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Texas Instruments OPA2890IDR
- Part No.:
- OPA2890IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2890IDR.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,036
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Product details
Overview
OPA2890IDR from Texas Instruments is a dual, unity-gain stable, voltage-feedback operational amplifier optimized for wideband, low-power, single-supply operation. It delivers 90MHz bandwidth at G = +2V/V, 400V/μs slew rate, ±4.1V output swing on ±5V supplies, and 1.1mA per channel quiescent current - enabling high-fidelity RGB line driving and ADC input buffering in portable instrumentation and xDSL receivers.
For engineers reviewing the OPA2890IDR datasheet, OPA2890IDR pinout, OPA2890IDR application, or OPA2890IDR equivalent, key selection criteria include its disable-capable MSOP-10 variant (not applicable to SO-8 OPA2890IDR), 210MHz small-signal bandwidth on +5V supply, differential gain error of 0.06%, and guaranteed operation from –40°C to +85°C in the SO-8 package.
Technical Context
The OPA2890IDR employs a novel high-slew-rate input stage that dynamically steers current into the compensation capacitor, enabling 400V/μs slew rate while maintaining only 1.1mA/ch quiescent current. Unlike conventional voltage-feedback op amps with fixed-bias transconductance stages, this architecture avoids slew-rate limiting by scaling drive current with input error voltage.
It achieves unity-gain stability without external compensation and supports flexible supply configurations: ±1.5V to ±6V dual supplies or +3V to +12V single supply. Its input common-mode range extends to within 1.1V of either rail on +5V supply, and output swings from +0.9V to +4.1V (no load), supporting DC-coupled interfacing with SAR ADCs like ADS8472.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G = +2V/V) | 90MHz on +5V supply - enables full HD video signal amplification up to 75MHz pixel clock with margin. |
| Slew rate | 350V/μs min on +5V supply - ensures faithful reproduction of fast transient signals without slewing distortion. |
| Output voltage swing | +0.9V to +4.1V (no load) on +5V - provides 3.2VPP linear range compatible with 16-bit SAR ADC input requirements. |
| Quiescent current | 2.1mA max (both channels) on +5V - supports battery-powered portable instruments with tight power budgets. |
| Input offset voltage | ±7.1mV max over temperature - maintains DC accuracy in precision sensor signal conditioning paths. |
| Harmonic distortion (2nd) | –70dBc min at 1MHz, 2VPP, RL = 200Ω - meets broadcast-grade video differential gain/phase specs (0.06%/0.04°). |
| Disable function | Not available on SO-8 OPA2890IDR - only present in MSOP-10 OPA2890IDGST/IDGSR variants. |
Pinout & Package
OPA2890IDR is packaged in an 8-pin SOIC (SO-8) surface-mount package with standard dual-op-amp pinout and no disable functionality. Thermal resistance θJA is 100°C/W, supporting operation up to +85°C ambient with appropriate PCB copper area.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input B | High-impedance node for feedback network connection in channel B; matched to non-inverting input for precision gain setting. |
| 2 | Non-inverting input B | DC-coupled input for channel B; supports common-mode range from +1.4V to +3.6V on +5V supply. |
| 3 | Output B | Low-output-impedance (0.04Ω) driver capable of ±35mA sourcing/sinking into 100Ω loads. |
| 4 | –VS | Negative supply pin; must be connected to ground or negative rail; not internally tied to substrate. |
| 5 | –VS | Shared negative supply pin for both amplifiers; requires local 0.1μF decoupling to ground. |
| 6 | Output A | Independent output for channel A; electrically isolated from Output B with –68dB crosstalk at 5MHz. |
| 7 | Non-inverting input A | Primary signal input for channel A; identical electrical characteristics to Pin 2. |
| 8 | +VS | Positive supply pin; accepts +3V to +12V; requires local 0.1μF decoupling to ground and 0.1μF inter-rail capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable | No external compensation required - simplifies layout and reduces BOM count in high-speed filter and driver circuits. |
| Wideband +5V operation | 90MHz bandwidth at G = +2V/V - eliminates need for current-feedback op amps in cost-sensitive, low-power designs. |
| Low quiescent current | 1.1mA per channel at +25°C - enables always-on signal conditioning in portable medical and test equipment. |
| High output drive | ±35mA output current into 100Ω - directly drives 150Ω video loads and ADC input RC networks without buffers. |
| Low distortion | 0.06% differential gain / 0.04° differential phase - meets SMPTE 253M and ITU-R BT.601 video standards. |
Applications
| Video Line Driving | xDSL Line Drivers/Receivers |
|---|---|
Use Scenario: Amplifying RGB analog video signals from graphics processors to display panels or broadcast encoders. IC Role / Device Role / Timing Role: Dual-channel DC-coupled line driver providing gain, level-shifting, and impedance matching for three-color channels. Use Value: 0.06% differential gain error and 90MHz bandwidth preserve color fidelity and pixel timing integrity across 1080p60 signals. | Use Scenario: Transmitting and receiving high-frequency DSL signals (up to 30MHz) over twisted-pair telephone lines. IC Role / Device Role / Timing Role: High-linearity receive-path amplifier and transmit-path driver in ADSL2+/VDSL2 line cards. Use Value: –70dBc 2nd-harmonic distortion at 1MHz and 2VPP ensures clean spectral purity for multi-tone DSL modulation schemes. |
| ADC Buffers | High-Speed Imaging Channels |
Use Scenario: Driving the input of 16-bit, 1MSPS SAR ADCs such as ADS8472 in data acquisition systems. IC Role / Device Role / Timing Role: Low-noise, low-distortion input buffer isolating ADC front-end from source impedance variations. Use Value: 8.1nV/√Hz input voltage noise and 3.8ns rise time ensure <0.5LSB noise contribution and minimal aperture jitter. | Use Scenario: Conditioning analog outputs from CMOS image sensors in industrial machine vision cameras. IC Role / Device Role / Timing Role: Dual-channel correlated double sampling (CDS) amplifier and pixel clock-timed signal conditioner. Use Value: Channel-to-channel crosstalk of –68dB at 5MHz prevents interference between adjacent imaging lanes during parallel readout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual wideband op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2889IDR | Lower power (0.85mA/ch), lower bandwidth (50MHz @ G=+2), no disable - optimized for ultra-low-power portable use. | Not suitable for >60MHz video or high-speed ADC buffering requiring >80MHz flat bandwidth. | Select when system-level power budget is <1.5mA/ch and bandwidth demand is ≤50MHz. |
| OPA2690IDR | Higher slew rate (1800V/μs), higher quiescent current (4.5mA/ch), same SO-8 package - designed for extreme speed. | Exceeds thermal limits in compact layouts; requires more aggressive PCB cooling than OPA2890IDR. | Select only when >150MHz small-signal bandwidth or sub-2ns settling is mandatory and power is secondary. |
Compared with OPA2889IDR, OPA2890IDR delivers 80% more bandwidth at only 30% higher supply current; compared with OPA2690IDR, it achieves 90MHz performance at less than half the quiescent power, making it optimal for thermally constrained, battery-operated, or cost-sensitive high-speed analog signal chains.
Availability
OPA2890IDR is available at Aetrix Electronics and suitable for video line driving, xDSL line drivers/receivers, and ADC buffers requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant packaging.
Supply support for OPA2890IDR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The OPA2890 belongs to TI's high-speed precision op amp product line, engineered specifically for wideband, low-distortion, low-power signal conditioning in portable instrumentation, communications infrastructure, and imaging systems.
FAQ
What supply voltages does the OPA2890IDR support?
The OPA2890IDR operates from ±1.5V to ±6V dual supplies or +3V to +12V single supply. Its specified performance is guaranteed from –40°C to +85°C at ±5V or +5V. The SO-8 package (OPA2890IDR) does not include a disable pin, unlike the MSOP-10 variants. Always use local 0.1μF ceramic decoupling capacitors on both +VS and –VS pins.
Does the OPA2890IDR have a disable function?
No, the OPA2890IDR in SO-8 package lacks a disable pin. Disable functionality is exclusive to the MSOP-10 variants (OPA2890IDGST and OPA2890IDGSR), which feature dedicated DIS A and DIS B pins. For OPA2890IDR, power-down must be implemented externally via supply switching or input clamping. The SO-8 pinout contains no control pins beyond the standard dual op-amp configuration.
What is the maximum output current capability of the OPA2890IDR?
The OPA2890IDR delivers ±35mA minimum output current into a 100Ω load on +5V supply, with ±40mA typical into no load. Short-circuit output current is ±65mA. This allows direct driving of 150Ω video loads and 100Ω ADC input networks without external buffers. Output voltage swing degrades linearly below ±3.6V when sourcing/sinking >±30mA.
Can the OPA2890IDR drive a 16-bit SAR ADC like the ADS8472?
Yes, the OPA2890IDR is explicitly cited in TI documentation as ideal for ADC buffering, including the ADS8472. Its 3.2VPP output swing on +5V supply, 3.8ns rise time, and 8.1nV/√Hz input voltage noise ensure <0.5LSB noise contribution and minimal settling error. Use a series resistor (e.g., 10Ω) between OPA2890IDR output and ADS8472 input to dampen resonance with input capacitance.
How does the OPA2890IDR compare to current-feedback op amps in bandwidth vs. power trade-off?
The OPA2890IDR achieves 90MHz bandwidth at G = +2V/V on +5V supply with only 2.1mA total quiescent current - matching the bandwidth of many current-feedback op amps while consuming less than half their typical supply current. Unlike CFB devices, it offers predictable, stable behavior with standard resistive feedback networks and no stability concerns at unity gain.
OPA2890IDR 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:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 400V/µs
- Gain Bandwidth Product:
- 120 MHz
- -3db Bandwidth:
- 250 MHz
- Current - Input Bias:
- 100 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 2.25mA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2890IDR FAQ
1.How can I place an order for OPA2890IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2890IDR 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 OPA2890IDR reliable?
The price and inventory of OPA2890IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2890IDR is usually 5 days.
3.What payment methods are accepted for OPA2890IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2890IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2890IDR?
OPA2890IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2890IDR 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 OPA2890IDR?
For technical support, including OPA2890IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2890IDR requirements.
6.How does Aetrix verify that OPA2890IDR is sourced from the original manufacturer or authorized distributors?
All OPA2890IDR 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 OPA2890IDR meets industry standards.
7.What is the process for return or replacement of OPA2890IDR?
All OPA2890IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2890IDR, 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 OPA2890IDR part is unused and in its original packaging.
Return procedure for OPA2890IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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