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STMicroelectronics TS914AIN
- Part No.:
- TS914AIN
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TS914AIN.pdf
- Description:
- IC CMOS 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,577
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Product details
Overview
TS914AIN from STMicroelectronics is a rail-to-rail input/output CMOS quad operational amplifier operating from 2.7 V to 16 V single or dual supply, delivering 5 mV max input offset voltage (A grade), 1 pA typical input bias current, and 200 μA/amplifier supply current at 3 V. It drives 600 Ω loads while maintaining output swing within 50 mV of rails and is used in precision sensor signal conditioning for industrial process controllers.
For engineers reviewing the TS914AIN datasheet, TS914AIN pinout, TS914AIN application, or TS914AIN equivalent, key selection criteria include rail-to-rail I/O capability, ultra-low input bias current for high-impedance sources, guaranteed performance over –40 °C to +125 °C, and SO-14 package compatibility with legacy analog layouts.
Technical Context
The TS914AIN employs a CMOS input stage enabling rail-to-rail common-mode input range (VCC– – 0.2 V to VCC+ + 0.2 V) and achieves rail-to-rail output swing limited only by internal output stage headroom: 50 mV from rails into 10 kΩ and 350 mV into 600 Ω. Its 1 pA typical input bias current supports high-Z transducer interfaces without significant error.
It features fixed 40 mA source/sink output current limiting per amplifier, 80 dB minimum supply voltage rejection ratio (2.7–5 V), and 70 dB minimum common-mode rejection ratio across full temperature range. Gain-bandwidth product scales from 0.8 MHz at 3 V to 1.4 MHz at 10 V, supporting stable unity-gain operation with ≥30° phase margin into 10 kΩ loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 16 V single/dual supply - enables direct interface with 3.3 V, 5 V, and 12 V systems without level-shifting. |
| Input Offset Voltage (A grade) | 5 mV max - ensures ≤0.5% gain error in unity-gain buffer configurations with 1 V output span. |
| Input Bias Current | 1 pA typical - permits use with >10 GΩ source impedances (e.g., piezoelectric sensors, pH electrodes) without measurable voltage error. |
| Output Drive Capability | 40 mA source/sink per amplifier - supports direct driving of 600 Ω loads (e.g., 4–20 mA loop receivers) without external buffers. |
| Gain-Bandwidth Product | 0.8 MHz at 3 V, 1.4 MHz at 10 V - provides sufficient bandwidth for DC–100 kHz sensor amplification with stable phase margin. |
| Common-Mode Rejection Ratio | 70 dB min (–40 °C to +125 °C) - rejects power-supply noise and ground shifts in noisy industrial environments. |
| Operating Temperature Range | –40 °C to +125 °C - qualified for extended industrial and automotive under-hood applications. |
Pinout & Package
TS914AIN is housed in a 14-pin SOIC (SO-14) plastic micropackage with standard 1.27 mm pitch, 8.6 mm × 4.0 mm body, and ECOPACK® environmental compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance CMOS node accepting differential input signals; referenced to VCC– for single-supply operation. |
| 2 | Non-inverting Input (Amplifier A) | Accepts rail-to-rail common-mode input down to VCC– – 0.2 V, enabling true single-supply sensor interfacing. |
| 3 | Output (Amplifier A) | Delivers rail-to-rail output swing (VCC– + 50 mV to VCC+ – 50 mV @ 10 kΩ) with internal short-circuit protection. |
| 4 | VCC+ | Positive supply terminal; accepts 2.7–16 V; decoupling capacitor required near pin for stability. |
| 5 | VCC– | Negative supply or ground reference; supports dual-supply (±2.7 V to ±8 V) or single-supply (0 V reference) operation. |
| 6 | Non-inverting Input (Amplifier B) | Independent input for second amplifier; shares same rail-to-rail CMOS architecture as Pin 2. |
| 7 | Inverting Input (Amplifier B) | Matches Pin 1 functionality; allows independent configuration of four op-amps on one die. |
| 8 | Output (Amplifier B) | Provides identical output drive and rail-to-rail behavior as Pin 3. |
| 9 | Inverting Input (Amplifier C) | Third amplifier input; fully isolated electrically from other sections per datasheet layout. |
| 10 | Non-inverting Input (Amplifier C) | Enables simultaneous multi-channel signal conditioning (e.g., 3-phase current sensing). |
| 11 | Output (Amplifier C) | Supports independent feedback networks; no crosstalk specified beyond 120 dB channel separation at 1 kHz. |
| 12 | Inverting Input (Amplifier D) | Fourth amplifier input; validated for operation up to +125 °C ambient per thermal resistance data (RthJA = 103 °C/W). |
| 13 | Non-inverting Input (Amplifier D) | Allows full utilization of quad topology for complex analog functions (e.g., instrumentation amp front-end + reference buffer). |
| 14 | Output (Amplifier D) | Final output capable of sourcing/sinking 40 mA; requires PCB trace width ≥0.3 mm for sustained 40 mA current. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in single-supply systems (e.g., 3.3 V microcontroller ADC reference buffers). |
| 1 pA typical input bias current | Eliminates need for guard rings or active guarding when interfacing with high-impedance electrochemical sensors. |
| Specified for 600 Ω load drive | Directly interfaces with industrial 4–20 mA receiver inputs without external transistor buffers or op-amp boost stages. |
| 200 μA/amplifier supply current at 3 V | Permits battery-powered portable instrumentation with >1-year runtime using two AA cells (3 V nominal). |
| Latch-up immunity | Guarantees robustness against transient overvoltage events on inputs/outputs in harsh EMI environments. |
Applications
| Industrial Sensor Signal Conditioning | Programmable Logic Controller (PLC) Analog Input Modules |
|---|---|
|
Use Scenario: Amplifying low-level outputs from RTD, thermocouple, or strain gauge bridges in factory automation cabinets. IC Role / Device Role / Timing Role: Quad op-amp configured as three instrumentation amplifier stages plus one reference buffer for ratiometric ADC excitation. Use Value: Rail-to-rail I/O preserves full 0–3.3 V ADC input range; 1 pA bias current prevents bridge imbalance errors in <1 nA excitation circuits. |
Use Scenario: Converting 4–20 mA current loop signals to 0–5 V voltage levels for microcontroller ADC sampling in modular PLC backplanes. IC Role / Device Role / Timing Role: Transimpedance amplifier with 250 Ω shunt resistor followed by rail-to-rail output buffer driving multiplexed ADC inputs. Use Value: 40 mA output drive directly sustains 20 mA loop current through 250 Ω while maintaining 5 V output swing into 10 kΩ ADC input impedance. |
| Automotive Cabin Temperature Control | Medical Patient Monitoring Front-End |
|
Use Scenario: Conditioning NTC thermistor signals in HVAC control units exposed to –40 °C to +85 °C ambient. IC Role / Device Role / Timing Role: Precision voltage follower and low-pass filter stage preceding SAR ADC in microcontroller-based climate controller. Use Value: 5 mV max Vos limits temperature measurement error to <0.5 °C over full range; –40 °C to +125 °C rating exceeds automotive cabin requirements. |
Use Scenario: Amplifying ECG electrode signals (0.5–5 mV, <100 Hz) in portable patient monitors with battery life constraints. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with matched resistors, followed by high-pass filter and gain stage for baseline stabilization. Use Value: 200 μA/amplifier supply current enables 4-channel analog front-end consuming <1 mA total, extending battery life in Class II medical devices. |
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 |
|---|---|---|---|
| TS914ID | Same silicon die, non-A grade: 10 mV max input offset voltage vs. 5 mV for TS914AIN. | Lower accuracy requirement; acceptable where <1% gain error is tolerable (e.g., non-critical threshold detection). | Select TS914ID for cost-sensitive industrial controls where full A-grade precision is unnecessary. |
| TS914AIDT | Identical electrical specs and SO-14 package; differs only in tape-and-reel packaging (vs. tube for TS914AIN). | No functional difference; selected for automated SMT assembly lines requiring reel-fed placement. | Choose TS914AIDT for high-volume production with pick-and-place equipment; TS914AIN suits prototyping and low-volume builds. |
Compared with TS914ID, TS914AIN delivers tighter input offset for precision measurement; compared with TS914AIDT, it offers identical performance in tube packaging for manual or semi-automated assembly-making TS914AIN optimal for design validation and small-batch industrial deployment.
Availability
TS914AIN is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, programmable logic controller (PLC) analog input modules, and automotive cabin temperature control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TS914AIN 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, mixed-signal, power, and microcontroller products for industrial, automotive, and consumer markets.
The TS914 series belongs to ST's precision analog portfolio, engineered specifically for rail-to-rail operation in single-supply industrial and automotive signal conditioning applications where low power, high input impedance, and wide temperature range are critical.
FAQ
What is the maximum capacitive load the TS914AIN can drive without instability?
The TS914AIN is characterized for stable operation with up to 100 pF capacitive load when driving 10 kΩ resistive loads, as verified in Figure 8 (gain/phase vs. frequency). Driving >100 pF requires isolation resistance (≥100 Ω) between amplifier output and capacitor to maintain ≥30° phase margin. No internal compensation is provided for purely capacitive loads.
Does the TS914AIN support dual-supply operation, and what are the voltage limits?
Yes, TS914AIN supports dual-supply operation with VCC+ and VCC– pins accepting symmetric or asymmetric supplies. Absolute maximum ratings allow ±18 V differential, but recommended operating range is ±2.7 V to ±8 V (total 5.4 V to 16 V), matching its 2.7–16 V single-supply specification. Common-mode input extends 0.2 V beyond both rails.
How does the 1 pA input bias current impact high-impedance sensor interfacing?
At 1 pA typical, the TS914AIN introduces ≤1 mV error across a 1 GΩ source impedance, making it suitable for pH electrodes, photodiode transimpedance stages, and piezoelectric sensors. Input resistance exceeds 10 TΩ, and input capacitance is only 1.5 pF, minimizing signal attenuation and phase shift at high frequencies.
Is the TS914AIN qualified for automotive applications, and what grade does it carry?
TS914AIN is rated for –40 °C to +125 °C operation and meets industrial reliability standards, but it is not AEC-Q100 qualified. For automotive use, ST offers the TS914AIYDT variant (AEC-Q100 Grade 2, –40 °C to +105 °C), which shares identical electrical specs but undergoes additional screening and traceability protocols required for automotive ECUs.
TS914AIN 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:
- 5 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
TS914AIN FAQ
1.How can I place an order for TS914AIN through Aetrix?
Please submit a Request for Quotation (RFQ) for TS914AIN 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 TS914AIN reliable?
The price and inventory of TS914AIN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS914AIN is usually 5 days.
3.What payment methods are accepted for TS914AIN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS914AIN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS914AIN?
TS914AIN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS914AIN 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 TS914AIN?
For technical support, including TS914AIN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS914AIN requirements.
6.How does Aetrix verify that TS914AIN is sourced from the original manufacturer or authorized distributors?
All TS914AIN 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 TS914AIN meets industry standards.
7.What is the process for return or replacement of TS914AIN?
All TS914AIN units undergo pre-shipment inspection (PSI). If there is an issue with TS914AIN, 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 TS914AIN part is unused and in its original packaging.
Return procedure for TS914AIN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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