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STMicroelectronics TSB611ILT
- Part No.:
- TSB611ILT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TSB611ILT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:8,176
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Product details
Overview
TSB611ILT from STMicroelectronics is a single-channel, rail-to-rail output operational amplifier optimized for industrial and automotive signal conditioning. It delivers 560 kHz gain bandwidth product at 36 V supply while consuming only 125 µA per amplifier, features 1 mV max input offset voltage, -40 °C to 125 °C operating range, and supports rail-to-rail output swing within 100 mV of VCC+ and 110 mV of VCC− under 10 kΩ load - enabling precision sensing in battery-powered and high-voltage power supply monitoring circuits.
For engineers reviewing the TSB611ILT datasheet, TSB611ILT pinout, TSB611ILT application, or TSB611ILT equivalent, key selection criteria include its extended 2.7–36 V supply range, input common-mode voltage including ground, low 125 µA quiescent current at full voltage, 4 kV HBM ESD rating, and guaranteed performance across automotive temperature extremes - critical for robust analog front-end design in harsh environments.
Technical Context
The TSB611ILT employs a proprietary bipolar-CMOS process to achieve unity-gain stability with rail-to-rail output drive capability while maintaining low input bias current (≤10 nA typ) and high CMRR (≥105 dB at 36 V). Its input stage includes ESD protection diodes rated to 4 kV HBM and supports common-mode voltages from VCC− − 0.1 V to VCC+ − 1 V.
It operates as a single-supply or split-supply op amp with internal compensation ensuring stable operation into 100 pF capacitive loads without external compensation. The device's slew rate (0.15–0.20 V/µs positive, 0.12–0.16 V/µs negative at 36 V) and 29 nV/√Hz input noise at 1 kHz support medium-speed precision amplification in sensor interfaces and power supply feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 36 V - enables direct interface with 3.3 V microcontrollers and 24 V industrial buses without level-shifting. |
| Gain Bandwidth Product | 560 kHz typ at 36 V - supports closed-loop gains up to ~56 at 10 kHz with stable phase margin ≥58°. |
| Input Offset Voltage | 1 mV max (−40 °C to 125 °C) - ensures ≤10 mV error in 10× gain configurations over full temperature range. |
| Quiescent Current | 125 µA max per channel at 36 V - allows >10-year battery life in always-on 3.6 V coin-cell sensor nodes. |
| Rail-to-Rail Output | VOL ≤110 mV above VCC−, VOH ≤150 mV below VCC+ at 36 V - delivers full dynamic range into ADCs with 0–3.3 V or 0–5 V inputs. |
| Input Common-Mode Range | Includes ground (VCC− − 0.1 V to VCC+ − 1 V) - permits direct sensing of shunt resistors referenced to system ground. |
| ESD Rating | 4 kV HBM - meets IEC 61000-4-2 Level 3 for industrial equipment and automotive ECUs. |
Pinout & Package
TSB611ILT is housed in a 5-pin SOT23-5 package (JEDEC MO-178AA), with exposed pad for thermal enhancement and compact footprint (2.9 mm × 1.6 mm). Pin 1 = OUT, Pin 2 = VCC−, Pin 3 = IN+, Pin 4 = VCC+, Pin 5 = IN− (top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; drives 10 kΩ loads directly; requires no external pull-up/down for ADC interfacing. |
| 2 (VCC−) | Negative supply rail | Reference node for dual-supply operation; tied to ground in single-supply use; must be decoupled with 22 nF capacitor. |
| 3 (IN+) | Non-inverting input | High-impedance node (IIB ≤10 nA); accepts signals down to VCC− − 0.1 V; compatible with grounded sensor outputs. |
| 4 (VCC+) | Positive supply rail | Accepts up to 36 V; supplies internal biasing; bypass capacitor mandatory for startup stability and PSRR optimization. |
| 5 (IN−) | Inverting input | Used in transimpedance, difference, or inverting gain configurations; matched to IN+ for low VIO drift (≤6 µV/°C). |
Key Features
| Feature | Design Value |
|---|---|
| Extended supply range | Operates from 2.7 V to 36 V - eliminates need for separate LDOs in mixed-voltage systems (e.g., 3.3 V MCU + 24 V motor control). |
| Rail-to-rail output | Swings within 100 mV of VCC+ and 110 mV of VCC− at 36 V - maximizes usable ADC input range without external level-shifting. |
| Low input offset drift | ΔVIO/ΔT ≤ 6 µV/°C - limits temperature-induced error to <1.2 mV over −40 °C to 125 °C span, critical for uncalibrated sensors. |
| Automotive qualification | AEC-Q100 Grade 1 qualified - validated for continuous operation at 125 °C ambient, supporting engine bay and ADAS applications. |
| Unity-gain stable | No external compensation required - simplifies PCB layout for gain-of-1 buffers in current-sense and reference buffering. |
Applications
| Current Sensing in 24 V Industrial Drives | Battery Voltage Monitoring in Automotive ECUs |
|---|---|
|
Use Scenario: High-side current measurement using a 10 mΩ shunt in a 24 V motor drive inverter, with output fed to a 12-bit SAR ADC. IC Role / Device Role / Timing Role: Precision non-inverting amplifier with gain = 100, rejecting common-mode voltage up to 24 V while preserving millivolt-level shunt signals. Use Value: Input common-mode range extending to VCC+ − 1 V allows direct connection to high-side shunt; rail-to-rail output ensures full 0–3.3 V ADC range utilization. |
Use Scenario: Monitoring 12 V lead-acid and 48 V Li-ion battery packs in vehicle body control modules, requiring accuracy over −40 °C to 125 °C. IC Role / Device Role / Timing Role: Single-supply buffer amplifier scaling battery voltage via resistive divider to match 0–5 V ADC input range. Use Value: 1 mV max VIO and ≤6 µV/°C drift ensure ≤15 mV total error across temperature - sufficient for ±0.5% state-of-charge estimation. |
| Low-Power Sensor Signal Conditioning | Power Supply Feedback Loop Compensation |
|
Use Scenario: Amplifying thermistor or RTD bridge outputs in wireless IoT nodes powered by CR2032 batteries (3 V nominal). IC Role / Device Role / Timing Role: Low-quiescent-current (92 µA typ) instrumentation amplifier front-end, driving ADC with minimal loading. Use Value: 125 µA max ICC at 36 V scales linearly downward - draws only ~95 µA at 3 V, extending 10+ year battery life in sleep-mode operation. |
Use Scenario: Error amplifier in isolated DC-DC converter feedback path, compensating for line/load regulation and transient response. IC Role / Device Role / Timing Role: Transconductance amplifier shaping loop gain and phase margin; configured as Type II/III compensator. Use Value: 560 kHz GBP and 58° phase margin at 36 V enable stable 100 kHz switching frequency designs with fast load-step recovery (<2 µs overload recovery). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-channel, rail-to-rail output op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSZ121ILT | Lower VIO (150 µV max), lower ICC (55 µA max), but narrower supply range (1.5–5.5 V) | Optimized for ultra-low-power 3.3 V systems only; not suitable for 24 V industrial or automotive battery monitoring | Select when VIO < 200 µV and ICC < 60 µA are mandatory, and supply stays ≤5.5 V. |
| LMV321IDBVR | Higher VIO (3 mV max), wider temp range (−40 °C to 125 °C), same SOT23-5 package, but no AEC-Q100 qualification | Lacks automotive qualification and 36 V tolerance; limited to ≤5.5 V supplies and non-safety-critical industrial use | Choose for cost-sensitive consumer-grade designs where AEC-Q100 and 36 V operation are unnecessary. |
Compared with TSZ121ILT and LMV321IDBVR, the TSB611ILT uniquely balances 36 V operation, automotive qualification, and sub-125 µA quiescent current - making it the only option among the three viable for 24 V/48 V automotive powertrain and industrial control signal chains requiring long-term reliability.
Availability
TSB611ILT is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management, and low-power sensor interface applications requiring stable component supply across extended temperature and voltage ranges.
Supply support for TSB611ILT 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 industrial, automotive, and consumer markets.
The TSB611ILT belongs to ST's high-voltage, low-power operational amplifier product line, engineered specifically for precision signal conditioning in automotive and industrial systems where wide supply range, rail-to-rail output, and AEC-Q100 compliance are mandatory.
FAQ
What is the maximum capacitive load the TSB611ILT can drive without oscillation?
The TSB611ILT remains stable with up to 100 pF capacitive load when driving a 10 kΩ resistive load, as verified by phase margin ≥58° at 36 V supply. For loads >100 pF, a series isolation resistor (Riso) of 10–100 Ω is recommended - Figure 35 in DS11136 shows Riso vs. Cload curves confirming stability up to 1 nF with proper Riso selection.
Does the TSB611ILT support true single-supply operation with input signals at ground potential?
Yes. The input common-mode voltage range extends to VCC− − 0.1 V, allowing the IN+ and IN− pins to accept signals referenced directly to ground in single-supply configurations (e.g., VCC− = GND, VCC+ = 12 V). This enables direct interfacing with grounded sensors like thermistors or bridge transducers without level-shifting circuitry.
How does the TSB611ILT's ESD protection affect input circuit design?
The TSB611ILT integrates internal HBM diodes (4 kV rated), but input current must be limited to ≤10 mA per Table 1. If external signals exceed VCC+ or fall below VCC−, a series current-limiting resistor (e.g., 10 kΩ for ±20 V transients) or Schottky clamping diode is required - failure to limit current risks permanent damage despite built-in protection.
Is the TSB611ILT pin-compatible with other ST op amps in SOT23-5?
No. The TSB611ILT uses a non-standard pinout: Pin 1 = OUT, Pin 2 = VCC−, Pin 3 = IN+, Pin 4 = VCC+, Pin 5 = IN−. This differs from ST's TSZ121ILT (Pin 1 = IN−, Pin 2 = IN+, Pin 3 = VCC−, Pin 4 = OUT, Pin 5 = VCC+) and LMV321-family derivatives - PCB layout must be verified against DS11136 Figure 1 before substitution.
TSB611ILT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.18V/µs
- Gain Bandwidth Product:
- 480 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 92µA
- Current - Output / Channel:
- 28 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:
- SOT-23-5
TSB611ILT FAQ
1.How can I place an order for TSB611ILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSB611ILT 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 TSB611ILT reliable?
The price and inventory of TSB611ILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSB611ILT is usually 5 days.
3.What payment methods are accepted for TSB611ILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSB611ILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSB611ILT?
TSB611ILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSB611ILT 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 TSB611ILT?
For technical support, including TSB611ILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSB611ILT requirements.
6.How does Aetrix verify that TSB611ILT is sourced from the original manufacturer or authorized distributors?
All TSB611ILT 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 TSB611ILT meets industry standards.
7.What is the process for return or replacement of TSB611ILT?
All TSB611ILT units undergo pre-shipment inspection (PSI). If there is an issue with TSB611ILT, 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 TSB611ILT part is unused and in its original packaging.
Return procedure for TSB611ILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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