STMicroelectronics TS321AILT Single Op-Amp, SOT23-5 Package for IoT & Portable Devices

STMicroelectronics TS321AILT Single Op-Amp Overview for Compact IoT & Portable Electronics

The STMicroelectronics TS321AILT is an ultra-compact, low-power single operational amplifier (op-amp) engineered for B2B applications that demand miniaturization, low-voltage operation, and reliable performance-targeted at Internet of Things (IoT) (smart sensor modules, wearable devices), Consumer Electronics (portable test tools, Bluetooth earbuds), and Industrial Automation (outdoor sensor signal conditioning, low-power control circuits). It integrates critical features-single op-amp channel, 1.8V?C5.5V supply range, 0.4mA max supply current, SOT23-5 surface-mount package, and -40??C to +125??C operating temperature-to eliminate external voltage regulators and streamline space-constrained circuit design.

Com compact low-power signal amplification (tuned for efficiency in battery-powered and micro-enclosure systems), it balances consistent signal performance with minimal power use and PCB footprint. This makes it ideal for engineers prioritizing miniaturization (sub-8mm device designs), battery life (portable/IoT products), and versatility (low-voltage compatibility) in electronic circuits. As part of STMicroelectronics?? compact IoT op-amp lineup-a series trusted by 185,000+ developers in IoT and portable tech sectors-it meets strict quality benchmarks: RoHS 2 compliance, ISO 9001 certification, IEC 61000-6-3 EMC compliance (consumer/IoT environments), and 6,500+ hours of reliability testing (including thermal cycling, voltage stability, and humidity resistance validation).

Senior engineers at a leading IoT wearable brand endorse it: ??This single op-amp amplifies our heart rate sensor signals. The SOT23-5 package fits our 7mm x 7mm module, and low current extends battery life. It??s helped us hit 99.98% device uptime and 96% customer satisfaction.?? For more compact IoT and portable electronics components, visit Fabricante de CI.

Technical Parameters of STMicroelectronics TS321AILT

Parâmetro	Especificação
Função	Single operational amplifier (op-amp) for low-voltage signal amplification/conditioning (IoT/portable grade)
Número de canais	1 independent op-amp channel
Gama de tensão de alimentação	1,8V a 5,5V DC (alimentação única, compatível com baterias de iões de lítio de 3,7V)
Corrente de alimentação (máx.)	0.4mA (at 3.3V supply, no load)
Distorção harmónica total + ruído (THD+N)	0.06% (at 1kHz frequency, 3.3V supply, 10k?? load)
Ganho em circuito aberto (mín.)	70,000 V/V (at 3.3V supply, 1kHz frequency)
Largura de banda (Tip)	1.2MHz (at 3.3V supply, unity gain)
Tensão de desvio de entrada (máx.)	8mV (at 3.3V supply, 25??C)
Gama de temperaturas de funcionamento	-40??C a +125??C (classe de temperatura industrial/extensa)
Tipo de embalagem	SOT23-5 (5-pin Small Outline Transistor), 2.9mm x 1.6mm x 1.1mm dimensions (surface-mount)
Corrente de saída (máx.)	18mA (sink/source, at 3.3V supply)
Conformidade	RoHS 2 compliant, ISO 9001 certified, IEC 61000-6-3

Key Technical Features of TS321AILT Single Op-Amp

• 1.8V?C5.5V Low Supply Range: Fits batteries. A wearable tech designer noted: ??Works with 3.7V lithium-ion cells-no regulators, cutting per-unit costs by $0.25 and PCB space by 12%.??
• 0.4mA Low Supply Current: Saves power. An IoT sensor brand shared: ??Portable asset tracker battery life jumped from 8 days to 10.4 days-a 30% improvement-reducing user maintenance.??
• SOT23-5 Ultra-Compact Package: Saves space. A Bluetooth earbud brand confirmed: ??PCB area used dropped by 65%-our earbud audio module fits in 5mm x 5mm, down from 14mm x 14mm.??
• -40??C a +125??C Gama de temperaturas: Ensures ruggedness. An industrial supplier said: ??Outdoor temperature sensor failure rate dropped by 1.5%-warranty costs saved $210,000 yearly in industrial deployments.??
• 1.2MHz Bandwidth: Handles signals. A portable test tool brand explained: ??Captures 1kHz?C10kHz test signals clearly-no distortion, cutting ??inaccurate reading?? complaints by 35%.??

Advantages of TS321AILT vs. Typical Alternatives

Compared to high-voltage single op-amps, bulky DIP-package op-amps, and high-power single op-amps, the TS321AILT solves critical B2B pain points-backed by real customer feedback:

1. Better Battery Compatibility Than High-Voltage Single Op-Amp: High-voltage op-amps (e.g., 5V?C15V) require $0.30 voltage regulators to work with 3.7V lithium-ion batteries, adding cost and size. The 1.8V?C5.5V range eliminates this. A portable test tool brand said: ??Our old 5V?C15V op-amp sensor needed a regulator-this model works directly. Per-unit costs dropped by $0.30, and we now supply 5 new portable device clients who use lithium-ion cells.??

2. Smaller Footprint Than Bulky DIP-Package Op-Amp: DIP-package op-amps (e.g., DIP8) take up 3x more PCB space than SOT23-5, forcing IoT/wearable devices to exceed size limits. The SOT23-5 package fixes this. A smartwatch brand shared: ??Our old DIP8 op-amp heart rate module was 16mm x 16mm-this SOT23-5 model is 7mm x 7mm. We launched a slimmer watch that fits 99% of wrist sizes, and sales rose by 38%.??

3. Longer Battery Life Than High-Power Single Op-Amp: High-power op-amps (e.g., 2mA supply current) drain batteries fast in portable IoT devices. The 0.4mA low current cuts waste. An IoT asset tracker brand confirmed: ??Our old 2mA op-amp tracker lasted 5 days-this 0.4mA model lasts 10.4 days. Clients report 30% lower battery replacement costs, and we??ve secured 4 new logistics clients who prioritize low maintenance.??

Typical Applications of STMicroelectronics TS321AILT

This compact low-power op-amp excels in IoT and portable B2B designs-proven in these key use cases:

• Internet of Things (IoT) (Wearable Devices): Amplifies biometric sensor signals, small package fits wearables. An IoT brand confirmed: ??Wearable module size down by 65%, battery life up by 30%.??
• Consumer Electronics (Bluetooth Earbuds): Low current extends playtime, compact package saves space. A consumer brand reported: ??Earbud battery life up by 30%, PCB space down by 65%.??
• Industrial Automation (Outdoor Sensors): Rugged temp range resists weather, low power suits solar systems. An industrial brand shared: ??Outdoor sensor uptime hit 99.9%, warranty costs saved $210,000 yearly.??
• Consumer Electronics (Portable Test Tools): Low voltage fits lithium-ion batteries, bandwidth handles test signals. A consumer brand confirmed: ??Test tool size down by 45%, ??inaccurate reading?? complaints down by 35%.??
• Internet of Things (IoT) (Asset Trackers): Low current extends battery life, small package fits trackers. An IoT brand noted: ??Asset tracker battery life up by 30%, client maintenance costs down by 30%.??

Frequently Asked Questions (FAQ) About STMicroelectronics TS321AILT

Why is the 1.8V?C5.5V supply range important for IoT wearable devices?

IoT wearables use 3.7V lithium-ion batteries that discharge from 4.2V (full) to 3.0V (low)-high-voltage op-amps fail at 3.0V, while low-voltage op-amps (below 1.8V) waste power. The 1.8V?C5.5V range works across the battery??s life. A wearable engineer said: ??Our old 5V?C15V op-amp died when batteries hit 3.0V-this model works down to 1.8V. Wearable uptime rose from 82% to 99.9%, and we retained 3 key clients who previously had battery-related issues.??

How does the SOT23-5 package improve Bluetooth earbud design?

Bluetooth earbuds need modules smaller than 8mm to fit in ear canals-bulky DIP8 op-amps force earbuds to be too large, causing discomfort. The SOT23-5 package??s tiny size fixes this. A earbud brand said: ??Our old DIP8 op-amp audio module was 14mm x 14mm-too big for 45% of users. This SOT23-5 model is 5mm x 5mm, fitting all users. Earbud sales rose by 38%, and comfort ratings improved from 3.1/5 to 4.9/5.??

What value does 0.4mA supply current add for IoT asset trackers?

IoT asset trackers are deployed in remote areas and need long battery life-high-power op-amps (2mA) drain small batteries fast, requiring monthly replacements. 0.4mA cuts drain, extending life to 10+ days. An IoT brand said: ??Our old 2mA op-amp tracker needed monthly battery changes-this 0.4mA model needs changes every 10 days. Clients save 30% on maintenance costs, and we??ve added 4 new logistics clients who need low-upkeep trackers.??

How does the -40??C to +125??C temperature range benefit outdoor industrial sensors?

Outdoor industrial sensors face temperatures from -35??C (winter) to +95??C (summer)-op-amps with narrower ranges (0??C?C85??C) shut down, causing data gaps. The wide range ensures 24/7 operation. An industrial supplier said: ??Our old 0??C?C85??C op-amp sensor had 10% downtime in winter-this model has 0. Factory clients now get 100% data coverage, and we??ve expanded to 3 new cold-climate regions, boosting revenue by 32%.??

Why is 1.2MHz bandwidth useful for portable test tools?

Portable test tools (e.g., mini oscilloscopes) measure signals up to 10kHz-low-bandwidth op-amps (1MHz) distort signals above 8kHz, leading to ??inaccurate reading?? complaints. 1.2MHz handles these signals clearly. A test tool brand said: ??Our old 1MHz op-amp tool had 40% ??inaccurate?? complaints-this 1.2MHz model cuts it to 5%. We now supply 6 electronics repair shops that rely on precise measurements, and test tool sales rose by 35%.??