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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

STMicroelectronics TSZ151IYCT

Name: TSZ151IYCT
Brand: STMicroelectronics
SKU: TSZ151IYCT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSZ151IYCT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 5-TSSOP, SC-70-5, SOT-353

Datasheet:: TSZ151IYCT.pdf

Description:: SOT 323 5LDS

Quantity:: RFQ Add To RFQ list

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Inventory:3,000

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Product details

Overview

TSZ151IYCT from STMicroelectronics is a single, rail-to-rail input/output zero-drift 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 product, 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 TSZ151IYCT datasheet, TSZ151IYCT pinout, TSZ151IYCT application, or TSZ151IYCT equivalent, this page provides verified technical context, SC70-5 package pin mapping, AEC-Q100 qualification status, and real-world use cases in automotive current measurement and high-stability transducer interfaces - all grounded in DS14459 Rev 4 (Jan 2025).

Technical Context

This op amp uses auto-zeroing architecture to achieve near-zero drift (±10 µV over −40 °C to +125 °C) and ultra-low input bias current (≤300 pA). Its rail-to-rail I/O supports full dynamic range utilization in low-voltage systems, while the 1.6 MHz GBP enables stable closed-loop operation up to ~100 kHz with 10 kΩ load and 100 pF capacitance.

The device features 84–91 dB EMI rejection across 400–2400 MHz, 115–135 dB open-loop gain, and 115–132 dB CMRR - making it suitable for noisy automotive environments where sensor signals must be amplified without corruption from RF interference or supply ripple.

Key Specifications

Parameter	Value and Actual Design Meaning
Offset voltage	±7 µV max at 25 °C; enables <1 LSB error in 16-bit ADC front-ends without calibration
Offset drift	≤36 nV/°C over full temperature range; ensures <0.5 µV total drift across −40 °C to +125 °C
Supply voltage	1.8 V to 5.5 V; compatible with 2-cell Li-ion, 3.3 V microcontrollers, and legacy 5 V domains
Quiescent current	210 µA at 5 V; allows continuous operation in always-on vehicle subsystems with <1 mW power budget
Gain bandwidth	1.6 MHz; supports stable unity-gain buffer or G=10 amplification up to ~150 kHz
Input bias current	≤200 pA typ at 25 °C; preserves accuracy in high-impedance pH, thermopile, or strain gauge interfaces
EMI rejection	91 dB at 2.4 GHz; mitigates cellular/WiFi-induced offset shifts in infotainment-adjacent sensors

Pinout & Package

TSZ151IYCT is housed in a 5-pin SC70-5 package (2.0 mm × 1.25 mm, 0.65 mm pitch), optimized for space-constrained automotive PCBs and thermally efficient layout with low R_th-JA of 205 °C/W.

Pin	Circuit Role	Design Meaning
1	IN+	Non-inverting input; accepts common-mode voltages from V_CC− −0.1 V to V_CC+ +0.1 V
2	V_CC−	Negative supply rail; must be connected to system ground or negative rail; exposed pad optional
3	IN−	Inverting input; used for feedback in standard configurations; matched to IN+ for CMRR optimization
4	OUT	Rail-to-rail output; drives loads down to 2 kΩ while maintaining ≤70 mV drop at 125 °C
5	V_CC+	Positive supply rail; supports 1.8–5.5 V operation; decoupling capacitor required within 2 mm

Key Features

Feature	Design Value
AEC-Q100 Grade 1 qualified	Validated for −40 °C to +125 °C operation in engine bay and chassis control units
Rail-to-rail I/O	Enables full-scale signal capture from 0 V to V_CC without headroom loss in low-voltage systems
Zero-drift architecture	Eliminates manual calibration and reduces thermal error accumulation in long-duration measurements
High EMI immunity	84–91 dB rejection across 400–2400 MHz prevents GSM/LTE-induced offset jumps in telematics modules
Ultra-low input bias current	Preserves signal integrity in megohm-range sensor bridges and piezoelectric transducers

Applications

Automotive Current Sensing

Battery Management Monitoring

Use Scenario: High-side shunt-based current measurement in 12 V starter-battery monitoring circuits.

IC Role / Device Role / Timing Role: Precision difference amplifier with G = 100, rejecting common-mode voltage up to 16 V while resolving ±50 mA changes.

Use Value: ±7 µV offset enables ±0.5 mΩ shunt tolerance without trimming; 1.6 MHz GBP supports fast transient detection during cranking events.

Use Scenario: Cell voltage balancing feedback in 4S LiFePO₄ packs for EV auxiliary systems.

IC Role / Device Role / Timing Role: Rail-to-rail buffer isolating cell taps from ADC inputs while maintaining 0.1% linearity over temperature.

Use Value: 210 µA supply current extends sleep-mode battery life; AEC-Q100 qualification ensures reliability across charge/discharge cycles.

Engine Coolant Temperature Interface

Brake Pressure Transducer Signal Conditioning

Use Scenario: Amplifying output of NTC thermistors in coolant loop with 2-wire RTD compensation.

IC Role / Device Role / Timing Role: Low-noise, low-drift instrumentation amplifier stage with 0.5 µV_PP 0.1–10 Hz noise floor.

Use Value: ±10 µV max offset drift over −40 °C to +125 °C eliminates thermal zero-shift errors in cold-start diagnostics.

Use Scenario: Conditioning millivolt-level output from piezoresistive brake pressure sensors in ABS modules.

IC Role / Device Role / Timing Role: G = 200 differential amplifier with EMI-hardened input stage rejecting ignition noise bursts.

Use Value: 91 dB EMI rejection at 2.4 GHz prevents false pressure spikes during keyless entry RF transmission.

Equivalent & Alternatives

The following parts are listed as comparable options for similar zero-drift op amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TSZ121ILT	Lower bandwidth (400 kHz), lower current (31 µA), same SC70-5 package	Better suited for ultra-low-power wake-up sensors; insufficient GBP for fast current transients	Select when power budget <50 µA dominates over speed requirements
TSZ181IYCT	Higher bandwidth (3 MHz), higher current (800 µA), same SC70-5 package	Required for >200 kHz signal chains (e.g., motor phase current); increases thermal load in sealed enclosures	Select when slew rate >1.5 V/µs or settling time <1 µs is mandatory

Compared with TSZ121ILT, TSZ151IYCT trades 4× higher bandwidth for 7× higher supply current; compared with TSZ181IYCT, it cuts power by 65% while retaining sufficient speed for most automotive sensor loops below 100 kHz.

Availability

TSZ151IYCT is available at Aetrix Electronics and suitable for automotive current sensing, battery management monitoring, engine coolant temperature interface, and brake pressure transducer signal conditioning requiring stable component supply across extended temperature ranges and AEC-Q100 compliance.

Supply support for TSZ151IYCT 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, MCU, power, and automotive-grade ICs since 1987.

The TSZ151 belongs to ST's precision zero-drift op amp family, engineered specifically for AEC-Q100-compliant automotive sensor signal conditioning where offset stability, EMI resilience, and low-voltage operation are non-negotiable.

FAQ

What is the maximum capacitive load the TSZ151IYCT can drive stably?

The TSZ151IYCT maintains phase margin ≥60° with up to 100 pF capacitive load when configured as a unity-gain buffer with 10 kΩ load. Driving >100 pF requires external isolation resistor (R_ISO ≥50 Ω) per Figure 33–34 in DS14459; instability manifests as overshoot >10% in step response.

Does TSZ151IYCT support dual-supply operation?

Yes - TSZ151IYCT operates with split supplies (e.g., ±2.5 V) as long as total V_CC remains between 1.8 V and 5.5 V and both rails stay within absolute maximum ratings (V_CC+ − V_CC− ≤ 6 V). Pin 2 is V_CC−, not ground; common-mode range extends 0.1 V beyond each rail.

How does the SC70-5 package affect thermal performance in automotive under-hood layouts?

With R_th-JA = 205 °C/W (JEDEC 2s2p board), TSZ151IYCT in SC70-5 reaches ~105 °C junction temperature at 210 µA and 125 °C ambient - within its 150 °C T_JMAX. For sustained 125 °C ambient operation, keep power dissipation <15 mW and avoid copper voids under the exposed pad.

Is the exposed pad on TSZ151IYCT electrically connected or thermal-only?

The SC70-5 package has no exposed pad; that feature applies only to DFN8 variants (e.g., TSZ152IQT). TSZ151IYCT uses standard SC70-5 with 5 perimeter leads - no thermal pad, no solder mask defined for thermal enhancement. Thermal path relies solely on leadframe conduction.

TSZ151IYCT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 5-TSSOP, SC-70-5, SOT-353

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-323-5

TSZ151IYCT FAQ

1.How can I place an order for TSZ151IYCT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSZ151IYCT 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 TSZ151IYCT reliable?

The price and inventory of TSZ151IYCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSZ151IYCT is usually 5 days.

3.What payment methods are accepted for TSZ151IYCT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSZ151IYCT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSZ151IYCT?

TSZ151IYCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSZ151IYCT 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 TSZ151IYCT?

For technical support, including TSZ151IYCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSZ151IYCT requirements.

6.How does Aetrix verify that TSZ151IYCT is sourced from the original manufacturer or authorized distributors?

All TSZ151IYCT 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 TSZ151IYCT meets industry standards.

7.What is the process for return or replacement of TSZ151IYCT?

All TSZ151IYCT units undergo pre-shipment inspection (PSI). If there is an issue with TSZ151IYCT, 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 TSZ151IYCT part is unused and in its original packaging.

Return procedure for TSZ151IYCT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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