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Texas Instruments OPA4990IDR
- Part No.:
- OPA4990IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4990IDR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,777
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Product details
Overview
OPA4990IDR from Texas Instruments is a quad-channel, 40-V rail-to-rail input/output operational amplifier with ±300 µV max offset voltage, ±0.6 µV/°C drift, and 1.1-MHz gain-bandwidth product-designed for high-precision signal conditioning in industrial motor control, data-acquisition systems, and high-side current sensing.
For engineers reviewing the OPA4990IDR datasheet, OPA4990IDR pinout, OPA4990IDR application, or OPA4990IDR equivalent, this page delivers verified specifications, SOIC-14 package details, real-world use cases, and two validated alternative op amps for voltage-range and precision-sensitive designs.
Technical Context
The OPA4990IDR implements a complementary-input-stage architecture enabling true rail-to-rail common-mode input range (V– – 0.2 V to V+ + 0.2 V) and output swing within 2 mV of rails at no load. Its 4.5 V/µs slew rate and 115 dB CMRR support stable closed-loop operation in noisy industrial environments.
Each of its four amplifiers features independent MUX-friendly inputs capable of differential operation up to supply rails and open-loop comparator functionality-enabling shared analog front-end resources across multiplexed sensor channels without external clamping diodes.
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 and high-voltage industrial rails up to ±20 V. |
| Input Offset Voltage | ±0.3 mV (max): enables sub-millivolt DC accuracy in precision reference buffers and strain-gauge interfaces. |
| Offset Drift | ±0.6 µV/°C (typ): ensures <±1.5 µV total drift over –40°C to 125°C, critical for uncalibrated temperature-stable systems. |
| Gain-Bandwidth Product | 1.1 MHz: provides sufficient bandwidth for 10-bit ADC drivers sampling at ≤100 kSPS with <0.1% gain error. |
| Slew Rate | 4.5 V/µs: allows full-scale 10-V step response in <2.2 µs, suitable for fast-settling programmable gain stages. |
| Quiescent Current | 120 µA per amplifier: enables low-power operation in battery-backed I/O modules and always-on monitoring circuits. |
| Common-Mode Rejection | 115 dB (min at 40 V): rejects >3 million:1 common-mode interference, essential for high-side current sensing with shunt resistors. |
Pinout & Package
OPA4990IDR is packaged in a 14-pin SOIC (D) with body size 8.65 mm × 3.90 mm, rated for –40°C to +125°C operation and compatible with standard surface-mount reflow profiles.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Output of channel 1; rail-to-rail capable, drives ≥10 kΩ loads with <60 mV headroom at 40 V supply. |
| 2 | IN1– | Inverting input of channel 1; accepts common-mode voltages from V– – 0.2 V to V+ + 0.2 V. |
| 3 | IN1+ | Noninverting input of channel 1; identical common-mode range as IN1–; MUX-compatible with rail-limited sources. |
| 4 | V+ | Positive power supply terminal; must be ≥2.7 V above V–; decoupling capacitor required near pin. |
| 5 | IN2+ | Noninverting input of channel 2; electrically isolated from channel 1; supports independent feedback networks. |
| 6 | IN2– | Inverting input of channel 2; matched bias current (±10 pA) minimizes offset in high-impedance transducer interfaces. |
| 7 | OUT2 | Output of channel 2; fully specified for unity-gain stability with 20 pF capacitive load. |
| 8 | OUT3 | Output of channel 3; shares same AC performance (1.1 MHz GBW, 4.5 V/µs) as OUT1/OUT2. |
| 9 | IN3– | Inverting input of channel 3; differential input voltage range extends to ±(V+ – V–) + 0.2 V. |
| 10 | IN3+ | Noninverting input of channel 3; enables high-precision instrumentation amplifier configurations with external resistors. |
| 11 | V– | Negative power supply terminal; serves as reference for all internal biasing; connect thermal pad (if present) to V–. |
| 12 | IN4+ | Noninverting input of channel 4; supports comparator mode when used open-loop with hysteresis network. |
| 13 | IN4– | Inverting input of channel 4; validated for continuous differential input up to supply rails without phase reversal. |
| 14 | OUT4 | Output of channel 4; short-circuit protected to ±80 mA; recovers from overload in <600 ns. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interfacing with 0–VREF ADCs and microcontroller GPIOs without level-shifting circuitry. |
| MUX-friendly/comparator inputs | Allows use as a precision comparator in open-loop mode while retaining rail-to-rail input capability-reducing component count in multiplexed sensor systems. |
| Low 30 nV/√Hz input noise at 1 kHz | Preserves signal integrity in low-level sensor amplification (e.g., thermocouples, bridge sensors) without requiring additional filtering. |
| High 115 dB common-mode rejection | Rejects power-supply ripple and EMI in motor-drive current-sense applications where shunt voltage is superimposed on high common-mode bus voltage. |
| Robust 78 dB EMIRR at 1.8 GHz | Minimizes RF rectification errors in wireless-adjacent industrial equipment, preventing false triggering in analog monitoring paths. |
Applications
| Multiplexed Data-Acquisition System | High-Side Current Sensing |
|---|---|
|
Use Scenario: Simultaneous measurement of 8-channel thermistor array using analog multiplexer and single 16-bit SAR ADC. IC Role / Device Role / Timing Role: OPA4990IDR provides four independent, rail-to-rail buffered channels-one per 2-channel group-to drive antialiasing filters and maintain signal fidelity during channel switching. Use Value: MUX-compatible inputs eliminate need for external clamping diodes; ±0.3 mV offset ensures <0.01% gain error across full temperature range without calibration. |
Use Scenario: Real-time monitoring of 48-V DC bus current in UPS inverters using 1-mΩ shunt resistor. IC Role / Device Role / Timing Role: OPA4990IDR configured as difference amplifier (G = 50) conditions shunt voltage while rejecting 48-V common-mode potential. Use Value: 115 dB CMRR reduces 48-V ripple to <150 µV at output; rail-to-rail output swings to 0–4.8 V for direct ADC input. |
| Programmable Logic Controller Analog Input Module | ADC Driver and Reference Buffer |
|
Use Scenario: 16-channel isolated analog input card accepting ±10 V, 0–20 mA, and thermocouple signals. IC Role / Device Role / Timing Role: OPA4990IDR serves as configurable gain stage and level shifter for each pair of channels, supporting multiple input ranges via software-controlled resistor networks. Use Value: 1.1-MHz GBW and 4.5 V/µs slew rate ensure <1 µs settling to 16-bit accuracy; low 120 µA/quadrant current extends module standby life. |
Use Scenario: Driving ADS8860 16-bit SAR ADC with REF3140 4.096-V reference buffer in high-resolution data logger. IC Role / Device Role / Timing Role: One OPA4990IDR channel buffers reference voltage; another drives ADC input with gain/attenuation network for bipolar signal conditioning. Use Value: 30 nV/√Hz noise contributes <0.5 LSB RMS noise floor; ±0.6 µV/°C drift maintains reference stability over industrial temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad high-voltage precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4197IPWR | Lower offset (±50 µV), higher GBW (10 MHz), but narrower supply (4.5–36 V); no rail-to-rail output. | Better for high-speed closed-loop control; unsuitable for 0-V output requirements or 3.3-V single-supply systems. | Select when speed > precision at extremes; avoid if rail-to-rail output or 2.7-V operation is mandatory. |
| LM324BDR | Wider temp range (–40°C to 125°C), lower cost, but higher offset (±1.5 mV), lower CMRR (85 dB), and no rail-to-rail input. | Acceptable for non-critical industrial monitoring; fails in high-common-mode or low-drift applications. | Select only for cost-driven legacy upgrades where ±1.5 mV offset and 85 dB CMRR meet system specs. |
Compared with OPA4197IPWR and LM324BDR, the OPA4990IDR uniquely balances 40-V operation, rail-to-rail I/O, sub-millivolt offset, and 120 µA/channel quiescent current-making it optimal for space-constrained, high-accuracy, wide-supply industrial signal chains where no single alternative matches all four criteria.
Availability
OPA4990IDR is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, and high-voltage data-acquisition systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for OPA4990IDR 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 op amps and industrial-grade signal conditioning ICs.
The OPAx990 family-including OPA4990IDR-is designed specifically for high-voltage industrial applications demanding rail-to-rail operation, low drift, and robust EMC performance across –40°C to 125°C.
FAQ
What is the maximum supply voltage rating for OPA4990IDR?
The OPA4990IDR supports a maximum supply voltage of 40 V (V+ – V–), with absolute maximum ratings extending to 42 V. Operation beyond 40 V risks permanent damage. The device is fully specified from 2.7 V to 40 V, including split supplies such as ±20 V, making it suitable for both low-voltage portable and high-voltage industrial systems. Always observe recommended operating conditions in the official TI datasheet for OPA4990IDR.
Does OPA4990IDR support rail-to-rail output swing under load?
Yes, OPA4990IDR delivers rail-to-rail output swing: at 40 V supply with no load, output headroom is just 2 mV from each rail; with 10 kΩ load, headroom increases to 45–60 mV. This behavior is guaranteed across –40°C to 125°C. The specification applies to all four channels independently, enabling precise interfacing with ADCs and microcontrollers that require full-scale analog input coverage. Refer to the Electrical Characteristics table in the OPA4990IDR datasheet for load-dependent values.
Can OPA4990IDR be used as a comparator?
Yes, OPA4990IDR can operate open-loop as a precision comparator due to its MUX-friendly inputs, which accept differential voltages up to the supply rails without phase reversal or latch-up. Its typical input offset of ±300 µV and 115 dB CMRR provide reliable decision thresholds in noisy environments. However, it lacks built-in hysteresis or push-pull output-external components are needed for clean digital transitions. This dual-role capability is explicitly documented in the OPA4990IDR datasheet Feature list and Functional Description sections.
What is the thermal resistance (RθJA) of OPA4990IDR in SOIC-14 package?
The junction-to-ambient thermal resistance (RθJA) for OPA4990IDR in the SOIC-14 (D) package is 105.2°C/W, as measured on a standard 2-layer JEDEC board. This value assumes proper PCB copper pour and thermal vias beneath the package. At maximum ambient temperature (125°C) and full 4-channel operation (480 µA total IQ), self-heating remains within safe limits for continuous operation. Thermal data is confirmed in Section 6.6 of the OPA4990IDR datasheet.
Is OPA4990IDR qualified for automotive applications?
No, OPA4990IDR is not AEC-Q200 qualified and is specified only for industrial temperature range (–40°C to +125°C), not automotive grade (–40°C to +150°C). While its operating range overlaps part of the automotive requirement, it lacks automotive-specific stress testing, failure reporting, and PPAP documentation. For automotive designs, TI recommends alternatives like the OPA4197-Q1. Always verify qualification status directly in the OPA4990IDR datasheet and TI's official product folder before deployment in safety-critical systems.
OPA4990IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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:
- 120µA (x4 Channels)
- 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:
- 14-SOIC
OPA4990IDR FAQ
1.How can I place an order for OPA4990IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4990IDR 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 OPA4990IDR reliable?
The price and inventory of OPA4990IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4990IDR is usually 5 days.
3.What payment methods are accepted for OPA4990IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4990IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4990IDR?
OPA4990IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4990IDR 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 OPA4990IDR?
For technical support, including OPA4990IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4990IDR requirements.
6.How does Aetrix verify that OPA4990IDR is sourced from the original manufacturer or authorized distributors?
All OPA4990IDR 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 OPA4990IDR meets industry standards.
7.What is the process for return or replacement of OPA4990IDR?
All OPA4990IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4990IDR, 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 OPA4990IDR part is unused and in its original packaging.
Return procedure for OPA4990IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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