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STMicroelectronics TSV521ICT
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- Part No.:
- TSV521ICT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TSV521ICT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,679
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Product details
Overview
TSV521ICT 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 only 45 μA supply current (5 V), 800 μV max offset voltage, and operates from 2.7–5.5 V - enabling direct interface with 3.3 V microcontrollers and high-impedance sensors in battery-powered automotive sensor nodes.
For engineers reviewing the TSV521ICT datasheet, TSV521ICT pinout, TSV521ICT application, or TSV521ICT equivalent, this op amp is selected for low-noise analog front-ends where rail-to-rail operation, AEC-Q100 qualification, and stable performance across –40 °C to +125 °C are mandatory - especially in oxygen sensor signal chains, tire pressure monitoring systems, and portable medical ECG amplifiers.
Technical Context
The TSV521ICT 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 activation enhancing speed near mid-supply. Its unity-gain stability is verified with 100 pF capacitive load, supporting robust active filtering in noisy automotive environments.
It features 76 dB CMRR and 87 dB SVR at 5 V, 57 nV/√Hz input noise at 1 kHz, and 0.89 V/μs slew rate - balancing precision, speed, and power efficiency for DC-coupled sensor interfaces requiring <1 mV offset drift over temperature and <0.002% THD+N at 1 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 1.15 MHz at 5 V - enables stable closed-loop gain up to 100× at 10 kHz for sensor amplification without instability. |
| Supply Current per Channel | 45 μA typ. at 5 V - extends battery life beyond 10 years in coin-cell-powered automotive modules. |
| Input Offset Voltage | 800 μV max at 25 °C - ensures ≤0.5% full-scale error in 16-bit ADC front-ends with ±2.5 V input range. |
| Rail-to-Rail I/O | Input: VCC− −0.1 V to VCC+ +0.1 V; Output: within 35 mV of rails - maximizes dynamic range when interfacing with 3.3 V SAR ADCs. |
| Operating Temperature | –40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood automotive use without derating. |
| Input Bias Current | 1 pA typ. - preserves signal integrity from >1 GΩ source impedances (e.g., pH electrodes, piezoresistive strain gauges). |
| THD+N | 0.002% at 1 kHz, 1 Vpp output - meets Class I audio and diagnostic-grade medical instrumentation requirements. |
Pinout & Package
TSV521ICT is housed in SC70-5 package (2.0 mm × 1.25 mm, 0.65 mm pitch), optimized for space-constrained automotive PCBs and portable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN+ | Non-inverting input | Accepts rail-to-rail common-mode signals; bias current ≤1 pA minimizes voltage drop across high-Z sensor sources. |
| 2: IN− | Inverting input | Differential input node; supports unity-gain buffer or precision inverting amplifier configurations. |
| 3: OUT | Amplifier output | Drives loads down to 10 kΩ while staying within 35 mV of supply rails - compatible with 3.3 V logic thresholds. |
| 4: VCC− | Negative supply | Ground reference (0 V) in single-supply operation; must be connected directly to PCB ground plane for EMI immunity. |
| 5: VCC+ | Positive supply | Accepts 2.7–5.5 V; internal regulation ensures stable biasing across automotive battery transients (e.g., load dump, cold crank). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Grade 1 (–40 °C to +125 °C) - certified for engine control units, body electronics, and ADAS sensor modules. |
| Rail-to-rail input/output | Full 0–5.5 V signal swing preserved - eliminates level-shifting circuitry in 3.3 V systems interfacing with 5 V sensors. |
| 1.15 MHz GBP / 45 μA | Merit factor of 25.6 kHz/μA - highest among AEC-Q100 op amps in SC70-5, enabling faster settling without compromising battery life. |
| 800 μV max Vio | Guaranteed over full temperature range - reduces need for factory calibration in production test of automotive pressure sensors. |
| Unity-gain stable with 100 pF | Enables direct driving of ADC input capacitance or long traces without external compensation - simplifies layout in compact modules. |
Applications
| Oxygen Sensor Signal Conditioning | Tire Pressure Monitoring System (TPMS) |
|---|---|
|
Use Scenario: Amplifying low-level mV-range Nernst voltage from zirconia-based O₂ sensors in exhaust manifolds. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with rail-to-rail input to capture full sensor swing during cold-start conditions. Use Value: 1 pA input bias current prevents loading of high-impedance sensor elements; 800 μV max Vio ensures <0.2% measurement error over full temperature range. |
Use Scenario: Conditioning piezoresistive bridge output in wheel-mounted TPMS modules powered by lithium batteries. IC Role / Device Role / Timing Role: Low-power transimpedance amplifier converting bridge imbalance current into stable voltage for 12-bit ADC sampling. Use Value: 45 μA quiescent current extends 10-year battery life; AEC-Q100 qualification guarantees reliability at 125 °C ambient. |
| Portable ECG Front-End | Automotive Cabin Air Quality Monitor |
|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in handheld ECG devices. IC Role / Device Role / Timing Role: First-stage gain block with ultra-low noise (57 nV/√Hz) and rail-to-rail output to drive anti-aliasing filters. Use Value: 0.002% THD+N preserves waveform fidelity for arrhythmia detection; SC70-5 footprint saves board space in wearable form factors. |
Use Scenario: Signal conditioning for MEMS-based CO₂ and VOC sensors in HVAC control modules. IC Role / Device Role / Timing Role: High-impedance buffer isolating sensor output from PCB leakage paths and digital noise coupling. Use Value: 1 pA input bias current prevents drift in ppm-level gas concentration readings; 76 dB CMRR rejects common-mode noise from switching regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSV631ICT | Lower min. supply (1.5 V), 0.85 MHz GBP, 22 μA ICC - trades bandwidth for lower voltage operation. | Better suited for single-cell Li-ion (2.7–4.2 V) or energy-harvesting systems needing sub-2 V start-up. | Select when operating below 2.7 V is required; not AEC-Q100 qualified - avoid for automotive safety-critical functions. |
| LMV821IDBVR | Higher GBP (5.5 MHz), 130 μA ICC, 1.5 mV Vio max - prioritizes speed over power and precision. | Preferred for active filter stages requiring >100 kHz cutoff or fast-settling DAC buffers. | Choose only if bandwidth >2 MHz is mandatory; higher Vio and no AEC-Q100 make it unsuitable for calibrated automotive sensors. |
Compared with TSV631ICT and LMV821IDBVR, the TSV521ICT uniquely balances AEC-Q100 qualification, 1.15 MHz bandwidth, and sub-50 μA consumption - making it the sole option for automotive-grade, battery-operated precision amplification where all three attributes are non-negotiable.
Availability
TSV521ICT is available at Aetrix Electronics and suitable for automotive sensor modules, portable medical diagnostics, and industrial battery-powered data loggers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TSV521ICT 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 analog portfolio, engineered specifically for ultra-low-power, high-accuracy signal conditioning in harsh-environment applications - with emphasis on AEC-Q100 compliance, rail-to-rail performance, and minimal quiescent current.
FAQ
Is TSV521ICT pin-compatible with other SC70-5 op amps like TS912 or MCP6001?
No - TSV521ICT uses a non-standard SC70-5 pinout: Pin 1 = IN+, Pin 2 = IN−, Pin 3 = OUT, Pin 4 = VCC−, Pin 5 = VCC+. TS912 and MCP6001 follow different assignments (e.g., VCC+ on Pin 5, VCC− absent or tied internally). Direct replacement requires PCB redesign or adapter routing.
Can TSV521ICT drive a 1000 pF capacitive load without oscillation?
No - the datasheet guarantees unity-gain stability only up to 100 pF. Driving 1000 pF requires an external series resistor (≥100 Ω, per Figure 29) between OUT and the load to isolate capacitance and restore phase margin. Bench validation is mandatory for final design.
What is the maximum allowable input differential voltage for TSV521ICT?
The absolute maximum differential input voltage is ±VCC (±5.5 V). However, sustained differential voltages >±0.7 V may cause increased input bias current and offset drift. For reliable operation, keep Vid ≤±0.5 V in precision applications - especially near temperature extremes.
Does TSV521ICT support single-supply operation with VCC− grounded?
Yes - VCC− is designed as the ground reference in single-supply configurations. With VCC− = 0 V and VCC+ = 2.7–5.5 V, the device achieves rail-to-rail input (0–5.5 V) and output (35 mV above 0 V and below VCC+), enabling seamless integration with 3.3 V microcontrollers and ADCs.
TSV521ICT 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:
- General Purpose
- 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:
- 1 mV
- 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
TSV521ICT FAQ
1.How can I place an order for TSV521ICT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSV521ICT 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 TSV521ICT reliable?
The price and inventory of TSV521ICT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV521ICT is usually 5 days.
3.What payment methods are accepted for TSV521ICT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV521ICT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSV521ICT?
TSV521ICT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSV521ICT 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 TSV521ICT?
For technical support, including TSV521ICT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV521ICT requirements.
6.How does Aetrix verify that TSV521ICT is sourced from the original manufacturer or authorized distributors?
All TSV521ICT 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 TSV521ICT meets industry standards.
7.What is the process for return or replacement of TSV521ICT?
All TSV521ICT units undergo pre-shipment inspection (PSI). If there is an issue with TSV521ICT, 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 TSV521ICT part is unused and in its original packaging.
Return procedure for TSV521ICT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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