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STMicroelectronics TSV991AIYDT
- Part No.:
- TSV991AIYDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSV991AIYDT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,574
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Product details
Overview
TSV991AIYDT from STMicroelectronics is a precision rail-to-rail input/output operational amplifier optimized for automotive-grade applications. It delivers 20 MHz gain-bandwidth at 820 µA supply current, 1.5 mV max input offset voltage (A grade), ±1 pA typical input bias current, and operates from 2.5 V to 5.5 V - enabling high-accuracy signal conditioning in battery-constrained automotive sensor interfaces.
For engineers reviewing the TSV991AIYDT datasheet, TSV991AIYDT pinout, TSV991AIYDT application, or TSV991AIYDT equivalent, key selection criteria include its AEC-Q100 qualified SO8 package, minimum stable gain of 4 (or −3), 35 mA output drive, −40 °C to +125 °C operation, and ultra-low input bias current critical for high-impedance transducer interfacing.
Technical Context
The TSV991AIYDT employs a proprietary high-speed, low-power CMOS input stage delivering 20 MHz GBP while maintaining rail-to-rail input common-mode range (VCC− − 0.1 V to VCC+ + 0.1 V) and output swing within 15 mV of rails under 10 kΩ load. Its internal compensation requires minimum closed-loop gain of 4 (non-inverting) or −3 (inverting) for phase margin ≥45° with 100 pF capacitive load.
It features 75 dB typical CMRR at 25 °C, 86 dB SVRR, 21 nV/√Hz input voltage noise at 10 kHz, and 0.0014% THD+N at 1 kHz with 4.4 Vpp output - confirming suitability for precision analog front-ends where DC accuracy, AC fidelity, and thermal stability across automotive temperature extremes are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 20 MHz - supports stable amplification up to ~5 MHz at unity gain with external compensation, or full bandwidth at gain ≥4. |
| Input offset voltage (max) | 1.5 mV - enables sub-10 µV-level DC error correction in 12-bit+ systems without trimming. |
| Supply current (typ) | 820 µA - allows continuous operation in always-on automotive modules with <1 mW dissipation at 5 V. |
| Input bias current (typ) | 1 pA - preserves signal integrity when interfacing with >1 GΩ source impedances (e.g., piezoelectric sensors). |
| Output drive capability | ±35 mA - drives 600 Ω loads to rail with <150 mV saturation, supporting direct interface to ADC references or analog switches. |
| Operating voltage range | 2.5 V to 5.5 V - compatible with 3.3 V microcontroller I/O domains and legacy 5 V automotive subsystems. |
| Temperature range | −40 °C to +125 °C - qualified per AEC-Q100 Grade 1, ensuring reliability in engine bay and ADAS ECU environments. |
Pinout & Package
TSV991AIYDT is supplied in an SO8 (Small Outline Integrated Circuit, 150 mil width) package with exposed pad unconnected. Pin 1 is marked by a beveled corner or dot; the device is not pin-compatible with generic SO8 op-amps due to non-standard pin assignment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No connect | Internally unused; must remain floating or tied to ground per layout best practice to minimize parasitic coupling. |
| 2 (IN−) | Inverting input | Differential node accepting feedback network; high-impedance (1 pA bias) enables precision integrator or transimpedance configurations. |
| 3 (IN+) | Non-inverting input | Reference-sensing node; rail-to-rail common-mode range (−0.1 V to VCC+ + 0.1 V) supports single-supply sensor biasing. |
| 4 (VCC−) | Negative supply | Ground reference for single-supply operation; connects to system GND or negative rail in dual-supply setups. |
| 5 (OUT) | Amplifier output | Class AB output stage delivering ±35 mA; rail-to-rail swing ensures full dynamic range utilization in 12-bit ADC interfaces. |
| 6 (NC) | No connect | Unused terminal; leave unconnected to avoid unintended capacitance or leakage paths. |
| 7 (VCC+) | Positive supply | Accepts 2.5–5.5 V; decoupling capacitor (10 nF) required within 2 mm for stability under transient load conditions. |
| 8 (NC) | No connect | Internally isolated; PCB footprint may omit this pad to reduce solder void risk without performance impact. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal acquisition from 0 V to VCC in single-supply systems, eliminating level-shifting circuitry in battery-powered ECUs. |
| AEC-Q100 qualified (Grade 1) | Validated for automotive under-hood operation including thermal cycling, humidity, and vibration - reduces qualification effort for Tier 1 suppliers. |
| Stable at gain ≥4 or ≤−3 | Allows use in high-gain sensor amplification (e.g., strain gauge bridges) without external compensation, while supporting inverting configurations down to −3× gain. |
| 20 MHz GBP at 820 µA | Delivers 10× higher bandwidth per µA than legacy automotive op-amps, enabling faster loop response in motor control current sensing. |
| ESD protection ≥5 kV HBM | Withstands handling and assembly ESD events without latch-up or parameter shift, improving manufacturing yield in high-volume automotive lines. |
Applications
| Automotive Cabin Temperature Sensor Interface | ADAS Camera Module Power Supply Monitor |
|---|---|
Use Scenario: Amplifying output of NTC thermistors in HVAC control units, operating continuously at 85 °C ambient. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with 1.5 mV offset and 1 pA bias, rejecting common-mode noise on long harness runs. Use Value: Maintains ±0.2 °C measurement accuracy over lifetime without calibration drift, meeting ISO 16750-4 thermal endurance requirements. | Use Scenario: Monitoring 12 V to 3.3 V DC-DC converter output in surround-view camera ECU, detecting undervoltage faults within 10 µs. IC Role / Device Role / Timing Role: High-speed comparator replacement with rail-to-rail input, configured as window detector with hysteresis. Use Value: 10 V/µs slew rate ensures fault detection latency <5 µs, preventing image corruption during power brownouts. |
| Electric Power Steering (EPS) Torque Sensor Signal Conditioning | Automotive Infotainment Microphone Pre-amplifier |
Use Scenario: Amplifying Wheatstone bridge output from magnetostrictive torque sensors, subject to EMI from nearby motor drivers. IC Role / Device Role / Timing Role: Low-noise (21 nV/√Hz), high-CMRR (75 dB) instrumentation amplifier front-end with 20 MHz bandwidth. Use Value: Rejects 100 kHz switching noise from EPS inverter while preserving 10-bit torque resolution, satisfying ASIL-B functional safety constraints. | Use Scenario: Boosting MEMS microphone output in head unit, requiring low THD+N (<0.01%) and wide dynamic range. IC Role / Device Role / Timing Role: Low-distortion (0.0014% THD+N), rail-to-rail output buffer driving 10 kΩ ADC input with 2.8 Vpp swing. Use Value: Enables 95 dB SNR audio capture without clipping, meeting OEM acoustic quality benchmarks for voice recognition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision automotive op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSV911AIYDT | 8 MHz GBP, 550 µA supply current, same AEC-Q100 SO8 package and pinout. | Better suited for lower-bandwidth, ultra-low-power applications (e.g., tire pressure sensors) where 20 MHz is unnecessary. | Select when power budget is tighter than bandwidth requirement; retains identical layout and qualification documentation. |
| LM7332QMA/NOPB | 22 MHz GBP, 2.1 mA supply current, dual-channel, wider 2.7–36 V range, SO8 package. | Supports higher-voltage automotive subsystems (e.g., battery monitoring) but consumes >2.5× more current. | Choose only if dual-channel operation or >5.5 V operation is required; otherwise, TSV991AIYDT offers superior power efficiency. |
Compared with TSV911AIYDT, the TSV991AIYDT trades 2.5× higher quiescent current for 2.5× greater bandwidth and improved noise performance; versus LM7332QMA/NOPB, it reduces supply current by 61% at the cost of narrower voltage range and single-channel topology - making it optimal for compact, battery-sensitive, high-fidelity automotive analog nodes.
Availability
TSV991AIYDT is available at Aetrix Electronics and suitable for automotive cabin control, ADAS sensor fusion, electric power steering, and infotainment audio subsystems requiring stable component supply across extended temperature and lifecycle demands.
Supply support for TSV991AIYDT 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 management ICs, sensors, and analog components for automotive, industrial, and consumer markets.
The TSV99x family was developed specifically for AEC-Q100-compliant automotive signal conditioning - emphasizing ultra-low input bias current, rail-to-rail operation at low voltage, and robustness against EMI and thermal stress in harsh vehicle environments.
FAQ
Is TSV991AIYDT unity-gain stable?
No. The TSV991AIYDT is internally compensated for minimum closed-loop gain of 4 (non-inverting) or −3 (inverting). Attempting unity-gain operation causes peaking and potential oscillation. Stability can be achieved in follower configurations only with an external series resistor (≥10 Ω) at the output, verified via bench testing and simulation using ST's macromodel.
What is the function of pins 1, 6, and 8 on the SO8 package?
Pins 1, 6, and 8 are no-connect (NC) terminals. They are not bonded internally and serve no electrical function. ST recommends leaving them unconnected; grounding them is acceptable but provides no benefit and may increase parasitic capacitance. Do not route signals or power to these pins.
Does the exposed pad on the SO8 package require connection?
The SO8 package used for TSV991AIYDT does not feature an exposed thermal pad - unlike DFN variants. The standard SO8 outline has no thermal pad; therefore, no thermal vias or solder connections are needed. Thermal performance relies solely on lead-frame conduction through pins 4 (VCC−) and 7 (VCC+).
Can TSV991AIYDT drive a 100 pF capacitive load directly?
Yes, but only when configured with gain ≥4 (non-inverting) or ≤−3 (inverting). At those gains, the device maintains ≥45° phase margin with 100 pF load per datasheet Figure 8–9. Driving 100 pF in unity gain will cause instability; for such cases, add a 10–47 Ω series resistor at the output and verify stability empirically.
TSV991AIYDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 20 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- -
- Current - Supply:
- 820µA
- 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:
- 8-SOIC
TSV991AIYDT FAQ
1.How can I place an order for TSV991AIYDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSV991AIYDT 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 TSV991AIYDT reliable?
The price and inventory of TSV991AIYDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV991AIYDT is usually 5 days.
3.What payment methods are accepted for TSV991AIYDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV991AIYDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSV991AIYDT?
TSV991AIYDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSV991AIYDT 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 TSV991AIYDT?
For technical support, including TSV991AIYDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV991AIYDT requirements.
6.How does Aetrix verify that TSV991AIYDT is sourced from the original manufacturer or authorized distributors?
All TSV991AIYDT 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 TSV991AIYDT meets industry standards.
7.What is the process for return or replacement of TSV991AIYDT?
All TSV991AIYDT units undergo pre-shipment inspection (PSI). If there is an issue with TSV991AIYDT, 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 TSV991AIYDT part is unused and in its original packaging.
Return procedure for TSV991AIYDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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