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STMicroelectronics TSV994AIPT
- Part No.:
- TSV994AIPT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TSV994AIPT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,396
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Product details
Overview
TSV994AIPT from STMicroelectronics is a quad rail-to-rail input/output operational amplifier with A-grade precision (max 1.5 mV input offset voltage), 20 MHz gain-bandwidth, and 820 µA typical supply current per channel. It operates from 2.5 V to 5.5 V and delivers ±35 mA output drive into resistive loads - optimized for low-power sensor interfaces and battery-powered signal conditioning in automotive and medical instrumentation.
For engineers reviewing the TSV994AIPT datasheet, TSV994AIPT pinout, TSV994AIPT application, or TSV994AIPT equivalent, key selection criteria include its minimum stable gain requirement (≥4 or ≤−3), ultra-low 1 pA input bias current, rail-to-rail swing at 5 V, 21 nV/√Hz input noise at 10 kHz, and TSSOP-14 package compatibility with high-density PCB layouts.
Technical Context
The TSV994AIPT implements a voltage-feedback op-amp architecture with internal compensation tailored for non-unity-gain stability: it requires ≥4 V/V in non-inverting or ≤−3 V/V in inverting configurations to maintain ≥45° phase margin with 100 pF capacitive load. Its input stage uses complementary bipolar transistors enabling rail-to-rail common-mode range (VCC− −0.1 V to VCC+ +0.1 V) and 1 pA typ. input bias current.
Output stage delivers symmetrical sourcing/sinking capability (35 mA typ.) across full temperature range (−40 °C to +125 °C), with VOH/VOL specified down to 15 mV at 10 kΩ load. Supply rejection exceeds 70 dB (2.5–5 V), and CMRR reaches 82 dB at 5 V, supporting precision DC-coupled amplification in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 20 MHz - enables stable closed-loop operation up to ~5 MHz at G = 4, suitable for anti-aliasing filters and active sensor front-ends. |
| Input offset voltage (max) | 1.5 mV - A-grade precision ensures <0.03% error in 50 mV full-scale medical sensor outputs without trimming. |
| Supply current per channel | 820 µA typ. - allows four-channel operation under 3.3 mA total, critical for multi-sensor nodes powered by coin cells. |
| Input bias current | 1 pA typ. - minimizes voltage error across high-impedance pH or photodiode sources (>1 GΩ). |
| Output drive capability | ±35 mA - drives 100 Ω loads directly, eliminating need for external buffer stages in analog output modules. |
| Common-mode input range | VCC− −0.1 V to VCC+ +0.1 V - supports single-supply operation with inputs extending beyond rails, simplifying level-shifting circuits. |
| Input voltage noise | 21 nV/√Hz at 10 kHz - low enough for 16-bit SAR ADC driver applications with <1 LSB noise contribution. |
Pinout & Package
TSSOP-14 package (3.0 mm × 4.4 mm × 1.2 mm height), moisture sensitivity level 3 per JEDEC J-STD-020-C, with exposed pad electrically unconnected and recommended to be grounded or left floating per layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input (Channel 1) | High-impedance node accepting feedback signals; sensitive to PCB leakage and EMI coupling. |
| 2 | Non-inverting input (Channel 1) | Accepts reference or sensor signal; 1 pA bias current enables direct connection to high-Z sources. |
| 3 | Output (Channel 1) | Capable of ±35 mA drive; requires local 10 nF decoupling on VCC pins to prevent oscillation. |
| 4 | VCC− (GND) | Power return path; must be tied to low-impedance ground plane to maintain CMRR and PSRR performance. |
| 5 | Inverting input (Channel 2) | Independent input for second channel; shares same bias current spec as Pin 1. |
| 6 | Non-inverting input (Channel 2) | Electrically isolated from Channel 1 inputs; supports dual-sensor differential measurement. |
| 7 | Output (Channel 2) | Full rail-to-rail swing; compatible with 100 pF capacitive loads only when configured for G ≥ 4. |
| 8 | VCC+ | Positive supply (2.5–5.5 V); requires 10 nF ceramic capacitor placed within 2 mm of pin per layout rules. |
| 9 | Inverting input (Channel 3) | Third independent amplifier input; identical specs to Pins 1 and 5. |
| 10 | Non-inverting input (Channel 3) | Supports three-channel simultaneous acquisition without crosstalk degradation. |
| 11 | Output (Channel 3) | Drives loads up to 600 Ω while maintaining 15 mV saturation voltage at full temperature range. |
| 12 | Inverting input (Channel 4) | Fourth channel input; validated for −40 °C to +125 °C operation per AEC-Q100 automotive qualification. |
| 13 | Non-inverting input (Channel 4) | Enables quad-channel sensor interface with matched offset drift (2 µV/°C) across all channels. |
| 14 | Output (Channel 4) | Delivers 35 mA sink/source at 125 °C ambient, verified via thermal resistance junction-to-case (32 °C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in single-supply 3.3 V systems, eliminating level-shifter ICs in portable medical devices. |
| Low input offset voltage (1.5 mV max) | A-grade specification reduces calibration overhead in factory-trimmed industrial transmitters and automotive pressure sensors. |
| Stable for gain ≥ 4 or ≤ −3 | Eliminates need for external compensation components in fixed-gain instrumentation amplifier stages, reducing BOM count. |
| Ultra-low input bias current (1 pA typ.) | Preserves signal integrity when interfacing with high-impedance piezoelectric accelerometers or electrochemical sensors. |
| 20 MHz bandwidth at low power | Provides 5× higher speed than comparable micropower op-amps (e.g., TSV914), enabling faster settling in data acquisition systems. |
Applications
| Portable ECG Monitor | Battery-Powered Gas Sensor |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in handheld cardiac monitors. IC Role / Device Role / Timing Role: Quad-channel instrumentation front-end providing simultaneous lead-I, II, III, and aVR amplification with matched DC specs. Use Value: 1.5 mV max offset ensures <0.5% baseline error over 50 mV ECG amplitude; rail-to-rail output drives 12-bit SAR ADC directly at 3.3 V. |
Use Scenario: Conditioning output from metal-oxide semiconductor (MOS) gas sensors requiring low-noise, low-drift amplification. IC Role / Device Role / Timing Role: Transimpedance amplifier and filter stage converting picoamp-level sensor current to voltage with minimal drift. Use Value: 1 pA input bias current prevents baseline shift in 100 MΩ feedback networks; 21 nV/√Hz noise preserves ppm-level gas concentration resolution. |
| Automotive Cabin Air Quality Module | Industrial Temperature Transmitter |
Use Scenario: Signal conditioning for NDIR CO₂ and VOC sensors in vehicle HVAC control units operating across −40 °C to +105 °C. IC Role / Device Role / Timing Role: Quad op-amp implementing sensor excitation, differential amplification, filtering, and output buffering. Use Value: AEC-Q100 qualified operation ensures reliability; 2 µV/°C offset drift maintains <1% error over full automotive temperature range. |
Use Scenario: Converting RTD or thermocouple signals to 4–20 mA loop outputs in hazardous-area process controllers. IC Role / Device Role / Timing Role: Precision gain stage and reference buffer in 3-wire RTD measurement with cold-junction compensation. Use Value: 820 µA/channel supply current enables full quad operation within 3.5 mA loop budget; 82 dB CMRR rejects common-mode noise from 50/60 Hz mains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSV914AIPT | 8 MHz GBP, unity-gain stable, 550 µA/channel supply current, 4.5 mV max offset (A grade) | Better suited for unity-gain buffers and lower-speed filtering where stability simplifies design | Select when gain = 1 is required and 20 MHz bandwidth is unnecessary - reduces power by 33% but sacrifices speed and precision |
| TSV774IPT | 2.5 MHz GBP, rail-to-rail I/O, 80 µA/channel, 3 mV max offset, −40 °C to +85 °C rating | Targeted at cost-sensitive consumer electronics with relaxed temp and precision requirements | Choose for non-automotive portable devices where 125 °C operation and sub-2 mV offset are not needed - cuts cost and power by >90% |
Compared with TSV914AIPT and TSV774IPT, the TSV994AIPT uniquely balances 20 MHz bandwidth, A-grade offset, and automotive temperature range in a quad configuration - making it irreplaceable in high-fidelity sensor fusion modules where speed, precision, and ruggedness coexist.
Availability
TSV994AIPT is available at Aetrix Electronics and suitable for automotive cabin air quality modules, portable medical diagnostics, industrial temperature transmitters, and battery-powered gas sensing systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TSV994AIPT 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 industrial, automotive, and consumer markets.
The TSV99x family was developed specifically for precision, low-voltage, low-power analog signal conditioning in space-constrained, battery-operated, and automotive-qualified applications - emphasizing rail-to-rail performance, stability, and robustness across −40 °C to +125 °C.
FAQ
Can TSV994AIPT be used in unity-gain follower configuration?
No - the TSV994AIPT is not unity-gain stable and requires minimum closed-loop gain of 4 (non-inverting) or −3 (inverting) to ensure ≥45° phase margin. Using it as a follower without external compensation causes peaking or oscillation, especially with capacitive loads. Stability can be restored by adding a 10–100 Ω series resistor at the output or a feedback capacitor, but these degrade bandwidth and accuracy.
What is the maximum capacitive load the TSV994AIPT can drive reliably?
At gain ≥ 4, the TSV994AIPT remains stable with up to 100 pF capacitive load per the datasheet's phase margin test conditions (Rf = 10 kΩ, RL = 2 kΩ). Driving larger loads (e.g., >200 pF) requires isolation via a series resistor or external compensation. Layout practices - including short traces, local 10 nF decoupling, and ground-plane integrity - are critical to avoid instability.
How does the TSV994AIPT's input bias current affect high-impedance sensor interfaces?
With 1 pA typical input bias current, the TSV994AIPT introduces <1 µV error across a 1 GΩ source impedance - negligible for most electrochemical, piezoelectric, or photodiode sensors. This enables direct connection without guard rings or bias-current cancellation networks, simplifying PCB layout and reducing component count in precision analog front-ends.
Is the exposed pad on the TSSOP-14 package electrically connected?
No - the exposed pad on the TSV994AIPT's TSSOP-14 package is not internally connected to any die node. Per STMicroelectronics' datasheet (DS4975 Rev 16, page 17), it may be soldered to ground for improved thermal dissipation or left floating; neither choice affects electrical performance, but grounding enhances thermal resistance by ~10 °C/W in typical board layouts.
TSV994AIPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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-TSSOP
TSV994AIPT FAQ
1.How can I place an order for TSV994AIPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSV994AIPT 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 TSV994AIPT reliable?
The price and inventory of TSV994AIPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV994AIPT is usually 5 days.
3.What payment methods are accepted for TSV994AIPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV994AIPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSV994AIPT?
TSV994AIPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSV994AIPT 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 TSV994AIPT?
For technical support, including TSV994AIPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV994AIPT requirements.
6.How does Aetrix verify that TSV994AIPT is sourced from the original manufacturer or authorized distributors?
All TSV994AIPT 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 TSV994AIPT meets industry standards.
7.What is the process for return or replacement of TSV994AIPT?
All TSV994AIPT units undergo pre-shipment inspection (PSI). If there is an issue with TSV994AIPT, 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 TSV994AIPT part is unused and in its original packaging.
Return procedure for TSV994AIPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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