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Texas Instruments OPA4990IRTER
- Part No.:
- OPA4990IRTER
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
OPA4990IRTER.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:561
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Product details
Overview
OPA4990IRTER from Texas Instruments is a quad-channel, rail-to-rail input/output operational amplifier optimized for high-voltage industrial signal conditioning. It delivers ±300 µV max offset voltage, 1.1-MHz gain-bandwidth, 4.5 V/µs slew rate, and operates from 2.7 V to 40 V supply. Used in multiplexed data-acquisition systems for precision sensor buffering and ADC driving.
For engineers reviewing the OPA4990IRTER datasheet, OPA4990IRTER pinout, OPA4990IRTER application, or OPA4990IRTER equivalent, this page provides verified electrical specs, SOIC-14 package details, real-world use cases in high-side current sensing and reference buffering, and two validated alternative op amps with documented functional trade-offs.
Technical Context
The OPA4990IRTER 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 the supply rails. Its architecture supports open-loop comparator use without latch-up due to MUX-friendly inputs.
It features internal EMI hardening (78 dB EMIRR at 1.8 GHz), ±10 pA bias current, and robust short-circuit protection delivering ±80 mA output current. The device is specified across –40°C to +125°C and supports shutdown via dedicated SHDN12/SHDN34 pins in the WQFN variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 40 V - supports single-supply industrial sensors and dual-supply precision analog front-ends |
| Input Offset Voltage | ±0.3 mV (max) - enables sub-12-bit error budget in 16-bit data acquisition systems |
| Gain-Bandwidth Product | 1.1 MHz - sufficient for anti-aliasing filtering and moderate-speed sensor signal conditioning |
| Slew Rate | 4.5 V/µs - ensures faithful reproduction of fast transients in motor control feedback loops |
| Input Bias Current | ±10 pA - preserves accuracy in high-impedance bridge and thermocouple sensor interfaces |
| CMRR | 115 dB (typ) - rejects power supply noise in noisy industrial environments |
| Quiescent Current | 120 µA per amplifier - allows four-channel operation under 500 µA total, ideal for low-power PLC modules |
Pinout & Package
OPA4990IRTER is packaged in a 14-pin SOIC (D) body measuring 8.65 mm × 3.90 mm, with standard lead pitch and creepage clearance suitable for industrial PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | Output (OUT1–OUT4) | Amplified buffered outputs; each drives ≥10 kΩ load to within 60 mV of rails at VS = 40 V |
| 2, 6, 9, 13 | Inverting Input (IN1––IN4–) | Differential input nodes; accept common-mode voltages from V– – 0.2 V to V+ + 0.2 V |
| 3, 5, 10, 12 | Noninverting Input (IN1+–IN4+) | Rail-to-rail input terminals; enable direct connection to unbuffered sensor outputs or reference dividers |
| 4 | V+ | Positive supply rail; must be ≥2.7 V above V– and ≤40 V total supply range |
| 11 | V– | Negative supply rail; serves as return path for all four amplifiers and thermal pad in WQFN variants |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in single-supply systems (e.g., 3.3 V or 24 V PLC I/O modules) |
| MUX-friendly/comparator inputs | Allows direct use in open-loop configurations for zero-crossing detection or window comparators without external clamping |
| Low offset drift (±0.6 µV/°C) | Reduces temperature-induced calibration drift in field-deployed instrumentation operating across –40°C to +125°C |
| High EMIRR (78 dB @ 1.8 GHz) | Suppresses RF interference from switching power supplies and wireless comms in industrial gateways |
| Robust short-circuit current (±80 mA) | Withstands momentary overloads during motor drive current-sense fault events without latch-up or damage |
Applications
| Multiplexed Data-Acquisition System | High-Side Current Sensing |
|---|---|
Use Scenario: 16-channel industrial DAQ system using analog multiplexer (e.g., TMUX1308) feeding into OPA4990IRTER for signal conditioning prior to SAR ADC. IC Role / Device Role / Timing Role: Quad op amp buffers and level-shifts high-impedance sensor signals while rejecting crosstalk between channels. Use Value: Rail-to-rail input eliminates need for external level-shifting; low bias current prevents multiplexer channel leakage errors. |
Use Scenario: Real-time monitoring of phase currents in 3-phase inverter drives using shunt resistors placed on high-side (24–40 V bus). IC Role / Device Role / Timing Role: Precision difference amplifier configured for high common-mode rejection at up to 40 V common-mode voltage. Use Value: 115 dB CMRR and rail-to-rail input allow accurate measurement of mV-level shunt drops without isolation amplifiers. |
| ADC Driver & Reference Buffer | Programmable Logic Controller Analog I/O |
Use Scenario: Driving ADS8860 16-bit SAR ADC with OPA4990IRTER as buffer for external 4.096 V reference and as driver for ADC input. IC Role / Device Role / Timing Role: Low-noise (30 nV/√Hz), low-distortion (0.00162% THD+N) amplifier ensuring SNR preservation in precision conversion. Use Value: 1.1-MHz GBW and 4.5 V/µs slew rate settle 16-bit codes within 4 µs, matching ADS8860's 1 MSPS throughput. |
Use Scenario: Analog input module in Allen-Bradley or Siemens PLC handling 4–20 mA loop receivers and thermocouple linearization. IC Role / Device Role / Timing Role: Quad amplifier performs simultaneous signal conditioning: current-to-voltage conversion, cold-junction compensation, filtering, and output buffering. Use Value: Four independent channels in one SOIC-14 reduce BOM count and board space vs discrete solutions; –40°C to +125°C rating matches industrial ambient requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4197IPWR | Lower offset (±25 µV), higher GBW (10 MHz), but higher quiescent current (160 µA/ch) and narrower supply (4.5–36 V) | Better for high-speed closed-loop control; less suitable for battery-powered or ultra-low-power DAQ | Choose when speed and DC precision outweigh power and supply flexibility |
| LM324DR | Higher offset (±3 mV), lower GBW (1.2 MHz), no rail-to-rail input, but wider temp range (–40°C to +125°C) and lower cost | Acceptable for non-precision industrial controls where 12-bit accuracy suffices | Choose for cost-sensitive legacy designs where rail-to-rail performance is not required |
Compared with OPA4990IRTER, OPA4197IPWR trades power efficiency and 40-V headroom for higher speed and lower offset, while LM324DR sacrifices precision and input range for cost and legacy compatibility-neither is pin-compatible, requiring layout revision.
Availability
OPA4990IRTER is available at Aetrix Electronics and suitable for multiplexed data-acquisition systems, high-side current sensing, ADC driver and reference buffer amplifier, and programmable logic controller analog I/O requiring stable component supply across extended temperature and voltage ranges.
Supply support for OPA4990IRTER 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 company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, data converters, and power management ICs.
The OPAx990 product line was designed for high-voltage industrial signal conditioning-targeting applications demanding rail-to-rail operation, low drift, and robustness in harsh environments such as motor drives, PLCs, and test equipment.
FAQ
What is the maximum supply voltage for OPA4990IRTER?
The absolute maximum supply voltage for OPA4990IRTER is 42 V, but the recommended operating range is 2.7 V to 40 V. Operation at 40 V enables full utilization of its high-voltage capability in industrial power-stage monitoring and UPS systems. Exceeding 40 V risks violating recommended conditions and may impact long-term reliability.
Does OPA4990IRTER support rail-to-rail input and output simultaneously?
Yes, OPA4990IRTER supports rail-to-rail input (common-mode range extends from V– – 0.2 V to V+ + 0.2 V) and rail-to-rail output (swing within 60 mV of rails at 40 V supply with 10 kΩ load). This dual capability allows direct interfacing with unbuffered sensors and microcontroller ADCs without level-shifting circuitry.
Is OPA4990IRTER pin-compatible with other OPAx990 family members?
No, OPA4990IRTER in SOIC-14 is not pin-compatible with OPA990 (SOT-23-5/6) or OPA2990 (SOIC-8/TSSOP-8). Pin counts, functions, and spacing differ across the family. For example, OPA4990IRTER has dedicated IN+/IN– pairs per channel and shared V+/V– rails, whereas dual variants use different pinouts and lack channel-specific shutdown pins.
What is the typical input bias current of OPA4990IRTER?
The typical input bias current of OPA4990IRTER is ±10 pA at 25°C, with a maximum of ±20 pA over –40°C to +125°C. This ultra-low value minimizes voltage error in high-impedance sensor interfaces such as thermocouples, RTDs, and piezoelectric transducers, preserving measurement fidelity without external guarding.
Can OPA4990IRTER be used as a comparator?
Yes, OPA4990IRTER can be used open-loop as a comparator due to its MUX-friendly inputs-its inputs tolerate differential voltages up to the supply rails and operate reliably without phase reversal or latch-up. However, it lacks built-in hysteresis or push-pull output; external hysteresis and output conditioning are required for robust comparator operation.
OPA4990IRTER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- 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 (x2 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:
- 16-WQFN (3x3)
OPA4990IRTER FAQ
1.How can I place an order for OPA4990IRTER through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4990IRTER 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 OPA4990IRTER reliable?
The price and inventory of OPA4990IRTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4990IRTER is usually 5 days.
3.What payment methods are accepted for OPA4990IRTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4990IRTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4990IRTER?
OPA4990IRTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4990IRTER 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 OPA4990IRTER?
For technical support, including OPA4990IRTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4990IRTER requirements.
6.How does Aetrix verify that OPA4990IRTER is sourced from the original manufacturer or authorized distributors?
All OPA4990IRTER 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 OPA4990IRTER meets industry standards.
7.What is the process for return or replacement of OPA4990IRTER?
All OPA4990IRTER units undergo pre-shipment inspection (PSI). If there is an issue with OPA4990IRTER, 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 OPA4990IRTER part is unused and in its original packaging.
Return procedure for OPA4990IRTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4990IRTER Tags
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