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STMicroelectronics TS914IN
- Part No.:
- TS914IN
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TS914IN.pdf
- Description:
- IC CMOS 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,663
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Product details
Overview
TS914IN from STMicroelectronics is a rail-to-rail input/output CMOS quad operational amplifier designed for precision analog signal conditioning in single-supply systems. It operates from 2.7 V to 16 V, delivers 200 μA/amplifier supply current at 3 V, achieves ±1 pA typical input bias current, and maintains 5 mV max input offset voltage (TS914A grade) - enabling high-impedance sensor interfacing in battery-powered instrumentation.
For engineers reviewing the TS914IN datasheet, TS914IN pinout, TS914IN application, or TS914IN equivalent, key selection criteria include rail-to-rail output swing under 600 Ω load, latch-up immunity, low-noise (30 nV/√Hz) performance at 1 kHz, and guaranteed operation across –40 °C to +125 °C industrial temperature range.
Technical Context
The TS914IN integrates four independent CMOS op-amps with common-mode input range extending 0.2 V beyond both supply rails (VCC– to VCC+), and output swing within 50 mV of rails into 10 kΩ - degrading to within 350 mV under 600 Ω load. Its internal current-limiting circuit fixes source/sink capability at 40 mA per amplifier at 3 V, ensuring robust short-circuit tolerance without external protection.
It features 1.4 MHz gain-bandwidth product at 10 V supply and 1 V/μs slew rate, with phase margin ≥30° into 10 kΩ and ≥40° into 600 Ω loads. Input resistance exceeds 10 TΩ, and channel separation remains 120 dB at 1 kHz - critical for multi-channel data acquisition where crosstalk must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 16 V - supports wide-input single-supply systems including 3.3 V, 5 V, and 12 V rails without level-shifting. |
| Input Bias Current | 1 pA typical - enables direct connection to high-impedance sources (e.g., pH electrodes, photodiodes) without significant error. |
| Input Offset Voltage | 5 mV max (TS914A grade) - ensures <0.5% gain error in unity-gain buffer configurations at 1 V output. |
| Output Swing (RL = 10 kΩ) | VCC– +50 mV / VCC+ –50 mV - delivers full dynamic range in ADC driver and reference buffer applications. |
| Gain-Bandwidth Product | 1.4 MHz at VCC = 10 V - sufficient for anti-aliasing filters up to ~100 kHz and sensor signal amplification with stable phase margin. |
| Channel Separation | 120 dB at 1 kHz - prevents inter-channel interference in 4-channel medical ECG front-ends or multi-sensor monitoring systems. |
| ESD Robustness | 1 kV HBM - withstands handling in standard manufacturing environments without additional protection circuitry. |
Pinout & Package
TS914IN is housed in a 14-pin SOIC (SO-14) plastic micropackage (ECOPACK® compliant), with 1.27 mm pitch, 8.65 mm × 3.9 mm body, and 1.45 mm nominal height - compatible with standard surface-mount reflow profiles and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 12 | Inverting Input (−) | Four independent negative inputs; high-impedance CMOS node accepting signals down to VCC– −0.2 V. |
| 2, 6, 10, 13 | Non-inverting Input (+) | Four independent positive inputs; rail-to-rail common-mode range supports ground-referenced sensors. |
| 3, 7, 8, 14 | Output | Four buffered outputs; capable of sourcing/sinking 40 mA while maintaining rail-to-rail swing into 600 Ω. |
| 4 | VCC+ | Positive supply terminal; accepts 2.7–16 V DC; decoupling capacitor required near pin for stability. |
| 11 | VCC− | Negative supply (or ground in single-supply); referenced for all input/output voltage ranges and bias currents. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Input range extends 0.2 V beyond supplies; output swings to within 50 mV of rails into 10 kΩ - maximizes signal headroom in low-voltage systems. |
| Latch-up immunity | Guaranteed per JEDEC JESD78 - eliminates risk of destructive latch-up during overvoltage transients or power sequencing faults. |
| Low-noise operation | 30 nV/√Hz input voltage noise at 1 kHz - preserves SNR in precision amplification stages preceding 16-bit+ ADCs. |
| Stable into capacitive loads | Maintains ≥30° phase margin with 100 pF load - allows direct driving of ADC input capacitance without isolation resistor. |
| Spice macromodel included | Validated behavioral model provided - enables accurate AC/DC/transient simulation of closed-loop gain, bandwidth, and settling behavior. |
Applications
| Portable Gas Sensor Interface | Industrial 4–20 mA Loop Receiver |
|---|---|
|
Use Scenario: Amplifying microamp-level current from electrochemical gas sensors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Quad configuration provides separate amplification, filtering, reference buffering, and output drive in one package. Use Value: 1 pA input bias current avoids loading high-impedance sensor elements; 200 μA/amplifier supply current extends battery life beyond 5 years. |
Use Scenario: Converting 4–20 mA loop current to 0–5 V for PLC analog input modules operating in harsh factory environments. IC Role / Device Role / Timing Role: One amplifier acts as precision current-to-voltage converter; others condition and buffer the signal before ADC sampling. Use Value: Rail-to-rail output ensures full 0–5 V span utilization; latch-up immunity prevents failure during ESD events on field wiring. |
| Medical ECG Front-End | Automotive Cabin Temperature Monitor |
|
Use Scenario: Amplifying low-amplitude, high-impedance biopotential signals from dry-electrode ECG leads. IC Role / Device Role / Timing Role: Four amplifiers implement instrumentation amp core, right-leg drive, lead-off detection, and filter stage. Use Value: 120 dB channel separation prevents cross-talk between limb leads; 30 nV/√Hz noise floor preserves diagnostic fidelity. |
Use Scenario: Signal conditioning for NTC thermistors in HVAC control units exposed to automotive temperature extremes. IC Role / Device Role / Timing Role: Precision voltage follower buffers thermistor divider; remaining amps drive LED indicators and interface logic. Use Value: Guaranteed operation from –40 °C to +125 °C matches AEC-Q200 ambient requirements; 5 mV max offset minimizes calibration drift. |
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 |
|---|---|---|---|
| TLV2464 (Texas Instruments) | Lower offset (2 mV max), higher quiescent current (550 μA/amp), no latch-up immunity guarantee. | Better DC accuracy but unsuitable for high-reliability industrial systems requiring latch-up immunity. | Select when ultra-low offset dominates over supply current and robustness requirements. |
| LMV324 (Texas Instruments) | Higher input bias current (100 nA), lower GBP (1 MHz), wider supply range (2.7–5.5 V only). | Cost-optimized for consumer-grade applications; lacks extended 16 V operation and 125 °C rating. | Select for cost-sensitive, non-automotive, room-temperature applications with moderate precision needs. |
Compared with TLV2464 and LMV324, TS914IN uniquely combines latch-up immunity, 16 V operation, and sub-picoamp bias current - making it the only choice for high-reliability, wide-supply, high-impedance sensor interfaces in extended temperature environments.
Availability
TS914IN is available at Aetrix Electronics and suitable for portable instrumentation, industrial process control, medical diagnostics, and automotive cabin electronics requiring stable component supply across long production lifecycles.
Supply support for TS914IN 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 analog, microcontroller, power, and MEMS products for industrial, automotive, and consumer markets.
The TS914 belongs to ST's precision analog op-amp product line, engineered specifically for rail-to-rail performance in space-constrained, low-power, high-reliability applications - emphasizing input impedance, output drive, and robustness over raw speed.
FAQ
What is the maximum capacitive load the TS914IN can drive while maintaining stability?
The TS914IN maintains ≥30° phase margin with 100 pF capacitive load at unity gain, as verified in Figure 8 and Figure 11 of the datasheet. Driving >100 pF requires an isolation resistor (typically 10–100 Ω) between output and load to prevent peaking or oscillation - especially critical when interfacing with ADC input capacitance or long PCB traces.
Does TS914IN support true single-supply operation with input signals at ground potential?
Yes. The common-mode input voltage range extends to VCC− −0.2 V, allowing inputs to reach 0 V (ground) in single-supply configurations where VCC− = 0 V. This enables direct interfacing with ground-referenced sensors and DAC outputs without level-shifting circuitry.
How does the output current limit behave under short-circuit conditions?
The TS914IN incorporates internal current limiting that caps source/sink current at approximately 40 mA per amplifier at 3 V supply, rising to 60 mA at 5 V and 10 V. This fixed limit prevents thermal runaway during sustained shorts and eliminates need for external current-limiting resistors in most applications.
Is the TS914IN pin-compatible with older DIP-14 versions of the same device?
No. The TS914IN uses SO-14 packaging exclusively; ST discontinued DIP-14 variants after Rev 7 of the datasheet (2009). While electrical functionality is identical, SO-14 has different pin spacing (1.27 mm vs. 2.54 mm), requiring PCB layout revision - no mechanical drop-in replacement exists.
TS914IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 1.4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 10 mV
- Current - Supply:
- 230µA
- Current - Output / Channel:
- 60 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-DIP
TS914IN FAQ
1.How can I place an order for TS914IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TS914IN 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 TS914IN reliable?
The price and inventory of TS914IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS914IN is usually 5 days.
3.What payment methods are accepted for TS914IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS914IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS914IN?
TS914IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS914IN 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 TS914IN?
For technical support, including TS914IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS914IN requirements.
6.How does Aetrix verify that TS914IN is sourced from the original manufacturer or authorized distributors?
All TS914IN 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 TS914IN meets industry standards.
7.What is the process for return or replacement of TS914IN?
All TS914IN units undergo pre-shipment inspection (PSI). If there is an issue with TS914IN, 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 TS914IN part is unused and in its original packaging.
Return procedure for TS914IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS914IN Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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