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

STMicroelectronics TSV522IST

Name: TSV522IST
Brand: STMicroelectronics
SKU: TSV522IST
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSV522IST

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: TSV522IST.pdf

Description:: IC CMOS 2 CIRCUIT 8MINISO

Quantity:: RFQ Add To RFQ list

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Inventory:3,835

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Product details

Overview

TSV522IST from STMicroelectronics is a dual 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 45 μA per channel (5 V), 800 μV max offset voltage, 1 pA typical input bias current, and operates from 2.7 V to 5.5 V - enabling direct interfacing with high-impedance sensors in battery-powered automotive ECUs.

For engineers reviewing the TSV522IST datasheet, TSV522IST pinout, TSV522IST application, or TSV522IST equivalent, key selection criteria include its AEC-Q100 qualification, rail-to-rail operation across –40 °C to +125 °C, unity-gain stability with 100 pF load, low-noise (57 nV/√Hz @ 1 kHz), and dual-channel DFN8 2×2 package compatibility with MiniSO8 footprint.

Technical Context

The TSV522IST uses complementary PMOS/NMOS input stages to achieve true rail-to-rail input (V_CC– – 0.1 V to V_CC+ + 0.1 V) without phase reversal, with performance degradation only in the transition region near mid-supply. Its architecture enables simultaneous N- and P-pair conduction for improved speed and merit factor (1.15 MHz / 45 μA).

It features internal compensation for unity-gain stability with up to 100 pF capacitive load, 55° phase margin, and 7 dB gain margin. Output drives ±36 mA (typ. @ 5 V) with rail-to-rail swing - 35 mV max from rails into 10 kΩ - supporting precision buffer and active filter topologies in harsh environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain Bandwidth Product	1.15 MHz (typ. @ 5 V): Enables stable closed-loop operation up to ~100 kHz in unity-gain follower or low-gain configurations.
Supply Current per Channel	45 μA (typ. @ 5 V): Supports >10-year battery life in always-on sensor nodes drawing <100 μA total system current.
Input Offset Voltage	800 μV (max @ 25 °C): Limits DC error to <0.016% of 5 V full-scale, critical for 12-bit+ ADC front-ends.
Input Bias Current	1 pA (typ.): Allows use with >1 GΩ source impedances (e.g., pH electrodes, piezoresistive sensors) without significant voltage drop.
Rail-to-Rail I/O	V_IN: V_CC– – 0.1 V to V_CC+ + 0.1 V; V_OUT: within 35 mV of rails @ 10 kΩ: Maximizes dynamic range in single-supply 3.3 V or 5 V systems.
Operating Temperature	–40 °C to +125 °C: Fully specified for under-hood automotive applications and industrial edge sensors.
AEC-Q100 Grade	Qualified to Grade 1 (–40 °C to +125 °C): Meets automotive reliability and stress-test requirements for safety-critical signal paths.

Pinout & Package

TSV522IST is housed in an 8-pin DFN (2 mm × 2 mm, 0.5 mm pitch) with exposed thermal pad. Pin 1 is marked by a dot; the exposed pad may be connected to V_CC– or left floating for improved thermal dissipation or isolation.

Pin/Terminal	Circuit Role	Design Meaning
1 (IN1–)	Inverting input, Channel 1	Differential node for feedback configuration; supports high-Z sources due to 1 pA bias current.
2 (IN1+)	Non-inverting input, Channel 1	Reference input for unity-gain buffer or differential pair; rail-to-rail common-mode range enables single-supply sensing.
3 (V_CC–)	Negative supply rail	Ground reference for single-supply operation; exposed pad connection improves thermal resistance (57 °C/W).
4 (OUT1)	Output, Channel 1	Drives loads down to 10 kΩ while maintaining rail-to-rail swing; stable with 100 pF capacitive load.
5 (OUT2)	Output, Channel 2	Independent output stage; allows dual-path signal conditioning (e.g., differential drive or dual-sensor buffering).
6 (IN2+)	Non-inverting input, Channel 2	Second high-impedance input; pin-compatible with industry-standard dual op-amp footprints (MiniSO8).
7 (IN2–)	Inverting input, Channel 2	Enables independent gain-setting for second channel; identical electrical specs to Channel 1.
8 (V_CC+)	Positive supply rail	Accepts 2.7–5.5 V; PSRR of 87 dB (typ.) rejects supply noise in noisy automotive environments.

Key Features

Feature	Design Value
Ultra-low quiescent current	45 μA per channel @ 5 V enables multi-year operation on coin-cell batteries in tire pressure sensors and remote keyless entry receivers.
Rail-to-rail input with no phase reversal	Guaranteed operation from V_CC– – 0.1 V to V_CC+ + 0.1 V eliminates clipping at supply rails - essential for accurate zero-crossing detection in motor control feedback.
High ESD tolerance	4 kV HBM rating protects against assembly handling and in-system transients in automotive production lines and field service.
Unity-gain stable with capacitive loads	Stable driving up to 100 pF directly (no external isolation resistor required) simplifies PCB layout for sensor cable interfaces and EMC-filtered inputs.
Low input voltage drift	3–18 μV/°C max ensures <2.6 mV total offset shift over –40 °C to +125 °C - critical for uncalibrated temperature-compensated pressure transducers.

Applications

Automotive Cabin Pressure Sensing

Portable ECG Front-End

Use Scenario: Monitoring cabin air pressure in HVAC control modules using piezoresistive sensors with >100 kΩ output impedance.

IC Role / Device Role / Timing Role: Dual-channel TSV522IST buffers and amplifies two independent sensor outputs while rejecting common-mode supply ripple.

Use Value: 1 pA input bias current prevents loading-induced offset errors; AEC-Q100 qualification ensures reliability over 15-year vehicle lifetime.

Use Scenario: Amplifying microvolt-level biopotential signals from dry-electrode ECG patches in wearable monitors.

IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with rail-to-rail input enabling full 0–3.3 V ADC range utilization.

Use Value: 57 nV/√Hz input noise preserves SNR for 0.5–40 Hz cardiac band; 45 μA/channel extends battery life beyond 7 days.

Battery-Powered Gas Detector

Industrial Thermocouple Signal Conditioning

Use Scenario: Interfacing electrochemical gas sensors requiring low-bias-current, low-power amplification in handheld leak detectors.

IC Role / Device Role / Timing Role: Transimpedance amplifier stage converting pA-level sensor current to voltage with minimal power overhead.

Use Value: 800 μV max V_OS limits baseline drift; 2.7 V minimum supply allows direct Li-ion (3.0–4.2 V) operation without LDO.

Use Scenario: Cold-junction compensation and linearization of K-type thermocouples in programmable logic controller (PLC) analog input modules.

IC Role / Device Role / Timing Role: Precision buffer isolating thermocouple leads from ADC multiplexer switching transients and PCB leakage paths.

Use Value: Rail-to-rail output drives 12-bit SAR ADC reference range fully; –40 °C to +125 °C operation covers extended industrial ambient ranges.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual rail-to-rail op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TSV632IST	Lower min. supply (1.5 V), lower GBP (0.22 MHz), higher V_OS (1.5 mV max)	Better for sub-2 V energy-harvesting systems; insufficient for 100 kHz active filters	Select when ultra-low-voltage operation outweighs bandwidth and offset requirements.
LMV822IDT	Higher GBP (5.5 MHz), higher supply current (120 μA), non-AEC-Q100	Suitable for high-speed sensor sampling but not qualified for automotive under-hood use	Choose only for non-automotive industrial applications needing faster settling or higher drive capability.

Compared with TSV632IST and LMV822IDT, the TSV522IST uniquely balances AEC-Q100 compliance, 1.15 MHz bandwidth at 45 μA, and 800 μV max offset - making it the only dual op-amp meeting all three constraints for automotive-grade precision sensor interfaces.

Availability

TSV522IST is available at Aetrix Electronics and suitable for automotive signal conditioning, portable medical instrumentation, and battery-powered gas detection requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for TSV522IST 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 automotive and portable applications where supply headroom, thermal constraints, and long-term stability are critical.

FAQ

Is the TSV522IST pin-compatible with standard MiniSO8 dual op-amps?

Yes - the TSV522IST in DFN8 2×2 matches the pinout of industry-standard MiniSO8 dual op-amps (e.g., pin 1 = IN1–, pin 2 = IN1+, pin 3 = V_CC–, etc.). This enables drop-in replacement on existing layouts when thermal or size constraints allow DFN adoption, with identical signal routing and feedback network placement.

Can the TSV522IST drive a 1000 pF capacitive load?

No - the device is unity-gain stable only up to 100 pF per output. Driving 1000 pF requires an external series resistor (≥20 Ω, per Figure 29) between the output and load to restore phase margin. Without it, oscillation or overshoot occurs due to pole splitting in the output stage.

What is the maximum allowable supply voltage for continuous operation?

The absolute maximum supply voltage is 6 V, but the device is fully characterized and guaranteed only from 2.7 V to 5.5 V. Operation at 6 V risks exceeding junction temperature limits under load and voids AEC-Q100 qualification - ST specifies 5.5 V as the maximum recommended operating voltage.

Does the exposed thermal pad on the DFN8 package require solder connection?

The exposed pad may be connected to V_CC– (ground) or left floating. Connecting it improves thermal resistance from 57 °C/W to ~45 °C/W but is not mandatory for functionality. If connected, ensure it is electrically tied to the same net as pin 3 (V_CC–) and fully soldered for mechanical reliability.

TSV522IST Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: CMOS

Number of Circuits:: 2

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 (x2 Channels)

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:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-MiniSO

TSV522IST FAQ

1.How can I place an order for TSV522IST through Aetrix?

Please submit a Request for Quotation (RFQ) for TSV522IST 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 TSV522IST reliable?

The price and inventory of TSV522IST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV522IST is usually 5 days.

3.What payment methods are accepted for TSV522IST?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV522IST transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSV522IST?

TSV522IST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSV522IST 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 TSV522IST?

For technical support, including TSV522IST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV522IST requirements.

6.How does Aetrix verify that TSV522IST is sourced from the original manufacturer or authorized distributors?

All TSV522IST 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 TSV522IST meets industry standards.

7.What is the process for return or replacement of TSV522IST?

All TSV522IST units undergo pre-shipment inspection (PSI). If there is an issue with TSV522IST, 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 TSV522IST part is unused and in its original packaging.

Return procedure for TSV522IST:

1.Submit a request within 90 days.

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

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