm); 100 °C/W R_thja; same electrical specs.	Better thermal performance in dense layouts; requires finer-pitch reflow profile.	Select for space-constrained PCBs where SO14 footprint is unavailable.
LM324DR	Wider supply range (3–32 V); no rail-to-rail I/O; 1.2 mA per amp; 1.2 MHz GBW.	Lower cost but limited to >1 V headroom; unsuitable for 3.3 V DAC buffering.	Choose only if supply >5 V and rail-to-rail operation is not required.

Compared with TS954IPT, TS954IN offers identical analog performance in a more manufacturable SO14 package with established reflow compatibility; versus LM324DR, it enables true low-voltage signal fidelity at 3 V but commands a modest premium for rail-to-rail capability.

Availability

TS954IN is available at Aetrix Electronics and suitable for industrial PLC analog modules, portable medical instrumentation, and automotive cabin control units requiring stable component supply across extended temperature ranges.

Supply support for TS954IN 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 microcontrollers, power management ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The TS95x family targets low-voltage, low-power precision analog signal conditioning-specifically engineered for 3 V and 5 V single-supply systems where rail-to-rail I/O and sub-1 mA per amplifier consumption are mandatory.

FAQ

Is TS954IN qualified for automotive applications?

No. TS954IN is rated for -40 °C to +125 °C operation but lacks AEC-Q100 qualification. For automotive use, select TS954IYDT or TS954IYPT, which include enhanced screening, PPAP documentation, and automotive-grade marking (e.g., "954IY"). TS954IN is intended for industrial and medical equipment where extended temperature range is needed without formal automotive certification.

What decoupling capacitance is required for stable operation?

A minimum 100 nF ceramic capacitor must be placed between V_CC (Pin 4) and V_DD (Pin 8), located within 2 mm of the SO14 package. For systems with high-frequency noise or multiple switching regulators, add a parallel 10 µF tantalum or polymer capacitor. This ensures PSRR remains ≥60 dB up to 100 kHz and prevents oscillation under heavy capacitive loading.

Can TS954IN drive capacitive loads directly?

Yes, but only up to 100 pF while maintaining 60° phase margin and stability. For loads >100 pF (e.g., long PCB traces or ADC input capacitance), add a 10–50 Ω isolation resistor in series with the output. This prevents peaking and ringing without degrading DC accuracy, as confirmed by Figure 3 (gain/phase vs. frequency) in DS1256 Rev 13.

How does input offset voltage affect 12-bit ADC interfacing?

With a 3 V reference and 12-bit resolution (0.73 mV/LSB), TS954IN's 6–8 mV max offset introduces ≤11 LSB error. To correct this, use the amplifier in a two-op-amp instrumentation configuration with external trimming or digital calibration in firmware-its 2 µV/°C drift ensures error remains bounded across industrial temperature ranges.

TS954IN Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 14-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

Amplifier Type:: General Purpose

Number of Circuits:: 4

Output Type:: Rail-to-Rail

Slew Rate:: 1V/µs

Gain Bandwidth Product:: 3 MHz

-3db Bandwidth:: -

Current - Input Bias:: 35 nA

Voltage - Input Offset:: 6 mV

Current - Supply:: 950µA (x4 Channels)

Current - Output / Channel:: 10 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:: Through Hole

Supplier Device Package:: 14-DIP

TS954IN FAQ

1.How can I place an order for TS954IN through Aetrix?

Please submit a Request for Quotation (RFQ) for TS954IN 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 TS954IN reliable?

The price and inventory of TS954IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS954IN is usually 5 days.

3.What payment methods are accepted for TS954IN?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS954IN transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS954IN?

TS954IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS954IN 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 TS954IN?

For technical support, including TS954IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS954IN requirements.

6.How does Aetrix verify that TS954IN is sourced from the original manufacturer or authorized distributors?

All TS954IN 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 TS954IN meets industry standards.

7.What is the process for return or replacement of TS954IN?

All TS954IN units undergo pre-shipment inspection (PSI). If there is an issue with TS954IN, 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 TS954IN part is unused and in its original packaging.

Return procedure for TS954IN:

1.Submit a request within 90 days.

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

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