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STMicroelectronics TSX632IQ2T
- Part No.:
- TSX632IQ2T
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN
- Datasheet:
-
TSX632IQ2T.pdf
- Description:
- IC CMOS 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,388
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Product details
Overview
TSX632IQ2T from STMicroelectronics is a dual, 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 amplifier at 16 V, ±500 µV max offset voltage (A-grade), 1 pA typical input bias current, and operates from 3.3 V to 16 V - enabling direct interfacing with high-impedance pH, thermopile, or bridge sensors in battery-powered modules.
For engineers reviewing the TSX632IQ2T datasheet, TSX632IQ2T pinout, TSX632IQ2T application, or TSX632IQ2T equivalent, key selection criteria include its guaranteed 125 °C operation, 4 kV HBM ESD rating, rail-to-rail swing into 10 kΩ loads, and low 5 µVpp 0.1–10 Hz noise - critical for precision analog front-ends in harsh-environment monitoring systems.
Technical Context
The TSX632IQ2T implements a CMOS input stage with ultra-low input bias current (1 pA typ) and rail-to-rail common-mode input range (VCC−0.1 V to VCC+0.1 V), supporting direct connection to sensors operating near supply rails. Its folded-cascode output stage enables true rail-to-rail output swing with 70 mV headroom at 10 kΩ load and 25 °C.
Internally compensated for unity-gain stability across 3.3–16 V supply, it achieves 55° phase margin and 9 dB gain margin with 100 pF capacitive load. The device uses proprietary trimming to achieve ≤500 µV max VIO (A-grade) and maintains <8 µV/°C drift over −40 to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3 V to 16 V - supports direct integration into 12 V automotive and wide-input industrial power domains without LDO pre-regulation. |
| Quiescent Current | 45 µA per amplifier (typ) at 16 V - enables multi-channel sensing nodes with sub-100 µA total system bias current. |
| Gain Bandwidth Product | 200 kHz (typ) - sufficient for DC–100 Hz sensor signal conditioning (e.g., strain gauges, RTDs) with stable closed-loop response. |
| Input Offset Voltage | ±500 µV max (TSX632A grade) - reduces initial calibration burden in 12-bit ADC interfaces requiring <1 LSB error at 3.3 V full-scale. |
| Input Bias Current | 1 pA (typ) - preserves signal integrity from >1 GΩ source impedances (e.g., piezoelectric accelerometers, ion-selective electrodes). |
| Common-Mode Range | VCC−0.1 V to VCC+0.1 V - allows direct buffering of signals referenced to VCC or ground in single-supply configurations. |
| ESD Rating | 4 kV HBM - meets ISO 10605 requirements for automotive module-level transient immunity without external protection. |
Pinout & Package
TSX632IQ2T 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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance node accepting differential signal; supports biasing via MΩ-range resistors without significant error. |
| 2 | Non-inverting Input (Amplifier A) | Accepts reference or sensor signal; rail-to-rail common-mode range enables direct connection to grounded or VCC-referenced sources. |
| 3 | Output (Amplifier A) | Delivers rail-to-rail swing (VOUT = 70 mV to VCC−70 mV @ 10 kΩ) with 4.3 mA sink/source capability at 25 °C. |
| 4 | GND | Power and signal reference plane; requires low-inductance connection to minimize PSRR degradation at high frequencies. |
| 5 | Output (Amplifier B) | Independent output stage; shares same supply and thermal characteristics as Amp A - enables matched dual-channel filtering. |
| 6 | Non-inverting Input (Amplifier B) | Electrically identical to Pin 2; supports differential pair configuration or independent sensor channel buffering. |
| 7 | Inverting Input (Amplifier B) | Matches Pin 1 performance; enables precise gain-setting with external resistors without input current-induced offset. |
| 8 | VCC | Single positive supply input; internal ESD protection clamps to GND and VCC; decoupling capacitor required within 1 cm. |
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 level-shifting circuitry for sensor outputs. |
| Automotive qualification | AEC-Q100 Grade 1 (−40 °C to +125 °C) with 4 kV HBM ESD - certified for under-hood and chassis-mounted control units. |
| Low 0.1–10 Hz noise | 5 µVpp - minimizes baseline drift in DC-coupled medical instrumentation (e.g., ECG front-ends) and precision weight scales. |
| High CMRR | 79 dB (typ) at 25 °C - rejects common-mode interference from noisy 12 V power rails in industrial PLC analog inputs. |
| Stable with capacitive loads | Drives up to 100 pF directly without oscillation - simplifies anti-aliasing filter design and eliminates need for isolation resistors. |
Applications
| Industrial Signal Conditioning | Automotive Cabin Sensors |
|---|---|
Use Scenario: Amplifying low-level mV outputs from 350 Ω strain gauge bridges in factory-floor load cells. IC Role / Device Role / Timing Role: Dual op-amp configured as precision instrumentation amplifier front-end with matched gain-setting resistors. Use Value: 1 pA input bias current prevents resistor-divider errors; 500 µV max VIO ensures <0.015% gain error at 10 mV input. | Use Scenario: Buffering thermistor voltage dividers in HVAC cabin temperature modules exposed to 125 °C ambient. IC Role / Device Role / Timing Role: Rail-to-rail buffer isolating NTC network from microcontroller ADC input while rejecting 12 V supply ripple. Use Value: 79 dB CMRR suppresses conducted noise from blower motor PWM; 125 °C rating eliminates derating calculations. |
| Medical Sensor Interfaces | High-Impedance Electrochemical Sensors |
Use Scenario: Front-end amplification of pH electrode signals (≥1 GΩ source impedance) in portable blood gas analyzers. IC Role / Device Role / Timing Role: Ultra-low-bias non-inverting amplifier with guarded trace layout to prevent leakage paths. Use Value: 1 pA input bias current limits measurement error to <1 mV over 12-hour calibration cycle at 25 °C. | Use Scenario: Signal conditioning for ion-selective field-effect transistors (ISFETs) used in water quality monitors. IC Role / Device Role / Timing Role: DC-coupled follower with active guard driving shield around high-Z sensor traces. Use Value: 5 µVpp 0.1–10 Hz noise ensures <0.1 pH resolution; rail-to-rail output drives 10-bit SAR ADC reference range fully. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSX632IST | Same die in SO-8 package; 190 °C/W RθJA vs. DFN's 120 °C/W; 2.5× larger footprint. | Limited to lower-power industrial boards where thermal dissipation is not constrained. | Select when legacy SO-8 layout compatibility outweighs size/thermal advantages of DFN. |
| MCP6022-E/SN | Higher 100 µA supply current; 1 MHz GBP; 3 mV max VIO; no AEC-Q100 qualification. | Suitable for cost-sensitive consumer electronics but not automotive or extended-temperature industrial use. | Choose only if bandwidth >200 kHz is mandatory and temperature range ≤85 °C suffices. |
Compared with TSX632IST and MCP6022-E/SN, TSX632IQ2T uniquely combines AEC-Q100 Grade 1 qualification, 45 µA quiescent current, and 500 µV max offset in a thermally efficient 2×2 mm DFN - making it the sole option for space-constrained, high-reliability automotive sensor nodes requiring sub-1 mV DC accuracy.
Availability
TSX632IQ2T is available at Aetrix Electronics and suitable for automotive cabin sensors, industrial load-cell interfaces, portable medical diagnostics, and environmental monitoring systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TSX632IQ2T 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 MEMS products for industrial, automotive, and consumer markets.
The TSX63x series was developed specifically for ultra-low-power, high-precision analog signal conditioning in harsh environments - targeting automotive sensor fusion, industrial IoT edge nodes, and portable medical devices demanding rail-to-rail operation and AEC-Q100 compliance.
FAQ
What is the maximum capacitive load the TSX632IQ2T can drive without external compensation?
The TSX632IQ2T is internally compensated and stable with capacitive loads up to 100 pF when driving a 100 kΩ load, as verified in Figure 16 of the datasheet. For loads exceeding 100 pF, a series isolation resistor (Riso) of ≥10 Ω is recommended to maintain phase margin above 45°, per Figure 17.
Does TSX632IQ2T support operation at 3.3 V supply with rail-to-rail input and output?
Yes. At VCC = 3.3 V, the TSX632IQ2T guarantees rail-to-rail input (VIN = −0.1 V to 3.4 V) and output (VOUT = 70 mV to 3.23 V into 10 kΩ), with 45 µA supply current and 200 kHz GBP - confirmed in Tables 4 and Figures 10–11 of the datasheet.
How does the input offset voltage drift behave over temperature for TSX632IQ2T?
The TSX632IQ2T exhibits a maximum input offset voltage drift of 8 µV/°C over −40 °C to +125 °C (Table 4–7), with typical distribution centered at 1 µV/°C (Figure 6). This low drift ensures <1 mV total VIO variation across the full automotive temperature range.
Is the TSX632IQ2T pin-compatible with other dual op-amps in DFN-8 packages?
No. TSX632IQ2T uses a proprietary pinout (Pin 1 = Inverting Input A, Pin 2 = Non-inverting Input A, etc.) that differs from industry-standard dual op-amps like MCP6022 or LMV358 in DFN-8. Layout redesign is required for substitution - refer to Figure 1 in the datasheet for exact mapping.
TSX632IQ2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-WFDFN
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x2)
TSX632IQ2T FAQ
1.How can I place an order for TSX632IQ2T through Aetrix?
Please submit a Request for Quotation (RFQ) for TSX632IQ2T 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 TSX632IQ2T reliable?
The price and inventory of TSX632IQ2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX632IQ2T is usually 5 days.
3.What payment methods are accepted for TSX632IQ2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX632IQ2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSX632IQ2T?
TSX632IQ2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSX632IQ2T 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 TSX632IQ2T?
For technical support, including TSX632IQ2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX632IQ2T requirements.
6.How does Aetrix verify that TSX632IQ2T is sourced from the original manufacturer or authorized distributors?
All TSX632IQ2T 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 TSX632IQ2T meets industry standards.
7.What is the process for return or replacement of TSX632IQ2T?
All TSX632IQ2T units undergo pre-shipment inspection (PSI). If there is an issue with TSX632IQ2T, 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 TSX632IQ2T part is unused and in its original packaging.
Return procedure for TSX632IQ2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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