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STMicroelectronics TSB712IST
- Part No.:
- TSB712IST
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TSB712IST.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MINISO
- Quantity:
- Payment:
- Shipping:
Inventory:3,606
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Product details
Overview
TSB712IST from STMicroelectronics is a dual-channel, rail-to-rail input/output precision operational amplifier optimized for high-side and low-side current sensing in industrial motor control and data acquisition systems. It delivers 6 MHz gain bandwidth, 3 V/µs slew rate, 300 µV max input offset voltage at 25 °C, and operates from 2.7 V to 36 V single supply (±1.35 V to ±18 V dual). Its integrated EMI filter and 2 kV HBM ESD tolerance support robust operation in noisy factory environments.
For engineers reviewing the TSB712IST datasheet, TSB712IST pinout, TSB712IST application, or TSB712IST equivalent, this device is selected for precision analog signal conditioning where wide supply range, low noise (12 nV/√Hz), extended temperature operation (–40 °C to +125 °C), and rail-to-rail swing are critical - especially in Hall effect sensor interfaces and strain gauge amplification.
Technical Context
The TSB712IST uses a complementary bipolar input stage enabling true rail-to-rail input common-mode range from VCC– to (VCC+)+0.1 V and output swing within 120 mV of each rail at 2 mA load. Its dual-channel architecture supports independent signal paths with 125 dB crosstalk rejection at 1 kHz, minimizing inter-channel interference in multi-sensor systems.
It features internal ESD diodes on all inputs tied to both supply rails, requiring external series resistors if input voltages exceed rails by >0.2 V - a design constraint critical for overvoltage-protected current sense configurations. The amplifier maintains stable phase margin (>45° at unity gain) up to 100 pF capacitive load without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 6 MHz - enables stable closed-loop gain ≥10 at 600 kHz for anti-aliasing filter integration. |
| Slew Rate | 3 V/µs - supports 10 Vpp signals up to ~480 kHz without distortion in unity-gain buffer applications. |
| Input Offset Voltage | ±300 µV max at 25 °C - ensures ≤0.003% error in 10 V full-scale current sense outputs with 100 mΩ shunt. |
| Supply Voltage Range | 2.7 V to 36 V single supply - eliminates need for level-shifting in 24 V industrial PLC I/O modules. |
| Input Voltage Noise | 12 nV/√Hz at 10 kHz - preserves SNR >90 dB in 100 Hz–10 kHz instrumentation amplifier front-ends. |
| EMI Rejection | Integrated RC filter on inputs - reduces RF rectification-induced offset shift below 1 µV for 900 MHz GSM bursts. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive motor drivers and industrial furnace controllers. |
Pinout & Package
TSB712IST is housed in MiniSO-8 (SO8-compatible) package with exposed pad for thermal enhancement. Pin mapping follows JEDEC MS-012AC standard and supports surface-mount reflow assembly per IPC/JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplified output of Channel 1 - drives feedback network or ADC input with rail-to-rail swing. |
| 2 | IN1– | Inverting input of Channel 1 - connects to shunt resistor low-side node in current sensing topologies. |
| 3 | IN1+ | Non-inverting input of Channel 1 - referenced to system ground or bias voltage for differential measurement. |
| 4 | VCC– | Negative supply terminal - must be connected to system ground or negative rail; serves as return path for both channels. |
| 5 | IN2+ | Non-inverting input of Channel 2 - used for reference channel or second sensor interface in dual transducer systems. |
| 6 | IN2– | Inverting input of Channel 2 - accepts inverted signal path for matched-pair configurations or differential output stages. |
| 7 | OUT2 | Amplified output of Channel 2 - provides independent signal path for redundancy or multi-axis sensing. |
| 8 | VCC+ | Positive supply terminal - accepts up to +36 V; powers both op-amp cores and internal ESD protection circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interfacing with 0–3.3 V ADCs and 0–24 V sensor outputs without external level-shifting components. |
| Low input offset drift | 2.8 µV/°C max - limits temperature-induced gain error to <0.35 mV over 125 °C ambient swing in uncalibrated systems. |
| Integrated EMI filter | On-chip RC network suppresses RF-induced offset shifts from 100 MHz–2.5 GHz, eliminating discrete R-C filters in EMC-critical designs. |
| High CMRR | 115 dB min at 25 °C (VCC– to VCC+–1.5 V range) - rejects common-mode noise in 4–20 mA loop receivers and bridge sensor interfaces. |
| 2 kV HBM ESD tolerance | Withstands electrostatic discharge events during PCB handling and field maintenance without latch-up or parameter shift. |
Applications
| High-Side Current Sensing | Hall Effect Sensor Interface |
|---|---|
|
Use Scenario: Monitoring battery pack charge/discharge current in EV BMS using shunt resistor placed between battery positive and load. IC Role / Device Role / Timing Role: Precision difference amplifier configured in high-side configuration with matched resistor network to reject common-mode voltage up to 400 V. Use Value: Maintains ±0.5% current measurement accuracy across –40 °C to +125 °C while rejecting 36 V common-mode offset with 115 dB CMRR. |
Use Scenario: Conditioning analog output of linear Hall effect sensor in servo motor position feedback loop. IC Role / Device Role / Timing Role: Low-noise non-inverting amplifier with gain = 10 to boost 20 mV/mT sensor output to 0–3.3 V for MCU ADC sampling. Use Value: 12 nV/√Hz input noise ensures <1 LSB error in 12-bit ADC conversion at 10 kHz bandwidth; rail-to-rail output avoids clipping near supply rails. |
| Data Acquisition Front-End | Industrial Strain Gauge Amplifier |
|
Use Scenario: Signal conditioning for 4-wire RTD and thermocouple inputs in modular PLC analog input modules. IC Role / Device Role / Timing Role: Dual-channel instrumentation-grade amplifier providing programmable gain and offset correction for multiple sensor types. Use Value: Dual-channel layout allows simultaneous processing of two sensor inputs with <1 µV channel-to-channel crosstalk, reducing board space vs. discrete solutions. |
Use Scenario: Wheatstone bridge excitation and output amplification in load cell interfaces for weigh scales and process control valves. IC Role / Device Role / Timing Role: Precision differential amplifier with 1000 V/V gain, driven by stable 5 V bridge excitation source. Use Value: 300 µV max Vos contributes <0.03% FSR error at 10 mV full-scale bridge output; 6 MHz GBW supports fast step response in dynamic weighing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSB712AIST | Enhanced grade: ±300 µV max Vos at 25 °C (vs. ±800 µV for TSB712IST); tighter ΔVos/ΔT (2.8 µV/°C vs. 4 µV/°C). | Required for metrology-grade instruments and medical diagnostics where long-term zero stability is mandatory. | Select TSB712AIST when offset drift budget is <0.5 mV over full temperature range and calibration intervals exceed 12 months. |
| TSB512IST | Same 36 V rating and rail-to-rail I/O but lower GBP (6 MHz → 2.5 MHz); higher input bias current (max 900 nA vs. 300 nA). | Suitable for DC-coupled sensor interfaces with bandwidth <100 kHz, e.g., pressure transducers and thermistors. | Choose TSB512IST only when power consumption is prioritized (1.4 mA vs. 1.8 mA) and bandwidth demand is ≤200 kHz. |
Compared with TSB712IST, the TSB712AIST improves offset stability for high-accuracy systems, while the TSB512IST trades bandwidth and noise performance for lower quiescent current - making it viable only in cost-sensitive, low-bandwidth industrial sensors.
Availability
TSB712IST is available at Aetrix Electronics and suitable for industrial motor control, test and measurement equipment, and high-reliability current sensing applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TSB712IST 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
The TSB712IST belongs to ST's high-voltage precision op amp product line, engineered specifically for rugged industrial signal conditioning where wide supply range, rail-to-rail operation, and EMI resilience are non-negotiable.
FAQ
What is the maximum capacitive load the TSB712IST can drive without instability?
The TSB712IST maintains ≥45° phase margin with up to 100 pF capacitive load at unity gain and 36 V supply, as verified in Figure 26 of DS12487. Driving >100 pF requires isolation resistor (≥10 Ω) between output and load to preserve stability - confirmed by overshoot measurements in Figure 27.
Can the TSB712IST operate with a single 3.3 V supply?
Yes - the TSB712IST functions down to 2.7 V supply, supporting 3.3 V single-rail operation. At 3.3 V, output swing reaches within 120 mV of each rail at 2 mA load (per Table 5), and input common-mode range extends from ground to 3.4 V, enabling direct interfacing with 3.3 V logic and ADCs.
How does the integrated EMI filter affect high-frequency performance?
The on-die RC filter attenuates RF signals above 100 MHz before they reach the input transistors, preventing rectification-induced offset shifts. It introduces no measurable degradation in small-signal bandwidth (<0.1% GBP reduction) or slew rate, as validated by THD+N and step response data in Figures 37–31.
Is the TSB712IST pin-compatible with other ST dual op amps in MiniSO-8?
No - the TSB712IST uses a unique pinout (OUT1, IN1–, IN1+, VCC–, IN2+, IN2–, OUT2, VCC+) that differs from TSB512IST (which places VCC+ at Pin 1 and GND at Pin 4). Direct replacement requires PCB layout revision; refer to Table 2 in DS12487 for exact mapping.
TSB712IST 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:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 3V/µs
- Gain Bandwidth Product:
- 6 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 300 nA
- Voltage - Input Offset:
- 1.2 mV
- Current - Supply:
- 1.8mA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MiniSO
TSB712IST FAQ
1.How can I place an order for TSB712IST through Aetrix?
Please submit a Request for Quotation (RFQ) for TSB712IST 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 TSB712IST reliable?
The price and inventory of TSB712IST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSB712IST is usually 5 days.
3.What payment methods are accepted for TSB712IST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSB712IST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSB712IST?
TSB712IST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSB712IST 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 TSB712IST?
For technical support, including TSB712IST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSB712IST requirements.
6.How does Aetrix verify that TSB712IST is sourced from the original manufacturer or authorized distributors?
All TSB712IST 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 TSB712IST meets industry standards.
7.What is the process for return or replacement of TSB712IST?
All TSB712IST units undergo pre-shipment inspection (PSI). If there is an issue with TSB712IST, 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 TSB712IST part is unused and in its original packaging.
Return procedure for TSB712IST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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