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

STMicroelectronics TSV612AIST

Name: TSV612AIST
Brand: STMicroelectronics
SKU: TSV612AIST
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSV612AIST

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: TSV612AIST.pdf

Description:: IC CMOS 2 CIRCUIT 8MINISO

Quantity:: RFQ Add To RFQ list

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Inventory:968

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Product details

Overview

TSV612AIST from STMicroelectronics is a dual rail-to-rail input/output CMOS operational amplifier optimized for ultra-low-power, low-voltage sensor signal conditioning. It delivers 120 kHz gain bandwidth, 10 µA supply current per amplifier at 5 V, and 800 µV max input offset voltage (A-grade), operating from 1.5 to 5.5 V in battery-powered medical and industrial sensing systems.

For engineers reviewing the TSV612AIST datasheet, TSV612AIST pinout, TSV612AIST application, or TSV612AIST equivalent, key selection criteria include rail-to-rail I/O swing under 1.8 V supply, sub-1 pA input bias current for high-impedance transducer interfaces, unity-gain stability with capacitive loads up to 100 pF, and guaranteed performance across –40 °C to +85 °C.

Technical Context

The TSV612AIST employs complementary PMOS/NMOS input stages enabling true rail-to-rail input common-mode range from (V_CC–) –0.1 V to (V_CC+) +0.1 V. Its output drives within 35 mV of both rails into 10 kΩ, supporting full dynamic range in single-supply configurations.

It features unity-gain stable compensation with 62° phase margin at 5 V, 0.04 V/µs slew rate, and 105 nV/√Hz input voltage noise at 1 kHz - all while maintaining 76–93 dB supply voltage rejection ratio across 1.8–5 V operation.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	1.5 to 5.5 V - enables direct interface with Li-ion, coin-cell, and 3.3 V logic without LDO.
Supply Current	10.5 µA typ per op-amp at 5 V - supports >10-year battery life in always-on smoke detectors.
Gain Bandwidth	120 kHz typ - sufficient for DC–10 kHz sensor amplification (e.g., thermopile, piezoresistive) with stability margin.
Input Offset Voltage	800 µV max (A version) - ensures <0.1% error in 0.8 V full-scale bridge sensor outputs.
Input Bias Current	1 pA typ - prevents leakage-induced drift in pH electrodes and photodiode transimpedance stages.
CMRR	80 dB min at 5 V - rejects common-mode noise in noisy industrial 24 V supply environments.
Output Swing	Within 35 mV of rails into 10 kΩ - preserves >98% dynamic range in 1.8 V ADC front-ends.

Pinout & Package

TSV612AIST is housed in a MiniSO-8 package (3.0 × 4.9 mm, 0.65 mm pitch), offering improved thermal resistance (190 °C/W) and board space savings over standard SO-8.

Pin/Terminal	Circuit Role	Design Meaning
1	In1−	Inverting input of amplifier 1 - connects to feedback network in inverting configurations.
2	In1+	Non-inverting input of amplifier 1 - ties to reference or sensor in non-inverting buffer/gain stages.
3	V_CC−	Negative supply rail (GND in single-supply) - requires local 10 nF decoupling per ST layout guidance.
4	Out1	Output of amplifier 1 - drives ADC inputs, filters, or low-power comparators directly.
5	Out2	Output of amplifier 2 - enables dual-path signal processing (e.g., differential drive, active filtering).
6	In2−	Inverting input of amplifier 2 - used for second sensor channel or feedback loop.
7	In2+	Non-inverting input of amplifier 2 - supports independent biasing for matched dual-sensor interfaces.
8	V_CC+	Positive supply rail - accepts 1.5–5.5 V; internal ESD protection rated to 4 kV HBM.

Key Features

Feature	Design Value
Rail-to-rail I/O	Enables full-scale signal capture from 0 V to V_CC without level-shifting circuitry in portable devices.
Ultra-low input bias current	1 pA typ eliminates loading errors on high-Z sources like glass pH electrodes and MEMS capacitive sensors.
Unity-gain stable	Operates reliably as buffer or follower without external compensation, simplifying PCB layout for space-constrained designs.
Low-voltage operation	Functional down to 1.5 V allows direct use with single alkaline or NiMH cells without voltage boosters.
Guaranteed A-grade offset	800 µV max ensures consistent calibration across production batches in medical instrumentation.

Applications

Smoke Detector Signal Chain

Portable ECG Front-End

Use Scenario: Amplifies weak ionization chamber current (pA–nA) in battery-operated residential smoke alarms.

IC Role / Device Role / Timing Role: First-stage transimpedance amplifier with ultra-low input bias current and rail-to-rail output swing into 1.8 V ADC.

Use Value: Enables >5-year shelf life on CR123A battery by consuming only 21 µA total for dual-channel signal path.

Use Scenario: Conditioned biopotential signals from dry electrodes in handheld ECG monitors.

IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier driver with matched offset and low noise for differential lead measurement.

Use Value: Maintains <1 µV RMS input-referred noise and <0.5% gain error across –40 °C to +85 °C for clinical-grade accuracy.

Industrial Proximity Sensor

Medical Infusion Pump Pressure Sensing

Use Scenario: Amplifies millivolt-level output from inductive proximity switches in factory automation panels.

IC Role / Device Role / Timing Role: Low-drift, rail-to-rail output stage driving SAR ADC with 12-bit resolution.

Use Value: Delivers 0.02% THD+N at 1 kHz and 80 dB CMRR to reject 50/60 Hz mains interference in unshielded enclosures.

Use Scenario: Interfaces piezoresistive pressure transducers in disposable infusion pump cartridges.

IC Role / Device Role / Timing Role: Dual-op-amp configuration: one as precision zero-drift amplifier, one as active filter for pulse artifact suppression.

Use Value: Achieves ±0.25% full-scale accuracy over temperature using A-grade offset and 2 µV/°C drift specification.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP6022-I/SN	Higher supply current (100 µA), 1 MHz GBW, no A-grade offset binning	Better for higher-speed active filtering but unsuitable for multi-year battery life	Select when bandwidth >100 kHz required and power budget allows 10× higher ICC
LMV358IDR	Wider supply range (2.7–5.5 V), 1 MHz GBW, 3 mV max Vio, no rail-to-rail input	Acceptable for 3.3 V systems with mid-rail common-mode but fails near-rail sensor signals	Choose only if input common-mode never approaches VCC or GND and offset tolerance >3 mV is acceptable

Compared with MCP6022-I/SN and LMV358IDR, TSV612AIST uniquely combines sub-10 µA ICC, rail-to-rail input *and* output, and A-grade 800 µV Vio - making it irreplaceable for long-life, low-voltage, high-precision analog front-ends where every microamp and millivolt matters.

Availability

TSV612AIST is available at Aetrix Electronics and suitable for battery-powered medical devices, industrial smoke detection systems, and portable sensor modules requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TSV612AIST 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 analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The TSV61x family was developed specifically for ultra-low-power, rail-to-rail signal conditioning in energy-constrained sensor nodes and portable instrumentation - prioritizing micropower operation, wide supply flexibility, and precision at sub-2 V operation.

FAQ

What is the maximum capacitive load the TSV612AIST can drive without external compensation?

The TSV612AIST is stable driving up to 100 pF capacitive load in unity-gain follower configuration, as verified in ST's characterization data (Figure 19). For loads exceeding 100 pF, ST recommends adding a series resistor (e.g., 10–100 Ω) between the output and load to restore phase margin - values depend on exact capacitance and must be validated via bench testing.

Does the TSV612AIST support true rail-to-rail input at 1.5 V supply?

Yes. The input common-mode range extends from (V_CC−) −0.1 V to (V_CC+) +0.1 V across the full 1.5–5.5 V supply range, including at 1.5 V. This is enabled by complementary PMOS/NMOS input pairs, allowing valid operation even when input signals reach GND or V_CC, with no phase reversal.

How does the A-grade (TSV612AIST) differ from standard TSV612IST in production testing?

The "A" suffix denotes enhanced screening: input offset voltage is binned to ≤800 µV max (vs. ≤2 mV for standard grade) and tested across –40 °C to +85 °C. Both versions share identical pinout, package, and electrical specs except for this tighter Vio guarantee - critical for precision sensor calibration without trimming.

Can the TSV612AIST operate from a single 1.5 V alkaline cell throughout its discharge curve?

Yes. The device functions down to 1.5 V minimum supply and maintains specified performance (e.g., 120 kHz GBW, rail-to-rail I/O) across the full 1.5–5.5 V range. Its 10.5 µA ICC at 5 V scales linearly - consuming ~7 µA at 1.5 V - enabling reliable operation from fresh to depleted alkaline cells (1.5 V → 0.9 V) when paired with appropriate brown-out detection.

TSV612AIST 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:: 0.04V/µs

Gain Bandwidth Product:: 120 kHz

-3db Bandwidth:: -

Current - Input Bias:: 1 pA

Voltage - Input Offset:: 800 µV

Current - Supply:: 10.5µA

Current - Output / Channel:: 63 mA

Voltage - Supply Span (Min):: 1.5 V

Voltage - Supply Span (Max):: 5.5 V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-MiniSO

TSV612AIST FAQ

1.How can I place an order for TSV612AIST through Aetrix?

Please submit a Request for Quotation (RFQ) for TSV612AIST 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 TSV612AIST reliable?

The price and inventory of TSV612AIST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV612AIST is usually 5 days.

3.What payment methods are accepted for TSV612AIST?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV612AIST transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSV612AIST?

TSV612AIST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSV612AIST 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 TSV612AIST?

For technical support, including TSV612AIST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV612AIST requirements.

6.How does Aetrix verify that TSV612AIST is sourced from the original manufacturer or authorized distributors?

All TSV612AIST 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 TSV612AIST meets industry standards.

7.What is the process for return or replacement of TSV612AIST?

All TSV612AIST units undergo pre-shipment inspection (PSI). If there is an issue with TSV612AIST, 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 TSV612AIST part is unused and in its original packaging.

Return procedure for TSV612AIST:

1.Submit a request within 90 days.

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

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