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STMicroelectronics TS27L4IDT
- Part No.:
- TS27L4IDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS27L4IDT.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:12,088
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Product details
Overview
TS27L4IDT from STMicroelectronics is a very low power precision CMOS quad operational amplifier with 10 µA/op supply current, rail-to-ground output swing, unity-gain stability, and ±18 V absolute maximum supply voltage. It operates over -40°C to +125°C and is specified for single-supply (3–16 V) or dual-supply use in battery-powered sensor signal conditioning and portable instrumentation.
For engineers reviewing the TS27L4IDT datasheet, TS27L4IDT pinout, TS27L4IDT application, or TS27L4IDT equivalent, key selection criteria include ultra-low quiescent current, input offset voltage ≤12 mV (max), input bias current ≤300 pA (max), and guaranteed phase margin ≥45° on capacitive loads - critical for stable operation in high-impedance, low-power analog front-ends.
Technical Context
The TS27L4IDT integrates four independent CMOS op-amps using ST's silicon gate process, delivering high input impedance (>10¹² Ω) and negligible input current drift versus temperature. Its internal architecture features a second-stage current source and optimized output stage enabling rail-to-ground output swing without external pull-downs.
It supports unity-gain stable operation with 0.1 MHz gain-bandwidth product and 0.04 V/µs slew rate, while maintaining 65 dB minimum common-mode rejection and 60 dB minimum supply voltage rejection across its full operating range - making it suitable for precision DC-coupled amplification where power and stability are co-constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply current per amp | 10 µA typ. - enables multi-year battery life in always-on sensor nodes |
| Input offset voltage | 12 mV max. - sets DC accuracy limit for 12-bit-equivalent signal chains |
| Input bias current | 300 pA max. - preserves signal integrity in >1 MΩ source impedance circuits |
| Output voltage swing | 0 V to VCC−1.5 V - supports ground-referenced output in single-supply systems |
| Phase margin | 45° min. - ensures stable closed-loop response with up to 100 pF capacitive load |
| Gain-bandwidth product | 0.1 MHz - sufficient for DC–10 kHz sensor amplification with minimal power penalty |
| Common-mode rejection | 65 dB min. - rejects noise from shared reference rails in mixed-signal PCBs |
Pinout & Package
TS27L4IDT is supplied in SO-14 (plastic micropackage), 150 mil body width, with standard 1.27 mm pitch. Pin numbering follows JEDEC MS-012AC, top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input, Amp A | Differential input node for first op-amp; high-impedance CMOS input |
| 2 | Non-inverting input, Amp A | Reference input for Amp A; matched to Pin 1 for offset minimization |
| 3 | Output, Amp A | Push-pull output capable of sourcing/sinking 45 mA; swings to ground |
| 4 | VCC− (GND) | Ground reference for single-supply operation; return path for all amps |
| 5 | Non-inverting input, Amp B | Second op-amp non-inverting input; electrically isolated from other inputs |
| 6 | Inverting input, Amp B | Second op-amp inverting input; matched pair with Pin 5 |
| 7 | Output, Amp B | Independent output stage; no internal crosstalk with Amp A output |
| 8 | VCC+ | Positive supply rail; supports 3–16 V operation; decoupling required at pin |
| 9 | Inverting input, Amp C | Third op-amp inverting input; identical electrical characteristics to Pins 1 & 6 |
| 10 | Non-inverting input, Amp C | Third op-amp non-inverting input; part of matched quad topology |
| 11 | Output, Amp C | Third output; capable of driving 1 MΩ load with <50 mV low-level error |
| 12 | Non-inverting input, Amp D | Fourth op-amp non-inverting input; fully characterized across temperature |
| 13 | Inverting input, Amp D | Fourth op-amp inverting input; shares same offset and drift specs as others |
| 14 | Output, Amp D | Final output; supports same capacitive load stability as other channels |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 10 µA per amplifier - enables integration into energy-harvesting systems with µW budgets |
| Rail-to-ground output | Output reaches 0 V with 1.5 V headroom to VCC - eliminates need for negative rail in single-supply transducer interfaces |
| Capacitive-load stability | Guaranteed 45° phase margin with 100 pF load - allows direct connection to ADC input capacitors or long PCB traces |
| Low input current drift | ≤2 µV/°C offset drift - maintains calibration integrity over automotive or industrial temperature ranges |
| High channel separation | 120 dB - prevents crosstalk between simultaneously active amplifiers in multi-channel data acquisition |
Applications
| Portable Gas Sensor Interface | Industrial Thermocouple Amplifier |
|---|---|
|
Use Scenario: Battery-powered CO detector using electrochemical sensor with nA-level output current. IC Role / Device Role / Timing Role: Transimpedance amplifier converting sensor current to voltage; four channels used for sensor redundancy and reference compensation. Use Value: 10 µA/op current enables >5-year battery life; rail-to-ground output matches ADC input range without level-shifting. |
Use Scenario: 4-channel thermocouple measurement module in programmable logic controller (PLC) I/O card. IC Role / Device Role / Timing Role: Cold-junction compensation amplifier and low-noise signal conditioner for K-type thermocouples. Use Value: 300 pA max input bias current avoids voltage error across thermocouple's ~100 Ω source impedance; −40°C to +125°C rating covers extended industrial ambient. |
| Medical ECG Front-End Stage | Smart Meter Analog Signal Chain |
|
Use Scenario: Ultra-low-power wearable ECG patch requiring continuous monitoring for arrhythmia detection. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier buffer and high-pass filter driver in analog front-end. Use Value: 12 mV max input offset ensures baseline stability over time; 120 dB channel separation prevents lead-wire crosstalk between limb electrodes. |
Use Scenario: Three-phase electricity meter with anti-tampering diagnostics and harmonic analysis. IC Role / Device Role / Timing Role: Current transformer (CT) signal conditioning and shunt amplifier for neutral current sensing. Use Value: 65 dB CMRR rejects common-mode noise from switching power supplies; 0.1 MHz GBW supports accurate 50/60 Hz fundamental + 25th harmonic capture. |
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 |
|---|---|---|---|
| TLV2464IDR | Higher supply current (230 µA/op), wider GBW (6.4 MHz), lower offset (1.6 mV max) | Better for higher-speed sensor interfaces but unsuitable for µA-level power budgets | Select when speed outweighs battery life; requires redesign of power delivery network |
| LPV521MG/NOPB | Lower supply current (320 nA/op), lower GBW (6.2 kHz), single-channel only | Optimized for nano-power applications but lacks quad integration and rail-to-ground output | Select for extreme energy harvesting; requires four separate packages and additional board area |
Compared with TLV2464IDR and LPV521MG/NOPB, TS27L4IDT uniquely balances ultra-low power (10 µA), quad integration, rail-to-ground output, and guaranteed capacitive-load stability - making it the only choice for space-constrained, battery-operated, multi-channel analog systems requiring DC precision without speed overhead.
Availability
TS27L4IDT is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, smart utility meters, and battery-backed instrumentation requiring stable component supply across extended temperature ranges.
Supply support for TS27L4IDT 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, developed specifically for ultra-low-power signal conditioning in battery-operated and energy-constrained systems where DC accuracy and thermal stability are prioritized over bandwidth.
FAQ
What is the maximum recommended supply voltage for TS27L4IDT?
The absolute maximum supply voltage is 18 V, but the device is characterized and guaranteed for reliable operation between 3 V and 16 V. Operating above 16 V risks exceeding safe junction temperature limits and may degrade long-term reliability, especially at high ambient temperatures. Designers should maintain VCC+ ≤16 V with proper decoupling and thermal layout.
Does TS27L4IDT support true rail-to-rail input?
No - TS27L4IDT has a common-mode input voltage range of 0 V to VCC+ −1.5 V, meaning the inputs cannot accept signals within 1.5 V of the positive rail. However, its output is rail-to-ground (0 V) and can swing within 1.5 V of VCC+, providing partial rail-to-rail output capability essential for single-supply systems.
Can TS27L4IDT drive a 10 nF capacitive load stably?
No - the datasheet guarantees stability only up to 100 pF capacitive load with ≥45° phase margin. Driving 10 nF would cause severe peaking or oscillation. For larger loads, an external isolation resistor (e.g., 100 Ω) must be placed between the output and the capacitor to restore stability, as confirmed in Figure 12 of the datasheet.
Is TS27L4IDT qualified for automotive applications?
TS27L4IDT is rated for −40°C to +125°C operation and meets industrial reliability standards, but it is not AEC-Q100 qualified and is not marketed by ST for automotive use. ST explicitly states in the datasheet that non-automotive-grade parts carry no warranty for safety-critical vehicle systems; automotive designs require parts explicitly labeled "Automotive Grade".
TS27L4IDT 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:
- 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:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
TS27L4IDT FAQ
1.How can I place an order for TS27L4IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS27L4IDT 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 TS27L4IDT reliable?
The price and inventory of TS27L4IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS27L4IDT is usually 5 days.
3.What payment methods are accepted for TS27L4IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS27L4IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS27L4IDT?
TS27L4IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS27L4IDT 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 TS27L4IDT?
For technical support, including TS27L4IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS27L4IDT requirements.
6.How does Aetrix verify that TS27L4IDT is sourced from the original manufacturer or authorized distributors?
All TS27L4IDT 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 TS27L4IDT meets industry standards.
7.What is the process for return or replacement of TS27L4IDT?
All TS27L4IDT units undergo pre-shipment inspection (PSI). If there is an issue with TS27L4IDT, 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 TS27L4IDT part is unused and in its original packaging.
Return procedure for TS27L4IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS27L4IDT Tags
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