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

STMicroelectronics TS27L4CPT

Name: TS27L4CPT
Brand: STMicroelectronics
SKU: TS27L4CPT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS27L4CPT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: TS27L4CPT.pdf

Description:: IC CMOS 4 CIRCUIT 14TSSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TS27L4CPT from STMicroelectronics is a very low power precision CMOS quad operational amplifier in TSSOP-14 package, featuring 10 µA/op supply current, ±18 V absolute max input differential voltage, and rail-to-ground output swing. It operates from 3 V to 16 V single supply and delivers 0.04 V/µs slew rate with 0.1 MHz gain-bandwidth product - ideal for battery-powered sensor signal conditioning in portable instrumentation.

For engineers reviewing the TS27L4CPT datasheet, TS27L4CPT pinout, TS27L4CPT application, or TS27L4CPT equivalent, key selection criteria include ultra-low quiescent current, input offset voltage ≤12 mV (C-grade), capacitive-load stability up to 100 pF, and guaranteed operation over 0°C to +70°C ambient temperature.

Technical Context

The TS27L4CPT integrates four independent CMOS op-amps on a single die using ST's silicon gate process, delivering high input impedance (>10¹² Ω) and ultra-low input bias current (1–150 pA). Its internal architecture includes a second-stage compensation network enabling unity-gain stability without external components.

It supports single-supply operation with common-mode input range extending to ground and output swing within 50 mV of ground. Phase margin remains ≥45° across 3–16 V supply and up to 100 pF capacitive load, eliminating oscillation risk in high-impedance sensor interfaces.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Current	10 µA per amplifier - enables multi-year operation on coin-cell batteries in always-on monitoring nodes.
Input Offset Voltage	≤12 mV (max, C-grade) - ensures <0.1% error in 12-bit ADC front-end applications at room temperature.
Gain-Bandwidth Product	0.1 MHz - sufficient for DC–10 kHz signal conditioning in thermistor, RTD, or photodiode amplifiers.
Slew Rate	0.04 V/µs - limits large-signal response time to ~25 µs for 1 V step, suitable for slow-varying sensor outputs.
Common-Mode Range	0 V to V_CC − 1.5 V - allows direct interfacing with ground-referenced transducers without level-shifting.
Output Swing	Within 50 mV of ground and ≥8.8 V at V_CC = 10 V - supports rail-to-rail compatible ADC inputs with minimal headroom loss.
Phase Margin	≥45° at unity gain with 100 pF load - guarantees stable closed-loop behavior in high-capacitance PCB traces or filter networks.

Pinout & Package

TSSOP-14 (Thin Shrink Small Outline Package), 5.0 mm × 6.4 mm body, 0.65 mm pitch, lead-free ECOPACK® compliant.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting Input (Amp 1)	High-impedance node for feedback configuration; accepts signals down to ground potential.
2	Non-inverting Input (Amp 1)	Accepts common-mode voltages from 0 V to V_CC − 1.5 V; critical for sensor reference routing.
3	Output (Amp 1)	Capable of sinking 45 mA and sourcing 60 mA; drives 1 MΩ loads with <50 mV ground offset.
4	V_CC− (Ground)	Power return path; must be low-impedance connection to minimize PSRR degradation.
5	Non-inverting Input (Amp 2)	Independent input stage; shares no internal nodes with Amp 1 - enables isolated dual-channel sensing.
6	Inverting Input (Amp 2)	Configurable for transimpedance or difference amplification; input bias current ≤150 pA.
7	Output (Amp 2)	Electrically isolated output; channel separation >120 dB prevents crosstalk in multi-sensor systems.
8	V_CC+	Single-supply rail (3–16 V); decoupling capacitor required within 5 mm for stability.
9	Output (Amp 3)	Delivers same performance as Amp 1/2; usable for active filtering or reference buffering.
10	Inverting Input (Amp 3)	Compatible with AC-coupled or DC-coupled topologies; input offset drift ≤2 µV/°C.
11	Non-inverting Input (Amp 3)	Supports rail-to-rail input; enables direct connection to resistive divider references.
12	Output (Amp 4)	Final channel for system-level functions like comparator hysteresis generation or LED drive control.
13	Inverting Input (Amp 4)	Low-noise node (68 nV/√Hz at 1 kHz); optimized for low-frequency (<10 kHz) precision amplification.
14	Non-inverting Input (Amp 4)	Matches input characteristics of other channels; ensures consistent offset and drift across all four amps.

Key Features

Feature	Design Value
Ultra-low power consumption	10 µA per amplifier enables >10-year battery life in wireless sensor nodes powered by CR2032 cells.
Rail-to-ground output swing	Output reaches within 50 mV of ground - eliminates need for negative supply in single-supply data acquisition systems.
Unity-gain stable	No external compensation required; simplifies layout and reduces BOM count in voltage-follower or buffer designs.
High capacitive-load tolerance	Maintains ≥45° phase margin with up to 100 pF load - supports direct driving of long PCB traces or LCD bias networks.
Low input current drift	2 µV/°C offset drift and <150 pA bias current drift - preserves calibration integrity across industrial temperature ranges.

Applications

Portable Gas Sensor Front-End

Medical Thermistor Signal Chain

Use Scenario: Amplifying nanoamp-level current from electrochemical gas sensors in handheld air quality monitors.

IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) and low-pass filter driver for 12-bit SAR ADC.

Use Value: 10 µA/op quiescent current extends CR2032 battery life beyond 3 years; rail-to-ground output matches ADC input range.

Use Scenario: Conditioning resistance changes from NTC thermistors in wearable patient temperature patches.

IC Role / Device Role / Timing Role: Precision voltage follower and ratiometric reference buffer for bridge-based sensing.

Use Value: ≤12 mV input offset and 2 µV/°C drift ensure ±0.1°C accuracy over 0–50°C operating range.

Industrial RTD Signal Conditioning

Low-Power Data Logger Analog Front-End

Use Scenario: Amplifying microvolt-level delta-V from 3-wire Pt100 RTD bridges in factory-floor temperature transmitters.

IC Role / Device Role / Timing Role: Instrumentation amplifier first stage and excitation current source buffer.

Use Value: >10¹² Ω input impedance prevents RTD self-heating errors; 120 dB channel separation avoids cross-talk between dual RTD channels.

Use Scenario: Simultaneous buffering of multiple analog sensor outputs (light, humidity, acceleration) in solar-powered environmental loggers.

IC Role / Device Role / Timing Role: Quad-channel unity-gain buffer isolating sensors from multiplexer and ADC input capacitance.

Use Value: Four independent amplifiers in one TSSOP-14 reduce PCB area by 60% vs discrete solutions while maintaining <1 µA total standby current.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV2464IPW	Higher supply current (230 µA/op), wider GBW (6.4 MHz), but requires ≥2.7 V supply and lacks guaranteed ground-swing output.	Better for higher-speed sensor interfaces (>100 kHz), unsuitable for sub-3 V or true rail-to-ground output requirements.	Select when bandwidth >100 kHz is needed and battery life is secondary to signal fidelity.
LPV521MG/NOPB	Lower supply current (320 nA/op), but only single-channel, lower output drive (25 mA), and narrower supply range (1.8–5.5 V).	Ideal for ultra-low-power single-sensor nodes; cannot replace quad functionality without adding three more ICs.	Choose for new designs targeting <1 µA total analog front-end current where channel count is not constrained.

Compared with TLV2464IPW and LPV521MG/NOPB, TS27L4CPT uniquely balances quad-channel integration, true rail-to-ground output, and 10 µA/op consumption - making it optimal for space-constrained, single-supply, battery-operated multi-sensor systems requiring moderate bandwidth and high DC precision.

Availability

TS27L4CPT is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, battery-powered environmental monitors, and low-power data acquisition systems requiring stable component supply across extended production lifecycles.

Supply support for TS27L4CPT 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, analog ICs, MEMS, and power devices for industrial, automotive, and consumer markets.

The TS27L4 series belongs to ST's precision analog portfolio, engineered specifically for ultra-low-power signal conditioning in battery-operated instrumentation where DC accuracy, supply flexibility, and long-term stability are critical.

FAQ

What is the maximum capacitive load the TS27L4CPT can drive while remaining stable?

The TS27L4CPT maintains ≥45° phase margin with up to 100 pF capacitive load at unity gain, as verified in Figure 12 of the datasheet. This allows direct connection to long PCB traces, LCD bias lines, or ADC input capacitors without external isolation resistors or compensation networks.

Does the TS27L4CPT support true rail-to-rail input and output?

The TS27L4CPT supports rail-to-ground output swing (within 50 mV of ground) and common-mode input range from 0 V to V_CC − 1.5 V. It does not support full rail-to-rail input - the upper input limit is 1.5 V below V_CC, and output cannot reach V_CC (minimum high-level output is 8.8 V at V_CC = 10 V).

Can the TS27L4CPT operate from a 2.5 V supply?

No. The TS27L4CPT has a minimum specified supply voltage of 3 V per Table 2 (Operating Conditions). Operation below 3 V is outside guaranteed specifications and may result in degraded output swing, increased input offset, or instability due to insufficient internal bias headroom.

How does the input offset voltage of TS27L4CPT compare between C-grade and I-grade versions?

The C-grade (TS27L4CPT) specifies input offset voltage ≤12 mV (max) at 25°C, while the I-grade (TS27L4IPT) tightens this to ≤6.5 mV (max) across −40°C to +125°C. Both grades share identical 2 µV/°C drift specification, but I-grade provides superior initial accuracy over extended temperature range.

TS27L4CPT 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:: CMOS

Number of Circuits:: 4

Output Type:: -

Slew Rate:: 0.04V/µs

Gain Bandwidth Product:: 100 kHz

-3db Bandwidth:: -

Current - Input Bias:: 1 pA

Voltage - Input Offset:: 1.1 mV

Current - Supply:: 10µA (x4 Channels)

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-TSSOP

TS27L4CPT FAQ

1.How can I place an order for TS27L4CPT through Aetrix?

Please submit a Request for Quotation (RFQ) for TS27L4CPT 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 TS27L4CPT reliable?

The price and inventory of TS27L4CPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS27L4CPT is usually 5 days.

3.What payment methods are accepted for TS27L4CPT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS27L4CPT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS27L4CPT?

TS27L4CPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS27L4CPT 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 TS27L4CPT?

For technical support, including TS27L4CPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS27L4CPT requirements.

6.How does Aetrix verify that TS27L4CPT is sourced from the original manufacturer or authorized distributors?

All TS27L4CPT 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 TS27L4CPT meets industry standards.

7.What is the process for return or replacement of TS27L4CPT?

All TS27L4CPT units undergo pre-shipment inspection (PSI). If there is an issue with TS27L4CPT, 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 TS27L4CPT part is unused and in its original packaging.

Return procedure for TS27L4CPT:

1.Submit a request within 90 days.

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

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