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Texas Instruments OPA990IDCKR
- Part No.:
- OPA990IDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
OPA990IDCKR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:8,496
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Product details
Overview
OPA990IDCKR from Texas Instruments is a single-channel, 40-V rail-to-rail input/output operational amplifier with ±300 µV max offset voltage, 1.1-MHz gain-bandwidth product, and 120 µA quiescent current per amplifier-designed for precision signal conditioning in high-voltage industrial sensor interfaces and multiplexed data-acquisition systems.
For engineers reviewing the OPA990IDCKR datasheet, OPA990IDCKR pinout, OPA990IDCKR application, or OPA990IDCKR equivalent, this page delivers verified specifications, SC70-5 package details, real-world use cases in high-side current sensing and ADC driver roles, and validated alternative options for supply-chain continuity and design flexibility.
Technical Context
The OPA990IDCKR implements a complementary input stage enabling rail-to-rail common-mode input range (V– – 0.2 V to V+ + 0.2 V) and differential input operation up to supply rails. Its architecture supports open-loop comparator use without latch-up due to MUX-friendly inputs and internal protection.
It features a 4.5 V/µs slew rate, 115 dB CMRR at 40 V supply, and robust EMIRR of 78 dB at 1.8 GHz-enabling stable performance in noisy motor drive control and high-voltage power delivery monitoring where EMI immunity and DC precision are co-critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 40 V (±1.35 V to ±20 V): supports single-supply 3.3 V/5 V systems and high-voltage industrial rails up to ±20 V. |
| Input Offset Voltage | ±0.3 mV (max): enables sub-1 LSB error in 16-bit ADC front-ends with full-scale ranges ≥3 V. |
| Gain-Bandwidth Product | 1.1 MHz: sufficient for anti-aliasing filtering and closed-loop gain ≥10 at ≤100 kHz signals. |
| Slew Rate | 4.5 V/µs: ensures <5 µs settling to 0.1% for 10-V step inputs-critical for fast multiplexer channel switching. |
| Quiescent Current | 120 µA per amplifier: allows battery-backed or energy-constrained designs with minimal thermal load. |
| Input Bias Current | ±10 pA: preserves accuracy in high-impedance sensor interfaces (e.g., thermocouples, bridge sensors). |
| EMIRR | 78 dB at 1.8 GHz: suppresses RF rectification in motor drive feedback paths exposed to PWM noise. |
Pinout & Package
OPA990IDCKR is packaged in a 5-pin SC70 (DCK) case measuring 2.00 mm × 1.25 mm, optimized for space-constrained PCB layouts while maintaining thermal performance (RθJA = 174.5 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN+ | Noninverting input: accepts signals from V– – 0.2 V to V+ + 0.2 V; compatible with rail-to-rail sensor outputs. |
| 2 | V– | Negative supply terminal: reference for all internal biasing; must be connected to lowest system potential. |
| 3 | IN– | Inverting input: supports differential input voltages up to full supply rail swing; usable as comparator input. |
| 4 | OUT | Amplifier output: rail-to-rail swing (within 2 mV of rails, no load); drives 10-kΩ loads with ≤60 mV headroom. |
| 5 | V+ | Positive supply terminal: highest system voltage; supplies internal circuitry and sets output compliance range. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interfacing with low-voltage logic and high-voltage sensors without level-shifting circuitry. |
| MUX-friendly/comparator inputs | Allows use in open-loop mode for zero-crossing detection or as buffer between analog multiplexers and ADCs. |
| Low offset drift (±0.6 µV/°C) | Reduces temperature-induced gain error in PLC analog I/O modules operating across –40°C to 125°C. |
| High short-circuit current (±80 mA) | Provides fault tolerance during transient overloads in motor current-sensing shunt amplifier applications. |
| Robust EMIRR (78 dB @ 1.8 GHz) | Maintains DC accuracy in proximity to 1.8-GHz RF sources such as Wi-Fi/BT coexistence in industrial gateways. |
Applications
| High-Side Current Sensing | ADC Driver for Multiplexed Inputs |
|---|---|
|
Use Scenario: Monitoring phase current in 24–48 V motor drives using a high-side shunt resistor. IC Role / Device Role / Timing Role: Precision difference amplifier with rail-to-rail input to measure mV-level drops across shunt while rejecting common-mode bus voltage up to 48 V. Use Value: ±300 µV offset ensures <0.5% measurement error at 100-mA full-scale current with 10-mΩ shunt; 115 dB CMRR rejects PWM switching noise. |
Use Scenario: Buffering and conditioning analog signals from a 16-channel analog multiplexer before feeding a 16-bit SAR ADC. IC Role / Device Role / Timing Role: Low-noise (30 nV/√Hz), fast-settling (≤4 µs to 0.1%) driver that maintains signal integrity during channel switching transients. Use Value: 4.5 V/µs slew rate and 1.1-MHz GBW prevent settling errors at 100-kSPS sampling rates; MUX-friendly inputs tolerate differential swings beyond rails. |
| Reference Buffer for High-Voltage DACs | Programmable Logic Controller Analog Output |
|
Use Scenario: Stabilizing and buffering a 4.096-V precision reference for a 16-bit DAC in a 40-V industrial power supply controller. IC Role / Device Role / Timing Role: Unity-gain stable buffer with rail-to-rail output to drive DAC reference input capacitance without droop or oscillation. Use Value: 120 µA quiescent current minimizes self-heating drift; ±10 pA bias current prevents reference loading error in high-Z DAC reference nodes. |
Use Scenario: Generating isolated 0–10 V or 4–20 mA analog outputs in modular PLC backplanes with wide ambient temperature range. IC Role / Device Role / Timing Role: Precision output amplifier with ±300 µV offset and low drift to meet Class A (0.1%) accuracy requirements over –40°C to 125°C. Use Value: ±0.6 µV/°C drift contributes <0.01% error over 100°C span; 40-V supply capability supports direct connection to 24-V field power rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA192IDBVR | Lower offset (±5 µV typ), higher GBW (10 MHz), but higher IQ (1 mA); no shutdown function. | Better for high-speed precision instrumentation; less suitable for ultra-low-power or shutdown-required systems. | Choose OPA192IDBVR when bandwidth >5 MHz and offset <50 µV are mandatory; retain OPA990IDCKR for 120 µA IQ and 40-V operation. |
| LM358BDR | Lower cost, wider temp range (–40°C to 125°C), but higher offset (±2 mV), lower CMRR (100 dB), and 36-V max supply. | Acceptable for non-critical industrial controls where 0.5% accuracy suffices and supply stays ≤36 V. | Select LM358BDR only for cost-sensitive, non-precision applications; OPA990IDCKR remains preferred for 40-V rails and sub-0.1% accuracy. |
Compared with OPA192IDBVR and LM358BDR, the OPA990IDCKR uniquely balances 40-V operation, 120 µA quiescent current, and ±300 µV offset-making it optimal for space-constrained, high-voltage, low-power precision signal chains where alternatives trade off voltage range, power, or accuracy.
Availability
OPA990IDCKR is available at Aetrix Electronics and suitable for high-voltage motor control, industrial PLC analog I/O, and multiplexed data-acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for OPA990IDCKR 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 amplifiers and high-reliability industrial ICs.
The OPAx990 family was designed specifically for high-voltage industrial signal conditioning-emphasizing rail-to-rail operation, low drift, EMI robustness, and wide supply range to replace legacy op amps in motor drives, power delivery, and programmable automation controllers.
FAQ
What is the maximum supply voltage for OPA990IDCKR?
The OPA990IDCKR supports a total supply voltage range of 2.7 V to 40 V (±1.35 V to ±20 V). Absolute maximum rating is 42 V across V+ and V– terminals. Operation above 40 V risks permanent damage and violates recommended conditions-designs targeting 40-V rails must ensure transient spikes remain below 42 V.
Does OPA990IDCKR include a shutdown pin?
No, the OPA990IDCKR (SC70-5 package) does not have a shutdown pin. Shutdown functionality is only available on the OPA990S variants (e.g., OPA990SIDCKR, 6-pin SC70), which add a dedicated SHDN pin. The standard OPA990IDCKR operates continuously when powered within its specified voltage and temperature range.
Can OPA990IDCKR be used as a comparator?
Yes, the OPA990IDCKR can operate open-loop as a comparator due to its MUX-friendly inputs-allowing differential input voltages up to the supply rails without phase reversal or latch-up. However, it lacks built-in hysteresis or push-pull output; external hysteresis and output conditioning are required for reliable digital edge detection.
What is the thermal resistance (RθJA) of OPA990IDCKR in SC70 package?
The junction-to-ambient thermal resistance (RθJA) for OPA990IDCKR in the SC70 (DCK) package is 174.5 °C/W, measured under JEDEC JESD51-7 standard conditions. This value assumes a 2-layer board with 1-in² copper area; actual thermal performance improves with added copper pour or thermal vias beneath the pad.
Is OPA990IDCKR suitable for driving capacitive loads?
Yes, the OPA990IDCKR is unity-gain stable and capable of driving moderate capacitive loads. Typical characteristics show <10% overshoot with 100-pF loads and stable response up to 200 pF when properly compensated. For loads >200 pF, a series resistor (10–50 Ω) between amplifier output and capacitor is recommended to maintain phase margin.
OPA990IDCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 4.5V/µs
- Gain Bandwidth Product:
- 1.1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 130µA
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 40 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
OPA990IDCKR FAQ
1.How can I place an order for OPA990IDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA990IDCKR 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 OPA990IDCKR reliable?
The price and inventory of OPA990IDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA990IDCKR is usually 5 days.
3.What payment methods are accepted for OPA990IDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA990IDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA990IDCKR?
OPA990IDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA990IDCKR 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 OPA990IDCKR?
For technical support, including OPA990IDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA990IDCKR requirements.
6.How does Aetrix verify that OPA990IDCKR is sourced from the original manufacturer or authorized distributors?
All OPA990IDCKR 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 OPA990IDCKR meets industry standards.
7.What is the process for return or replacement of OPA990IDCKR?
All OPA990IDCKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA990IDCKR, 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 OPA990IDCKR part is unused and in its original packaging.
Return procedure for OPA990IDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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