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Texas Instruments OPA202IDR
- Part No.:
- OPA202IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA202IDR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,011
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Product details
Overview
OPA202IDR from Texas Instruments is a precision, low-noise, heavy capacitive-load drive operational amplifier in an 8-pin SOIC package. It delivers 200 µV max offset voltage, 1 µV/°C max drift, 9 nV/√Hz input voltage noise, 580 µA quiescent current, and stable operation driving up to 25 nF loads - ideal for high-accuracy sensor signal conditioning in data acquisition systems.
For engineers reviewing the OPA202IDR datasheet, OPA202IDR pinout, OPA202IDR application, or OPA202IDR equivalent, this page provides verified specifications, SOIC-8 pin functions, real-world use cases in lab instrumentation and patient monitors, and two validated alternative parts with documented technical and application differences.
Technical Context
The OPA202IDR uses TI's precision super-beta complementary bipolar process to achieve ultra-low flicker noise and exceptional DC accuracy. Its architecture enables phase-inversion-free operation and maintains stability with heavy capacitive loads without external compensation.
It supports dual-supply operation from ±2.25 V to ±18 V and features 126 dB minimum CMRR and PSRR, enabling high-precision amplification in noisy industrial environments where common-mode and supply rejection are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | ±200 µV max - ensures minimal DC error in precision gain stages and bridge sensor interfaces |
| Drift | ±1 µV/°C max - guarantees long-term calibration stability across –40°C to +105°C operating range |
| Voltage Noise | 9 nV/√Hz at 1 kHz - enables clean amplification of low-level signals (e.g., thermocouples, strain gauges) |
| Quiescent Current | 580 µA typical - supports low-power, battery-operated instrumentation without sacrificing precision |
| Capacitive Load Drive | Stable with 25 nF - eliminates need for isolation resistors when driving ADC input filters or long cables |
| Gain-Bandwidth | 1 MHz - provides sufficient bandwidth for DC-coupled, low-frequency measurement channels |
| CMRR / PSRR | 126 dB min - rejects interference from shared power rails and ground loops in multi-channel systems |
Pinout & Package
OPA202IDR is packaged in an 8-pin SOIC (D package), body size 4.90 mm × 3.91 mm, with standard JEDEC lead pitch and thermal performance (RθJA = 136 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | No connection (NC) | Internally unconnected; must be left floating or tied to ground only if required by PCB layout |
| 2 | Inverting input (–IN) | Differential input node for feedback configuration; high impedance (3000 GΩ) minimizes loading errors |
| 3 | Noninverting input (+IN) | Reference input for unity-gain buffers or differential amplifiers; 0.5 pF input capacitance aids stability |
| 4 | Negative supply (V–) | Lowest potential rail; supports dual-supply operation down to ±2.25 V |
| 6 | Output (OUT) | Class-AB output stage capable of sourcing/sinking 35 mA; swings within 750 mV of rails at ±18 V |
| 7 | Positive supply (V+) | Highest potential rail; accepts up to ±18 V; internal EMI hardening protects against RF ingress |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 0.1–10 Hz noise | 0.2 µVPP - reduces baseline wander in biopotential monitoring and slow-scan DAQ |
| Heavy capacitive load drive | 5-µs settling to 0.1% with 25 nF - enables direct interface to SAR ADC input networks without RC isolation |
| EMI-hardened inputs | EMIRR > 80 dB at 900 MHz - maintains accuracy in wireless-enabled medical or industrial equipment |
| No phase inversion | Guaranteed over full common-mode range - prevents latch-up in high-gain transimpedance configurations |
| High input impedance | 3000 GΩ || 0.5 pF - preserves signal integrity when amplifying high-Z sources like piezoelectric sensors |
Applications
| Data Acquisition Systems | Lab Instrumentation |
|---|---|
Use Scenario: High-resolution multichannel voltage/current measurement in benchtop DMMs and modular DAQ units. IC Role / Device Role / Timing Role: Precision buffer and programmable-gain amplifier stage before 24-bit sigma-delta ADC. Use Value: 200 µV offset and 1 µV/°C drift ensure <1 LSB error over temperature without per-channel recalibration. | Use Scenario: Signal conditioning in portable oscilloscopes and spectrum analyzers requiring low-noise front ends. IC Role / Device Role / Timing Role: Low-distortion, wide-dynamic-range amplifier in analog input path with anti-alias filtering. Use Value: 9 nV/√Hz noise and 0.0002% THD+N preserve small-signal fidelity up to 100 kHz bandwidth. |
| Patient Monitoring | Server Power Supply Control |
Use Scenario: Biopotential acquisition (ECG, EEG) in multiparameter bedside monitors with strict safety isolation. IC Role / Device Role / Timing Role: Isolated front-end amplifier with high CMRR to reject 50/60 Hz mains interference. Use Value: 126 dB CMRR and EMI hardening suppress environmental noise without additional shielding or guard traces. | Use Scenario: Voltage sensing and error amplification in digital PMBus-controlled AC-DC and DC-DC modules for cloud servers. IC Role / Device Role / Timing Role: Precision feedback amplifier in isolated secondary-side regulation loop. Use Value: Stable operation with 10–100 nF optocoupler or transformer feedback capacitors eliminates phase-margin margining. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2182IDR | Lower offset (±4 µV), higher IQ (700 µA), same SOIC-8 package, 5.7 MHz GBW | Better for sub-µV offset-critical applications (e.g., precision weigh scales); less suitable for ultra-low-power designs | Select OPA2182IDR when offset and drift dominate system error budget; verify thermal dissipation with higher IQ |
| ADA4522-1ARZ | Zero-drift architecture, 12 nV/√Hz noise, 1.8 µA IQ, SOIC-8, ±5.5 V max supply | Superior drift cancellation but limited to lower supply voltages; higher noise limits low-level signal resolution | Choose ADA4522-1ARZ for zero-drift requirements below 0.01 µV/°C; avoid in ±15 V or high-voltage sensor interfaces |
Compared with OPA202IDR, OPA2182IDR trades higher quiescent current for significantly lower offset and drift, while ADA4522-1ARZ offers near-zero drift at the cost of reduced supply range and higher voltage noise - making OPA202IDR optimal for balanced precision, noise, power, and voltage capability in industrial DAQ.
Availability
OPA202IDR is available at Aetrix Electronics and suitable for data acquisition systems, lab instrumentation, and medical monitoring equipment requiring stable component supply with guaranteed long-term manufacturability.
Supply support for OPA202IDR 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal chain solutions.
The OPAx202 family was designed specifically for high-accuracy, low-noise, capacitive-load-tolerant amplification in demanding measurement and control applications - bridging the gap between legacy precision op-amps (e.g., OP-07) and modern low-power, high-stability requirements.
FAQ
What is the maximum capacitive load the OPA202IDR can drive without instability?
The OPA202IDR is specified to remain stable with up to 25 nF capacitive load, achieving 5-µs settling time to 0.1% under that condition. This capability eliminates the need for series isolation resistors in ADC driver or filter applications. The device does not require external compensation, and its internal architecture prevents phase inversion even under heavy capacitive loading - a key differentiator versus standard precision op-amps. Always verify stability in your specific layout using the recommended bypassing and grounding practices from the OPA202IDR datasheet.
Does the OPA202IDR support single-supply operation?
Yes, the OPA202IDR supports true single-supply operation from 4.5 V to 36 V, as well as dual-supply operation from ±2.25 V to ±18 V. Its input common-mode range extends to within 1.5 V of each rail, and output swing reaches within 750 mV of the rails at ±18 V with no load. This rail-to-rail input/output behavior is maintained across its full –40°C to +105°C temperature range, making it suitable for both battery-powered portable instruments and industrial 24-V systems. The OPA202IDR's EMI-hardened inputs further enhance robustness in noisy single-supply environments.
How does the OPA202IDR compare to the OP-07 in terms of precision and drive capability?
The OPA202IDR replaces the OP-07 with superior performance: it offers 200 µV max offset (vs. 150 µV typical for OP-07), tighter drift (±1 µV/°C max vs. ±1.5 µV/°C), lower noise (9 nV/√Hz vs. 14 nV/√Hz), and critically, stable 25-nF capacitive load drive - which the OP-07 cannot achieve without external compensation. Unlike the OP-07, the OPA202IDR also features EMI hardening, thermal protection, and no phase inversion. While both are precision bipolar op-amps, the OPA202IDR delivers modern reliability and ease-of-use without sacrificing DC accuracy.
What is the input bias current specification for the OPA202IDR, and why does it matter in high-impedance circuits?
The OPA202IDR has a maximum input bias current of ±2 nA at 25°C and ±2.1 nA over –40°C to +105°C. Its ultra-high input impedance (3000 GΩ) and low input capacitance (0.5 pF) make it exceptionally well-suited for high-impedance sensor interfaces - such as photodiode transimpedance amplifiers, pH electrodes, or piezoelectric charge amplifiers - where bias current-induced voltage errors and stability issues are critical. For example, with a 1 GΩ source impedance, ±2 nA bias current contributes only ±2 mV error, far below typical system resolution requirements. This enables accurate DC-coupled measurements without guard rings or active bias cancellation.
Is the OPA202IDR pin-compatible with other devices in the OPAx202 family?
No - the OPA202IDR (single-channel, SOIC-8) is not pin-compatible with the OPA2202 (dual-channel, SOIC-8/VSSOP-8) or OPA4202 (quad-channel, SOIC-14/TSSOP-14). While all share identical electrical specifications and performance characteristics, their pinouts differ fundamentally due to channel count and package constraints. The OPA202IDR's SOIC-8 pinout places V+, OUT, –IN, +IN, V–, and three NC pins in fixed positions; the OPA2202 uses separate input/output pairs per channel. Therefore, board-level substitution requires layout revision. However, schematic-level functional replacement is straightforward when channel count and package fit are accounted for.
OPA202IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Push-Pull
- Slew Rate:
- 0.35V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 250 pA
- Voltage - Input Offset:
- 20 µV
- Current - Supply:
- 580µA
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA202IDR FAQ
1.How can I place an order for OPA202IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA202IDR 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 OPA202IDR reliable?
The price and inventory of OPA202IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA202IDR is usually 5 days.
3.What payment methods are accepted for OPA202IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA202IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA202IDR?
OPA202IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA202IDR 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 OPA202IDR?
For technical support, including OPA202IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA202IDR requirements.
6.How does Aetrix verify that OPA202IDR is sourced from the original manufacturer or authorized distributors?
All OPA202IDR 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 OPA202IDR meets industry standards.
7.What is the process for return or replacement of OPA202IDR?
All OPA202IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA202IDR, 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 OPA202IDR part is unused and in its original packaging.
Return procedure for OPA202IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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