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STMicroelectronics TSZ182IST
- Part No.:
- TSZ182IST
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TSZ182IST.pdf
- Description:
- IC OPAMP ZER-DRIFT 2CIRC 8MINISO
- Quantity:
- Payment:
- Shipping:
Inventory:7,801
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Product details
Overview
TSZ182IST from STMicroelectronics is a dual precision chopper-stabilized operational amplifier designed for high-accuracy sensor signal conditioning in automotive and medical systems. It delivers 25 µV max input offset voltage at 25 °C, 35 µV over –40 °C to 125 °C, rail-to-rail I/O, 3 MHz gain bandwidth product, and operates from 2.2 V to 5.5 V supply.
For engineers reviewing the TSZ182IST datasheet, TSZ182IST pinout, TSZ182IST application, or TSZ182IST equivalent, this device is selected for ultra-low-drift analog front-ends where calibration-free accuracy, EMI robustness (EMIRR up to 85 dB at 2.4 GHz), and extended temperature stability are critical in current sensing and transducer interfaces.
Technical Context
The TSZ182IST implements a 2.4 MHz chopper-stabilized architecture that continuously corrects input offset and cancels 1/f noise in both time and frequency domains. Its dual-channel design shares no internal coupling-channel separation exceeds 120 dB at 1 kHz-enabling independent high-fidelity signal paths.
It features rail-to-rail input common-mode range (VCC– − 0.1 V to VCC+ + 0.1 V) and output swing within 40 mV of rails under 10 kΩ load, with guaranteed performance across –40 °C to 125 °C and supply voltages from 2.2 V to 5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input offset voltage | 25 µV max at 25 °C; enables <0.01% error in 2.5 V full-scale current-sense amplifiers without trimming |
| Offset drift | 0.1 µV/°C over –40 to 125 °C; ensures <1.7 µV total drift across full automotive temp range |
| Gain bandwidth product | 3 MHz at 5 V; supports stable closed-loop gain ≥10 up to 300 kHz with 0.1% settling in ≤600 ns |
| Supply current per channel | 1 mA max at 5 V; allows dual-channel precision amplification in battery-powered 5 V systems with <2 mW total dissipation |
| EMI rejection ratio | 85 dB at 2.4 GHz; suppresses cellular/WiFi interference in automotive cabin electronics without external filtering |
| Common-mode rejection | 126 dB at 5 V, 25 °C; rejects >99.9997% of shared-mode noise in bridge sensor configurations |
| Input bias current | 200 pA typ at 25 °C; minimizes voltage error across >10 MΩ source impedances in thermistor or pH sensor interfaces |
Pinout & Package
TSZ182IST is supplied in MiniSO8 package (3.0 mm × 3.0 mm, 0.65 mm pitch), with exposed pad electrically connected to VCC– for thermal and noise performance optimization.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1–) | Inverting input, Channel 1 | High-impedance node accepting differential signals; protected by ESD diodes to rails (±0.5 V clamp) |
| 2 (IN1+) | Non-inverting input, Channel 1 | Rail-to-rail CM range (VCC– − 0.1 V to VCC+ + 0.1 V); supports direct connection to resistive sensors |
| 3 (OUT1) | Output, Channel 1 | Capable of sourcing 25 mA / sinking 29 mA; swings within 40 mV of rails into 10 kΩ load |
| 4 (VCC–) | Negative supply | Ground reference for dual-supply operation or system ground in single-supply; connects to exposed pad |
| 5 (VCC+) | Positive supply | 2.2–5.5 V operation; PSRR = 123 dB at 25 °C ensures immunity to power rail ripple |
| 6 (IN2–) | Inverting input, Channel 2 | Independent of Channel 1; channel separation >120 dB prevents crosstalk in dual-path signal chains |
| 7 (IN2+) | Non-inverting input, Channel 2 | Identical specs to IN1+; enables matched dual instrumentation amplifier topologies |
| 8 (OUT2) | Output, Channel 2 | Full rail-to-rail drive capability; supports simultaneous high-speed acquisition on two channels |
Key Features
| Feature | Design Value |
|---|---|
| Chopper stabilization at 2.4 MHz | Eliminates 1/f noise and reduces offset drift to 0.1 µV/°C - enabling calibration-free designs in automotive ECUs |
| Rail-to-rail input/output | Supports full dynamic range utilization from 0 V to VCC in single-supply 3.3 V systems, maximizing ADC resolution |
| Automotive qualification (AEC-Q100 Grade 1) | Guaranteed operation from –40 °C to 125 °C ambient; qualified for engine control, battery monitoring, and ADAS sensor nodes |
| Low-noise density (37 nV/√Hz) | Preserves SNR in low-level sensor outputs (e.g., strain gauges, RTDs) without requiring additional filtering stages |
| High EMI rejection (85 dB @ 2.4 GHz) | Meets CISPR 25 Class 5 requirements without shielded enclosures or ferrite beads in infotainment and telematics modules |
Applications
| Automotive Current Sensing | Medical ECG Front-End |
|---|---|
|
Use Scenario: High-side shunt-based battery current monitoring in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Dual-channel precision op-amp configured as current-sense amplifier (INA) with matched gain resistors and offset-canceled differential output. Use Value: 25 µV offset enables ±1% full-scale accuracy over temperature without calibration; 3 MHz bandwidth supports transient detection during load dump events. |
Use Scenario: Low-noise, DC-coupled amplification of microvolt-level biopotential signals from dry electrodes. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier core with rail-to-rail inputs accepting ±300 mV electrode offsets and driving 24-bit delta-sigma ADC. Use Value: 0.1 µV/°C drift prevents baseline wander during 37 °C patient temperature shifts; 37 nV/√Hz noise preserves diagnostic fidelity below 100 Hz. |
| Industrial Pressure Transducer | EV Battery Cell Voltage Monitoring |
|
Use Scenario: Signal conditioning for piezoresistive pressure sensors in HVAC and process control systems. IC Role / Device Role / Timing Role: Dual-op-amp implementing 3-op-amp IA topology with matched TSZ182IST channels for gain and reference buffering. Use Value: 126 dB CMRR rejects common-mode noise from 4–20 mA loop interference; rail-to-rail I/O accommodates wide sensor output spans (0–100 mV). |
Use Scenario: Precision voltage measurement of individual Li-ion cells in battery management systems (BMS) with 1 mV resolution. IC Role / Device Role / Timing Role: Dual-channel buffer and level-shifter for isolated cell voltage sampling, rejecting pack ground bounce and switching noise. Use Value: 85 dB EMIRR suppresses noise from adjacent DC-DC converters; 25 µV offset ensures <0.5 mV absolute error at 4.2 V cell voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision chopper-stabilized op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSZ122IST | Lower GBP (400 kHz vs. 3 MHz), lower supply current (40 µA vs. 1 mA), same offset spec (25 µV) | Better suited for ultra-low-power, low-bandwidth sensor nodes (e.g., wireless temperature monitors) where speed is not critical | Select TSZ122IST only when bandwidth <50 kHz suffices and sub-100 µA quiescent current is mandatory |
| OPA2189IDGKR | Higher offset drift (0.003 µV/°C vs. 0.1 µV/°C), higher noise (5.2 nV/√Hz), no AEC-Q100 qualification | Targeted at lab-grade test equipment and industrial PLCs-not automotive or medical certified environments | Choose OPA2189 only for non-automotive applications requiring ultra-low drift at room temperature with higher bandwidth (12 MHz) |
Compared with TSZ122IST and OPA2189IDGKR, TSZ182IST uniquely balances automotive-grade reliability, 3 MHz bandwidth, and sub-µV/°C drift-making it the only option for AEC-Q100-compliant, high-speed precision sensing in harsh environments.
Availability
TSZ182IST is available at Aetrix Electronics and suitable for automotive current sensing, medical ECG front-ends, industrial pressure transducers, and EV battery cell voltage monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TSZ182IST 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, analog ICs, power management devices, and MEMS sensors for industrial, automotive, and consumer markets.
TSZ182IST belongs to ST's TSZ18x zero-drift op-amp family, engineered specifically for calibration-free, high-accuracy signal conditioning in automotive and medical applications demanding AEC-Q100 Grade 1 qualification and extended temperature operation.
FAQ
What is the maximum capacitive load the TSZ182IST can drive without external compensation?
The TSZ182IST remains stable with up to 200 pF capacitive load in unity-gain configuration without added series resistance. For loads exceeding 200 pF, a small isolation resistor (e.g., 47 Ω for 1 nF) is recommended at the output to maintain ≥46° phase margin and prevent overshoot, as verified in Figure 51–53 of DS11863 Rev 8.
Does the exposed pad on the MiniSO8 package require PCB connection?
Yes-the exposed pad on the TSZ182IST MiniSO8 package must be soldered to a PCB copper pour connected to VCC– (ground in single-supply use). This connection improves thermal dissipation (RthJA = 190 °C/W), reduces noise coupling, and enhances EMI immunity per layout recommendations in Section 5.7 of the datasheet.
Can TSZ182IST operate with a 2.2 V supply while maintaining full AC performance?
Yes-TSZ182IST is fully characterized and guaranteed at 2.2 V: GBP is 1.6 MHz (min), slew rate is 2.5 V/µs (min), and settling time to 0.1% is 500 ns at 2.2 V. All DC specs-including 35 µV max offset over temperature-are maintained, enabling operation in energy-harvesting and low-voltage IoT sensor nodes.
How does the chopper clock frequency affect system-level EMI design?
The internal 2.4 MHz chopper clock is fixed and not user-accessible, but its harmonics extend into the 2.4 GHz ISM band. The device's 85 dB EMI rejection at 2.4 GHz (Table 5) means external RF energy at that frequency couples <0.0002% into the output-eliminating need for clock shielding or spread-spectrum techniques in Bluetooth/WiFi coexistence scenarios.
TSZ182IST 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:
- Zero-Drift
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 4.7V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 pA
- Voltage - Input Offset:
- 25 µV
- Current - Supply:
- 700µA (x2 Channels)
- Current - Output / Channel:
- 29 mA
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MiniSO
TSZ182IST FAQ
1.How can I place an order for TSZ182IST through Aetrix?
Please submit a Request for Quotation (RFQ) for TSZ182IST 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 TSZ182IST reliable?
The price and inventory of TSZ182IST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSZ182IST is usually 5 days.
3.What payment methods are accepted for TSZ182IST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSZ182IST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSZ182IST?
TSZ182IST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSZ182IST 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 TSZ182IST?
For technical support, including TSZ182IST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSZ182IST requirements.
6.How does Aetrix verify that TSZ182IST is sourced from the original manufacturer or authorized distributors?
All TSZ182IST 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 TSZ182IST meets industry standards.
7.What is the process for return or replacement of TSZ182IST?
All TSZ182IST units undergo pre-shipment inspection (PSI). If there is an issue with TSZ182IST, 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 TSZ182IST part is unused and in its original packaging.
Return procedure for TSZ182IST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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