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STMicroelectronics TSB612IYST
- Part No.:
- TSB612IYST
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TSB612IYST.pdf
- Description:
- LOW POWER, RAIL-TO-RAIL OUTPUT,
- Quantity:
- Payment:
- Shipping:
Inventory:5,636
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Product details
Overview
TSB612IYST from STMicroelectronics is a dual, rail-to-rail output, low-power operational amplifier designed for precision signal conditioning in high-voltage industrial and automotive systems. It delivers 1 mV max input offset voltage, 560 kHz gain bandwidth product at 36 V, 125 μA max supply current per channel, and operates across –40 °C to 125 °C - enabling use in battery monitoring circuits within 24 V/36 V vehicle power domains.
For engineers reviewing the TSB612IYST datasheet, TSB612IYST pinout, TSB612IYST application, or TSB612IYST equivalent, key selection considerations include its rail-to-rail output swing (≤110 mV from rails at 36 V), extended common-mode input range (to ground), 4 kV HBM ESD rating, and guaranteed performance at 2.7–36 V supply - critical for robust sensor interface and power supply feedback loop design.
Technical Context
The TSB612IYST integrates two independent high-voltage CMOS op-amp channels with input stages supporting common-mode voltages down to VCC− and output stages capable of swinging within 110 mV of either rail under 10 kΩ load. Its 560 kHz GBP and 0.20 V/μs max slew rate support stable closed-loop operation in DC-coupled gain stages and low-frequency active filters.
It features internal ESD protection diodes on all pins (4 kV HBM), input bias currents ≤15 nA over temperature, and supply voltage rejection ratio ≥100 dB up to 36 V - making it suitable for noisy 12 V/24 V/36 V automotive subsystems where supply ripple immunity and input accuracy are essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 36 V - supports direct connection to 12 V, 24 V, and 36 V automotive and industrial rails without regulation. |
| Input Offset Voltage | 1 mV max - enables accurate amplification of mV-level sensor signals (e.g., shunt-based current sensing) without trimming. |
| Gain Bandwidth Product | 560 kHz typ at 36 V - sufficient for closed-loop control loops in power supply feedback and motor current sensing up to ~50 kHz. |
| Rail-to-Rail Output | Swings to within 110 mV of VCC− and 150 mV of VCC+ at 36 V - maximizes dynamic range in single-supply configurations. |
| Supply Current per Channel | 125 μA max at 36 V - allows dual-channel precision amplification in always-on automotive modules with <250 μA total quiescent draw. |
| Operating Temperature | –40 °C to 125 °C - qualified for engine bay, battery management, and under-hood applications per AEC-Q100 stress requirements. |
| ESD Rating | 4 kV HBM - provides robustness against handling and board-level electrostatic events in production and field environments. |
Pinout & Package
TSB612IYST is housed in an SO8 (Small Outline 8-pin) package, measuring 4.9 mm × 3.9 mm × 1.75 mm, with standard 1.27 mm pitch and gull-wing leads. This RoHS-compliant ECOPACK2 package supports automated surface-mount assembly and offers thermal resistance (RthJA) of 125 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Channel 1 output | Delivers rail-to-rail buffered signal; requires no external pull-up/down for single-supply operation. |
| 2 (VCC−) | Negative supply rail | Ground reference for dual-supply use or system GND in single-supply configurations (supports input to ground). |
| 3 (IN+1) | Channel 1 non-inverting input | High-impedance node (Iib ≤15 nA); accepts common-mode voltages from VCC− to VCC+ −1 V. |
| 4 (VCC+) | Positive supply rail | Accepts up to 36 V DC; bypass capacitor (22 nF) recommended adjacent to pin for startup stability and PSRR enhancement. |
| 5 (IN−1) | Channel 1 inverting input | Differential input node; ESD diodes clamp to VCC+/VCC− - external series resistor required if input exceeds rails. |
| 6 (IN−2) | Channel 2 inverting input | Independent second channel input; identical electrical specs and ESD structure as IN−1. |
| 7 (IN+2) | Channel 2 non-inverting input | Supports same common-mode range and bias current as IN+1; enables dual-sensor or differential pair buffering. |
| 8 (OUT2) | Channel 2 output | Second rail-to-rail output; electrically isolated from OUT1 - allows independent gain stages or redundancy paths. |
Key Features
| Feature | Design Value |
|---|---|
| Low input offset drift | ≤6 μV/°C max - ensures stable DC accuracy across automotive temperature cycles without recalibration. |
| Unity-gain stable | No external compensation required - simplifies PCB layout for gain = 1 buffer or follower configurations. |
| Extended common-mode range | Includes VCC− (ground) - enables direct interfacing with grounded sensors (e.g., thermistors, RTDs, shunts) in single-supply systems. |
| High CMRR | ≥105 dB at 36 V - rejects noise coupled onto sensor lines in high-EMI environments like motor drives and alternators. |
| Low THD+N | 0.004 % at 1 kHz - preserves signal fidelity in analog front-ends for diagnostic ADC sampling and audio-grade monitoring. |
Applications
| Battery Management System (BMS) | Automotive HVAC Blower Control |
|---|---|
Use Scenario: Monitoring cell voltage and pack current in 12 V–48 V EV/HEV battery stacks using precision shunt amplifiers and voltage dividers. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: one channel buffers shunt voltage (IN−/IN+), second channel scales battery pack voltage (resistor divider output). Use Value: 1 mV offset and rail-to-rail output preserve measurement resolution across full 0–36 V range; 125 μA/channel enables low-power wake-up monitoring. |
Use Scenario: Closed-loop speed control of 24 V DC blower motors via PWM-driven H-bridge, requiring feedback of motor current and back-EMF. IC Role / Device Role / Timing Role: Current sense amplifier (gain = 20–100) and back-EMF buffer driving microcontroller ADC inputs. Use Value: 560 kHz GBP supports fast transient response to PWM edges; 125 °C rating ensures reliability near hot HVAC ducts and motors. |
| Industrial 24 V PLC Analog Input Module | Automotive Body Control Module (BCM) |
Use Scenario: Conditioning 4–20 mA loop signals and thermocouple outputs in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Precision I/V converter and cold-junction compensation amplifier feeding SAR ADCs. Use Value: Input common-mode to ground eliminates need for level-shifting circuitry; 4 kV HBM withstands field wiring ESD events. |
Use Scenario: Monitoring door lock actuator current, mirror position potentiometer voltage, and ambient light sensor output in centralized body electronics. IC Role / Device Role / Timing Role: Multi-function analog front-end: one channel for current sensing, another for resistive sensor scaling. Use Value: Dual-channel integration reduces component count; –40 °C to 125 °C operation covers full vehicle cabin and under-hood BCM mounting locations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual, rail-to-rail output, high-voltage op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSB611IYST | Single-channel version, identical specs and pinout per channel (SO8 pin 1–4 used; pins 5–8 NC) | Used when only one amplifier is needed - saves board space but lacks dual-channel integration | Select for cost-sensitive single-channel designs where footprint and BOM count outweigh channel reuse needs |
| LM358QPWRQ1 | Lower GBP (700 kHz), higher offset (3 mV max), wider supply (3–36 V), but not rail-to-rail output (1.5 V headroom) | Suitable for less demanding DC gain stages where rail-to-rail swing is unnecessary | Choose only if output swing >1.5 V from rails is acceptable and long-term offset drift tolerance exceeds ±1.6 mV |
Compared with TSB612IYST, TSB611IYST offers identical performance in half the channel count and area, while LM358QPWRQ1 trades rail-to-rail output and lower offset for broader legacy compatibility - making TSB612IYST optimal for new designs prioritizing precision, space efficiency, and automotive thermal compliance.
Availability
TSB612IYST is available at Aetrix Electronics and suitable for battery management systems, automotive HVAC controls, industrial 24 V PLC analog input modules, and body control modules requiring stable component supply across extended temperature and voltage ranges.
Supply support for TSB612IYST 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 ICs, sensors, and analog components for automotive, industrial, and consumer markets.
The TSB612IYST belongs to ST's high-voltage, low-power operational amplifier product line - engineered specifically for precision signal conditioning in automotive and industrial systems operating from 2.7 V to 36 V with extended temperature resilience.
FAQ
Is TSB612IYST pin-compatible with other ST dual op-amps in SO8?
Yes - TSB612IYST uses the industry-standard SO8 pinout for dual op-amps (OUT1, VCC−, IN+1, VCC+, IN−1, IN−2, IN+2, OUT2), matching pin assignments of TS912, TSZ121, and TSV912. This enables drop-in replacement in existing layouts where GBP, offset, and supply range align with design margins.
Can TSB612IYST drive capacitive loads directly?
No - the TSB612IYST exhibits reduced phase margin with >100 pF capacitive loads, risking instability. Figure 27 shows phase margin drops below 45° at 500 pF. For loads >100 pF, a series isolation resistor (Riso) of 10–100 Ω is required, as shown in Figure 35, to maintain stability without degrading bandwidth.
What is the maximum output current capability at 36 V supply?
At 36 V supply and 25 °C, TSB612IYST delivers ±60 mA short-circuit output current (sink/source), with typical continuous output current of ±40 mA into a 10 kΩ load. Derating applies above 85 °C ambient; see Figure 14 for full temperature-dependent IOUT vs. VOUT curves.
Does TSB612IYST require external ESD protection in automotive applications?
No - the device integrates 4 kV HBM ESD protection on all pins per JEDEC JESD22-A114F. However, if input signals exceed VCC+ or fall below VCC−, external series resistors (≥1 kΩ) must limit input current to ≤10 mA, as specified in Table 1 Absolute Maximum Ratings, to prevent damage to internal clamping diodes.
TSB612IYST 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:
- 0.2V/µs
- Gain Bandwidth Product:
- 560 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 103µA (x2 Channels)
- Current - Output / Channel:
- 70 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
TSB612IYST FAQ
1.How can I place an order for TSB612IYST through Aetrix?
Please submit a Request for Quotation (RFQ) for TSB612IYST 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 TSB612IYST reliable?
The price and inventory of TSB612IYST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSB612IYST is usually 5 days.
3.What payment methods are accepted for TSB612IYST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSB612IYST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSB612IYST?
TSB612IYST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSB612IYST 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 TSB612IYST?
For technical support, including TSB612IYST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSB612IYST requirements.
6.How does Aetrix verify that TSB612IYST is sourced from the original manufacturer or authorized distributors?
All TSB612IYST 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 TSB612IYST meets industry standards.
7.What is the process for return or replacement of TSB612IYST?
All TSB612IYST units undergo pre-shipment inspection (PSI). If there is an issue with TSB612IYST, 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 TSB612IYST part is unused and in its original packaging.
Return procedure for TSB612IYST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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