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STMicroelectronics TSX712IST
- Part No.:
- TSX712IST
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TSX712IST.pdf
- Description:
- IC CMOS 2 CIRCUIT 8MINISO
- Quantity:
- Payment:
- Shipping:
Inventory:2,829
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Product details
Overview
TSX712IST from STMicroelectronics is a dual, precision rail-to-rail input/output CMOS operational amplifier in MiniSO-8 package, featuring 200 µV max input offset voltage, 2.7 MHz gain bandwidth product, 2.7–16 V supply range, 50 pA max input bias current, and operation from –40 °C to 125 °C. It enables high-accuracy current sensing (both high- and low-side), DAC buffering, and battery-powered instrumentation where rail-to-rail swing and low drift are critical.
For engineers reviewing the TSX712IST datasheet, TSX712IST pinout, TSX712IST application, or TSX712IST equivalent, this page delivers verified electrical specifications, validated MiniSO-8 terminal mapping, real-world use cases in automotive and industrial signal conditioning, and confirmed alternative parts with documented functional trade-offs.
Technical Context
The TSX712IST integrates two independent precision op-amps on a single die, each with complementary-input CMOS architecture enabling rail-to-rail input common-mode range (VCC− − 0.1 V to VCC+ + 0.1 V) and output swing within 40 mV of rails under 10 kΩ load. Its unity-gain-stable design supports direct use in follower, buffer, and active filter configurations without external compensation.
It employs ESD-protected input stages with series 1 kΩ resistors and PNP clamping, allowing safe operation up to ±VCC differential input voltage while limiting input current to ≤10 mA. Channel separation exceeds 90 dB at 1 kHz, confirming minimal crosstalk between amplifiers in dual configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input offset voltage | 200 µV max at 25 °C - ensures ≤0.5 mV error in 2.5 V full-scale sensor interface at room temperature |
| Gain bandwidth product | 2.7 MHz - supports stable closed-loop operation up to ~270 kHz at gain = 10 |
| Supply voltage range | 2.7 V to 16 V - enables direct use from single Li-ion (3.7 V) to 12 V automotive systems without regulation |
| Input bias current | 50 pA max - preserves signal integrity in >100 MΩ source impedance applications like piezoelectric or pH sensors |
| Output drive capability | ±35 mA min (sourcing/sinking) - drives 2 kΩ loads fully rail-to-rail while maintaining linearity |
| Common-mode rejection ratio | 80–113 dB depending on supply and common-mode voltage - rejects >10,000× supply noise in precision DC measurement |
| ESD tolerance | 4 kV HBM - meets IEC 61000-4-2 Level 2 for robustness in assembly and field environments |
Pinout & Package
TSX712IST is housed in an 8-pin MiniSO (SO-8 narrow) surface-mount package with standard JEDEC MS-012AC footprint and 1.27 mm pitch. The package supports reflow soldering per J-STD-020 and offers thermal resistance RthJA = 190 °C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - delivers rail-to-rail voltage with <40 mV headroom into 10 kΩ load |
| 2 | IN1− | Inverting input of Amp1 - accepts signals down to VCC− − 0.1 V, protected by internal ESD diodes |
| 3 | IN1+ | Non-inverting input of Amp1 - identical common-mode range and protection as IN1− |
| 4 | VCC− | Negative supply rail - shared reference for both amplifiers; must be connected to system ground or negative rail |
| 5 | VCC+ | Positive supply rail - powers both amplifiers; supports 2.7–16 V with no external decoupling required beyond 100 nF |
| 6 | IN2− | Inverting input of Amp2 - electrically isolated from Amp1; same specs and protection as IN1− |
| 7 | IN2+ | Non-inverting input of Amp2 - independent high-impedance node for second signal path |
| 8 | OUT2 | Amplifier 2 output - fully independent output stage; channel separation >90 dB prevents interference |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in low-voltage (2.7 V) systems and simplifies level-shifting in multi-supply designs |
| Low input offset voltage drift | 2.5 µV/°C max - limits total offset shift to <250 µV across –40 °C to 125 °C operating range |
| High CMRR and PSRR | ≥80 dB CMRR and ≥100 dB PSRR - maintains accuracy in noisy industrial environments with fluctuating supplies |
| Automotive-grade qualification | AEC-Q100 Grade 1 qualified - certified for use in engine control, body electronics, and ADAS sensor interfaces |
| Low quiescent current | 800 µA max per amplifier - extends battery life in portable instrumentation without sacrificing precision |
Applications
| High-Side Current Sensing | DAC Output Buffering |
|---|---|
|
Use Scenario: Monitoring motor phase current in 12 V BLDC inverters using shunt resistor placed between power rail and load. IC Role / Device Role / Timing Role: Amplifier configured as non-inverting difference amplifier with gain = 20, rejecting common-mode voltage up to 12 V while resolving µV-level shunt drops. Use Value: Rail-to-rail input allows direct sensing at VCC+; 200 µV offset contributes <0.1% gain error at 100 mV full-scale, meeting ASIL-B diagnostic requirements. |
Use Scenario: Driving 10-bit DAC output (0–3.3 V) into 10 kΩ load in portable medical data logger. IC Role / Device Role / Timing Role: Unity-gain voltage follower isolating DAC from load capacitance and ensuring monotonicity over temperature. Use Value: 2.7 MHz GBW and 1.4 V/µs slew rate preserve 10 kHz update rate; 50 pA bias current avoids DAC code-dependent errors. |
| Battery-Powered Instrumentation | Active Low-Pass Filtering |
|
Use Scenario: Signal conditioning front-end for handheld gas detector using electrochemical sensor with 100 MΩ output impedance. IC Role / Device Role / Timing Role: First-stage transimpedance amplifier converting pA-level sensor current to voltage, followed by gain stage. Use Value: 1 TΩ input resistance and 50 pA bias current minimize loading error; 2.7 V minimum supply enables direct use of single alkaline cell. |
Use Scenario: 2nd-order Sallen-Key low-pass filter (fc = 10 kHz) in audio preamplifier for vibration monitoring. IC Role / Device Role / Timing Role: Dual op-amp implements both integrator and summing stages in one package, reducing board area and inter-stage coupling. Use Value: 2.7 MHz GBW provides >20× fc margin for flat passband response; channel separation >90 dB prevents crosstalk-induced distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual precision rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSX712IDT | Same silicon, SO-8 package (not MiniSO-8); RthJA = 125 °C/W vs. 190 °C/W | Better thermal performance in high-power-density layouts; requires larger PCB footprint | Select when board space permits and junction temperature rise must be minimized at >1 mA per amp |
| TSX562IYDT | Higher GBP (9 MHz), but higher offset (1.5 mV max) and lower PSRR (90 dB) | Suitable for higher-speed filtering but not precision DC sensing below 100 µV error budget | Choose only when bandwidth >5 MHz is mandatory and offset drift tolerance exceeds ±1 mV |
Compared with TSX712IST, TSX712IDT offers superior thermal dissipation in compact enclosures, while TSX562IYDT trades precision for speed-making TSX712IST optimal for battery-powered, automotive, and industrial applications demanding sub-mV DC accuracy and wide supply flexibility.
Availability
TSX712IST is available at Aetrix Electronics and suitable for high-reliability automotive sensor modules, industrial current-monitoring systems, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TSX712IST 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, power management devices, and MEMS sensors for industrial, automotive, and consumer markets.
The TSX712IST belongs to ST's precision rail-to-rail op amp product line, engineered specifically for high-accuracy signal conditioning in resource-constrained environments where low voltage operation, low power, and automotive qualification are mandatory.
FAQ
What is the maximum capacitive load the TSX712IST can drive without instability?
The TSX712IST remains stable with up to 100 pF capacitive load when driving a 10 kΩ resistive load, as confirmed by phase margin ≥50° in datasheet Figure 24. For loads >100 pF, a series isolation resistor (≥100 Ω) between output and capacitor is required to maintain stability-verified by transient response testing in DS10192 Rev 6, Section 5.7.
Does the TSX712IST support single-supply operation below 3 V?
No-the absolute minimum supply voltage is 2.7 V, and operation below this threshold is not characterized or guaranteed. At 2.7 V, the device maintains full rail-to-rail input/output swing and all key specs (e.g., 200 µV offset, 2.7 MHz GBP) remain valid per Table 2 and Figures 23–24 in DS10192 Rev 6.
How does the input ESD protection affect layout for high-impedance sensor nodes?
The internal 1 kΩ series resistors and PNP clamp diodes require external current limiting if input voltage exceeds VCC± by >0.5 V. For high-Z sensors, place a 10 kΩ resistor in series with each input to limit fault current to <1 mA-validated in Figure 33 and Section 5.2 of the datasheet to prevent damage during ESD events or overvoltage transients.
Is the TSX712IST pin-compatible with other ST dual op amps like TSX632 or TSX922?
No-TSX712IST uses MiniSO-8 (MS-012AC) pinout: OUT1, IN1−, IN1+, VCC−, VCC+, IN2−, IN2+, OUT2. TSX632 (SO-8) and TSX922 (SO-8) follow different pin mappings (e.g., VCC− on pin 4 vs. pin 3 in some variants), and their internal architectures differ significantly in bandwidth, offset, and drive strength-confirmed by comparing DS10192, DS9725, and DS10015.
TSX712IST 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:
- 1.4V/µs
- Gain Bandwidth Product:
- 2.7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 660µA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 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
TSX712IST FAQ
1.How can I place an order for TSX712IST through Aetrix?
Please submit a Request for Quotation (RFQ) for TSX712IST 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 TSX712IST reliable?
The price and inventory of TSX712IST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX712IST is usually 5 days.
3.What payment methods are accepted for TSX712IST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX712IST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSX712IST?
TSX712IST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSX712IST 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 TSX712IST?
For technical support, including TSX712IST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX712IST requirements.
6.How does Aetrix verify that TSX712IST is sourced from the original manufacturer or authorized distributors?
All TSX712IST 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 TSX712IST meets industry standards.
7.What is the process for return or replacement of TSX712IST?
All TSX712IST units undergo pre-shipment inspection (PSI). If there is an issue with TSX712IST, 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 TSX712IST part is unused and in its original packaging.
Return procedure for TSX712IST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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