STMicroelectronics TSZ122IST Dual Op-Amp, SOIC8 Package for Precision IoT & Medical Sensing

STMicroelectronics TSZ122IST Dual Op-Amp Overview for Precision 2-Channel Circuits

The STMicroelectronics TSZ122IST is a high-precision, low-power dual operational amplifier (op-amp) engineered for B2B applications that demand 2-channel signal accuracy, space efficiency, and reliable performance-targeted at Medical Devices (portable diagnostic monitors, patient vital sign modules), Internet of Things (IoT) (2-sensor agricultural nodes, precision health wearables), and Industrial Automation (dual-input measurement tools, process control circuits). It integrates critical features-two independent op-amp channels, 1.8V?C5.5V supply range, 250??V max input offset voltage per channel, 0.42mA max supply current per channel, SOIC8 surface-mount package, and -40??C to +125??C operating temperature-to eliminate external calibration components and streamline 2-channel, high-precision designs.

With high-precision dual-channel signal conditioning (tuned for accuracy in battery-powered and space-constrained systems), it balances sub-millivolt signal integrity with low power draw and simplified assembly. This makes it ideal for engineers prioritizing multi-channel precision (regulatory compliance for medical gear), battery life (long-running portable devices), and miniaturization (sub-10mm modules) in electronic circuits. As part of STMicroelectronics?? precision dual op-amp lineup-a series trusted by 210,000+ developers in medical tech and industrial measurement sectors-it meets strict quality benchmarks: RoHS 2 compliance, ISO 9001 certification, IEC 61000-6-3 EMC compliance (medical/industrial environments), and 8,000+ hours of reliability testing (including thermal drift, noise floor, and channel isolation validation).

Senior engineers at a leading medical diagnostic brand endorse it: ??This dual op-amp powers our blood glucose monitors?? 2-channel signal chain. The 250??V offset cuts reading error by 32%, and SOIC8 fits our 7mm x 7mm module. It??s helped us meet FDA Class II standards and achieve 99.96% product yield.?? For more precision 2-channel components, visit IC Manufacturer.

Technical Parameters of STMicroelectronics TSZ122IST

Parameter	Specification
Function	Dual operational amplifier (op-amp) for high-precision 2-channel signal amplification/conditioning
Number of Channels	2 independent op-amp channels
Supply Voltage Range	1.8V to 5.5V DC (single supply, compatible with 3.7V lithium-ion batteries)
Supply Current (Max)	0.42mA per channel (at 3.3V supply, no load)
Input Offset Voltage (Max)	250??V per channel (at 3.3V supply, 25??C)
Total Harmonic Distortion + Noise (THD+N)	0.045% (at 1kHz frequency, 3.3V supply, 10k?? load)
Open-Loop Gain (Min)	82,000 V/V per channel (at 3.3V supply, 1kHz frequency)
Bandwidth (Typ)	1.4MHz per channel (at 3.3V supply, unity gain)
Input Bias Current (Max)	1nA per channel (at 3.3V supply, 25??C)
Operating Temperature Range	-40??C to +125??C (industrial/extended temperature grade)
Package Type	SOIC8 (8-pin Small Outline Integrated Circuit), 4.9mm x 3.9mm x 1.5mm dimensions (surface-mount)
Output Current (Max)	21mA per channel (sink/source, at 3.3V supply)
Compliance	RoHS 2 compliant, ISO 9001 certified, IEC 61000-6-3, FDA Class II compatible (for medical designs)

Key Technical Features of TSZ122IST Dual Op-Amp

• 250??V Low Input Offset Voltage per Channel: Reduces error. A medical designer noted: ??Our blood glucose monitor error dropped from 8mg/dL to 5.44mg/dL-meeting FDA??s ??15% accuracy requirement for home-use devices.??
• 0.42mA Low Current per Channel: Saves power. An IoT agricultural brand shared: ??2-sensor soil node battery life rose from 10 days to 13 days-a 30% improvement-cutting field maintenance trips.??
• SOIC8 Compact Package: Saves space. A diagnostic tool brand confirmed: ??PCB area used dropped by 50%-our dual-input voltage tester fits in 8mm x 8mm, down from 16mm x 16mm.??
• -40??C to +125??C Temp Range: Ensures stability. An industrial supplier said: ??Outdoor dual-pressure sensor accuracy drift dropped by 70%-warranty costs saved $260,000 yearly in manufacturing deployments.??
• 1.4MHz Bandwidth per Channel: Handles signals. A vital sign monitor brand explained: ??Captures 500Hz?C11kHz heart rate and oxygen signals clearly-no distortion, cutting ??unreliable data?? complaints by 43%.??

Advantages of TSZ122IST vs. Typical Alternatives

Compared to two single-channel precision op-amps, high-power dual op-amps, and bulky DIP-package dual op-amps, the TSZ122IST solves critical B2B pain points-backed by real customer feedback:

1. Fewer Components Than Two Single-Channel Precision Op-Amp: Using two single-channel op-amps requires two SOIC8 packages and extra passives, increasing PCB space (16mm x 16mm vs. 8mm x 8mm) and assembly defects. The dual-channel design eliminates this. A medical monitor brand said: ??Our old two-single-op-amp vital sign monitor used 22 components-this dual model uses 14. Assembly defects dropped by 18%, and we added a LCD display to the saved space, boosting product value and sales by 35%.??

2. Longer Battery Life Than High-Power Dual Op-Amp: High-power dual op-amps (e.g., 1.2mA per channel) drain batteries fast in portable 2-channel tools. The 0.42mA low current cuts waste. A portable meter brand shared: ??Our old 1.2mA dual op-amp meter lasted 6 days-this 0.42mA model lasts 13 days. Field technicians report 30% less charging time, and we??ve secured a $1.6M contract with a utility company for 300+ meters.??

3. Smaller Footprint Than Bulky DIP-Package Dual Op-Amp: DIP-package dual op-amps (e.g., DIP8) take up the same PCB area as SOIC8 but require larger solder pads (12mm x 12mm vs. 8mm x 8mm), limiting use in mini medical devices. The SOIC8 package fixes this. A diagnostic tool brand confirmed: ??Our old DIP8 dual op-amp glucose monitor was 14mm thick-too big for pocket use. This SOIC8 model is 7mm thick, and we launched a portable version that grew market share by 28%.??

Typical Applications of STMicroelectronics TSZ122IST

This high-precision dual op-amp excels in 2-channel accuracy-critical B2B designs-proven in these key use cases:

• Medical Devices (Portable Diagnostic Monitors): Low offset meets FDA standards, dual channels process vital signs. A medical brand confirmed: ??Glucose monitor error down by 32%, device size down by 50%.??
• Internet of Things (IoT) (2-Sensor Agricultural Nodes): Low current extends battery life, wide temp range resists weather. An IoT brand reported: ??Soil node battery life up by 30%, accuracy drift down by 70%.??
• Industrial Automation (Dual-Input Measurement Tools): High open-loop gain ensures accuracy, SOIC8 eases assembly. An industrial brand shared: ??Voltage tester runtime up by 30%, assembly defects down by 18%.??
• Medical Devices (Patient Vital Sign Modules): Low noise preserves weak signals, compliance meets medical standards. A medical brand confirmed: ??ECG signal clarity up by 40%, FDA Class II certification achieved.??
• Internet of Things (IoT) (Precision Health Wearables): Compact package fits wearables, low voltage works with tiny batteries. An IoT brand noted: ??Heart rate tracker size down by 50%, battery life up by 30%.??

Frequently Asked Questions (FAQ) About STMicroelectronics TSZ122IST

Why is dual-channel design important for medical vital sign monitors?

Medical vital sign monitors (e.g., heart rate + oxygen) need one op-amp per signal-using two single-channel op-amps adds components, PCB space, and assembly time, increasing costs. The dual-channel design integrates both in one package. A medical engineer said: ??Our old two-single-op-amp monitor used 22 components and 16mm x 16mm PCB space-this dual model uses 14 components and 8mm x 8mm. We cut production costs by $2.10 per unit, making our monitors more competitive, and sales rose by 35%.??

How does 250??V input offset voltage benefit blood glucose monitors?

Blood glucose monitors require ??15% accuracy (e.g., 8mg/dL error for 100mg/dL reading) to meet FDA standards-high-offset dual op-amps (500??V) cause 12mg/dL error, failing compliance. 250??V offset cuts error to 5.44mg/dL. A diagnostic brand said: ??Our old 500??V offset monitor had 20% of readings rejected-this 250??V model has 3%. We now supply 8 major pharmacies, and glucose monitor sales increased by 40% in a year.??

What value does the SOIC8 package add for portable IoT 2-sensor nodes?

Portable IoT 2-sensor nodes (e.g., soil moisture + temperature) need modules smaller than 10mm x 10mm to fit in field enclosures-using two single-channel op-amps (16mm x 16mm) is too large. The SOIC8 package??s 8mm x 8mm size fixes this. An IoT brand said: ??Our old two-single-op-amp sensor node couldn??t fit in 10mm enclosures-this SOIC8 dual model fits. We now supply 12 large farms, and agricultural sensor sales rose by 32%.??

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

Industrial dual-pressure sensors (e.g., factory air + hydraulic) face temperatures from -38??C (winter) to +95??C (summer)-op-amps with narrower ranges (0??C?C85??C) drift 0.6psi in cold weather, causing process errors. The wide range limits drift to 0.18psi. An industrial supplier said: ??Our old 0??C?C85??C sensor caused 10% production downtime-this model has 3%. A major auto parts factory now uses our sensors, and industrial revenue increased by 30%.??

Why is 0.42mA per channel current useful for portable industrial meters?

Portable industrial meters (e.g., dual-input voltage testers) are used 8+ hours daily-high-power dual op-amps (1.2mA per channel) drain batteries in 6 days, requiring weekly recharging. 0.42mA per channel extends life to 13 days. A tool brand said: ??Our old 1.2mA op-amp meter needed charging every 6 days-this 0.42mA model needs charging every 13 days. Field teams save 2.5 hours/week on charging, and we??ve added a new client with 300+ meters, growing revenue by 25%.??