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STMicroelectronics TS914IDT
- Part No.:
- TS914IDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS914IDT.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:8,250
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Product details
Overview
TS914IDT 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 200 μA/amplifier supply current at 3 V, 5 mV max input offset voltage (A grade), and 0.8 MHz gain-bandwidth product with 10 kΩ load - used in precision sensor signal conditioning and low-power industrial analog front-ends.
For engineers reviewing the TS914IDT datasheet, TS914IDT pinout, TS914IDT application, or TS914IDT equivalent, this page provides verified electrical specifications, SO-14 package terminal mapping, real-world use cases for rail-to-rail operation under 600 Ω loading, and validated alternative op-amps with documented performance trade-offs.
Technical Context
The TS914IDT integrates four independent CMOS amplifiers sharing common supply rails, each featuring rail-to-rail input stage (VICM = VCC− − 0.2 V to VCC+ + 0.2 V) and output swing within 50 mV of rails at 10 kΩ load. Its input bias current is 1 pA typical, enabling high-impedance source interfacing without significant error.
Internal short-circuit protection limits output current to ±40 mA (at 3 V) and ±60 mA (at 5–10 V), while phase margin remains ≥30° across supply voltages (3–16 V) and loads (100–10 kΩ), ensuring stable unity-gain operation without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 16 V - supports battery-powered and industrial 12 V systems without level-shifting. |
| Input Offset Voltage (max) | 5 mV (TS914A grade) - enables accurate DC-coupled amplification of mV-level sensor outputs. |
| Supply Current per Amplifier | 200 μA at VCC = 3 V - allows four-channel operation under 1 mA total, critical for portable instrumentation. |
| Gain-Bandwidth Product | 0.8 MHz at VCC = 3 V, RL = 10 kΩ - sufficient for anti-aliasing filters and slow-control loops up to ~80 kHz. |
| Output Voltage Swing | VCC− + 50 mV / VCC+ − 50 mV (RL = 10 kΩ) - preserves dynamic range in low-voltage ADC interfaces. |
| Input Bias Current (typ) | 1 pA - permits direct connection to piezoelectric sensors or high-value feedback networks without leakage-induced drift. |
| Common-Mode Rejection Ratio | 90 dB at VCC = 10 V - rejects power-supply noise in single-supply transducer amplifiers. |
Pinout & Package
TS914IDT is housed in a 14-pin SO (Small Outline) plastic micropackage (SO-14), compliant with ECOPACK® environmental standards and rated for −40 °C to +125 °C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input of amplifier A | Accepts differential signal referenced to non-inverting input; rail-to-rail common-mode range supports ground-referenced inputs. |
| 2 | Non-inverting input of amplifier A | High-impedance CMOS node (RIN >10 TΩ); minimal loading on resistive dividers or capacitive sensors. |
| 3 | Output of amplifier A | Delivers rail-to-rail swing; capable of sourcing/sinking 40 mA (3 V) with internal current limiting. |
| 4 | Positive supply (VCC+) | Primary power rail; accepts 2.7–16 V; decoupling required near pin for stability at high frequencies. |
| 5 | Negative supply (VCC−) | Ground or negative rail; common reference for all four amplifiers; must be connected even in single-supply mode. |
| 6 | Inverting input of amplifier B | Independent channel input; electrically isolated from other amplifiers except shared supply pins. |
| 7 | Non-inverting input of amplifier B | Matches pin 2 characteristics; enables matched dual-channel configurations like instrumentation amps. |
| 8 | Output of amplifier B | Same drive capability as pin 3; supports parallel output stages or independent signal paths. |
| 9 | Inverting input of amplifier C | Third channel input; identical electrical specs to pins 1 and 6; suitable for multi-stage filtering. |
| 10 | Non-inverting input of amplifier C | Enables three-channel simultaneous acquisition (e.g., RGB sensor conditioning) with matched offsets. |
| 11 | Output of amplifier C | Provides third independent output; thermal coupling with adjacent channels minimized by SO-14 layout. |
| 12 | Inverting input of amplifier D | Fourth channel input; completes quad configuration for full analog subsystem integration. |
| 13 | Non-inverting input of amplifier D | Supports four-channel active filters or multi-sensor biasing networks with consistent input behavior. |
| 14 | Output of amplifier D | Final output; shares same short-circuit protection and slew rate (0.5 V/μs at 3 V) as other outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of supply voltage headroom in 3.3 V and 5 V systems, eliminating need for level-shifting circuitry. |
| 1 pA typical input bias current | Permits direct interface with high-impedance sources (e.g., pH electrodes, photodiodes) without significant offset drift. |
| Specified for 600 Ω load | Guarantees output swing and stability into low-impedance loads such as transmission lines or relay drivers. |
| Latch-up immunity | Ensures robustness against transient overvoltage events on inputs or supplies without destructive failure. |
| SPICE macromodel included | Validated behavioral model supports pre-layout simulation of closed-loop response, noise, and settling time. |
Applications
| Industrial Sensor Signal Conditioning | Portable Medical Instrumentation |
|---|---|
|
Use Scenario: Amplifying low-level thermocouple or strain gauge outputs in factory-floor PLC analog input modules. IC Role / Device Role / Timing Role: Quad amplifier configures two channels as precision instrumentation amp (pins 1–3, 5–8), one as reference buffer (pins 9–11), and one as anti-alias filter driver (pins 12–14). Use Value: Rail-to-rail output swing maximizes ADC input range; 5 mV max VIO ensures ≤0.1% gain error in 5 V full-scale systems. |
Use Scenario: Front-end signal chain in handheld ECG monitors requiring ultra-low power and high common-mode rejection. IC Role / Device Role / Timing Role: One amplifier serves as right-leg drive (RLD) buffer, two as lead-I/lead-II differential amplifiers, and one as notch filter integrator. Use Value: 1 pA IIB prevents electrode polarization errors; 200 μA/amplifier enables >100 hr battery life with coin-cell supply. |
| Automotive Cabin Environment Sensors | Smart Building HVAC Control |
|
Use Scenario: Signal conditioning for CO₂, humidity, and ambient light sensors in automotive cabin air quality modules. IC Role / Device Role / Timing Role: Four independent amplifiers condition each sensor's analog output, with shared VCC/VSS reducing component count. Use Value: −40 °C to +125 °C rating meets AEC-Q100 Grade 2 requirements; 90 dB CMRR rejects ignition noise in 12 V systems. |
Use Scenario: Multi-sensor fusion node aggregating temperature, pressure, and airflow data in commercial HVAC controllers. IC Role / Device Role / Timing Role: Each amplifier conditions one sensor type (RTD, piezoresistive, anemometer), with rail-to-rail output feeding SAR ADCs. Use Value: 0.8 MHz GBP supports 100 Hz sensor bandwidth with 10× stability margin; SO-14 footprint simplifies 4-layer PCB routing. |
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 |
|---|---|---|---|
| TLV2464IDR | Higher supply current (550 μA/amp at 3 V), lower VIO (2 mV max), no 600 Ω load spec | Better DC accuracy but unsuitable for battery-powered designs requiring sub-1 mA total quiescent current | Select when VIO < 2 mV is mandatory and power budget allows ≥2.2 mA total |
| LMV324DT | Lower cost, wider temp range (−40 °C to +125 °C), but only rail-to-rail output (not input), 700 μA/amp at 3 V | Cannot interface directly with ground-referenced sensors without level-shifting; higher power limits portable use | Choose for cost-sensitive industrial controls where input common-mode range beyond rail is not required |
Compared with TLV2464IDR and LMV324DT, TS914IDT uniquely balances ultra-low input bias current (1 pA), rail-to-rail input/output, and sub-1 mA total quiescent current - making it optimal for high-impedance, low-power, wide-supply analog systems where both input and output headroom are constrained.
Availability
TS914IDT is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, portable medical instrumentation, and automotive cabin environment monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TS914IDT 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, power ICs, analog components, and MEMS sensors for industrial, automotive, and consumer markets.
The TS914 series belongs to ST's precision analog portfolio, engineered specifically for rail-to-rail performance in low-power, high-impedance sensor interface applications across harsh industrial and automotive environments.
FAQ
What is the maximum load capacitance the TS914IDT can drive without instability?
The TS914IDT is characterized with 100 pF load capacitance in gain-bandwidth and slew rate tests (e.g., Table 3, f = 100 kHz). Driving >100 pF requires external isolation resistor (≥100 Ω) in series with the output to maintain ≥30° phase margin, as confirmed in Figure 8–13 showing degraded phase margin at higher CL.
Does TS914IDT support true single-supply operation with input signals extending to ground?
Yes. The input common-mode range extends to VCC− − 0.2 V, allowing direct interface with ground-referenced sensors (e.g., thermistors, bridge outputs) when VCC− = 0 V. Output also swings to VCC− + 50 mV at 10 kΩ, preserving near-ground resolution.
How does the TS914IDT's 600 Ω load specification impact design compared to standard 10 kΩ-rated op-amps?
Guaranteed performance into 600 Ω means the device maintains rail-to-rail output swing, specified slew rate (0.5 V/μs), and phase margin down to this low impedance - enabling direct drive of relays, LEDs, or transmission lines without external buffers, unlike most general-purpose op-amps that degrade significantly below 2 kΩ.
Is the TS914IDT pin-compatible with older TS914 variants like TS914ID?
Yes. TS914IDT uses the same SO-14 package and identical pinout as TS914ID and TS914AID. The 'T' suffix denotes tape-and-reel packaging; electrical and thermal specifications are unchanged from the tube-packaged versions per Table 8 in the datasheet.
TS914IDT 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:
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SO
TS914IDT FAQ
1.How can I place an order for TS914IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS914IDT 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 TS914IDT reliable?
The price and inventory of TS914IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS914IDT is usually 5 days.
3.What payment methods are accepted for TS914IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS914IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS914IDT?
TS914IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS914IDT 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 TS914IDT?
For technical support, including TS914IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS914IDT requirements.
6.How does Aetrix verify that TS914IDT is sourced from the original manufacturer or authorized distributors?
All TS914IDT 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 TS914IDT meets industry standards.
7.What is the process for return or replacement of TS914IDT?
All TS914IDT units undergo pre-shipment inspection (PSI). If there is an issue with TS914IDT, 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 TS914IDT part is unused and in its original packaging.
Return procedure for TS914IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS914IDT Tags
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