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

STMicroelectronics TSV612AID

Name: TSV612AID
Brand: STMicroelectronics
SKU: TSV612AID
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSV612AID

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: TSV612AID.pdf

Description:: IC CMOS 2 CIRCUIT 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:1,902

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Product details

Overview

TSV612AID 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 channel at 5 V, and 800 µV max input offset voltage (A-grade), operating from 1.5 V to 5.5 V supply - ideal for battery-powered smoke detectors and portable medical instrumentation.

For engineers reviewing the TSV612AID datasheet, TSV612AID pinout, TSV612AID application, or TSV612AID equivalent, key selection criteria include rail-to-rail I/O swing under 1.8 V supply, guaranteed unity-gain stability with capacitive loads ≤100 pF, low 1 pA input bias current for high-impedance sensor interfaces, and -40 °C to 85 °C industrial temperature operation.

Technical Context

The TSV612AID uses 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, with no phase reversal. Its output drives within 35 mV of both rails into 10 kΩ, supporting single-supply active filtering and precision transducer buffering.

Internally compensated for unity-gain stability, it achieves 62° phase margin at 5 V with 20 pF load, and its 0.04 V/µs slew rate and 105 nV/√Hz input noise are optimized for DC-coupled, low-frequency (<10 kHz) analog front-ends where power budget is constrained.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	1.5 V to 5.5 V - enables direct interface with Li-ion, coin-cell, and 3.3 V logic systems without LDO.
Supply Current per Channel	10.5 µA typ at 5 V - allows >1-year operation on 220 mAh coin cell in always-on smoke detector mode.
Gain Bandwidth Product	120 kHz - supports stable closed-loop gain up to 100× for slow-moving sensor signals (e.g., thermistor, gas sensor).
Input Offset Voltage (A-grade)	800 µV max - ensures <0.5% error in 0.1 V full-scale bridge sensor outputs without trimming.
Input Bias Current	1 pA typ - preserves signal integrity from high-Z sources like pH electrodes or piezoelectric sensors.
Rail-to-Rail I/O Swing	V_OL ≤ 16 mV / V_OH ≥ V_CC – 7 mV @ 10 kΩ - maximizes dynamic range in 1.8 V ADC reference designs.
Operating Temperature	-40 °C to +85 °C - qualified for industrial and consumer environmental chambers without derating.

Pinout & Package

TSV612AID is housed in an 8-pin MiniSO8 package (3.0 mm × 4.9 mm, 0.65 mm pitch), offering improved thermal performance (R_thJA = 190 °C/W) and board space savings over standard SO8.

Pin/Terminal	Circuit Role	Design Meaning
1 (OUT1)	Channel 1 output	Delivers rail-to-rail buffered signal; requires local 10 nF decoupling near pin 8 (V_CC+).
2 (IN1–)	Channel 1 inverting input	High-impedance node (1 pA bias); sensitive to PCB leakage - guard ring recommended.
3 (IN1+)	Channel 1 non-inverting input	Accepts common-mode voltages down to V_CC– – 0.1 V - enables ground-referenced sensor biasing.
4 (V_CC–)	Negative supply / ground	Reference return for both channels; must be low-impedance path to minimize PSRR degradation.
5 (IN2+)	Channel 2 non-inverting input	Independent high-Z input; usable for differential pair configuration with IN1+ and IN2–.
6 (IN2–)	Channel 2 inverting input	Matches IN1– specs; supports dual-channel instrumentation amp topology with external resistors.
7 (OUT2)	Channel 2 output	Electrically isolated from OUT1; supports independent gain stages or dual-sensor readout.
8 (V_CC+)	Positive supply	Accepts 1.5–5.5 V; internal ESD protection rated to 4 kV HBM - no external TVS required in most cases.

Key Features

Feature	Design Value
Rail-to-rail input stage	CMVR extends 0.1 V beyond rails - eliminates level-shifting ICs when interfacing 0–V_CC sensors.
Ultra-low input bias current	1 pA typ - reduces voltage error across 10 MΩ source impedance to <10 µV, critical for electrochemical sensors.
Guaranteed unity-gain stability	Stable with 100 pF capacitive load in follower mode - enables direct driving of ADC sample capacitors without isolation resistor.
Low-voltage operation	Functional at 1.5 V - supports single-cell alkaline or NiMH battery systems without voltage boost.
A-grade precision	800 µV max V_IO - meets medical-grade signal chain accuracy requirements for portable ECG front-ends.

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: Dual-channel transimpedance amplifier (TIA) and buffer - first stage converts chamber current to voltage; second stage conditions for ADC.

Use Value: 1 pA input bias prevents signal loss; 10 µA/channel current extends 10-year battery life; rail-to-rail output maximizes 1.8 V ADC utilization.

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

IC Role / Device Role / Timing Role: Instrumentation amplifier input stage and right-leg drive buffer - rejects common-mode motion artifacts while preserving microvolt-level differentials.

Use Value: 800 µV max V_IO ensures <1% baseline error; low 105 nV/√Hz noise maintains SNR >70 dB in 0.05–150 Hz band.

Capacitive Proximity Sensor Interface

Thermistor-Based Temperature Logger

Use Scenario: Detecting finger proximity via capacitance change in touchless UI for medical devices.

IC Role / Device Role / Timing Role: Charge-transfer integrator and comparator driver - converts ∆C to voltage ramp, then triggers threshold detection.

Use Value: Rail-to-rail input accepts full 0–V_CC ramp; 120 kHz GBW supports 10 ms response time; low power enables duty-cycled operation.

Use Scenario: Linearizing NTC thermistor output in wireless temperature loggers powered by CR2032 cells.

IC Role / Device Role / Timing Role: Precision voltage divider buffer and anti-aliasing filter - isolates high-impedance thermistor network from ADC loading.

Use Value: 1 pA bias avoids self-heating errors in 100 kΩ thermistors; 1.5 V min supply matches battery discharge curve; 85 °C rating covers enclosure thermal rise.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP6022-I/SN	Higher supply current (100 µA/ch), wider GBW (1 MHz), but only rail-to-rail output (not input).	Unsuitable for sub-2 V sensor biasing; better for higher-speed active filters.	Select when speed >100 kHz is required and supply >2.7 V is available.
LMV358IDR	Lower precision (3 mV V_IO max), no rail-to-rail input, 80 µA/ch supply current.	Cannot interface directly with ground-referenced sensors; higher power limits battery life.	Select only for cost-sensitive, non-precision applications with 2.7–5.5 V supply.

Compared with MCP6022-I/SN and LMV358IDR, TSV612AID uniquely combines rail-to-rail input *and* output at 10 µA/ch, enabling true single-supply operation below 1.8 V with sensor-grade accuracy - a capability neither alternative provides.

Availability

TSV612AID is available at Aetrix Electronics and suitable for battery-powered smoke detectors, portable ECG monitors, capacitive proximity sensors, and thermistor-based temperature loggers requiring stable component supply across extended product lifecycles.

Supply support for TSV612AID 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, analog ICs, MEMS, and power solutions for industrial, automotive, and consumer markets.

The TSV61x family was developed specifically for ultra-low-power, low-voltage analog signal conditioning in energy-constrained portable and sensor-based systems - emphasizing precision, rail-to-rail operation, and long-term reliability.

FAQ

Is TSV612AID unity-gain stable with capacitive loads?

Yes - TSV612AID is internally compensated for unity-gain stability and remains stable driving up to 100 pF capacitive loads in voltage-follower configuration, as verified in Figure 19 of the datasheet. For loads >100 pF, a series output resistor (e.g., 10–100 Ω) is recommended to maintain phase margin above 45°.

What is the maximum output current capability of TSV612AID?

At V_CC = 5 V, TSV612AID delivers ±49 mA short-circuit output current (I_source/I_sink), with linear operation up to ±35 mA into 10 kΩ. Output voltage swing degrades above ±35 mV from rails under heavy load, per Table 5's VOL/VOH specifications.

Does TSV612AID support operation below 1.8 V?

Yes - the device is fully specified from 1.5 V to 5.5 V. Electrical characteristics tables include data at 1.5 V, 1.8 V, 3.3 V, and 5 V. Performance metrics such as GBP (100 kHz min at 1.5 V) and supply current (6.5 µA min at 1.5 V) remain functional and guaranteed across this full range.

How does the A-grade (TSV612AID) differ from standard TSV612ID?

TSV612AID guarantees maximum input offset voltage of 800 µV (vs. 2 mV for TSV612ID) and tighter input offset drift (2 µV/°C). This A-grade binning is validated across -40 °C to +85 °C and enables precision applications like medical instrumentation where initial calibration drift must be minimized.

TSV612AID Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Tube

Product Status:: Obsolete

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-SOIC

TSV612AID FAQ

1.How can I place an order for TSV612AID through Aetrix?

Please submit a Request for Quotation (RFQ) for TSV612AID 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 TSV612AID reliable?

The price and inventory of TSV612AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV612AID is usually 5 days.

3.What payment methods are accepted for TSV612AID?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV612AID transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSV612AID?

TSV612AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSV612AID 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 TSV612AID?

For technical support, including TSV612AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV612AID requirements.

6.How does Aetrix verify that TSV612AID is sourced from the original manufacturer or authorized distributors?

All TSV612AID 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 TSV612AID meets industry standards.

7.What is the process for return or replacement of TSV612AID?

All TSV612AID units undergo pre-shipment inspection (PSI). If there is an issue with TSV612AID, 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 TSV612AID part is unused and in its original packaging.

Return procedure for TSV612AID:

1.Submit a request within 90 days.

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

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