Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

STMicroelectronics TSV994AIDT

Name: TSV994AIDT
Brand: STMicroelectronics
SKU: TSV994AIDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TSV994AIDT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: TSV994AIDT.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SO

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,267

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

TSV994AIDT from STMicroelectronics is a quad rail-to-rail input/output operational amplifier optimized for low-voltage, low-power applications. It delivers 20 MHz gain-bandwidth at 820 µA supply current per channel, supports 2.5 V to 5.5 V operation, features 1.5 mV max input offset voltage (A grade), and drives ±35 mA output current. It is used in battery-powered sensor signal conditioning circuits requiring precision, stability, and wide common-mode range.

For engineers reviewing the TSV994AIDT datasheet, TSV994AIDT pinout, TSV994AIDT application, or TSV994AIDT equivalent, key selection criteria include minimum stable gain (≥4 or ≤−3), ultra-low input bias current (1 pA typ.), rail-to-rail swing capability, thermal performance in SO14 (R_thJA = 103 °C/W), and compatibility with capacitive load driving via external compensation.

Technical Context

The TSV994AIDT employs a high-speed, low-power CMOS input stage enabling rail-to-rail input common-mode range (V_CC− − 0.1 V to V_CC+ + 0.1 V) and rail-to-rail output swing within 15–40 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 integrates ESD protection ≥5 kV HBM and operates across −40 °C to +125 °C. The device exhibits 2 μV/°C input offset drift, 21 nV/√Hz input voltage noise at 10 kHz, and 0.0014% THD+N at 1 kHz with 4.4 V_PP output into 2 kΩ - confirming suitability for precision analog front-ends in portable instrumentation.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain-bandwidth product	20 MHz - enables stable amplification up to ~5 MHz at gain = 4, supporting active filtering and sensor signal conditioning bandwidths.
Supply current per channel	820 µA typ. - allows four-channel operation at <3.3 mA total, critical for multi-sensor battery-powered systems.
Input offset voltage (A grade)	1.5 mV max. at 25 °C - ensures ≤3 mV error over full temperature range, suitable for 12-bit ADC interfacing without trimming.
Output drive capability	±35 mA - supports direct driving of 600 Ω loads or RC networks without external buffers in medical transducer interfaces.
Common-mode input range	V_CC− − 0.1 V to V_CC+ + 0.1 V - accommodates single-supply operation with ground-referenced sensors and rail-sensing configurations.
Stable gain configuration	≥4 (non-inverting) or ≤−3 (inverting) - mandates external feedback network design; unity-gain follower requires series output resistor for stability.
Input bias current	1 pA typ. - minimizes voltage error across high-impedance sources (e.g., pH electrodes, piezoelectric sensors).

Pinout & Package

TSV994AIDT is supplied in SO14 package (14-pin small outline integrated circuit), with exposed pad not internally connected and configurable as V_CC− or floating. Thermal resistance is R_thJA = 103 °C/W, supporting industrial ambient operation with minimal heatsinking.

Pin/Terminal	Circuit Role	Design Meaning
1 (OUT A)	Channel A output	Delivers rail-to-rail voltage swing; requires decoupling capacitor near V_CC+/V_CC− for stability with capacitive loads.
2 (IN− A)	Channel A inverting input	High-impedance node; sensitive to layout-induced leakage; must avoid contamination or long traces in high-Z sensor paths.
3 (IN+ A)	Channel A non-inverting input	Accepts common-mode signals down to V_CC− − 0.1 V; enables single-supply transducer biasing without level-shifting.
4 (V_CC−)	Negative supply rail	Ground reference for dual-supply use or system ground in single-supply; connects to exposed pad if used for thermal enhancement.
5 (IN+ B)	Channel B non-inverting input	Independent high-Z input for second sensor channel; shares same V_CC− and V_CC+ with other channels.
6 (IN− B)	Channel B inverting input	Configurable for differential or single-ended feedback; layout symmetry critical when used with IN+ B for matched performance.
7 (OUT B)	Channel B output	Capable of sourcing/sinking ±35 mA; may drive shared load with Channel A only if thermal limits permit (P_D ≤ 1.2 W).
8 (V_CC+)	Positive supply rail	Supplies all four op-amps; requires 10 nF ceramic decoupling capacitor placed ≤2 mm from pin per ST recommendation.
9 (OUT C)	Channel C output	Third independent output; identical AC/DC specs to OUT A/B; enables triple-signal processing (e.g., 3-axis accelerometer interface).
10 (IN− C)	Channel C inverting input	Matches IN− A/B electrical characteristics; supports cascaded gain stages with consistent offset and bias behavior.
11 (IN+ C)	Channel C non-inverting input	Enables rail-to-rail sensing on third channel; common-mode rejection remains ≥57 dB across −40 °C to +125 °C.
12 (V_CC−)	Negative supply rail (redundant)	Second V_CC− connection improves grounding robustness in noisy environments; must be tied to same net as Pin 4.
13 (IN+ D)	Channel D non-inverting input	Fourth high-Z input; usable for reference buffering or auxiliary signal monitoring without degrading primary channel performance.
14 (OUT D)	Channel D output	Full-output-drive capability; supports independent load switching; thermal derating required if all four outputs drive 600 Ω simultaneously.

Key Features

Feature	Design Value
Rail-to-rail input and output	Enables full dynamic range utilization in 2.5 V–5.5 V single-supply systems, eliminating level-shifting components in portable medical devices.
20 MHz gain-bandwidth at 820 µA	Provides >5× higher speed/power ratio than legacy micropower op-amps, allowing active anti-aliasing filters up to 100 kHz without compromising battery life.
1 pA typical input bias current	Reduces voltage error to <1 µV across 1 MΩ source impedance, essential for accurate measurement of electrochemical or photodiode sensors.
Low input offset voltage (1.5 mV max)	Ensures DC accuracy in closed-loop configurations without nulling circuitry, reducing BOM count and PCB area in compact wearable designs.
ESD protection ≥5 kV HBM	Meets IEC 61000-4-2 Level 3 requirements out-of-box, enabling direct integration into handheld test equipment without external TVS diodes.

Applications

Portable ECG Monitor

Battery-Powered Gas Sensor Interface

Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in a handheld ECG unit powered by two AA cells.

IC Role / Device Role / Timing Role: Quad-channel signal conditioning: Channels A/B form differential input stage; Channel C buffers reference voltage; Channel D drives ADC driver stage.

Use Value: Rail-to-rail input captures full electrode offset range; 1 pA bias current prevents baseline drift; 20 MHz GBW supports 1 kHz diagnostic bandwidth with margin.

Use Scenario: Conditioning output from metal-oxide semiconductor (MOS) gas sensors operating at 3.3 V with high output impedance (>100 kΩ).

IC Role / Device Role / Timing Role: Transimpedance amplifier (Channel A), temperature-compensated reference buffer (Channel B), filter stage (Channel C), and output driver (Channel D).

Use Value: Ultra-low input bias current avoids sensor loading error; 1.5 mV offset ensures <0.5% full-scale error in 3 V span; SO14 package supports automated optical inspection.

Automotive Cabin Air Quality Module

Industrial Handheld Multimeter Front-End

Use Scenario: Signal conditioning for CO₂, VOC, and humidity sensors in an automotive HVAC control module rated to AEC-Q100 Grade 2 (−40 °C to +105 °C).

IC Role / Device Role / Timing Role: Four independent sensor amplifiers - one per sensor type - sharing single 5 V rail, with diagnostics enabled via output monitoring.

Use Value: −40 °C to +125 °C operation meets automotive ambient spec; 5 kV HBM ESD withstand protects against assembly handling; SO14 package supports reflow-compatible manufacturing.

Use Scenario: Precision DC-coupled amplification and filtering in a Class II handheld multimeter with 4½-digit resolution and autoranging.

IC Role / Device Role / Timing Role: Low-drift instrumentation amplifier core (Ch A/B), reference voltage follower (Ch C), and buffered output stage (Ch D) driving 10 kΩ DMM input.

Use Value: 2 μV/°C offset drift maintains calibration stability across lab temperature swings; 0.0014% THD+N preserves AC measurement fidelity; SO14 thermal profile enables consistent solder joint reliability.

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
TSV994IDT	Standard grade (7.5 mV max V_IO vs. 1.5 mV); otherwise identical AC/DC specs and pinout.	Acceptable where system-level offset calibration is performed; lower cost for non-precision channels in multi-function instruments.	Select TSV994IDT when absolute DC accuracy is relaxed and budget constraints dominate.
TSV914AIDT	8 MHz GBW, 550 µA supply current, unity-gain stable; same SO14 package and rail-to-rail I/O.	Better suited for low-frequency, ultra-low-power applications (e.g., IoT sensor nodes) where 20 MHz is unnecessary.	Choose TSV914AIDT when bandwidth demand is ≤100 kHz and sub-2.2 mA total quiescent current is mandatory.

Compared with TSV994IDT, the TSV994AIDT trades higher cost for 5× lower input offset - critical for uncalibrated DC measurements. Against TSV914AIDT, it delivers 2.5× more bandwidth at only +49% supply current, making it optimal for active filtering and medium-speed data acquisition.

Availability

TSV994AIDT is available at Aetrix Electronics and suitable for battery-powered medical devices, portable environmental sensors, automotive cabin air quality modules, and industrial handheld test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TSV994AIDT 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 to address demand for high-speed, low-power, rail-to-rail op-amps in space-constrained, battery-operated systems - emphasizing precision, thermal robustness, and ease of use in single-supply configurations.

FAQ

Is TSV994AIDT unity-gain stable?

No. The TSV994AIDT is not unity-gain stable and requires minimum closed-loop gain of 4 (non-inverting) or −3 (inverting) for phase margin ≥45° with 100 pF capacitive load. To use in unity-gain buffer configuration, a series resistor (typically 10–50 Ω) must be added between output and load, and stability must be verified via bench testing and simulation using ST's macromodel.

What is the maximum capacitive load the TSV994AIDT can drive directly?

The TSV994AIDT is characterized for stability with up to 100 pF capacitive load when configured for minimum stable gain (≥4 or ≤−3). Driving larger capacitive loads (e.g., >200 pF) requires external compensation - such as a feedback capacitor in parallel with R_f - or isolation via a series resistor, as detailed in Section 5.1 of DS4975 Rev 16.

Does the exposed pad on the SO14 package require connection?

No. The exposed pad on the TSV994AIDT SO14 package is not internally connected. Per STMicroelectronics' datasheet (DS4975 Rev 16, page 17), it may be left floating or connected to V_CC− to improve thermal dissipation. If connected, it must be tied to the same net as Pin 4 and Pin 12 to avoid ground loops.

How does TSV994AIDT perform at 2.5 V supply?

At 2.5 V supply, the TSV994AIDT maintains full functionality: rail-to-rail input range (−0.1 V to +2.6 V), 20 MHz GBW, 820 µA supply current per channel, and ±35 mA output drive. Electrical characteristics including CMRR (≥53 dB), PSRR (≥70 dB), and THD+N (0.0025%) remain within datasheet limits across −40 °C to +125 °C.

TSV994AIDT 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

TSV994AIDT FAQ

1.How can I place an order for TSV994AIDT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSV994AIDT 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 TSV994AIDT reliable?

The price and inventory of TSV994AIDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV994AIDT is usually 5 days.

3.What payment methods are accepted for TSV994AIDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV994AIDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSV994AIDT?

TSV994AIDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSV994AIDT 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 TSV994AIDT?

For technical support, including TSV994AIDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV994AIDT requirements.

6.How does Aetrix verify that TSV994AIDT is sourced from the original manufacturer or authorized distributors?

All TSV994AIDT 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 TSV994AIDT meets industry standards.

7.What is the process for return or replacement of TSV994AIDT?

All TSV994AIDT units undergo pre-shipment inspection (PSI). If there is an issue with TSV994AIDT, 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 TSV994AIDT part is unused and in its original packaging.

Return procedure for TSV994AIDT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…