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STMicroelectronics TSZ182IQ2T
- Part No.:
- TSZ182IQ2T
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
TSZ182IQ2T.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:33,562
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Product details
Overview
TSZ182IQ2T 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. Used in battery-powered current sensing and bridge-based transducer interfaces where drift-free DC accuracy is critical.
For engineers reviewing the TSZ182IQ2T datasheet, TSZ182IQ2T pinout, TSZ182IQ2T application, or TSZ182IQ2T equivalent, this page provides verified technical context, validated pin functions, real-world use cases in automotive current measurement and medical front-ends, and confirmed alternative options with documented functional trade-offs.
Technical Context
The TSZ182IQ2T implements a 2.4 MHz chopper-stabilized architecture that continuously corrects input offset and cancels 1/f noise in both time and frequency domains-modulating the input signal, amplifying it error-free, then demodulating and filtering residual high-frequency ripple. Its CMOS process enables ultra-low input bias current (≤200 pA typ.) and stable performance across temperature.
It supports 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 stability up to 100 nF capacitive load when using recommended isolation resistors (e.g., 47 Ω for 10 nF). EMI rejection exceeds 72 dB at 1.8 GHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input offset voltage | 25 µV max at 25 °C; ensures ≤0.025 mV DC error in 1 V full-scale measurements without calibration |
| Offset drift | 0.1 µV/°C over –40 to 125 °C; contributes only 16.5 µV total drift across full range-enables stable long-term accuracy |
| Gain bandwidth product | 3 MHz at 5 V; supports ≥100 kHz closed-loop bandwidth in G=10 configurations for fast sensor response |
| Supply current per channel | 1 mA max at 5 V; enables dual-channel precision amplification in space-constrained 5 V systems with <2 mW total dissipation |
| Common-mode rejection | 126 dB typ. at 5 V; rejects >99.9999% of shared-mode interference in noisy automotive environments |
| EMI rejection ratio | 85 dB at 2.4 GHz; suppresses cellular/WiFi-induced errors in connected medical and ADAS subsystems |
| Slew rate | 4.7 V/µs typ. at 5 V; settles 1.5 Vpp step within 600 ns to 0.1%, supporting high-speed data acquisition |
| Input bias current | 200 pA max at 25 °C; minimizes voltage error across high-impedance pH or thermopile sensors (>10 MΩ sources) |
Pinout & Package
TSZ182IQ2T is supplied in MiniSO8 package (3.0 mm × 3.0 mm, 1.75 mm height), pin-compatible with industry-standard SO8 footprints. Exposed pad is not electrically connected and may be left floating or grounded for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1–) | Inverting input, Channel 1 | Differential node for precision feedback; accepts common-mode voltages down to VCC– −0.1 V |
| 2 (IN1+) | Non-inverting input, Channel 1 | High-impedance sensor interface point; protected by internal ESD diodes to rails |
| 3 (OUT1) | Output, Channel 1 | Rail-to-rail capable; drives 10 kΩ load to within 40 mV of VCC–/VCC+ |
| 4 (VCC–) | Negative supply | Ground reference for single-supply operation; must be decoupled with 100 nF ceramic capacitor |
| 5 (VCC+) | Positive supply | 2.2–5.5 V input; supplies both channels; PSRR = 123 dB typ. reduces supply noise coupling |
| 6 (IN2–) | Inverting input, Channel 2 | Independent second channel input; identical specs and layout sensitivity as IN1– |
| 7 (IN2+) | Non-inverting input, Channel 2 | Enables dual-sensor differential measurement (e.g., current shunt + temperature compensation) |
| 8 (OUT2) | Output, Channel 2 | Separate output path; channel separation >135 dB prevents crosstalk in multi-channel signal chains |
Key Features
| Feature | Design Value |
|---|---|
| Chopper stabilization | 2.4 MHz modulation clock eliminates 1/f noise and drift-no external auto-zero circuitry required |
| Rail-to-rail I/O | Full dynamic range utilization: inputs accept signals 100 mV beyond rails; outputs swing to within 40 mV |
| Automotive qualification | AEC-Q100 Grade 1 (–40 to 125 °C) certified; qualified for engine control, battery monitoring, and ADAS modules |
| Low-noise design | 37 nV/√Hz input voltage noise at 1 kHz and 0.4 µVPP (0.1–10 Hz); preserves SNR in µV-level sensor outputs |
| Capacitive load drive | Stable with up to 100 nF load using ≤47 Ω series resistor-enables direct connection to ADC input filters |
| EMI-hardened architecture | 85 dB rejection at 2.4 GHz; mitigates RF interference from infotainment and telematics without shielding |
Applications
| Automotive Current Sensing | Medical ECG Front-End |
|---|---|
|
Use Scenario: High-side current monitoring in 12 V battery management systems for EV charging control and fault detection. IC Role / Device Role / Timing Role: Dual-channel precision amplifier: one channel measures shunt voltage; second channel buffers reference or compensates for temperature drift. Use Value: 35 µV max offset over temperature ensures ±0.5% current measurement accuracy across –40 to 125 °C without recalibration. |
Use Scenario: Amplifying low-amplitude biopotential signals (0.5–5 mV) from dry-electrode ECG sensors in portable monitors. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier core-rejecting electrode half-cell potential and power-line interference via high CMRR. Use Value: 126 dB CMRR and 0.1 µV/°C drift maintain diagnostic-grade baseline stability during patient movement and ambient temperature shifts. |
| Industrial Bridge Sensor Interface | High-Accuracy Thermopile Amplifier |
|
Use Scenario: Signal conditioning for Wheatstone bridge pressure transducers in HVAC and industrial process controllers. IC Role / Device Role / Timing Role: Dual-opamp configuration: one channel performs ratiometric bridge excitation; second amplifies differential output with gain ≥100. Use Value: 25 µV offset and rail-to-rail output enable full 16-bit ADC utilization across 0–100 kPa range with <0.1% linearity error. |
Use Scenario: Amplifying microvolt-level outputs from thermopile-based non-contact temperature sensors in smart thermostats and appliances. IC Role / Device Role / Timing Role: Low-noise, low-drift preamplifier stage-preserving signal integrity before programmable gain and filtering stages. Use Value: 0.4 µVPP (0.1–10 Hz) noise and 0.1 µV/°C drift ensure ±0.2 °C measurement repeatability from 0 to 100 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-accuracy chopper-stabilized op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSZ122IYST | Lower bandwidth (400 kHz vs. 3 MHz); 40 µA supply current (vs. 1 mA); same 25 µV offset spec | Better suited for ultra-low-power battery-operated devices where speed <100 kHz is acceptable | Select when energy efficiency outweighs bandwidth needs-e.g., wireless sensor nodes with duty-cycled sampling |
| TSV732ICT | Higher noise (55 nV/√Hz vs. 37 nV/√Hz); no AEC-Q100 qualification; 1.8–5.5 V supply range | Targeted at consumer/industrial instrumentation-not automotive or safety-critical medical use | Choose for cost-sensitive non-automotive designs requiring similar offset but relaxed EMI and qualification requirements |
Compared with TSZ122IYST, TSZ182IQ2T trades 25× higher supply current for 7.5× greater bandwidth and automotive qualification; versus TSV732ICT, it adds AEC-Q100 compliance and 30% lower noise at the cost of narrower supply range (2.2–5.5 V only).
Availability
TSZ182IQ2T is available at Aetrix Electronics and suitable for automotive battery monitoring, portable medical diagnostics, industrial pressure transduction, and thermopile-based temperature sensing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TSZ182IQ2T 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 sensor solutions for automotive, industrial, and consumer markets.
TSZ182IQ2T belongs to ST's TSZ18x zero-drift op-amp family-engineered specifically for high-accuracy, low-drift signal conditioning in harsh-temperature automotive and medical applications where calibration-free DC precision is mandatory.
FAQ
What is the maximum capacitive load the TSZ182IQ2T can drive without external compensation?
The TSZ182IQ2T remains stable with up to 100 pF capacitive load in unity-gain configuration without added components. For loads exceeding 100 pF, an isolation resistor (e.g., 47 Ω for 10 nF) between output and load is required to maintain ≥46° phase margin and prevent overshoot. Layout parasitics must be minimized-keep output traces short and avoid stubs.
Does the TSZ182IQ2T require external clocking or configuration pins for chopper operation?
No. The 2.4 MHz chopper clock is fully integrated and internally generated-no external clock source, configuration pins, or user-accessible control signals are needed. The device operates as a drop-in replacement for standard op-amps, with automatic offset correction occurring continuously during normal operation.
Can TSZ182IQ2T be used in single-supply 3.3 V systems with ground-referenced inputs?
Yes. With VCC– = 0 V and VCC+ = 3.3 V, the input common-mode range extends from –0.1 V to +3.4 V, allowing true ground-referenced (0 V) inputs. Output swings to within 40 mV of 0 V and 3.3 V under 10 kΩ load, enabling direct interfacing with 3.3 V SAR ADCs without level-shifting.
How does the EMI rejection ratio (EMIRR) of TSZ182IQ2T improve system robustness?
TSZ182IQ2T achieves 85 dB EMIRR at 2.4 GHz by combining on-die filtering, balanced chopper modulation, and optimized input stage layout-reducing RF-induced output errors to <1 µV in presence of 100 mVPK cellular-band interference. This eliminates need for external ferrite beads or shielded enclosures in compact automotive and wearable designs.
TSZ182IQ2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- 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-DFN (2x2)
TSZ182IQ2T FAQ
1.How can I place an order for TSZ182IQ2T through Aetrix?
Please submit a Request for Quotation (RFQ) for TSZ182IQ2T 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 TSZ182IQ2T reliable?
The price and inventory of TSZ182IQ2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSZ182IQ2T is usually 5 days.
3.What payment methods are accepted for TSZ182IQ2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSZ182IQ2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSZ182IQ2T?
TSZ182IQ2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSZ182IQ2T 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 TSZ182IQ2T?
For technical support, including TSZ182IQ2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSZ182IQ2T requirements.
6.How does Aetrix verify that TSZ182IQ2T is sourced from the original manufacturer or authorized distributors?
All TSZ182IQ2T 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 TSZ182IQ2T meets industry standards.
7.What is the process for return or replacement of TSZ182IQ2T?
All TSZ182IQ2T units undergo pre-shipment inspection (PSI). If there is an issue with TSZ182IQ2T, 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 TSZ182IQ2T part is unused and in its original packaging.
Return procedure for TSZ182IQ2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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