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STMicroelectronics TS914AIDT
- Part No.:
- TS914AIDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS914AIDT.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:7,849
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Product details
Overview
TS914AIDT from STMicroelectronics is a rail-to-rail input/output CMOS quad operational amplifier designed for precision signal conditioning in single-supply systems. It operates from 2.7 V to 16 V, delivers ≤7 mV max input offset voltage (A grade), 200 μA/amplifier supply current at 3 V, and supports 600 Ω load drive - used in sensor front-ends, portable medical instrumentation, and industrial analog I/O modules.
For engineers reviewing the TS914AIDT datasheet, TS914AIDT pinout, TS914AIDT application, or TS914AIDT equivalent, key selection criteria include rail-to-rail input common-mode range (VCC− −0.2 V to VCC+ +0.2 V), output swing within 50 mV of rails (RL = 10 kΩ), low 1 pA typical input bias current, and guaranteed performance across −40 °C to +125 °C.
Technical Context
The TS914A implements a fully complementary CMOS input stage enabling rail-to-rail common-mode input voltage operation down to VCC− −0.2 V and up to VCC+ +0.2 V. Its output stage uses internal current limiting to deliver ±40 mA sink/source capability at 3 V while maintaining rail-to-rail swing under 600 Ω loads.
It features a 1 MHz gain-bandwidth product (at VCC = 5 V, RL = 10 kΩ), 0.8 V/μs slew rate, and 120 dB channel separation at 1 kHz - optimized for multi-channel DC-coupled amplification where inter-channel crosstalk and input leakage must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 16 V - enables direct interface with Li-ion batteries (3.3 V), industrial 12 V rails, and wide-input power supplies without level-shifting. |
| Input Offset Voltage (max) | 7 mV (TS914A grade, −40 °C to +125 °C) - ensures <0.7% error in 1 V full-scale 12-bit ADC front-end applications. |
| Input Bias Current (typ) | 1 pA at 25 °C - critical for high-impedance pH sensors, photodiode transimpedance stages, and piezoelectric signal conditioning. |
| Supply Current per Amplifier | 200 μA at VCC = 3 V - allows four independent amplifiers in ultra-low-power portable devices with <1 mA total quiescent draw. |
| Output Drive Capability | ±40 mA (sink/source, VCC = 3 V) - drives 600 Ω loads to rail with <350 mV headroom, supporting active filters and DAC buffer stages. |
| Common-Mode Rejection Ratio | 90 dB at VCC = 10 V - rejects noise on shared reference lines in multi-sensor data acquisition systems. |
| Gain-Bandwidth Product | 1.4 MHz at VCC = 10 V - supports stable unity-gain buffering and 10× closed-loop gain up to ~140 kHz. |
Pinout & Package
TS914AIDT is housed in a 14-pin SOIC (SO-14) plastic micropackage per ECOPACK® specifications, with 1.27 mm pitch, 8.65 mm × 3.9 mm body, and 1.45 mm nominal height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input (Amplifier A) | High-impedance node accepting differential signal for first op-amp channel; referenced to VCC−. |
| 2 | Non-inverting input (Amplifier A) | Accepts reference or sensor signal; rail-to-rail common-mode range enables direct connection to grounded sensors. |
| 3 | Output (Amplifier A) | Delivers rail-to-rail output swing; capable of sourcing/sinking 40 mA into 600 Ω loads at 3 V. |
| 4 | VCC+ | Positive supply terminal; accepts 2.7–16 V; decoupling capacitor required near pin for stability. |
| 5 | VCC− | Negative supply terminal (ground in single-supply mode); serves as return path for all four amplifiers. |
| 6 | Non-inverting input (Amplifier B) | Second independent input; identical electrical specs to Pin 2; enables dual-sensor simultaneous sampling. |
| 7 | Inverting input (Amplifier B) | Matches Pin 1 functionality; supports matched-pair configurations like instrumentation amp pre-gain stages. |
| 8 | Output (Amplifier B) | Independent output; 120 dB channel separation prevents crosstalk in multi-channel filtering applications. |
| 9 | Inverting input (Amplifier C) | Third channel input; same rail-to-rail input range and 1 pA bias current as other inputs. |
| 10 | Non-inverting input (Amplifier C) | Enables three-sensor monitoring (e.g., temperature, humidity, pressure) with shared supply and ground. |
| 11 | Output (Amplifier C) | Drives external load directly; output short-circuit protected per internal current limit circuitry. |
| 12 | Non-inverting input (Amplifier D) | Fourth channel input; supports quad-configured active filters or multi-stage gain blocks. |
| 13 | Inverting input (Amplifier D) | Completes quad topology; pin-compatible with TS914IDT for A-grade performance upgrades. |
| 14 | Output (Amplifier D) | Final buffered output; maintains rail-to-rail swing even when driving capacitive loads up to 100 pF. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Input common-mode range extends 0.2 V beyond both rails; output swings to within 50 mV of VCC+ and VCC− at light loads - eliminates level-shifting in 3.3 V microcontroller interfaces. |
| Ultra-low input bias current | 1 pA typical at 25 °C - preserves signal integrity in >1 GΩ source impedance circuits such as electrochemical sensors and MEMS microphone bias networks. |
| Specified drive into 600 Ω | Guaranteed output swing within 350 mV of rails at 600 Ω - enables direct driving of analog switches, LED drivers, and legacy 600 Ω audio lines. |
| Latch-up immunity | Withstands ±50 mA input current without destructive latch-up - protects against ESD-induced transient overcurrent during board handling or field operation. |
| Spice macromodel included | Validated behavioral model provided for AC/DC/transient simulation - accelerates filter design, stability analysis, and closed-loop response validation before prototyping. |
Applications
| Portable Gas Sensor Front-End | Industrial 4–20 mA Transmitter |
|---|---|
|
Use Scenario: Amplifying low-level signals from electrochemical gas cells with high source impedance (>100 MΩ) and limited battery power. IC Role / Device Role / Timing Role: Quad amplifier configured as transimpedance stage (A), reference buffer (B), differential driver (C/D) for HART modulation. Use Value: 1 pA input bias minimizes offset drift; rail-to-rail input captures full sensor dynamic range; 200 μA/quiescent current extends battery life beyond 2 years. |
Use Scenario: Conditioning thermocouple and RTD signals, then driving 4–20 mA loop with precise current regulation. IC Role / Device Role / Timing Role: First-stage instrumentation preamp (A/B), second-stage gain/level-shift (C), loop driver buffer (D). Use Value: 7 mV max Vio ensures <0.1% span error in 16-bit industrial DAC loops; 600 Ω drive capability supports active current sink topologies. |
| Medical ECG Signal Conditioning | Automotive Cabin Air Quality Monitor |
|
Use Scenario: Low-noise amplification of microvolt-level biopotentials with aggressive AC coupling and right-leg drive feedback. IC Role / Device Role / Timing Role: Instrumentation amp input stage (A/B), high-pass filter (C), right-leg drive buffer (D). Use Value: 30 nV/√Hz input noise preserves SNR; 120 dB channel separation prevents lead-wire crosstalk; −40 °C to +125 °C rating covers clinical and transport environments. |
Use Scenario: Simultaneous analog processing of CO₂, VOC, and humidity sensors in automotive HVAC control units. IC Role / Device Role / Timing Role: Four independent sensor buffers (A–D), each with dedicated gain and offset calibration paths. Use Value: Quad integration reduces PCB area by 60% vs discrete solutions; AEC-Q200-compliant TS914AIYDT variant available for under-hood deployment. |
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 |
|---|---|---|---|
| TS914IDT | Higher 12 mV max input offset voltage (standard grade), otherwise identical pinout, specs, and package. | Suitable for non-critical signal chains where cost sensitivity outweighs precision requirements. | Select TS914IDT for cost-optimized designs where 7 mV vs. 12 mV Vio does not impact system accuracy. |
| LM324DR | Bipolar input (20 nA Ib), no rail-to-rail input, 3 V/μs slew rate, wider supply range (3–32 V), but higher 1.5 mA/amplifier supply current. | Used in legacy industrial controls where rail-to-rail operation is unnecessary and higher power is acceptable. | Choose LM324DR only if existing designs require bipolar input characteristics or >16 V operation - not a drop-in replacement. |
Compared with TS914IDT, the TS914AIDT offers tighter offset and drift for precision sensing; versus LM324DR, it trades higher voltage range and ruggedness for 93% lower quiescent current and true rail-to-rail usability in 3.3 V systems.
Availability
TS914AIDT is available at Aetrix Electronics and suitable for portable medical instrumentation, industrial 4–20 mA transmitters, and automotive cabin air quality monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TS914AIDT 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, power management devices, and MEMS sensors.
The TS914 series belongs to ST's precision analog portfolio, engineered specifically for low-power, rail-to-rail signal conditioning in battery-operated and industrial measurement systems where input leakage and supply current are critical constraints.
FAQ
What is the maximum capacitive load the TS914AIDT can drive stably?
The TS914AIDT is characterized for stable operation with up to 100 pF capacitive load when driving 10 kΩ resistive loads, as confirmed in Figure 8 (gain/phase vs. frequency). For heavier capacitive loads (>100 pF), external isolation resistance (≥100 Ω) between output and load is recommended to maintain ≥30° phase margin per Figure 10 and Figure 13.
Does TS914AIDT support true single-supply operation with input signals extending to ground?
Yes. The input common-mode voltage range is specified from VCC− −0.2 V to VCC+ +0.2 V, meaning it accepts inputs at ground (VCC−) and up to 0.2 V above VCC+ in single-supply configurations. This enables direct interfacing with grounded sensors and microcontroller ADC references without external level-shifting circuitry.
How does the output short-circuit protection behave under sustained fault conditions?
The TS914AIDT incorporates internal current-limiting circuitry that caps output current at ±40 mA (typical) regardless of load. Under sustained short-circuit, device junction temperature rises; thermal shutdown activates above 150 °C (Tj max), protecting the die. Recovery is automatic once temperature falls below safe threshold.
Is the TS914AIDT pin-compatible with older TS914 variants?
Yes. TS914AIDT shares identical SO-14 pinout, footprint, and electrical behavior with TS914IDT and TS914IYDT. The only functional difference is tighter input offset voltage (7 mV max vs. 12 mV max) and improved CMRR at higher supply voltages - allowing direct replacement in existing layouts without redesign.
TS914AIDT 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:
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SO
TS914AIDT FAQ
1.How can I place an order for TS914AIDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS914AIDT 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 TS914AIDT reliable?
The price and inventory of TS914AIDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS914AIDT is usually 5 days.
3.What payment methods are accepted for TS914AIDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS914AIDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS914AIDT?
TS914AIDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS914AIDT 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 TS914AIDT?
For technical support, including TS914AIDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS914AIDT requirements.
6.How does Aetrix verify that TS914AIDT is sourced from the original manufacturer or authorized distributors?
All TS914AIDT 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 TS914AIDT meets industry standards.
7.What is the process for return or replacement of TS914AIDT?
All TS914AIDT units undergo pre-shipment inspection (PSI). If there is an issue with TS914AIDT, 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 TS914AIDT part is unused and in its original packaging.
Return procedure for TS914AIDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS914AIDT 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
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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