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STMicroelectronics TSX632AIYST
- Part No.:
- TSX632AIYST
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TSX632AIYST.pdf
- Description:
- IC CMOS 2 CIRCUIT 8MINISO
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
TSX632AIYST 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, ±500 µV max input offset voltage (A-grade), and operates from 3.3 V to 16 V supply rails - enabling direct interfacing with high-impedance pH, thermopile, or bridge sensors in battery-powered telematics modules.
For engineers reviewing the TSX632AIYST datasheet, TSX632AIYST pinout, TSX632AIYST application, or TSX632AIYST equivalent, key selection criteria include its A-grade low-offset performance at extended temperature (–40°C to +125°C), rail-to-rail swing into 10 kΩ loads, and guaranteed 1 pA typical input bias current - critical for precision transducer front-ends where leakage-induced error must be minimized.
Technical Context
The TSX632AIYST implements a CMOS input stage with complementary differential pairs enabling true rail-to-rail common-mode input range (VCC−0.1 V to VCC+0.1 V) and output swing within 70 mV of either rail under 10 kΩ load. Its 200 kHz gain-bandwidth product and 0.12 V/µs slew rate support stable unity-gain follower and first-order active filter configurations without phase reversal.
Designed for automotive qualification (AEC-Q100 Grade 1), it features 4 kV HBM ESD tolerance, 1 TΩ input resistance, and 5 pF input capacitance - ensuring robust operation in noisy engine-control or chassis-sensing environments while preserving signal integrity from ultra-high-impedance sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3 V to 16 V - supports direct connection to 12 V automotive batteries and 3.3 V microcontroller analog domains without level-shifting. |
| Quiescent Current | 45 µA per channel typ. at 16 V - enables multi-year operation in always-on vehicle event recorders or wireless sensor nodes. |
| Input Offset Voltage | ±500 µV max (A-grade, 25°C) - reduces DC error in 24-bit sigma-delta ADC front-ends used in precision pressure sensing. |
| Gain Bandwidth Product | 200 kHz typ. - sufficient for anti-aliasing filters and sensor linearization circuits up to ~20 kHz signal bandwidth. |
| Input Bias Current | 1 pA typ. - prevents voltage drop across >100 MΩ source impedances (e.g., glass pH electrodes). |
| Common-Mode Range | VCC−0.1 V to VCC+0.1 V - allows direct measurement of signals referenced to battery ground or VCC in single-supply systems. |
| Output Drive | ±35 mA sink/source min. at 16 V - drives 2 kΩ loads while maintaining rail-to-rail linearity, suitable for driving ADC reference buffers or LED bias circuits. |
Pinout & Package
TSX632AIYST is housed in a 8-pin DFN package (2 mm × 2 mm, 0.5 mm pitch) with wettable flanks, optimized for automated optical inspection and high-density PCB layouts in automotive ECUs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Ch1) | Differential node for Ch1 feedback path; 1 pA bias current minimizes error with high-Z sources. |
| 2 | Non-inverting Input (Ch1) | High-impedance sensor interface point; rail-to-rail common-mode range accepts signals from 0 V to VCC. |
| 3 | Output (Ch1) | Rail-to-rail output capable of sourcing/sinking ≥35 mA at 16 V - drives ADC input stages or low-power comparators directly. |
| 4 | GND | Power and signal reference plane; DFN thermal pad connects internally to GND for enhanced thermal dissipation. |
| 5 | Output (Ch2) | Independent Ch2 output; enables dual-sensor monitoring (e.g., temperature + humidity) on single IC. |
| 6 | Non-inverting Input (Ch2) | Second high-Z sensor input; identical electrical specs to Pin 2 for matched channel performance. |
| 7 | Inverting Input (Ch2) | Ch2 feedback node; pin-compatible with industry-standard dual op-amp footprints for design reuse. |
| 8 | VCC | Positive supply rail; 16 V absolute max rating supports transient-tolerant operation in 12 V automotive systems. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization in 3.3 V–16 V single-supply systems, eliminating need for dual supplies in sensor signal chains. |
| A-grade offset voltage | ±500 µV max at 25°C ensures <0.01% gain error in 50 mV full-scale thermocouple amplifiers without trimming. |
| 1 pA input bias current | Prevents >50 mV error across 50 GΩ source impedances (e.g., piezoelectric accelerometers), preserving signal fidelity. |
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C) and 4 kV HBM ESD rating ensure reliability in under-hood and chassis-mounted modules. |
| 200 kHz GBP | Supports stable closed-loop gain ≥100 for 2 kHz bandwidth applications like active low-pass filtering in motor current sensing. |
Applications
| Automotive Cabin Air Quality Sensor | Industrial Thermopile Temperature Monitor |
|---|---|
Use Scenario: Detecting CO₂ and VOC levels via NDIR spectroscopy with dual-wavelength photodiode outputs. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end: Ch1 conditions reference photodiode signal, Ch2 conditions measurement photodiode signal. Use Value: Matched A-grade offset and rail-to-rail swing enable <0.1% ratiometric error between channels over –40°C to +85°C, critical for ppm-level gas concentration accuracy. | Use Scenario: Non-contact temperature measurement in factory automation using thermopile IR sensors with <100 nA dark current. IC Role / Device Role / Timing Role: Transimpedance amplifier converting thermopile current to voltage, followed by rail-to-rail buffer driving 24-bit ΣΔ ADC. Use Value: 1 pA input bias current prevents >100 µV offset drift from sensor leakage, maintaining ±0.5°C accuracy across 10-year product lifetime. |
| Medical Disposable Pulse Oximeter | Battery-Powered Industrial Strain Gauge Node |
Use Scenario: Wearable pulse oximetry requiring ultra-low power and high SNR for red/IR photoplethysmography (PPG) signal extraction. IC Role / Device Role / Timing Role: Dual-channel transimpedance amplifier for synchronized red and IR LED photodiode signals, operating from coin-cell supply. Use Value: 45 µA per channel quiescent current extends battery life to >12 months while 200 kHz GBP preserves PPG waveform fidelity up to 10 Hz heart-rate harmonics. | Use Scenario: Wireless structural health monitoring using Wheatstone bridge strain gauges in remote infrastructure. IC Role / Device Role / Timing Role: Precision bridge amplifier with programmable gain, followed by rail-to-rail output stage driving SAR ADC reference input. Use Value: ±500 µV max offset and 79 dB CMRR suppress bridge imbalance errors, enabling <1 µε resolution without hardware calibration. |
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 |
|---|---|---|---|
| TSX632IYST | Standard grade: ±1 mV max offset (vs. ±500 µV for AIYST); same package, pinout, and power specs. | Suitable for cost-sensitive industrial controls where <0.02% DC error is acceptable. | Select when offset-critical medical or automotive AEC-Q100 compliance is not required. |
| LMV358IDGKR | Higher 80 µA supply current, lower 1 MHz GBP, no A-grade option; SOIC-8 package only. | Targeted at general-purpose consumer electronics, not automotive or precision sensor use. | Choose only for non-automotive designs needing higher speed but tolerating higher power and reduced offset stability. |
Compared with TSX632IYST, the TSX632AIYST provides tighter offset control essential for ratiometric measurements, while LMV358IDGKR trades precision and power efficiency for broader availability and higher bandwidth - making TSX632AIYST the optimal choice for AEC-Q100-compliant, micropower sensor interfaces.
Availability
TSX632AIYST is available at Aetrix Electronics and suitable for automotive cabin air quality sensors, industrial thermopile temperature monitors, medical disposable pulse oximeters, and battery-powered strain gauge nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TSX632AIYST 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, specializing in automotive, industrial, and power management solutions with vertical manufacturing capabilities.
The TSX63x series belongs to ST's precision analog portfolio, engineered specifically for micropower, rail-to-rail signal conditioning in harsh-environment sensor interfaces - emphasizing low offset drift, ultra-low input bias, and AEC-Q100 qualification.
FAQ
What is the maximum capacitive load the TSX632AIYST can drive stably?
The TSX632AIYST maintains stability with ≤100 pF capacitive load when configured as a unity-gain follower with 100 kΩ load. For larger loads (e.g., 470 pF), a series isolation resistor (Riso ≥100 Ω) is required at the output to prevent peaking or oscillation, as validated in Figure 17 of the datasheet.
Does TSX632AIYST support operation at 3.3 V supply?
Yes - the TSX632AIYST is fully specified from 3.3 V to 16 V supply. At 3.3 V, it delivers 45 µA typical supply current per channel, 200 kHz GBP, and rail-to-rail output swing within 70 mV of each rail into 10 kΩ, making it ideal for low-voltage IoT sensor nodes.
How does the input offset voltage drift with temperature?
The TSX632AIYST exhibits a maximum input offset voltage drift of 8 µV/°C over –40°C to +125°C (Table 4–7). At 125°C, total offset remains ≤1500 µV for A-grade units, enabling accurate DC-coupled measurements in under-hood automotive applications without external calibration.
Is the DFN8 2x2 package of TSX632AIYST compatible with reflow soldering per J-STD-020?
Yes - the TSX632AIYST's DFN8 2x2 package is qualified for standard lead-free reflow profiles (peak temperature 260°C, 20–40 sec dwell), including JEDEC J-STD-020 moisture sensitivity level 1 (MSL1), allowing safe assembly in high-volume SMT lines without baking.
TSX632AIYST 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:
- 700 µV
- 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
TSX632AIYST FAQ
1.How can I place an order for TSX632AIYST through Aetrix?
Please submit a Request for Quotation (RFQ) for TSX632AIYST 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 TSX632AIYST reliable?
The price and inventory of TSX632AIYST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX632AIYST is usually 5 days.
3.What payment methods are accepted for TSX632AIYST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX632AIYST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSX632AIYST?
TSX632AIYST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSX632AIYST 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 TSX632AIYST?
For technical support, including TSX632AIYST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX632AIYST requirements.
6.How does Aetrix verify that TSX632AIYST is sourced from the original manufacturer or authorized distributors?
All TSX632AIYST 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 TSX632AIYST meets industry standards.
7.What is the process for return or replacement of TSX632AIYST?
All TSX632AIYST units undergo pre-shipment inspection (PSI). If there is an issue with TSX632AIYST, 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 TSX632AIYST part is unused and in its original packaging.
Return procedure for TSX632AIYST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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