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STMicroelectronics TSV994AIYDT
- Part No.:
- TSV994AIYDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSV994AIYDT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,271
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Product details
Overview
TSV994AIYDT from STMicroelectronics is a quad rail-to-rail input/output operational amplifier optimized for low-voltage, low-power sensor interface and signal conditioning applications. It delivers 20 MHz gain-bandwidth at 820 µA per channel, supports stable operation at gains ≥ 4 or ≤ –3, operates from 2.5 V to 5.5 V, and features 1.5 mV max input offset voltage (A grade) and 1 pA typical input bias current.
For engineers reviewing the TSV994AIYDT datasheet, TSV994AIYDT pinout, TSV994AIYDT application, or TSV994AIYDT equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options for automotive-grade precision amplification in battery-constrained systems.
Technical Context
The TSV994AIYDT implements a high-speed, low-noise CMOS input stage enabling rail-to-rail operation across its full 2.5–5.5 V supply range. Its internal compensation requires minimum closed-loop gain of +4 or –3 for stability-making it unsuitable for unity-gain follower configurations without external stabilization.
It achieves 10 V/μs slew rate with 21 nV/√Hz input voltage noise at 10 kHz and maintains 75 dB CMRR and 86 dB SVR across temperature, supporting accurate DC-coupled sensing in noisy automotive environments where common-mode transients and supply ripple are present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 20 MHz - enables stable amplification of signals up to ~5 MHz at gain = 4, suitable for active filtering and fast sensor signal conditioning |
| Input offset voltage (max) | 1.5 mV - ensures ≤ 1.5 mV DC error in precision sensor front-ends (e.g., bridge-based strain gauges) without trimming |
| Supply current per channel | 820 µA typ. - allows four-channel operation under 3.3 mA total, critical for always-on battery-powered modules |
| Input bias current | 1 pA typ. - minimizes leakage-induced errors in high-impedance pH, photodiode, or piezoelectric sensor interfaces |
| Output drive capability | ±35 mA - supports direct driving of 600 Ω loads or 10 kΩ loads with <40 mV saturation, enabling robust analog output stages |
| Common-mode rejection | 75 dB min - rejects >99.7% of common-mode interference from motor drives or switching power supplies in automotive ECUs |
| Operating temperature | –40 °C to +125 °C - qualified per AEC-Q100 Grade 1, validated for under-hood and body-control module deployment |
Pinout & Package
TSV994AIYDT is supplied in SO14 package (14-pin small outline), with exposed pad not internally connected and configurable as ground or left floating. Pin functions are defined per DS4975 Rev 16, Figure 25 and Table 11.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input (Channel 1) | Accepts differential signal reference; high-impedance node requiring guard trace routing in precision layouts |
| 2 | Non-inverting input (Channel 1) | DC-biased sensor node input; 1 pA bias current enables use with >1 GΩ source impedances |
| 3 | Output (Channel 1) | Capable of ±35 mA sink/source into 600 Ω load; rail-to-rail swing reduces need for level-shifting circuitry |
| 4 | VCC– (GND) | Power return path; must be tied to low-impedance ground plane; decoupling capacitor required within 2 mm |
| 5 | Non-inverting input (Channel 2) | Independent high-Z input for second sensor channel; matched offset drift (2 µV/°C) enables ratiometric measurements |
| 6 | Inverting input (Channel 2) | Differential pair input for Channel 2; identical electrical characteristics to Pin 1 |
| 7 | Output (Channel 2) | Full rail-to-rail output swing; shares same thermal and layout constraints as Pin 3 |
| 8 | VCC+ | Positive supply rail (2.5–5.5 V); requires local 10 nF ceramic decoupling to minimize PSRR degradation |
| 9 | Inverting input (Channel 3) | Third independent op-amp input; electrically identical to Pins 1 and 6 |
| 10 | Non-inverting input (Channel 3) | Third high-Z input; supports multi-sensor monitoring (e.g., temperature, pressure, humidity) on single IC |
| 11 | Output (Channel 3) | Third rail-to-rail output; usable for buffered reference generation or active filter stage |
| 12 | Non-inverting input (Channel 4) | Fourth sensor interface node; enables full quad-channel analog front-end without external multiplexing |
| 13 | Inverting input (Channel 4) | Fourth differential input; matches performance of other channels for consistent system-level calibration |
| 14 | Output (Channel 4) | Final output channel; supports simultaneous signal conditioning for four independent analog sources |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization from 0 V to VCC, eliminating level-shifting components in 3.3 V or 5 V systems |
| Low input offset voltage (1.5 mV max) | Reduces zero-point calibration burden in medical instrumentation and industrial transmitters requiring <0.1% accuracy |
| Ultra-low input bias current (1 pA typ.) | Preserves signal integrity in high-impedance electrochemical and capacitive sensor circuits without guard ring complexity |
| Stable at gain ≥ 4 or ≤ –3 | Supports fixed-gain instrumentation amplifier topologies and inverting active filters without external compensation networks |
| AEC-Q100 Grade 1 qualification | Validated for automotive under-hood applications including engine control, battery management, and ADAS sensor fusion modules |
Applications
| Automotive Battery Monitoring | Portable Medical ECG Front-End |
|---|---|
Use Scenario: Real-time voltage and current sensing across 12 V lead-acid or 48 V Li-ion battery packs in start-stop and mild-hybrid vehicles. IC Role / Device Role / Timing Role: Quad op-amp performs simultaneous differential sensing of cell voltages, shunt-based current measurement, temperature compensation, and reference buffering. Use Value: 1.5 mV offset and 75 dB CMRR reject alternator ripple and ignition noise; rail-to-rail output drives ADC inputs directly at 3.3 V logic levels. |
Use Scenario: Low-noise amplification of microvolt-level biopotential signals from dry-electrode ECG patches in wearable monitors. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier core (using two channels), high-pass filter, right-leg drive buffer, and lead-off detection comparator input. Use Value: 1 pA input bias prevents electrode polarization; 21 nV/√Hz noise preserves QRS complex fidelity; 20 MHz GBP supports >100 Hz bandwidth with gain = 100. |
| Industrial Pressure Transmitter | Smart Home CO Sensor Signal Chain |
Use Scenario: Analog signal conditioning for piezoresistive pressure sensors in HVAC and process control transmitters operating at 4–20 mA loop or digital output. IC Role / Device Role / Timing Role: Bridge excitation buffer, differential amplifier for mV-level output, temperature compensation integrator, and 4–20 mA driver interface. Use Value: Matched offset drift (2 µV/°C) enables one-point calibration over –40 °C to +85 °C; 820 µA/channel allows loop-powered design with <4 mA total quiescent draw. |
Use Scenario: Signal amplification and filtering for electrochemical CO gas sensors in battery-operated residential detectors with 10-year shelf life. IC Role / Device Role / Timing Role: Transimpedance amplifier for nanoamp-level sensor current, low-pass filter, reference voltage buffer, and ADC driver. Use Value: 1 pA bias current avoids sensor polarization drift; rail-to-rail output maximizes SNR into 12-bit SAR ADC; 820 µA/channel extends battery life beyond 5 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSV994IDT | Standard grade (7.5 mV max Vio vs. 1.5 mV), non-automotive qualification | Lacks AEC-Q100 validation; unsuitable for automotive safety-critical modules | Select when cost sensitivity outweighs offset accuracy and automotive compliance requirements |
| TSV914AIYDT | 8 MHz GBP (vs. 20 MHz), lower supply current (600 µA), same A grade and AEC-Q100 rating | Better suited for DC-coupled, low-bandwidth applications like thermistor conditioning or slow-scan sensors | Choose when bandwidth >10 MHz is unnecessary and ultra-low power (<2.4 mA total) is mandatory |
Compared with TSV994IDT, TSV994AIYDT adds automotive qualification and tighter offset spec at higher cost; compared with TSV914AIYDT, it trades 40% higher supply current for 2.5× bandwidth-critical for active filtering and fast transient response in sensor interfaces.
Availability
TSV994AIYDT is available at Aetrix Electronics and suitable for automotive battery management, portable medical devices, industrial pressure transmitters, and smart home gas detection systems requiring stable component supply with AEC-Q100 compliance and long-term production continuity.
Supply support for TSV994AIYDT 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 sensor solutions for automotive, industrial, and consumer markets.
The TSV99x family was developed specifically for high-accuracy, low-power analog signal conditioning in space- and energy-constrained applications-including automotive ECUs, portable diagnostics, and battery-operated IoT endpoints-where rail-to-rail operation and AEC-Q100 reliability are essential.
FAQ
Is TSV994AIYDT unity-gain stable?
No. The TSV994AIYDT is internally compensated for minimum closed-loop gain of +4 (non-inverting) or –3 (inverting). Using it in unity-gain follower configuration without external compensation-such as a series resistor at the output or feedback capacitor-will cause instability and oscillation, as confirmed in Section 5.1 of DS4975 Rev 16.
What is the function of the exposed pad on the SO14 package?
The exposed pad on the TSV994AIYDT's SO14 package is not internally connected to any die node. Per DS4975 Rev 16, page 23, it may be soldered to PCB ground for improved thermal dissipation or left floating-no electrical connection is required or recommended.
Can TSV994AIYDT drive capacitive loads directly?
It can drive moderate capacitive loads (≤100 pF) with proper layout, but larger loads require stabilization. Section 5.1 specifies that for follower use with capacitive loads, an in-series output resistor (value dependent on load capacitance, per Figure 16) must be added; alternatively, a feedback capacitor reduces peaking in inverting configurations.
How does the A grade differ from standard grade in TSV994 variants?
The "A" suffix denotes tighter input offset voltage specification: 1.5 mV maximum at 25 °C (vs. 7.5 mV for standard grade), with guaranteed 3 mV max over full temperature range (–40 °C to +125 °C). This enables higher-accuracy DC measurements without factory calibration in automotive and medical applications.
TSV994AIYDT 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:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 20 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 820µA (x4 Channels)
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
TSV994AIYDT FAQ
1.How can I place an order for TSV994AIYDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSV994AIYDT 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 TSV994AIYDT reliable?
The price and inventory of TSV994AIYDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV994AIYDT is usually 5 days.
3.What payment methods are accepted for TSV994AIYDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV994AIYDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSV994AIYDT?
TSV994AIYDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSV994AIYDT 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 TSV994AIYDT?
For technical support, including TSV994AIYDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV994AIYDT requirements.
6.How does Aetrix verify that TSV994AIYDT is sourced from the original manufacturer or authorized distributors?
All TSV994AIYDT 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 TSV994AIYDT meets industry standards.
7.What is the process for return or replacement of TSV994AIYDT?
All TSV994AIYDT units undergo pre-shipment inspection (PSI). If there is an issue with TSV994AIYDT, 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 TSV994AIYDT part is unused and in its original packaging.
Return procedure for TSV994AIYDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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