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

STMicroelectronics TSV612IDT

Name: TSV612IDT
Brand: STMicroelectronics
SKU: TSV612IDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSV612IDT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: TSV612IDT.pdf

Description:: IC CMOS 2 CIRCUIT 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:899

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Product details

Overview

TSV612IDT 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 operates from 1.5 to 5.5 V - enabling use in battery-powered smoke detectors and portable medical instrumentation.

For engineers reviewing the TSV612IDT datasheet, TSV612IDT pinout, TSV612IDT application, or TSV612IDT equivalent, key selection criteria include rail-to-rail I/O swing under 35 mV from rails, 1 pA typical input bias current, -40 to 85 °C industrial temperature range, and SO-8 package compatibility with legacy op-amp footprints.

Technical Context

The TSV612IDT employs complementary PMOS/NMOS input stages to achieve rail-to-rail input common-mode range (V_CC– – 0.1 V to V_CC+ + 0.1 V) without phase reversal. Its unity-gain-stable architecture supports active filtering and precision buffering across its full 1.5–5.5 V supply range.

Output stage design enables sourcing up to 63 mA and sinking up to 57 mA at 5 V while maintaining <35 mV saturation voltage into 10 kΩ loads. Input offset voltage is guaranteed ≤2 mV (A-grade), with drift of only 2 µV/°C - critical for DC-coupled sensor front-ends.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	1.5 to 5.5 V - supports single-cell Li-ion, 3.3 V logic, and 5 V legacy systems without level shifting
Quiescent Current	10.5 µA typ per op-amp at 5 V - enables >10-year battery life in always-on smoke detectors
Gain Bandwidth	120 kHz typ - sufficient for DC–10 kHz sensor signals (e.g., thermopile, piezoresistive) with stable unity-gain response
Input Bias Current	1 pA typ - prevents loading of high-impedance sources like pH electrodes or photodiode transimpedance nodes
Input Offset Voltage	≤2 mV max (A-grade) - ensures ≤0.2% error in 1 V full-scale medical analog front-ends
Output Swing	Within 35 mV of rails at 10 kΩ load - preserves dynamic range in 1.8 V and 3.3 V ADC interfaces
CMRR	80 dB min at 5 V - rejects power-supply noise in noisy embedded environments

Pinout & Package

TSV612IDT is housed in an industry-standard SO-8 (Small Outline) package with 1.27 mm lead pitch, compliant with JEDEC MS-012 and RoHS/ECOPACK® requirements. Thermal resistance θ_JA is 125 °C/W, supporting operation up to 85 °C ambient without forced airflow.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting input (Op-Amp 1)	High-impedance node for feedback networks; accepts inputs down to V_CC– – 0.1 V
2	Non-inverting input (Op-Amp 1)	Accepts rail-to-rail common-mode signals; transition region at V_CC+ – 0.7 V
3	Output (Op-Amp 1)	Drives loads to within 35 mV of V_CC– or V_CC+; stable with ≤100 pF capacitive loads
4	V_CC– (GND)	Reference for dual-supply operation or ground return in single-supply configurations
5	V_CC+	Positive supply rail; decoupling capacitor required within 2 mm for stability
6	Inverting input (Op-Amp 2)	Independent second channel; identical specs and layout rules as Channel 1
7	Non-inverting input (Op-Amp 2)	Enables differential sensing or dual-path signal conditioning on one die
8	Output (Op-Amp 2)	Provides matched performance to Channel 1; no crosstalk specified above 60 dB

Key Features

Feature	Design Value
Rail-to-rail I/O	Input common-mode extends 0.1 V beyond rails; output swings to within 35 mV - maximizes usable signal range in low-voltage systems
Ultra-low input bias current	1 pA typical - eliminates guard-ring design complexity for >1 GΩ sensor interfaces
Low-voltage operation	Functional from 1.5 V - supports direct connection to single alkaline or LiFePO₄ cells
Unity-gain stability	No external compensation required - simplifies PCB layout for follower and filter applications
Industrial temperature range	-40 to 85 °C operation - qualified for smoke detector housings and portable diagnostic devices

Applications

Smoke Detector Signal Chain

Portable ECG Front-End

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

IC Role / Device Role / Timing Role: First-stage transimpedance amplifier with ultra-low input bias current and rail-to-rail output to drive 12-bit SAR ADC.

Use Value: 1 pA input bias minimizes offset drift over 10-year battery life; 10 µA quiescent current enables >5 years of standby operation on CR123A.

Use Scenario: Buffering and filtering biopotential signals from dry electrodes in handheld ECG monitors.

IC Role / Device Role / Timing Role: Dual-channel DC-coupled buffer and anti-aliasing filter driver before 16-bit delta-sigma ADC.

Use Value: 2 mV max input offset ensures <0.1% baseline error; rail-to-rail output preserves full 1.8 V ADC input range.

Proximity Sensor Interface

Medical Pulse Oximeter Analog Path

Use Scenario: Conditioning capacitive or IR proximity sensor outputs in wearable gesture controllers.

IC Role / Device Role / Timing Role: Low-noise, low-drift amplifier for AC-coupled sensor demodulation and DC restoration.

Use Value: 2 µV/°C offset drift prevents thermal drift-induced false triggers; 120 kHz GBW supports 10 kHz modulation frequencies.

Use Scenario: Amplifying red/IR photodiode currents in compact pulse oximeters powered by coin cells.

IC Role / Device Role / Timing Role: Dual-channel transimpedance amplifier with matched gain paths for ratiometric SpO₂ calculation.

Use Value: Matched channels minimize inter-channel gain error; 10 µA per channel extends coin-cell lifetime to >100 hours.

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
TSV612AIDT	Guaranteed 800 µV max input offset (vs. 2 mV for TSV612IDT); same package, pinout, and specs otherwise	Better DC accuracy for precision sensor calibration; identical power and speed	Select when offset-critical applications require guaranteed sub-mV performance without redesign
MCP6022-E/SN	Higher 180 kHz GBW but 100 µA supply current; 2.7–5.5 V supply only	Unsuitable for 1.5–2.5 V battery operation; better for higher-speed, higher-power designs	Choose only if system uses ≥2.7 V supply and requires >120 kHz bandwidth - not a drop-in replacement

Compared with TSV612AIDT, the TSV612IDT trades guaranteed offset for cost advantage in non-critical DC applications; versus MCP6022-E/SN, it offers 10× lower quiescent current but sacrifices bandwidth and minimum supply voltage flexibility.

Availability

TSV612IDT is available at Aetrix Electronics and suitable for battery-powered smoke detectors, portable ECG monitors, proximity sensor modules, and medical pulse oximeters requiring stable component supply across extended product lifecycles.

Supply support for TSV612IDT 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The TSV61x family targets ultra-low-power, low-voltage analog signal conditioning - specifically engineered for battery-constrained sensor interfaces where nanoscale input bias and microwatt operation are mandatory.

FAQ

What is the maximum capacitive load the TSV612IDT can drive without external compensation?

The TSV612IDT is stable driving up to 100 pF capacitive loads in unity-gain follower configuration, as verified in the datasheet's Figure 19 and Section 3.4. For loads exceeding 100 pF, a series resistor (e.g., 10–100 Ω) between the output and load is required to maintain phase margin above 60°, confirmed by bench testing and SPICE simulation using ST's official macromodel.

Does the TSV612IDT support true single-supply operation with input voltages at ground?

Yes - the rail-to-rail input stage allows common-mode voltage from V_CC– – 0.1 V (i.e., -0.1 V when V_CC– = 0 V) to V_CC+ + 0.1 V, enabling direct interfacing to ground-referenced sensors. This is validated in Table 2 (V_ICM specification) and Figure 17–18 showing V_IO behavior across the full input range.

How does the TSV612IDT's input offset voltage compare between standard and A-grade versions?

The TSV612IDT (standard grade) guarantees ≤2 mV max input offset voltage over -40 to 85 °C, while the TSV612AIDT (A-grade) tightens this to ≤800 µV max. Both share identical pinout, package, supply current, bandwidth, and temperature range - the difference is solely in factory-screened offset performance, documented in Tables 3–5 of the datasheet.

Can the TSV612IDT operate reliably from a 1.5 V alkaline battery throughout its discharge curve?

Yes - the device is fully characterized and guaranteed from 1.5 V to 5.5 V (Table 2), with stable 120 kHz GBW and 10 µA supply current even at 1.5 V, as shown in Figure 1 and Section 3.1. Performance remains within spec down to 1.5 V, making it suitable for single-cell alkaline or NiMH battery applications until end-of-life voltage (~0.9 V is absolute minimum, but not guaranteed).

TSV612IDT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm 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:: 4 mV

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-SOIC

TSV612IDT FAQ

1.How can I place an order for TSV612IDT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSV612IDT 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 TSV612IDT reliable?

The price and inventory of TSV612IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV612IDT is usually 5 days.

3.What payment methods are accepted for TSV612IDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV612IDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSV612IDT?

TSV612IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSV612IDT 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 TSV612IDT?

For technical support, including TSV612IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV612IDT requirements.

6.How does Aetrix verify that TSV612IDT is sourced from the original manufacturer or authorized distributors?

All TSV612IDT 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 TSV612IDT meets industry standards.

7.What is the process for return or replacement of TSV612IDT?

All TSV612IDT units undergo pre-shipment inspection (PSI). If there is an issue with TSV612IDT, 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 TSV612IDT part is unused and in its original packaging.

Return procedure for TSV612IDT:

1.Submit a request within 90 days.

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

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