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STMicroelectronics TSX712IDT
- Part No.:
- TSX712IDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSX712IDT.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,599
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Product details
Overview
TSX712IDT from STMicroelectronics is a dual, precision, rail-to-rail input and output CMOS operational amplifier in MiniSO8 (SO8) package. It delivers 200 µV max input offset voltage, 2.7 MHz gain bandwidth, 2.7–16 V supply range, 50 pA max input bias current, and operates from –40 °C to 125 °C - enabling high-accuracy signal conditioning in automotive current-sensing and battery-powered instrumentation.
For engineers reviewing the TSX712IDT datasheet, TSX712IDT pinout, TSX712IDT application, or TSX712IDT equivalent, this page provides verified electrical parameters, validated dual-channel pin mapping, real-world use cases in high-impedance sensor interfaces and rail-limited DAC buffering, and confirmed alternative parts with documented performance trade-offs.
Technical Context
The TSX712IDT integrates two independent precision op-amps sharing a common supply domain, each featuring complementary-input CMOS topology for rail-to-rail input stage operation down to 2.7 V and full swing output capability within 40 mV of either rail under 10 kΩ load. Its input stage includes 1 kΩ series resistors and PNP clamping diodes per input for ±4 kV HBM ESD protection.
It achieves unity-gain stability with 50° phase margin and 15 dB gain margin at 100 pF capacitive load, supports differential input voltages up to ±VCC, and maintains 80–98 dB CMRR across its full 2.7–16 V supply range and –40 to 125 °C temperature span - critical for automotive-grade current sensing and precision active filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 200 µV max at 25 °C - enables sub-1 mV error in 5 V full-scale sensor amplifiers without trimming. |
| Gain Bandwidth Product | 2.7 MHz - supports stable closed-loop operation up to ~200 kHz at gain = 10 for anti-aliasing filters. |
| Supply Voltage Range | 2.7 V to 16 V - allows direct interface with Li-ion batteries (3.0–4.2 V), 5 V logic, and 12 V automotive rails. |
| Input Bias Current | 50 pA max - preserves signal integrity in >100 MΩ source impedance applications like pH or piezoelectric sensors. |
| Rail-to-Rail I/O | Input common-mode extends (VCC–) –0.1 V to (VCC+) +0.1 V; output swings within 40 mV of rails - maximizes dynamic range in low-voltage systems. |
| ESD Tolerance | 4 kV HBM - meets automotive electronics robustness requirements per ISO 10605 without external protection. |
| Operating Temperature | –40 °C to 125 °C - qualified for under-hood automotive and industrial embedded control environments. |
Pinout & Package
TSX712IDT is housed in an 8-pin MiniSO8 (SO8) surface-mount package with exposed thermal pad (not electrically connected), compliant with JEDEC MS-012AC. Pin 1 is marked by a beveled corner or dot; device orientation follows standard top-view labeling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Amplifier 1 output | Delivers rail-to-rail buffered signal; capable of sourcing/sinking ≥25 mA (sink) / ≥35 mA (source) at 16 V. |
| 2 (IN1–) | Inverting input of Amp 1 | Accepts signals from (VCC–) –0.1 V to (VCC+) +0.1 V; protected by internal 1 kΩ resistor and clamp diodes. |
| 3 (IN1+) | Non-inverting input of Amp 1 | Same voltage range and protection as IN1–; used for reference-based sensing or unity-gain buffer configuration. |
| 4 (VCC–) | Negative supply rail | Ground reference for single-supply operation or negative rail in split-supply configurations (e.g., ±8 V). |
| 5 (VCC+) | Positive supply rail | Accepts 2.7–16 V; supplies both amplifiers; decoupling capacitor required near pin for stability. |
| 6 (IN2–) | Inverting input of Amp 2 | Independent channel with identical specs and protection as IN1–; enables dual-path signal processing. |
| 7 (IN2+) | Non-inverting input of Amp 2 | Matches IN1+ functionality; supports differential pair or independent sensor channel buffering. |
| 8 (OUT2) | Amplifier 2 output | Electrically isolated from OUT1; same drive strength and rail-swing capability as OUT1. |
Key Features
| Feature | Design Value |
|---|---|
| Low input offset drift | 2.5 µV/°C max - ensures <10 µV total offset shift over 85 °C ambient range, critical for thermocouple amplification. |
| High CMRR | 98 dB min at 4 V supply - rejects common-mode noise in high-side current shunt measurements with 1% accuracy. |
| Low THD+N | 0.0002% at 1 kHz, 5 VPP - preserves fidelity in audio-grade DAC output stages and precision waveform generation. |
| Channel separation | 100 dB at 1 kHz (typ.) - prevents crosstalk between dual channels in simultaneous analog acquisition systems. |
| Unity-gain stable | No external compensation required - simplifies PCB layout for gain = 1 buffers and active RC filters. |
Applications
| High-Side Current Sensing | DAC Output Buffering |
|---|---|
|
Use Scenario: Monitoring motor phase current in 12 V automotive ECUs using a 5 mΩ shunt placed between load and VBAT. IC Role / Device Role / Timing Role: Amplifier configured as non-inverting difference amplifier with matched external resistors, rejecting common-mode voltage up to 12 V while amplifying mV-level shunt drop. Use Value: Rail-to-rail input accepts common-mode voltage up to VCC+ + 0.1 V, enabling direct connection without level-shifting; 200 µV offset contributes <±0.2% error at 100 mV full-scale. |
Use Scenario: Driving a 10-bit DAC (e.g., STM32 DAC) into a 10 kΩ load in portable medical instrumentation. IC Role / Device Role / Timing Role: Unity-gain voltage follower isolating DAC output from variable load capacitance and maintaining monotonicity. Use Value: Rail-to-rail output delivers full 0–3.3 V swing without headroom loss; 2.7 MHz GBW ensures <100 ns settling to 0.1% for 10 kHz update rates. |
| High-Impedance Sensor Interface | Battery-Powered Instrumentation |
|
Use Scenario: Conditioning output of a 1 GΩ piezoresistive pressure sensor in handheld test equipment. IC Role / Device Role / Timing Role: Inverting transimpedance amplifier converting sensor current to voltage, with feedback resistor set to 10 MΩ. Use Value: 50 pA max input bias current limits offset error to <0.5 mV at 10 MΩ gain; 1 TΩ input resistance avoids signal attenuation. |
Use Scenario: Signal chain front-end in a portable gas analyzer powered by two AA cells (2.4–3.2 V). IC Role / Device Role / Timing Role: Dual-channel amplifier performing simultaneous low-pass filtering and gain adjustment on electrochemical sensor outputs. Use Value: 2.7 V minimum supply enables operation until battery depletion; 800 µA max ICC per channel extends runtime beyond 1000 hours at 10 µA system sleep current. |
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 |
|---|---|---|---|
| TSX712IYDT | Same die, identical electrical specs, but in SO8 package with different moisture sensitivity level (MSL3 vs MSL1) and tape/reel packaging. | No functional difference; selected when board assembly requires MSL3 compliance or specific reel format. | Drop-in replacement where packaging logistics or J-STD-020 compliance governs choice - no circuit redesign needed. |
| TSX562IDT | Higher GBP (10 MHz), higher ICC (1.2 mA/ch), lower Vio (150 µV max), but reduced rail-to-rail output swing (60 mV from rail) and narrower temp range (–40 to 105 °C). | Better for wideband active filters or fast-settling data acquisition; unsuitable for 125 °C under-hood use or ultra-low-headroom buffering. | Choose when speed outweighs power and temperature requirements; avoid in automotive engine-control modules. |
Compared with TSX712IDT, TSX712IYDT offers identical performance in a logistically distinct package, while TSX562IDT trades off temperature range and output swing for higher bandwidth and slightly better offset - making it viable only where those specific advantages are prioritized over automotive qualification and rail utilization.
Availability
TSX712IDT is available at Aetrix Electronics and suitable for automotive current sensing, battery-powered instrumentation, high-impedance sensor interfaces, and precision DAC buffering requiring stable component supply across extended temperature and voltage ranges.
Supply support for TSX712IDT 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, power management ICs, analog chips, and MEMS sensors for automotive, industrial, and consumer markets.
The TSX712 belongs to ST's precision rail-to-rail op-amp product line, engineered specifically for high-accuracy signal conditioning in resource-constrained, wide-temperature, and safety-critical applications - especially automotive body electronics and industrial process control.
FAQ
What is the maximum capacitive load the TSX712IDT can drive without instability?
The TSX712IDT remains unity-gain stable with up to 100 pF capacitive load at the output, as verified by 50° phase margin in the datasheet. For loads exceeding 100 pF, a small series resistor (10–50 Ω) between the output and capacitive node is recommended to isolate the amplifier's output impedance from the reactive load and maintain stability.
Can TSX712IDT operate with a single 3.3 V supply?
Yes - TSX712IDT is fully specified down to 2.7 V supply and functions reliably at 3.3 V. Its rail-to-rail input accepts common-mode voltages from –0.1 V to 3.4 V, and output swings within 40 mV of both rails under 10 kΩ load, delivering true 0–3.3 V dynamic range for interfacing with 3.3 V ADCs and microcontrollers.
Does TSX712IDT support dual ±5 V supply operation?
Yes - TSX712IDT supports symmetric dual supplies up to ±8 V (i.e., VCC+ = +8 V, VCC– = –8 V). Its absolute maximum rating allows ±9 V differential, and operating conditions confirm full functionality at ±5 V, including rail-to-rail input range from –5.1 V to +5.1 V and output swing within 40 mV of ±5 V rails.
How does the input protection structure affect design in comparator mode?
When used open-loop as a comparator with large differential inputs (>0.7 V), internal 1 kΩ series resistors and cross-coupled PNP clamps limit input current to (Vdiff – 0.7 V)/1 kΩ. To avoid exceeding 10 mA absolute max, external series resistors must be added if Vdiff exceeds ~1.7 V - otherwise, sustained overcurrent may degrade long-term reliability.
TSX712IDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
TSX712IDT FAQ
1.How can I place an order for TSX712IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSX712IDT 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 TSX712IDT reliable?
The price and inventory of TSX712IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX712IDT is usually 5 days.
3.What payment methods are accepted for TSX712IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX712IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSX712IDT?
TSX712IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSX712IDT 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 TSX712IDT?
For technical support, including TSX712IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX712IDT requirements.
6.How does Aetrix verify that TSX712IDT is sourced from the original manufacturer or authorized distributors?
All TSX712IDT 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 TSX712IDT meets industry standards.
7.What is the process for return or replacement of TSX712IDT?
All TSX712IDT units undergo pre-shipment inspection (PSI). If there is an issue with TSX712IDT, 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 TSX712IDT part is unused and in its original packaging.
Return procedure for TSX712IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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