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

STMicroelectronics TSX632IYST

Name: TSX632IYST
Brand: STMicroelectronics
SKU: TSX632IYST
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSX632IYST

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: TSX632IYST.pdf

Description:: IC CMOS 2 CIRCUIT 8MINISO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TSX632IYST from STMicroelectronics is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for micropower sensor signal conditioning in automotive and industrial systems. It delivers 200 kHz gain bandwidth, 45 µA supply current per channel at 16 V, 16 V maximum supply voltage, and 1 mV max input offset voltage (standard version), operating across –40°C to +125°C.

For engineers reviewing the TSX632IYST datasheet, TSX632IYST pinout, TSX632IYST application, or TSX632IYST equivalent, key selection criteria include ultra-low quiescent current, rail-to-rail I/O swing at low supply voltages (3.3 V), high common-mode rejection (>71 dB at 10 V), and AEC-Q100 qualification for automotive use.

Technical Context

The TSX632IYST implements a CMOS input stage with 1 pA typical input bias current and 1 TΩ input resistance, enabling direct interfacing with high-impedance sources like piezoresistive sensors and pH electrodes. Its rail-to-rail output stage delivers ±100 mV saturation voltage into 10 kΩ loads across full temperature range.

Internally compensated architecture provides stable unity-gain operation with 55° phase margin and 9 dB gain margin. The device supports single-supply operation from 3.3 V to 16 V and maintains 200 kHz GBP across supply and temperature, with input offset drift limited to 8 µV/°C over –40°C to +125°C.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	3.3 V to 16 V - enables direct interface with 3.3 V microcontrollers and 12 V automotive rails without level-shifting
Quiescent Current per Channel	45 µA typ / 60 µA max at 16 V - supports battery-powered sensor nodes with multi-year runtime
Gain Bandwidth Product	200 kHz typ - sufficient for DC–100 Hz sensor signal conditioning and active filtering up to second-order
Input Offset Voltage	1 mV max (standard version) - ensures ≤0.1% error in 1 V full-scale industrial analog front-ends
Input Bias Current	1 pA typ - preserves signal integrity when amplifying from >100 MΩ source impedances
Common-Mode Rejection Ratio	71 dB min at 10 V supply - rejects power rail noise in noisy industrial environments
Operating Temperature Range	–40°C to +125°C - qualified for under-hood automotive and factory-floor industrial deployment

Pinout & Package

TSX632IYST is housed in a MiniSO-8 package (3.0 mm × 4.9 mm, 1.25 mm height), a surface-mount SOIC variant with enhanced thermal performance (R_thJA = 190 °C/W) and AEC-Q100 compliance.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting Input (Channel A)	Differential input node for first op-amp; accepts signals down to V_CC– – 0.1 V
2	Non-inverting Input (Channel A)	Differential input node for first op-amp; supports rail-to-rail common-mode range
3	Output (Channel A)	Full rail-to-rail output swing (V_CC– + 70 mV to V_CC+ – 70 mV @ 10 kΩ load)
4	V_CC– (GND)	Negative supply terminal; referenced to system ground in single-supply configurations
5	V_CC+	Positive supply terminal; supports up to 16 V continuous operation
6	Inverting Input (Channel B)	Differential input node for second op-amp; electrically isolated from Channel A
7	Non-inverting Input (Channel B)	Differential input node for second op-amp; identical electrical specs to Pin 2
8	Output (Channel B)	Independent rail-to-rail output; capable of sourcing/sinking ≥30 mA at 16 V

Key Features

Feature	Design Value
Rail-to-rail input and output	Enables full dynamic range utilization in 3.3 V and 5 V systems without external level-shifting circuitry
Automotive qualification (AEC-Q100 Grade 1)	Validated for operation from –40°C to +125°C ambient, meeting automotive ESD (4 kV HBM) and latch-up (200 mA) requirements
Low input bias current (1 pA typ)	Minimizes voltage error across high-value feedback networks and preserves accuracy in charge-amplifier topologies
High ESD tolerance (4 kV HBM)	Reduces need for external protection components in assembly-line and field-deployed industrial modules
Stable with capacitive loads up to 470 pF	Eliminates need for isolation resistors in sensor cable drive applications (e.g., long traces to remote RTDs)

Applications

Industrial Sensor Interface

Automotive Cabin Pressure Sensing

Use Scenario: Amplifying low-level output from MEMS pressure transducers in programmable logic controllers and process monitors.

IC Role / Device Role / Timing Role: Dual-channel precision buffer and gain stage for differential bridge sensors, operating at 3.3 V from isolated DC-DC converters.

Use Value: 1 mV max V_os and 8 µV/°C drift ensure <±0.2% total error over temperature without calibration.

Use Scenario: Signal conditioning for cabin air pressure sensors in HVAC control units, exposed to wide thermal cycling.

IC Role / Device Role / Timing Role: Rail-to-rail input/output op-amp in a 5 V single-supply configuration, driving ADC inputs directly.

Use Value: AEC-Q100 qualification and 125°C operation guarantee reliability in under-dash mounting locations.

Medical Patient Monitoring

Active Low-Pass Filtering

Use Scenario: Front-end amplification of biopotential signals (e.g., ECG leads) in portable diagnostic devices.

IC Role / Device Role / Timing Role: First-stage instrumentation amplifier driver with ultra-low input current to avoid electrode polarization errors.

Use Value: 1 pA I_ib prevents DC drift in high-impedance electrode interfaces, preserving baseline stability.

Use Scenario: Second-order Sallen-Key low-pass filter (100 Hz cutoff) for anti-aliasing before SAR ADC sampling.

IC Role / Device Role / Timing Role: Unity-gain stable op-amp configured as active filter integrator with 200 kHz GBP and 55° phase margin.

Use Value: Stable response with 470 pF capacitive loads allows direct integration of ceramic filter capacitors without isolation resistors.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TSX632IST	Same silicon die, but in SO-8 (not MiniSO-8); R_thJA = 250 °C/W vs. 190 °C/W	Larger footprint and higher thermal resistance; less suitable for space-constrained automotive modules	Select TSX632IYST for miniaturized PCBs requiring tighter thermal management.
MCP6022-E/SN	Higher supply current (100 µA/channel), lower GBP (1 MHz), no AEC-Q100 qualification	Better bandwidth but unqualified for automotive; requires external ESD protection in harsh environments	Choose MCP6022-E/SN only for non-automotive industrial designs where bandwidth >200 kHz is mandatory.

Compared with TSX632IST and MCP6022-E/SN, TSX632IYST uniquely balances AEC-Q100 qualification, MiniSO-8 thermal efficiency, and sub-60 µA quiescent current-making it optimal for space- and power-constrained automotive sensor nodes.

Availability

TSX632IYST is available at Aetrix Electronics and suitable for automotive cabin sensing, industrial PLC analog input modules, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TSX632IYST 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 TSX63x series was developed specifically for ultra-low-power, high-precision signal conditioning in harsh-environment applications-emphasizing rail-to-rail operation, AEC-Q100 compliance, and robustness against ESD and thermal stress.

FAQ

Is TSX632IYST pin-compatible with standard SO-8 dual op-amps?

Yes, TSX632IYST uses the industry-standard MiniSO-8 footprint (3.0 mm × 4.9 mm), which matches SO-8 mechanical dimensions but features thinner profile and improved thermal resistance. Pin numbering and function align exactly with LM358, TLV2372, and TSX632IST-enabling drop-in replacement in existing layouts with no redesign required.

What is the maximum capacitive load the TSX632IYST can drive stably?

TSX632IYST remains unity-gain stable with capacitive loads up to 470 pF when configured as a follower or inverting amplifier, as verified in Figure 16 of the datasheet. For loads exceeding 470 pF, a series isolation resistor (R_iso) of ≥10 Ω is recommended-values scale per Figure 17, reaching ~10 kΩ at 10 nF.

Does TSX632IYST support true single-supply operation down to 3.3 V?

Yes. TSX632IYST operates fully specified from 3.3 V to 16 V, with rail-to-rail input extending to V_CC– – 0.1 V and output swinging within 70 mV of both rails into 10 kΩ loads. Input common-mode range includes ground at all supply voltages, enabling direct interfacing with 3.3 V ADC references and microcontroller GPIOs.

How does the input offset voltage drift behave over temperature?

TSX632IYST exhibits a maximum input offset voltage drift of 8 µV/°C across –40°C to +125°C, as specified in Table 4–7. This low drift-combined with 1 mV max initial V_os-ensures total offset error remains below ±2.4 mV over full temperature range, critical for uncalibrated industrial sensor front-ends.

TSX632IYST 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:: 0.12V/µs

Gain Bandwidth Product:: 200 kHz

-3db Bandwidth:: -

Current - Input Bias:: 1 pA

Voltage - Input Offset:: 1.6 mV

Current - Supply:: 45µA

Current - Output / Channel:: 92 mA

Voltage - Supply Span (Min):: 3.3 V

Voltage - Supply Span (Max):: 16 V

Operating Temperature:: -40°C ~ 125°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-MiniSO

TSX632IYST FAQ

1.How can I place an order for TSX632IYST through Aetrix?

Please submit a Request for Quotation (RFQ) for TSX632IYST 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 TSX632IYST reliable?

The price and inventory of TSX632IYST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX632IYST is usually 5 days.

3.What payment methods are accepted for TSX632IYST?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX632IYST transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSX632IYST?

TSX632IYST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSX632IYST 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 TSX632IYST?

For technical support, including TSX632IYST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX632IYST requirements.

6.How does Aetrix verify that TSX632IYST is sourced from the original manufacturer or authorized distributors?

All TSX632IYST 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 TSX632IYST meets industry standards.

7.What is the process for return or replacement of TSX632IYST?

All TSX632IYST units undergo pre-shipment inspection (PSI). If there is an issue with TSX632IYST, 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 TSX632IYST part is unused and in its original packaging.

Return procedure for TSX632IYST:

1.Submit a request within 90 days.

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

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