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Texas Instruments OPA202IDGKR
- Part No.:
- OPA202IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA202IDGKR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,647
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Product details
Overview
OPA202IDGKR from Texas Instruments is a precision, low-noise, heavy capacitive-load drive operational amplifier in an 8-pin VSSOP package. It delivers ±200 µV max offset voltage, 1 MHz gain-bandwidth product, 9 nV/√Hz input voltage noise at 1 kHz, ±18 V dual-supply operation, and stable 25 nF capacitive load drive with 5-µs settling time - enabling high-accuracy signal conditioning in data acquisition front-ends.
For engineers reviewing the OPA202IDGKR datasheet, OPA202IDGKR pinout, OPA202IDGKR application, or OPA202IDGKR equivalent, this page provides verified specifications, validated pin functions, confirmed thermal metrics for DGK package, real-world application context for lab instrumentation and medical monitoring, and two technically documented alternative parts with explicit functional and packaging differences.
Technical Context
The OPA202IDGKR uses TI's precision super-beta complementary bipolar process to achieve ultra-low flicker noise (0.2 µVPP, 0.1–10 Hz), sub-1 µV/°C drift, and high open-loop gain (126 dB min). Its input stage features 3000 GΩ input impedance and 0.5 pF input capacitance, enabling high-impedance sensor interfacing without degradation.
It supports rail-to-rail output swing within 750 mV of rails (±18 V, no load), exhibits no phase reversal under overdrive, and maintains stability with capacitive loads up to 25 nF - eliminating need for external isolation resistors in driving ADC input buffers or piezoelectric transducers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | ±200 µV (max) - ensures ≤0.002% error in 10-V full-scale precision measurement systems |
| Gain-Bandwidth Product | 1 MHz - supports stable unity-gain buffer configurations for anti-aliasing filters up to ~100 kHz |
| Voltage Noise Density | 9 nV/√Hz at 1 kHz - enables <1 µV RMS integrated noise in 100-Hz bandwidth sensor amplifiers |
| Quiescent Current | 580 µA (typ) - allows dual-channel precision amplification in battery-powered portable instruments |
| Capacitive Load Drive | 25 nF with 5-µs settling to 0.01% - directly drives SAR ADC inputs (e.g., ADS8860) without RC snubbing |
| CMRR / PSRR | 126 dB (min) - rejects >2 million:1 common-mode or supply ripple in noisy industrial environments |
| Supply Range | ±2.25 V to ±18 V - operates from single 4.5 V to 36 V supplies, compatible with legacy ±15 V and modern ±5 V systems |
Pinout & Package
OPA202IDGKR is housed in an 8-pin VSSOP (DGK) package measuring 3.00 mm × 3.00 mm, optimized for space-constrained PCB layouts while maintaining thermal performance (RθJA = 190.8°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output - drives loads ≥2 kΩ; delivers ±35 mA short-circuit current |
| 2 | −IN | Inverting input - high-impedance node (3000 GΩ); connects to feedback network in inverting configurations |
| 3 | +IN | Noninverting input - referenced to system ground or bias voltage; accepts common-mode range (V−+1.5 V) to (V+−1.5 V) |
| 4 | V− | Negative supply terminal - must be connected to lowest system potential; supports rail-to-rail input common-mode range |
| 5 | NC | No internal connection - electrically isolated; may be left floating or tied to ground for mechanical stability |
| 6 | NC | No internal connection - electrically isolated; no routing required |
| 7 | V+ | Positive supply terminal - must be connected to highest system potential; enables operation up to ±18 V |
| 8 | NC | No internal connection - electrically isolated; no routing required |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 0.1–10 Hz noise | 0.2 µVPP - preserves DC accuracy in thermocouple and strain gauge amplifiers without post-filtering |
| EMI-hardened input stage | EMIRR > 80 dB at 900 MHz - suppresses RF interference in wireless-enabled medical devices per IEC 60601-1-2 |
| Thermal & short-circuit protection | Auto-shutdown at TJ > 125°C and current limiting - prevents latch-up during transient overloads in PSU monitoring |
| Heavy capacitive load stability | Stable with CL = 25 nF, no external compensation - eliminates layout sensitivity when driving long traces or multiplexed ADC inputs |
| Input bias current | ±2 nA (max) - minimizes voltage error across 1-MΩ source impedances in pH electrode interfaces |
Applications
| Data Acquisition Systems | Lab Instrumentation |
|---|---|
Use Scenario: High-resolution 24-bit sigma-delta ADC front-end with programmable gain amplifier (PGA) stage. IC Role / Device Role / Timing Role: Precision buffer and level-shifter between sensor and ADC input, rejecting EMI and driving 10-nF input capacitance. Use Value: Enables 120-dB SNR by contributing only 0.2 µVPP low-frequency noise and maintaining 126 dB CMRR against power supply ripple. |
Use Scenario: Dual-channel differential voltage measurement in portable oscilloscopes and multimeters. IC Role / Device Role / Timing Role: Input-stage amplifier with matched offset and drift across channels for common-mode rejection. Use Value: Delivers ±200 µV max offset and ±1 µV/°C drift, ensuring <0.01% inter-channel gain error over −40°C to +105°C. |
| Multiparameter Patient Monitors | Server/Network PSU Monitoring |
Use Scenario: Biopotential signal conditioning for ECG/EEG electrodes with high-Z sources and strict EMC requirements. IC Role / Device Role / Timing Role: First-stage amplifier with ultra-high input impedance (3000 GΩ) and EMI-hardened inputs. Use Value: Maintains signal fidelity under 900-MHz cellular interference (EMIRR > 80 dB) while adding <0.5 µV RMS noise in 100-Hz bandwidth. |
Use Scenario: Isolated voltage and current sensing in 48 V server power supplies with fast transient response. IC Role / Device Role / Timing Role: High-speed comparator input buffer and shunt amplifier with overload recovery <4 µs. Use Value: Recovers from overvoltage events in <4 µs and drives 10-kΩ ADC inputs with 30-µs 0.1% settling - critical for digital power control loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2182IDGKR | Lower offset (±4 µV max), higher GBW (5 MHz), but higher quiescent current (560 µA vs 580 µA typical) and reduced capacitive load drive (10 nF vs 25 nF) | Better for high-speed precision filtering; unsuitable for direct 25-nF ADC driving without isolation resistor | Select OPA2182IDGKR only when sub-µV offset dominates over capacitive drive capability |
| AD8628ARZ-REEL7 | Zero-drift architecture (0.005 µV/°C), lower noise (0.5 µVPP), but limited supply (±8 V max) and no specified heavy-capacitive-load stability | Preferred for ultra-stable DC sensors below 10 V; not rated for ±18 V or 25-nF loads | Choose AD8628ARZ-REEL7 for battery-powered, low-voltage, zero-drift applications - avoid in high-voltage or high-CL designs |
Compared with OPA202IDGKR, OPA2182IDGKR trades capacitive drive robustness for speed and offset precision, while AD8628ARZ-REEL7 sacrifices supply range and load stability for near-zero drift - making OPA202IDGKR uniquely balanced for wide-supply, high-CL, moderate-speed precision systems.
Availability
OPA202IDGKR is available at Aetrix Electronics and suitable for data acquisition systems, lab instrumentation, and medical monitoring equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for OPA202IDGKR 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 heritage in precision op-amps and industrial-grade signal chain solutions.
The OPAx202 family was designed specifically for high-accuracy, noise-sensitive applications where capacitive load drive, EMI immunity, and dc precision must coexist - targeting data acquisition, medical instrumentation, and industrial power monitoring.
FAQ
What is the maximum capacitive load the OPA202IDGKR can drive without oscillation?
The OPA202IDGKR is characterized for stable operation with up to 25 nF capacitive load, achieving 5-µs settling time to 0.01% with no external compensation. This specification is validated per Figure 28 in the SBOS812H datasheet and applies directly to the DGK package. Exceeding 25 nF requires isolation resistance or feedback network adjustment.
Does the OPA202IDGKR support single-supply operation?
Yes, the OPA202IDGKR supports single-supply operation from 4.5 V to 36 V. Its input common-mode range extends from (V− + 1.5 V) to (V+ − 1.5 V), and output swings within 750 mV of each rail under no load. For true rail-to-rail input/output, external level-shifting or biasing is required.
What is the thermal resistance (RθJA) of the OPA202IDGKR in its VSSOP package?
The OPA202IDGKR in the DGK (VSSOP-8) package has a junction-to-ambient thermal resistance (RθJA) of 190.8°C/W, as specified in Section 6.4 of the SBOS812H datasheet. This value assumes standard JEDEC 2S2P board conditions and informs thermal design for continuous operation at elevated ambient temperatures.
How does the OPA202IDGKR compare to the legacy OP-07 in terms of offset and drift?
The OPA202IDGKR improves upon the OP-07 with lower maximum offset voltage (±200 µV vs ±250 µV) and superior drift performance (±1 µV/°C max vs ±1.5 µV/°C max). It also adds 25-nF capacitive load drive, EMI hardening, and wider supply range (±2.25 V to ±18 V vs ±3 V to ±18 V), making it a functional upgrade without layout changes.
Is the OPA202IDGKR pin-compatible with other members of the OPAx202 family?
No - the OPA202IDGKR (dual-channel) is not pin-compatible with the OPA2202 (dual) or OPA4202 (quad). While all share the same VSSOP-8 footprint, the OPA2202 DGK variant routes both channels' pins to separate terminals (e.g., OUT A on pin 1, OUT B on pin 7), whereas the OPA202IDGKR uses pins 1 and 6 for outputs. Pin mapping must be verified per device-specific configuration tables.
OPA202IDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA202IDGKR FAQ
1.How can I place an order for OPA202IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA202IDGKR 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 OPA202IDGKR reliable?
The price and inventory of OPA202IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA202IDGKR is usually 5 days.
3.What payment methods are accepted for OPA202IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA202IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA202IDGKR?
OPA202IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA202IDGKR 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 OPA202IDGKR?
For technical support, including OPA202IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA202IDGKR requirements.
6.How does Aetrix verify that OPA202IDGKR is sourced from the original manufacturer or authorized distributors?
All OPA202IDGKR 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 OPA202IDGKR meets industry standards.
7.What is the process for return or replacement of OPA202IDGKR?
All OPA202IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA202IDGKR, 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 OPA202IDGKR part is unused and in its original packaging.
Return procedure for OPA202IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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