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

STMicroelectronics TS274ACDT

Name: TS274ACDT
Brand: STMicroelectronics
SKU: TS274ACDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS274ACDT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: TS274ACDT.pdf

Description:: IC CMOS 4 CIRCUIT 14SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TS274ACDT from STMicroelectronics is a high-performance CMOS quad operational amplifier designed for single- or dual-supply operation, featuring 3.5 MHz gain bandwidth product, 1 mA/amp supply current, rail-to-ground output swing, and 65–80 dB common-mode rejection. It operates across 3–16 V supply range with input voltage range extending to V_CC − 1.5 V, and is widely used in precision sensor signal conditioning and low-power industrial analog front-ends.

For engineers reviewing the TS274ACDT datasheet, TS274ACDT pinout, TS274ACDT application, or TS274ACDT equivalent, key selection criteria include its 10–15 V/mV large-signal voltage gain, 5.5 V/µs slew rate, ±100 mV low-level output voltage capability, and compatibility with capacitive loads up to 100 pF while maintaining ≥40° phase margin.

Technical Context

The TS274ACDT employs ST's silicon-gate CMOS process to achieve ultra-low input bias current (≤150 pA) and minimal drift (2 µV/°C), distinguishing it from JFET-input op-amps. Its internal architecture includes a two-stage transconductance amplifier with dominant-pole compensation, enabling unity-gain stability without external components.

It supports rail-to-ground output swing but not rail-to-rail input - common-mode range is limited to 0 V to V_CC − 1.5 V. The device is specified for commercial temperature range (0°C to +70°C) and offered in SO-14 package with ECOPACK® lead-free finish.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain Bandwidth Product	3.5 MHz - sets maximum closed-loop bandwidth at gain = 10 to ~350 kHz
Supply Current per Amplifier	1000–1600 µA - enables stable operation in low-noise, medium-speed analog stages without thermal runaway
Input Offset Voltage	0.9–5 mV (typ/max @ 25°C) - defines DC error floor in precision DC-coupled amplifiers
Common-Mode Rejection Ratio	65–80 dB - ensures <1% error rejection of shared noise on differential inputs
Slew Rate	5.5 V/µs - supports clean 100 kHz sine output at 2 V_PP without distortion
Output Voltage Swing	0 V to V_CC − 1.2 V - allows ground-referenced output in single-supply systems
Phase Margin	≥40° with 100 pF load - guarantees stable unity-gain buffer operation without oscillation

Pinout & Package

TS274ACDT is supplied in a 14-pin SOIC (SO-14) package with standard JEDEC MS-012AC footprint, 1.27 mm pitch, and ECOPACK® lead-free termination. Thermal resistance is R_thJA = 103 °C/W (typical).

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting Input (Amp 1)	High-impedance node accepting differential signal; requires matched trace impedance for noise immunity
2	Non-inverting Input (Amp 1)	DC-biased reference point for single-supply configurations; tied to V_CC/2 via resistor divider
3	Output (Amp 1)	Capable of sourcing 45 mA and sinking 60 mA; drives 10 kΩ loads to within 50 mV of rails
4	V_CC− (Negative Supply / Ground)	Reference return path for all four amplifiers; must be low-impedance to minimize crosstalk
5	Inverting Input (Amp 2)	Independent input stage; shares no internal nodes with Amp 1 - enables true quad isolation
6	Non-inverting Input (Amp 2)	Configurable for instrumentation or filter topologies; unaffected by Amp 1's input bias current
7	Output (Amp 2)	Electrically isolated output; channel separation >120 dB prevents signal coupling between stages
8	Output (Amp 3)	Third independent output; usable as active filter stage or reference buffer without loading Amp 1/2
9	Inverting Input (Amp 3)	High-Z input with ≤150 pA bias current - suitable for photodiode or high-R sensor interfaces
10	Non-inverting Input (Amp 3)	Supports DC-coupled level-shifting when biased above ground in single-supply mode
11	Output (Amp 4)	Final output stage; capable of driving 100 pF capacitive loads with ≥40° phase margin
12	Inverting Input (Amp 4)	Valid down to 0 V common-mode - enables ground-sensing applications such as current shunt monitoring
13	Non-inverting Input (Amp 4)	Accepts input signals referenced to ground; compatible with 0–3.3 V microcontroller ADC references
14	V_CC+ (Positive Supply)	3–16 V operating range; internal regulation ensures consistent GBP and SR across full voltage span

Key Features

Feature	Design Value
Rail-to-ground output swing	Enables direct interfacing with 0 V-referenced ADCs or comparators without level-shifting circuitry
Unity-gain stable with capacitive loads	Eliminates need for external compensation networks when driving cables, filters, or ADC input capacitance
Ultra-low input bias current (≤150 pA)	Preserves signal integrity in high-impedance sensor circuits (e.g., pH electrodes, piezoelectric transducers)
Low input offset voltage drift (2 µV/°C)	Reduces calibration frequency in temperature-varying environments like HVAC or industrial control panels
Four independent amplifiers in one SO-14 package	Minimizes PCB area and BOM count in multi-channel signal chains such as 4-wire RTD or strain gauge systems

Applications

Industrial Sensor Signal Conditioning

Multi-Channel Data Acquisition Front-End

Use Scenario: Amplifying low-level mV outputs from 4–20 mA loop-powered pressure transmitters in factory automation PLC modules.

IC Role / Device Role / Timing Role: Quad op-amp configured as precision instrumentation amplifier (Amp 1&2), reference buffer (Amp 3), and anti-alias filter driver (Amp 4).

Use Value: 65–80 dB CMRR rejects common-mode noise from shared 24 V DC bus; rail-to-ground swing matches 0–5 V ADC input range.

Use Scenario: Simultaneous acquisition of four thermocouple outputs using cold-junction compensation and linearization in embedded data loggers.

IC Role / Device Role / Timing Role: Four independent amplifiers provide gain, offset correction, filtering, and reference buffering per channel.

Use Value: Channel separation >120 dB prevents crosstalk between thermocouple channels; 2 µV/°C drift minimizes recalibration needs over ambient temperature swings.

Single-Supply Active Filter Bank

Low-Power Analog Monitoring in Battery Systems

Use Scenario: Implementing cascaded 2nd-order Sallen-Key low-pass filters for EMI suppression in motor drive feedback paths.

IC Role / Device Role / Timing Role: Each amplifier serves as unity-gain buffer, integrator, or summing node in filter topology.

Use Value: Unity-gain stability with 100 pF loads eliminates need for isolation resistors; 5.5 V/µs slew rate supports 100 kHz cutoff without phase lag.

Use Scenario: Monitoring cell voltages and pack temperature in 12S Li-ion battery management systems powered by 3.3 V LDO.

IC Role / Device Role / Timing Role: Quad amplifier used for cell voltage scaling (×0.25), temperature sensor amplification, reference buffering, and fault comparator input conditioning.

Use Value: 1 mA/amp supply current enables continuous monitoring with <4 mA total quiescent draw; 0–16 V supply range accommodates wide input voltage transients.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad operational amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TSV914IDT	Rail-to-rail I/O, lower V_io (1.5 mV max), higher GBP (8 MHz), but narrower V_CC range (2.5–5.5 V)	Better suited for 3.3 V microcontroller-based systems requiring full rail utilization and faster settling	Select when V_CC ≤ 5.5 V and rail-to-rail input/output is mandatory; avoid for 12 V sensor interfaces
LM324DT	Bipolar input, higher I_ib (45 nA), lower GBP (1.2 MHz), no guaranteed phase margin with capacitive loads	Lower cost, wider temp range (−40°C to +125°C), but unsuitable for high-Z sensor or high-frequency filtering	Choose only for non-critical, low-speed, cost-sensitive designs where input bias current and stability are not limiting factors

Compared with TSV914IDT and LM324DT, TS274ACDT uniquely balances CMOS input performance (pA-level I_ib, low drift) with robust 3–16 V operation and proven capacitive-load stability - making it optimal for industrial analog signal chains where supply voltage flexibility and long-term DC accuracy matter more than rail-to-rail convenience or ultra-high speed.

Availability

TS274ACDT is available at Aetrix Electronics and suitable for industrial sensor conditioning, multi-channel data acquisition, single-supply active filtering, and low-power battery monitoring requiring stable component supply across extended temperature and voltage ranges.

Supply support for TS274ACDT 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, delivering innovative solutions across automotive, industrial, power, and analog markets since 1987.

The TS274 belongs to ST's legacy high-performance CMOS op-amp family, engineered specifically for precision, low-power industrial analog signal processing where input bias current, offset drift, and supply flexibility outweigh raw speed requirements.

FAQ

Is TS274ACDT pin-compatible with other TS27x series devices?

Yes - TS274ACDT uses the standard SO-14 pinout shared across all TS27x quad op-amps (e.g., TS27L4, TS27M4). Pin functions are identical; only supply current, offset voltage, and GBP differ between variants. No PCB redesign is needed when upgrading from TS27L4 or TS27M4 to TS274ACDT.

Can TS274ACDT drive a 1000 pF load without oscillation?

No - the datasheet guarantees ≥40° phase margin only up to 100 pF capacitive load at unity gain. Driving 1000 pF requires external isolation (e.g., 100 Ω series resistor) or gain ≥10 to maintain stability. Uncompensated 1000 pF loads risk sustained ringing or oscillation due to reduced loop phase margin.

What is the maximum recommended supply voltage for continuous operation?

The absolute maximum rating is 18 V, but the recommended operating range is 3–16 V per Table 3. Operating continuously at 17–18 V risks accelerated parameter drift and reduced long-term reliability; ST specifies electrical characteristics only up to 16 V, and thermal dissipation rises significantly above that threshold.

Does TS274ACDT support dual-supply operation with ±5 V?

Yes - the device supports dual supplies as long as total V_CC+ − V_CC− remains within 3–16 V and both rails stay within absolute maximum ratings (e.g., +5 V / −5 V yields 10 V total, which is valid). Input common-mode range becomes −0.3 V to +3.5 V in this configuration, and output swings from −4.8 V to +3.8 V typical.

TS274ACDT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: CMOS

Number of Circuits:: 4

Output Type:: -

Slew Rate:: 5.5V/µs

Gain Bandwidth Product:: 3.5 MHz

-3db Bandwidth:: -

Current - Input Bias:: 1 pA

Voltage - Input Offset:: 900 µV

Current - Supply:: 1mA

Current - Output / Channel:: 45 mA

Voltage - Supply Span (Min):: 3 V

Voltage - Supply Span (Max):: 16 V

Operating Temperature:: 0°C ~ 70°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

TS274ACDT FAQ

1.How can I place an order for TS274ACDT through Aetrix?

Please submit a Request for Quotation (RFQ) for TS274ACDT 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 TS274ACDT reliable?

The price and inventory of TS274ACDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS274ACDT is usually 5 days.

3.What payment methods are accepted for TS274ACDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS274ACDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS274ACDT?

TS274ACDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS274ACDT 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 TS274ACDT?

For technical support, including TS274ACDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS274ACDT requirements.

6.How does Aetrix verify that TS274ACDT is sourced from the original manufacturer or authorized distributors?

All TS274ACDT 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 TS274ACDT meets industry standards.

7.What is the process for return or replacement of TS274ACDT?

All TS274ACDT units undergo pre-shipment inspection (PSI). If there is an issue with TS274ACDT, 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 TS274ACDT part is unused and in its original packaging.

Return procedure for TS274ACDT:

1.Submit a request within 90 days.

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

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