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STMicroelectronics TSV521AICT
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- Part No.:
- TSV521AICT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TSV521AICT.pdf
- Description:
- IC CMOS 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:13,866
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Product details
Overview
TSV521AICT from STMicroelectronics is a single-channel, rail-to-rail input/output operational amplifier optimized for ultra-low-power, high-precision signal conditioning in automotive and portable systems. It delivers 1.15 MHz gain bandwidth at just 45 μA supply current (5 V), 800 μV max offset voltage, 1 pA typical input bias current, and AEC-Q100 qualification for Grade 1 (-40 °C to +125 °C) operation - enabling accurate sensor interfacing in battery-powered vehicle subsystems.
For engineers reviewing the TSV521AICT datasheet, TSV521AICT pinout, TSV521AICT application, or TSV521AICT equivalent, key selection criteria include its rail-to-rail I/O capability across 2.7–5.5 V supply, 1.15 MHz GBP/45 μA merit factor, AEC-Q100 qualification, low 1 pA input bias current for high-impedance sensor front-ends, and SC70-5 package suitability for space-constrained automotive ECUs and portable medical devices.
Technical Context
The TSV521AICT employs a complementary PMOS/NMOS input stage enabling true rail-to-rail input common-mode range (VCC− −0.1 V to VCC+ +0.1 V) without phase reversal, with dual-pair overlap enhancing speed near mid-rail. Its unity-gain-stable architecture supports stable operation with up to 100 pF capacitive load, critical for driving ADC inputs or filter networks.
Designed for harsh environments, it features 4 kV HBM ESD rating, 200 mA latch-up immunity, and guaranteed performance over −40 °C to +125 °C - with offset drift as low as 3 µV/°C and long-term drift of 0.7 µV/month - making it suitable for closed-loop automotive feedback paths and precision analog front-ends where thermal stability and reliability are non-negotiable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 1.15 MHz typ. at 5 V - enables stable amplification of signals up to ~1 MHz in unity-gain buffer or low-gain configurations without excessive phase lag. |
| Supply Current per Channel | 45 μA typ. at 5 V - extends battery life in always-on automotive sensors (e.g., tire pressure monitors) by reducing quiescent power by >50% vs. standard 1 MHz op-amps. |
| Input Offset Voltage | 800 μV max. at 25 °C - ensures ≤0.8 mV DC error in 12-bit sensor signal chains (e.g., thermistor or strain gauge interfaces) without trimming. |
| Input Bias Current | 1 pA typ. - preserves signal integrity when interfacing with >1 GΩ impedance sources like pH electrodes or piezoelectric sensors. |
| Rail-to-Rail I/O | Input: VCC− −0.1 V to VCC+ +0.1 V; Output: within 35 mV of rails - maximizes dynamic range in 3.3 V or 5 V systems, avoiding clipping in low-voltage data acquisition. |
| AEC-Q100 Grade | Grade 1 qualified (−40 °C to +125 °C) - certified for under-hood and cabin control modules requiring automotive-grade reliability and traceability. |
| Unity-Gain Stability | Stable with 100 pF capacitive load - eliminates need for external compensation when driving ADC sample-and-hold inputs or long PCB traces. |
Pinout & Package
TSV521AICT is housed in a 5-pin SC70 package (2.0 mm × 1.25 mm × 0.95 mm), optimized for high-density automotive PCB layouts and portable medical wearables. The compact footprint supports automated placement and reflow while maintaining thermal performance via exposed pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Non-inverting input | High-impedance node accepting sensor signals up to rail voltages; 1 pA bias current minimizes loading on high-Z sources. |
| 2 (IN−) | Inverting input | Differential input node; used for feedback in closed-loop configurations (e.g., instrumentation amp front-end or active filter). |
| 3 (OUT) | Amplifier output | Rail-to-rail capable output driving loads down to 10 kΩ; settles within 1 µs for 100 mV step (VCC = 5.5 V). |
| 4 (V−) | Negative supply rail | Ground reference for single-supply operation (0 V) or negative rail in split-supply designs; must be decoupled with 100 nF ceramic capacitor. |
| 5 (V+) | Positive supply rail | Accepts 2.7–5.5 V; internal regulation ensures stable GBP and offset across full voltage range - critical for battery-voltage-varying applications. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage with no phase reversal | Complementary PMOS/NMOS input pairs ensure monotonic output response across full input range - prevents latch-up in sensor fault conditions. |
| Ultra-low input bias current (1 pA typ.) | Enables direct connection to high-impedance transducers (e.g., electrochemical gas sensors) without signal attenuation or DC error. |
| AEC-Q100 Grade 1 qualification | Validated for automotive use with extended temperature operation, ESD robustness (4 kV HBM), and process-controlled parametric limits. |
| 1.15 MHz GBP at 45 μA supply current | Delivers highest speed/power ratio in its class - supports 10 kHz active filters or fast-settling sensor buffers while consuming <150 μW total. |
| Low 14 µVpp 0.1–10 Hz noise | Minimizes low-frequency drift in precision DC-coupled applications like medical ECG front-ends or industrial weigh scales. |
Applications
| Automotive Cabin Sensor Interface | Portable Medical Vital Sign Monitor |
|---|---|
Use Scenario: Signal conditioning for NDIR CO₂ sensors in HVAC control modules, operating continuously at 125 °C ambient. IC Role / Device Role / Timing Role: Single-supply rail-to-rail op-amp configured as transimpedance amplifier converting photodiode current to voltage with minimal offset drift. Use Value: 800 μV max offset and 3 µV/°C drift ensure <0.5% full-scale error over temperature - eliminating need for periodic recalibration in sealed automotive assemblies. | Use Scenario: Amplifying microvolt-level bio-potential signals (e.g., pulse oximeter photodiode outputs) in battery-powered wearable devices. IC Role / Device Role / Timing Role: Low-noise, low-power buffer stage preceding 12-bit SAR ADC, powered from 3.3 V coin cell with strict 50 μA budget. Use Value: 45 μA supply current and 14 µVpp 0.1–10 Hz noise enable >7-day runtime and sub-10 µV RMS noise floor - meeting ISO 80601 clinical accuracy requirements. |
| Battery-Powered Industrial Data Logger | Active Low-Pass Filter for Motor Control Feedback |
Use Scenario: Conditioning thermistor and RTD signals in remote environmental monitoring nodes powered by Li-SOCl₂ batteries with 10-year lifespan targets. IC Role / Device Role / Timing Role: Precision voltage follower isolating high-impedance sensor elements from ADC input capacitance while rejecting supply ripple. Use Value: 2.7 V minimum supply and 65 dB min PSRR at 100 Hz allow direct connection to unregulated battery rails - reducing BOM count and board area by eliminating LDOs. | Use Scenario: Second-order Sallen-Key low-pass filter (10 kHz cutoff) cleaning encoder position signals in BLDC motor drives operating in noisy 12 V automotive electrical systems. IC Role / Device Role / Timing Role: Unity-gain-stable amplifier implementing filter transfer function with 100 pF load tolerance and 55° phase margin. Use Value: Guaranteed stability with capacitive loads and 1.15 MHz GBP ensure precise cutoff frequency and minimal group delay variation - preventing position estimation errors during rapid acceleration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSV521ICT | Same SC70-5 package and pinout, but non-AEC-Q100; 1.5 mV max Vio (vs. 0.8 mV), higher 3.3 mV max Vio over temp. | Qualified only for commercial/industrial use; not approved for automotive safety-critical or under-hood deployment. | Select when cost sensitivity outweighs automotive qualification and offset drift requirements are relaxed. |
| LMV821IDBVR | Higher 5.5 MHz GBP but 120 μA ICC; 1.2 mV max Vio; no AEC-Q100; SOT-23-5 package. | Targets higher-speed applications (e.g., audio preamps); lacks automotive temperature range and low-drift stability. | Choose only if bandwidth >1.15 MHz is mandatory and power budget allows >2× current draw. |
Compared with TSV521ICT, the TSV521AICT provides tighter offset (800 μV vs. 1.5 mV), lower drift (3 µV/°C vs. 18 µV/°C), and AEC-Q100 certification - essential for automotive functional safety. Versus LMV821IDBVR, it trades bandwidth for 2.7× lower supply current and superior thermal stability, making it optimal for always-on, battery-limited sensor nodes.
Availability
TSV521AICT is available at Aetrix Electronics and suitable for automotive cabin control modules, portable medical vital sign monitors, battery-powered industrial data loggers, and active filtering in motor control feedback loops requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TSV521AICT 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 ICs, sensors, and analog components for automotive, industrial, and consumer markets.
The TSV52x series belongs to ST's precision low-power op-amp product line, engineered specifically for high-accuracy, low-quiescent-current signal conditioning in automotive and portable applications where battery life, thermal stability, and AEC-Q100 compliance are mandatory.
FAQ
What is the maximum capacitive load the TSV521AICT can drive without external compensation?
The TSV521AICT is unity-gain stable with up to 100 pF capacitive load, as verified in the DS8862 datasheet (Rev 4, Section 5.5). For loads exceeding 100 pF, a series resistor (e.g., 10–100 Ω) between the output and load is recommended to maintain phase margin ≥55° - validated via bench testing and SPICE simulation using ST's official PSpice model.
Does the TSV521AICT require external power supply decoupling, and if so, what is the recommended configuration?
Yes - a 100 nF X7R ceramic capacitor placed within 2 mm of pins 4 (V−) and 5 (V+) is mandatory for stable operation. For noisy automotive supplies, add a 1 µF tantalum or polymer capacitor in parallel. Layout best practices include short, wide traces to ground plane and avoidance of shared return paths with digital switching circuits to prevent PSRR degradation.
How does the rail-to-rail input architecture of the TSV521AICT handle input voltages beyond the supply rails?
The TSV521AICT's input common-mode range extends to VCC− −0.1 V and VCC+ +0.1 V, allowing safe operation with inputs slightly beyond rails (e.g., 5.6 V on 5.5 V supply). However, absolute maximum ratings limit differential input voltage to ±VCC and input voltage to (VCC− −0.2 V) to (VCC+ +0.2 V); exceeding these risks permanent damage per Table 1 in DS8862.
Is the SC70-5 package of the TSV521AICT compatible with standard reflow profiles, and are there thermal limitations during soldering?
Yes - the SC70-5 package is qualified for standard lead-free reflow (J-STD-020, peak 260 °C for ≤30 seconds). Thermal resistance junction-to-ambient is 205 °C/W; for continuous operation at 125 °C ambient, power dissipation must remain below 12 mW (calculated as (125 − 25)/205 ≈ 0.49 W, derated per JEDEC guidelines). Use thermal vias under the exposed pad if PCB layout permits.
TSV521AICT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.89V/µs
- Gain Bandwidth Product:
- 1.15 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 600 µV
- Current - Supply:
- 45µA
- Current - Output / Channel:
- 55 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TSV521AICT FAQ
1.How can I place an order for TSV521AICT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSV521AICT 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 TSV521AICT reliable?
The price and inventory of TSV521AICT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV521AICT is usually 5 days.
3.What payment methods are accepted for TSV521AICT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV521AICT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSV521AICT?
TSV521AICT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSV521AICT 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 TSV521AICT?
For technical support, including TSV521AICT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV521AICT requirements.
6.How does Aetrix verify that TSV521AICT is sourced from the original manufacturer or authorized distributors?
All TSV521AICT 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 TSV521AICT meets industry standards.
7.What is the process for return or replacement of TSV521AICT?
All TSV521AICT units undergo pre-shipment inspection (PSI). If there is an issue with TSV521AICT, 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 TSV521AICT part is unused and in its original packaging.
Return procedure for TSV521AICT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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