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STMicroelectronics TSZ182IYDT
- Part No.:
- TSZ182IYDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSZ182IYDT.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:10,163
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Product details
Overview
TSZ182IYDT from STMicroelectronics is a dual precision rail-to-rail input/output operational amplifier with chopper-stabilized architecture, delivering 25 µV max input offset voltage at 25 °C and 35 µV over -40 °C to 125 °C, 3 MHz gain bandwidth product, and 1 mA max supply current at 5 V. It targets high-accuracy automotive current sensing and medical sensor signal conditioning where drift-free DC performance is critical.
For engineers reviewing the TSZ182IYDT datasheet, TSZ182IYDT pinout, TSZ182IYDT application, or TSZ182IYDT equivalent, this page provides verified package mapping (DFN8 2x2), confirmed chopper-based zero-drift operation, real-world EMI rejection (up to 85 dB at 2.4 GHz), and validated alternatives for precision dual op-amp replacement in automotive and medical designs.
Technical Context
The TSZ182IYDT implements a 2.4 MHz chopper modulation/demodulation architecture that cancels input offset voltage and 1/f noise in both time and frequency domains. Its dual-channel design shares a common substrate but maintains >120 dB channel separation at 1 kHz, enabling independent high-fidelity signal paths in compact space-constrained systems.
It operates across 2.2–5.5 V supply with 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. Input bias current remains ≤300 pA over full temperature range, supporting high-impedance sensor interfaces without significant error contribution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 25 µV max at 25 °C; enables <0.01% gain error in 100× current-sense amplifiers without calibration |
| Offset Drift | 0.1 µV/°C over −40 to 125 °C; ensures <12.5 µV total drift across full automotive temp range |
| Gain Bandwidth Product | 3 MHz at 5 V; supports accurate amplification of 100 kHz sensor signals with ≥30 dB open-loop gain |
| Supply Current per Channel | 1 mA max at 5 V; allows dual-channel precision operation within 2 mA total budget for battery-sensitive modules |
| EMI Rejection Ratio | 85 dB at 2.4 GHz; suppresses cellular/WiFi interference in vehicle cabin electronics and portable medical devices |
| Common-Mode Rejection | 126 dB at 5 V, 25 °C; rejects >99.9997% of shared-mode noise in shunt-based current measurement |
| Output Voltage Swing | Within 40 mV of rails into 10 kΩ; preserves dynamic range in low-voltage 3.3 V and 2.2 V systems |
Pinout & Package
TSZ182IYDT is packaged in DFN8 2x2 mm with exposed thermal pad (connected to VCC− or left floating). This 8-pin micropackage supports high-density PCB layouts while maintaining thermal resistance of 57 °C/W junction-to-ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1−) | Inverting input, Channel 1 | Accepts differential signal with rail-to-rail common-mode range; internal ESD diodes clamp to rails if exceeded by >0.5 V |
| 2 (IN1+) | Non-inverting input, Channel 1 | High-impedance CMOS node; input bias current ≤300 pA enables direct connection to high-Z sensors |
| 3 (VCC−) | Negative supply rail | Reference for all internal circuitry; exposed pad may be soldered to this net for improved thermal performance |
| 4 (OUT1) | Output, Channel 1 | Rail-to-rail capable; drives 10 kΩ load to within 40 mV of VCC− or VCC+; stable with ≥200 pF capacitive load |
| 5 (OUT2) | Output, Channel 2 | Electrically isolated from OUT1; >120 dB channel separation prevents crosstalk in dual-path signal chains |
| 6 (IN2+) | Non-inverting input, Channel 2 | Independent high-impedance node; identical specs to IN1+; supports synchronous dual-sensor acquisition |
| 7 (IN2−) | Inverting input, Channel 2 | Differential input with same ESD protection and voltage limits as IN1− |
| 8 (VCC+) | Positive supply rail | Accepts 2.2–5.5 V; PSRR ≥123 dB ensures immunity to power rail noise in noisy automotive environments |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-stabilized architecture | 2.4 MHz modulation clock eliminates 1/f noise and reduces offset drift to 0.1 µV/°C |
| Rail-to-rail I/O | Input common-mode extends 0.1 V beyond rails; output swings to within 40 mV - maximizes usable dynamic range in low-voltage systems |
| Automotive qualification | AEC-Q100 Grade 1 (−40 to 125 °C) certified; qualified for engine control, battery monitoring, and ADAS sensor interfaces |
| Ultra-low input bias current | ≤300 pA over full temperature range - avoids loading errors in piezoresistive, thermopile, or pH sensor front-ends |
| High EMI immunity | 85 dB rejection at 2.4 GHz - maintains accuracy in proximity to Bluetooth/WiFi antennas and switching power supplies |
Applications
| Automotive Battery Monitoring | Medical ECG Front-End |
|---|---|
|
Use Scenario: Real-time measurement of cell voltage and pack current in 12 V and 48 V EV battery management systems. IC Role / Device Role / Timing Role: Dual-channel precision amplifier for simultaneous shunt-based current sensing and high-side voltage monitoring with matched gain paths. Use Value: 25 µV offset and 0.1 µV/°C drift enable ±0.1% current accuracy over full temperature range without factory calibration. |
Use Scenario: Amplification and filtering of microvolt-level biopotential signals from dry-electrode ECG leads. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier driver with rail-to-rail input to preserve signal headroom during baseline wander. Use Value: 37 nV/√Hz input noise at 1 kHz and 120 dB channel separation prevent cross-talk between limb leads in multi-channel acquisition. |
| Industrial Pressure Transducer Interface | High-Accuracy Thermocouple Amplifier |
|
Use Scenario: Signal conditioning for silicon piezoresistive pressure sensors in HVAC and process control transmitters. IC Role / Device Role / Timing Role: Low-drift, low-noise gain stage for Wheatstone bridge outputs with minimal thermal EMF contribution. Use Value: 0.1 µV/°C offset drift and 108 dB CMRR at 5 V ensure <0.05% FS error over −25 to 85 °C ambient operating range. |
Use Scenario: Cold-junction compensation and linearization amplifier for Type-K thermocouples in industrial ovens and furnaces. IC Role / Device Role / Timing Role: Precision buffer and gain stage for thermocouple voltage and RTD reference measurements in same IC. Use Value: 25 µV offset and 126 dB PSRR reject supply ripple and ground noise that would otherwise corrupt sub-millivolt thermocouple readings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual precision chopper-stabilized op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSZ122IYDT | 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 where speed is not critical | Select when system bandwidth <10 kHz and supply current must stay below 100 µA per channel |
| TSV732ICT | Higher noise (55 nV/√Hz vs. 37 nV/√Hz); no AEC-Q100 qualification; 125 °C max operating temp (not rated for automotive) | Targeted at consumer and industrial instrumentation, not safety-critical automotive use | Select for cost-sensitive non-automotive applications requiring similar offset but no extended temp or EMI robustness |
Compared with TSZ182IYDT, TSZ122IYDT trades bandwidth and drive strength for micro-power operation, while TSV732ICT offers comparable precision without automotive qualification or 2.4 GHz EMI immunity - making TSZ182IYDT the only choice for AEC-Q100-compliant, high-speed, high-EMI environments.
Availability
TSZ182IYDT is available at Aetrix Electronics and suitable for automotive battery monitoring, medical ECG front-ends, and industrial pressure transducer interfaces requiring stable component supply across extended temperature and long production lifecycles.
Supply support for TSZ182IYDT 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, with R&D and manufacturing operations across Europe, Asia, and the Americas.
The TSZ18x series belongs to ST's precision analog portfolio, designed specifically for zero-drift, high-accuracy signal conditioning in automotive and medical applications where calibration-free operation and thermal stability are mandatory.
FAQ
What is the maximum capacitive load the TSZ182IYDT can drive without external compensation?
The TSZ182IYDT remains stable with up to 200 pF capacitive load in unity-gain configuration without added series resistance. For loads exceeding 200 pF, an isolation resistor (Riso) of 10–100 Ω is recommended depending on capacitance value - e.g., 47 Ω for 1 nF - to maintain ≥46° phase margin and prevent overshoot.
Does the exposed thermal pad on the DFN8 package require electrical connection?
No - the exposed pad on the TSZ182IYDT DFN8 2x2 package may be connected to VCC− for improved thermal dissipation (reducing Rthja from 57 to ~45 °C/W), or left electrically floating. STMicroelectronics documentation explicitly states it is safe to leave unconnected, though grounding to VCC− enhances thermal performance in high-power-density layouts.
How does the chopper architecture affect signal integrity at higher frequencies?
The 2.4 MHz chopper clock introduces minimal in-band residue due to internal low-pass filtering; measured output ripple is <0.4 µVpp (0.1–10 Hz), and AC performance remains clean up to 3 MHz GBP. At frequencies above 100 kHz, chopper artifacts are fully suppressed - making it suitable for precision amplification of 10–100 kHz sensor signals without post-processing.
Can TSZ182IYDT operate with asymmetric supply rails (e.g., +5 V / −2 V)?
No - the TSZ182IYDT is specified only for single-supply operation with VCC+ and VCC− referenced to a common ground (e.g., 0 V and 5 V). Its absolute maximum ratings define VCC as total supply voltage (≤6 V), and input common-mode range is defined relative to VCC− and VCC+. Asymmetric rails violate the device's internal biasing and are not supported.
TSZ182IYDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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:
- 800µA (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-SO
TSZ182IYDT FAQ
1.How can I place an order for TSZ182IYDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSZ182IYDT 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 TSZ182IYDT reliable?
The price and inventory of TSZ182IYDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSZ182IYDT is usually 5 days.
3.What payment methods are accepted for TSZ182IYDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSZ182IYDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSZ182IYDT?
TSZ182IYDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSZ182IYDT 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 TSZ182IYDT?
For technical support, including TSZ182IYDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSZ182IYDT requirements.
6.How does Aetrix verify that TSZ182IYDT is sourced from the original manufacturer or authorized distributors?
All TSZ182IYDT 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 TSZ182IYDT meets industry standards.
7.What is the process for return or replacement of TSZ182IYDT?
All TSZ182IYDT units undergo pre-shipment inspection (PSI). If there is an issue with TSZ182IYDT, 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 TSZ182IYDT part is unused and in its original packaging.
Return procedure for TSZ182IYDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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