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STMicroelectronics TSZ151ILT
- Part No.:
- TSZ151ILT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TSZ151ILT.pdf
- Description:
- SOT 23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,948
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Product details
Overview
TSZ151ILT from STMicroelectronics is a single-channel, zero-drift, rail-to-rail input/output operational amplifier optimized for high-accuracy automotive sensor signal conditioning. It delivers ±7 µV max offset voltage at 25 °C, 1.6 MHz gain bandwidth, and operates from 1.8 V to 5.5 V supply with only 210 µA quiescent current - enabling precision current sensing in battery-powered ADAS modules.
For engineers reviewing the TSZ151ILT datasheet, TSZ151ILT pinout, TSZ151ILT application, or TSZ151ILT equivalent, this page provides verified pin mapping for SOT23-5, confirmed AEC-Q100 qualification, real-world noise performance (27 nV/√Hz), EMI rejection up to 91 dB at 2.4 GHz, and validated alternatives for automotive-grade op amp selection.
Technical Context
The TSZ151ILT employs auto-zeroing architecture to achieve near-zero drift (±10 µV over –40 °C to 125 °C) and ultra-low input bias current (≤200 pA at 25 °C). Its rail-to-rail input stage supports common-mode voltages from VCC– –0.1 V to VCC+ +0.1 V, while the output drives within 30 mV of either rail under 10 kΩ load.
Designed for automotive current shunt measurement, it features 84–91 dB EMI rejection across 400–2400 MHz, 60° phase margin with 100 pF capacitive load, and overload recovery in as little as 2 µs at 1.8 V - ensuring stable operation in noisy powertrain and chassis control environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | ±7 µV max at 25 °C; enables <1 LSB error in 16-bit ADC systems without calibration |
| Offset Drift | ≤36 nV/°C over full temperature range; ensures <0.5 µV total drift across –40 °C to 125 °C |
| Supply Range | 1.8 V to 5.5 V; compatible with 2-cell Li-ion, 3.3 V microcontrollers, and 5 V legacy automotive domains |
| Quiescent Current | 210 µA typical at 5 V; allows continuous operation in always-on vehicle subsystems with <1 mW power budget |
| Gain Bandwidth | 1.6 MHz; supports closed-loop bandwidth >100 kHz for fast-response current loop feedback |
| EMI Rejection | 91 dB at 2.4 GHz; suppresses cellular/WiFi interference in infotainment-adjacent sensor nodes |
| Output Drive | ±20 mA min at 5 V; directly interfaces with low-side shunt amplifiers and analog front-ends |
Pinout & Package
SOT23-5 package: compact 2.9 mm × 1.6 mm footprint with exposed pad option for thermal enhancement; rated for 250 °C/W junction-to-ambient thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplified output node; rail-to-rail swing supports full-scale ADC input without level-shifting |
| 2 | VCC– | Negative supply reference; connects to system ground or negative rail in dual-supply configurations |
| 3 | IN+ | Non-inverting input; ultra-low bias current (50 pA typ) prevents voltage error in high-impedance sensor bridges |
| 4 | IN– | Inverting input; matched input impedance enables precise differential gain configuration |
| 5 | VCC+ | Positive supply input; accepts 1.8–5.5 V with internal regulation for stable internal biasing |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates manual calibration and reduces thermal drift-induced errors in long-duration vehicle monitoring |
| Rail-to-rail I/O | Maximizes dynamic range across supply rails - critical for low-voltage shunt sensing in 12 V automotive systems |
| AEC-Q100 Grade 1 | Qualified for –40 °C to 125 °C ambient operation with full parametric validation per automotive reliability standards |
| High EMI immunity | 91 dB rejection at 2.4 GHz prevents RF rectification artifacts in telematics-integrated ECUs |
| Low-noise design | 27 nV/√Hz input voltage noise at 1 kHz enables sub-µV resolution in strain gauge and Hall-effect interfaces |
Applications
| Automotive Battery Monitoring | Electric Power Steering (EPS) Torque Sensing |
|---|---|
Use Scenario: Real-time cell voltage and current monitoring in 12 V lead-acid and 48 V mild-hybrid battery management systems. IC Role / Device Role / Timing Role: Precision current-sense amplifier in high-side shunt configuration, feeding isolated ΣΔ ADC. Use Value: ±7 µV offset ensures <0.1% full-scale error over lifetime without recalibration, meeting ISO 26262 ASIL-B diagnostic coverage requirements. |
Use Scenario: Amplifying Wheatstone bridge output from torque sensors in EPS motor control units. IC Role / Device Role / Timing Role: Signal conditioner for analog torque feedback path with <10 µs latency requirement. Use Value: 1.6 MHz GBP and 0.8 V/µs slew rate support closed-loop response <50 µs, enabling smooth assist torque delivery during rapid steering inputs. |
| Brake-by-Wire Pressure Transducers | ADAS Radar Power Supply Monitoring |
Use Scenario: Conditioning piezoresistive pressure sensor signals in electro-hydraulic brake (EHB) actuators. IC Role / Device Role / Timing Role: Low-drift buffer and gain stage preceding SAR ADC sampling at 100 kSPS. Use Value: ≤10 µV total offset drift over temperature guarantees <0.05% FS accuracy across vehicle operating range - critical for functional safety validation. |
Use Scenario: Monitoring DC-DC converter output stability for 77 GHz radar MMIC power supplies. IC Role / Device Role / Timing Role: High-rejection comparator input stage detecting <10 mV ripple on 5 V supply rails. Use Value: 91 dB EMI rejection at 2.4 GHz prevents false fault triggers from nearby Bluetooth/WiFi co-location in radar ECU enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision automotive op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSZ121ILT | Lower bandwidth (400 kHz), lower current (31 µA), same offset spec | Better suited for ultra-low-power tire pressure sensors where speed is secondary | Select when supply current <50 µA is mandatory and bandwidth <50 kHz suffices |
| TSZ181ILT | Higher bandwidth (3 MHz), higher current (800 µA), same offset spec | Required for high-speed motor phase current sensing in inverter gate drivers | Select when closed-loop bandwidth >500 kHz is needed and 800 µA supply is acceptable |
Compared with TSZ121ILT and TSZ181ILT, the TSZ151ILT uniquely balances 1.6 MHz bandwidth and 210 µA consumption - making it optimal for mid-speed, high-accuracy applications like EPS torque sensing and brake pressure transduction where both speed and efficiency matter.
Availability
TSZ151ILT is available at Aetrix Electronics and suitable for automotive battery monitoring, electric power steering torque sensing, brake-by-wire pressure transducers, and ADAS radar power supply monitoring requiring stable component supply across extended temperature ranges.
Supply support for TSZ151ILT 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 silicon solutions for automotive, industrial, and consumer markets since 1987.
The TSZ151 series belongs to ST's precision analog portfolio, engineered specifically for AEC-Q100-compliant automotive sensor signal conditioning - emphasizing zero-drift stability, EMI robustness, and low-voltage operability in safety-critical ECUs.
FAQ
What is the maximum capacitive load the TSZ151ILT can drive stably?
The TSZ151ILT maintains 60° phase margin with up to 100 pF capacitive load at unity gain, as verified in DS14459 Figure 26–28. For loads >100 pF, a series isolation resistor (RISO ≥ 50 Ω) is required to prevent peaking and overshoot - confirmed by Figure 33–34 showing stable step response with RISO = 50 Ω at 1 nF.
Does the TSZ151ILT support dual-supply operation?
Yes - the TSZ151ILT operates with split supplies (e.g., ±2.5 V) as long as total supply voltage remains between 1.8 V and 5.5 V and common-mode input range stays within VCC– –0.1 V to VCC+ +0.1 V. Table 5 confirms Vicm extends to both rails, and absolute maximum ratings allow VCC– to be negative relative to VCC+.
How does the EMI rejection performance vary with frequency?
EMI rejection is frequency-dependent: 84 dB at 400 MHz, 87 dB at 900 MHz, 90 dB at 1.8 GHz, and 91 dB at 2.4 GHz (Table 6). This monotonic improvement results from internal filtering and layout hardening - critical for suppressing interference from LTE, WiFi, and Bluetooth bands in modern vehicle architectures.
Is the exposed pad on the SOT23-5 package electrically connected?
No - the SOT23-5 variant (TSZ151ILT) does not feature an exposed thermal pad. Only DFN8 packages (e.g., TSZ152IQT) include an exposed pad, which may be left floating or connected to VCC– per DS14459 Section 1.3. The SOT23-5 uses standard 5-pin metalized plastic construction with no thermal pad.
TSZ151ILT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Chopper (Zero-Drift)
- Number of Circuits:
- 1
- Output Type:
- Single Ended, Rail-to-Rail
- Slew Rate:
- 0.8V/µs
- Gain Bandwidth Product:
- 1.6 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 210µA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TSZ151ILT FAQ
1.How can I place an order for TSZ151ILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSZ151ILT 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 TSZ151ILT reliable?
The price and inventory of TSZ151ILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSZ151ILT is usually 5 days.
3.What payment methods are accepted for TSZ151ILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSZ151ILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSZ151ILT?
TSZ151ILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSZ151ILT 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 TSZ151ILT?
For technical support, including TSZ151ILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSZ151ILT requirements.
6.How does Aetrix verify that TSZ151ILT is sourced from the original manufacturer or authorized distributors?
All TSZ151ILT 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 TSZ151ILT meets industry standards.
7.What is the process for return or replacement of TSZ151ILT?
All TSZ151ILT units undergo pre-shipment inspection (PSI). If there is an issue with TSZ151ILT, 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 TSZ151ILT part is unused and in its original packaging.
Return procedure for TSZ151ILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSZ151ILT Tags
-
LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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