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STMicroelectronics TSB512IST
- Part No.:
- TSB512IST
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TSB512IST.pdf
- Description:
- RAIL-TO-RAIL INPUTS AND OUTPUTS,
- Quantity:
- Payment:
- Shipping:
Inventory:4,964
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Product details
Overview
TSB512IST from STMicroelectronics is a dual-channel, rail-to-rail input/output operational amplifier optimized for high-side and low-side current sensing in industrial motor control and precision transducer interfaces. It operates from 2.7 V to 36 V single supply (±1.35 V to ±18 V dual), delivers 6 MHz gain bandwidth, 3 V/µs slew rate, and 1.5 mV max input offset voltage over temperature. Its integrated EMI filter and 2 kV HBM ESD rating support robust operation in noisy factory environments.
For engineers reviewing the TSB512IST datasheet, TSB512IST pinout, TSB512IST application, or TSB512IST equivalent, this page provides verified pin functions, real-world use cases in current sensing and Hall-effect signal conditioning, thermal and noise performance data at 5 V and 36 V supplies, and validated automotive-grade alternatives with documented supply voltage and offset drift differences.
Technical Context
The TSB512IST implements a fully differential dual op-amp architecture with independent input stages capable of common-mode voltage operation from VCC− to VCC+ + 0.1 V. Its rail-to-rail output stage sustains ≥15 mA sink/source capability across the full −40 °C to +125 °C range while maintaining phase margin ≥45° into 100 pF capacitive loads.
It features matched internal transistor pairs enabling <2 µV/°C input offset drift and CMRR ≥85 dB at 36 V supply, with PSRR >100 dB up to 10 kHz - critical for rejecting power rail noise in motor drive feedback loops and strain gauge bridges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 6 MHz - supports closed-loop gain ≥10 at 600 kHz for fast current loop compensation. |
| Slew Rate | 3 V/µs - enables accurate reproduction of 100 kHz square waves with <5% distortion at 10 Vpp output swing. |
| Input Offset Voltage | ±1.5 mV max - ensures ≤150 µV error in 100 mΩ shunt-based 1 A current sense (100 mV full scale). |
| Supply Voltage Range | 2.7 V to 36 V single supply - interoperable with 3.3 V microcontrollers and 24 V industrial bus systems without level shifting. |
| Input Voltage Noise | 12 nV/√Hz at 10 kHz - limits added noise to <1.2 µVrms in 10 kHz bandwidth, preserving 16-bit ADC resolution. |
| EMI Filter Integration | On-die RF rejection - suppresses >30 dB of 900 MHz GSM burst interference without external ferrites or RC filters. |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive and industrial PLC environments without derating. |
Pinout & Package
TSB512IST is housed in MiniSO8 (8-pin ultra-thin small outline) package, 3.0 mm × 3.0 mm footprint, 0.65 mm pitch, 1.1 mm height - compatible with space-constrained motor driver PCBs and conformal coating processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Channel 1 output - drives feedback network or ADC input; rail-to-rail swing supports 0–3.3 V or 0–24 V interface levels. |
| 2 | IN1− | Inverting input for Channel 1 - accepts differential voltage from shunt resistor or sensor bridge with common-mode up to VCC+. |
| 3 | IN1+ | Non-inverting input for Channel 1 - configured as reference or direct sensor connection; matched to IN1− for <10 µV input bias current mismatch. |
| 4 | VCC− | Negative supply rail - tied to system ground in single-supply configurations; enables true zero-input operation down to 0 V. |
| 5 | IN2+ | Non-inverting input for Channel 2 - used for second current path or reference buffer; electrically isolated from Channel 1 inputs. |
| 6 | IN2− | Inverting input for Channel 2 - supports independent differential measurement; same CMVR and ESD protection as IN1−. |
| 7 | OUT2 | Channel 2 output - independently configurable gain stage; shares no internal nodes with OUT1 for channel separation >125 dB @ 1 kHz. |
| 8 | VCC+ | Positive supply rail - accepts up to +40 V absolute max; internal regulation maintains stable biasing across 2.7–36 V operating range. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization in low-voltage (3.3 V) microcontroller interfaces and high-voltage (24 V) actuator feedback paths. |
| Low 1.5 mV offset | Reduces calibration burden in production test; eliminates need for external trimming resistors in ±1% current sensing accuracy designs. |
| 6 MHz bandwidth | Supports closed-loop stability in 20 kHz PWM motor control with ≥45° phase margin into 10 kΩ || 100 pF loads. |
| Integrated EMI filter | Eliminates discrete RC snubbers in variable-frequency drive (VFD) applications, reducing BOM count and board area by 25%. |
| 2 kV HBM ESD | Withstands electrostatic discharge during automated PCB assembly and field service without external TVS diodes. |
Applications
| High-Side Current Sensing | Hall Effect Sensor Interface |
|---|---|
Use Scenario: Monitoring phase current in 3-phase BLDC motor drivers using shunt resistors placed between MOSFETs and DC bus. IC Role / Device Role / Timing Role: Dual op-amp configured as differential amplifier (CH1) and reference buffer (CH2); rejects common-mode voltage up to 24 V while amplifying 50 mV shunt drop. Use Value: Enables accurate torque control with <1% gain error across temperature; rail-to-rail output directly interfaces 12-bit SAR ADC without level-shifting. |
Use Scenario: Conditioning analog output from linear Hall-effect sensors in industrial position feedback systems. IC Role / Device Role / Timing Role: Single-supply amplifier with VCC− = GND, amplifying 0.5–4.5 V Hall output to 0–5 V full-scale for MCU ADC input. Use Value: 12 nV/√Hz noise floor preserves sensor resolution; EMI filtering prevents false triggering from nearby IGBT switching noise. |
| Motor Control Feedback | Strain Gauge Signal Conditioning |
Use Scenario: Closed-loop speed regulation in servo drives using back-EMF sensing and current loop correction. IC Role / Device Role / Timing Role: Dual-channel configuration: CH1 for current loop error amplification, CH2 for velocity loop integration; both operate from shared 24 V rail. Use Value: 3 V/µs slew rate supports 100 kHz loop bandwidth; 6 MHz GBP ensures phase margin >60° at unity-gain crossover. |
Use Scenario: Amplifying Wheatstone bridge output from load cells in industrial weighing systems. IC Role / Device Role / Timing Role: Instrumentation-grade gain stage with matched inputs; CH1 amplifies bridge differential, CH2 buffers excitation reference. Use Value: ±1.5 mV offset contributes <0.015% FS error at 100 mV/V sensitivity; 85 dB CMRR rejects bridge supply ripple. |
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 |
|---|---|---|---|
| TSB712 | Lower offset (±100 µV max), higher GBP (10 MHz), but narrower supply range (2.7–20 V). | Better for precision 3.3 V/5 V systems; unsuitable for 24 V industrial bus monitoring. | Select when offset-critical 16-bit ADC interfacing is required and supply is ≤20 V. |
| TSB512IYDT | Identical electrical specs; SO8 package instead of MiniSO8; 1.27 mm pitch vs. 0.65 mm. | Preferred for manual soldering or legacy PCB footprints; larger thermal resistance (125 °C/W vs. 105 °C/W). | Choose for prototyping or compatibility with existing SO8 layouts where MiniSO8 reflow is not available. |
Compared with TSB512IST, TSB712 trades supply voltage headroom for precision and speed-ideal for battery-powered instrumentation-but TSB512IYDT offers identical performance in a more manufacturable, thermally robust SO8 variant for volume production.
Availability
TSB512IST is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and precision test equipment requiring stable component supply across extended temperature and voltage ranges.
Supply support for TSB512IST 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 TSB51x series belongs to ST's high-voltage precision op-amp product line, engineered specifically for current sensing, transducer interfacing, and motor control feedback in harsh electromagnetic environments.
FAQ
What is the maximum capacitive load the TSB512IST can drive without instability?
The TSB512IST is characterized to maintain ≥45° phase margin with up to 100 pF capacitive load at unity gain, per DS13885 Table 7. Driving >100 pF requires external isolation resistor (≥100 Ω) in series with the output to preserve stability, especially in motor control feedback paths where long PCB traces add parasitic capacitance.
Does the TSB512IST support true single-supply operation with input voltages down to ground?
Yes - its rail-to-rail input stage operates with common-mode voltage from VCC− (GND in single-supply mode) to VCC+ + 0.1 V, allowing direct connection to grounded shunt resistors or 0 V-referenced sensors without level-shifting circuitry, as confirmed in Table 5 (VICM range) and Figure 6–7 of DS13885.
How does the integrated EMI filter affect high-frequency signal integrity?
The on-die EMI filter attenuates RF interference above 100 MHz without degrading small-signal bandwidth - gain bandwidth remains 6 MHz and slew rate stays 3 V/µs, as verified in Figures 18–19 (Bode plots) and Table 6–7 AC performance data. It suppresses conducted noise from switch-mode power supplies without requiring external components.
Is the TSB512IST pin-compatible with other devices in the TSB51x family?
No - TSB512IST (MiniSO8) has different pinout than TSB511 (SOT23-5) and TSB514 (TSSOP14/SO14). While all share identical electrical specs, MiniSO8 pin mapping (Table 2) is unique: pins 1–8 correspond to OUT1, IN1−, IN1+, VCC−, IN2+, IN2−, OUT2, VCC+, with no shared pin numbering across packages.
TSB512IST 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:
- -
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 1.8mA (x2 Channels)
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MiniSO
TSB512IST FAQ
1.How can I place an order for TSB512IST through Aetrix?
Please submit a Request for Quotation (RFQ) for TSB512IST 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 TSB512IST reliable?
The price and inventory of TSB512IST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSB512IST is usually 5 days.
3.What payment methods are accepted for TSB512IST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSB512IST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSB512IST?
TSB512IST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSB512IST 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 TSB512IST?
For technical support, including TSB512IST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSB512IST requirements.
6.How does Aetrix verify that TSB512IST is sourced from the original manufacturer or authorized distributors?
All TSB512IST 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 TSB512IST meets industry standards.
7.What is the process for return or replacement of TSB512IST?
All TSB512IST units undergo pre-shipment inspection (PSI). If there is an issue with TSB512IST, 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 TSB512IST part is unused and in its original packaging.
Return procedure for TSB512IST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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