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Texas Instruments OPA890IDR
- Part No.:
- OPA890IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA890IDR.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,316
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Product details
Overview
OPA890IDR from Texas Instruments is a unity-gain stable, voltage-feedback operational amplifier optimized for wideband, low-power applications. It delivers 115MHz small-signal bandwidth (G = +2V/V), 500V/μs slew rate, ±4V output swing on ±5V supplies, and 1.1mA quiescent current - enabling high-fidelity video line driving and single-supply ADC buffering in portable instrumentation.
For engineers reviewing the OPA890IDR datasheet, OPA890IDR pinout, OPA890IDR application, or OPA890IDR equivalent, this page provides verified package mapping (SO-8), disable-function timing (7μs disable, 200ns enable), thermal resistance (105°C/W), differential gain/phase (0.05%/0.03°), and real-world harmonic distortion data (–88dBc 2nd-harmonic @ 1MHz, RL = 200Ω).
Technical Context
The OPA890IDR employs a novel transconductance-based input stage that dynamically increases compensation capacitor charging current with input error voltage - achieving 500V/μs slew rate without sacrificing 1.1mA quiescent current. This architecture enables full-power bandwidth exceeding 170MHz at G = +2V/V with 2VPP output swing.
It integrates a dedicated disable pin (DIS) that reduces supply current to ≤30μA while placing the output in high-impedance state, with 70dB off-isolation at 5MHz and only 4pF output capacitance in disabled mode - critical for multiplexed signal paths and power-gated systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 115MHz at G = +2V/V (±5V): supports >100MHz video and imaging signal chains without stability compromise. |
| Slew Rate | 500V/μs (±5V): enables clean 2VPP step response within 3.5ns rise/fall time for fast transient fidelity. |
| Output Swing | ±4V no load (±5V supply): delivers 8VPP dynamic range with <1.5V headroom to rails - ideal for DC-coupled RGB drivers. |
| Quiescent Current | 1.1mA (±5V): lowest supply current among unity-gain stable op amps with >100MHz bandwidth. |
| Disable Current | 30μA max (VDIS = 0V): reduces system standby power by >97% while maintaining output isolation. |
| Input Voltage Noise | 8nV/√Hz (>100kHz): balances low-noise performance with ultra-low power consumption. |
| Differential Gain/Phase | 0.05% / 0.03° (RL = 150Ω): meets broadcast-grade video line driver requirements per SMPTE 253M. |
Pinout & Package
OPA890IDR is packaged in SO-8 (D package), with exposed pad not electrically connected. Pin 1 is DIS, Pin 2 is –VS, Pin 3 is Inverting Input, Pin 4 is Noninverting Input, Pin 5 is Output, Pin 6 is NC, Pin 7 is +VS, Pin 8 is NC - per TI SBOS369B Rev. December 2009.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (DIS) | Disable control input | Pulled LOW disables amplifier (≤30μA IQ, high-Z output); open or HIGH enables normal operation. |
| Pin 2 (–VS) | Negative supply rail | Accepts –1.5V to –6V; must be decoupled with 0.1μF capacitor to +VS for stability. |
| Pin 3 (IN–) | Inverting input | High-impedance node (190kΩ || 0.6pF); requires matched source impedance for bias current cancellation. |
| Pin 4 (IN+) | Noninverting input | Common-mode range extends to ±3.9V (±5V supply); bias current ≤0.1μA max at +25°C. |
| Pin 5 (OUT) | Amplifier output | Drives ≥±35mA into 100Ω; closed-loop output impedance is 0.04Ω at 100kHz for low distortion into capacitive loads. |
| Pin 7 (+VS) | Positive supply rail | Accepts +3V to +12V single supply or ±1.5V to ±6V dual supply; PSRR = 74dB at +VS. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable voltage-feedback architecture | Eliminates need for external compensation networks while delivering 260MHz G = +1 bandwidth - simplifies layout and reduces BOM count. |
| Wideband +5V operation | 105MHz bandwidth and 350V/μs slew rate on single +5V supply - enables compact, low-voltage imaging and portable test equipment designs. |
| Low-disable current with fast switching | 30μA shutdown current with 7μs disable time and 200ns enable time - supports burst-mode signal acquisition and dynamic power scaling. |
| High-output drive capability | ±40mA continuous output current and ±75mA peak short-circuit current - drives 150Ω video loads or multiple ADC inputs without external buffers. |
| Low-distortion video performance | –88dBc 2nd-harmonic and –89dBc 3rd-harmonic at 1MHz (RL = 200Ω) - preserves color fidelity in RGB and YPbPr signal paths. |
Applications
| Video Line Driving | xDSL Line Drivers/Receivers |
|---|---|
|
Use Scenario: Driving 75Ω coaxial cable in RGBHV monitors or broadcast routing switchers. IC Role / Device Role / Timing Role: Unity-gain buffer with DC coupling, preserving sync pulse integrity and minimizing group delay variation. Use Value: 0.05% differential gain and 0.03° differential phase meet SMPTE 253M spec; ±4V swing accommodates 1VP to 4VP video levels on ±5V rails. |
Use Scenario: Transmitting analog upstream/downstream signals over twisted-pair DSL lines. IC Role / Device Role / Timing Role: High-linearity line driver with disable control for power management during idle periods. Use Value: –85dBc harmonic distortion at 1MHz ensures compliance with ITU-T G.992.1 spectral mask; 70dB off-isolation prevents crosstalk during channel sleep. |
| ADC Buffers | High-Speed Imaging Channels |
|
Use Scenario: Driving SAR or pipeline ADC inputs in medical ultrasound or spectrum analyzers. IC Role / Device Role / Timing Role: Low-noise, fast-settling input buffer with 16ns settling to 0.02% for 2V step. Use Value: 8nV/√Hz input noise and 500V/μs slew rate preserve SNR and ENOB at sampling rates up to 100MSPS. |
Use Scenario: Amplifying pixel-level signals from CMOS/CCD image sensors in industrial cameras. IC Role / Device Role / Timing Role: Wideband transimpedance or gain stage with minimal propagation delay (3.5ns rise time). Use Value: 170MHz large-signal bandwidth supports >50MHz pixel clock rates; 1.1mA IQ enables multi-channel integration without thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-feedback operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2890 | Dual-channel version in SO-8; identical AC/DC specs but shares disable pin per package - no independent channel control. | Used where space-constrained dual-channel buffering is needed (e.g., differential ADC front-end), not single-channel replacement. | Select OPA2890 only when dual-channel functionality is required; pinout differs (DIS shared, extra IN+/OUT pair), not drop-in. |
| OPA690 | Higher slew rate (1800V/μs) and bandwidth (500MHz G=+2), but 4.5mA IQ - 4× higher power than OPA890IDR. | Preferred for ultra-high-speed applications (e.g., >200MHz oscilloscope front-ends) where power budget allows. | Choose OPA690 only when bandwidth/slew rate outweigh power constraints; not suitable for battery-powered devices. |
Compared with OPA2890 and OPA690, the OPA890IDR uniquely balances 115MHz bandwidth, 500V/μs slew rate, and 1.1mA quiescent current - making it the only option for portable, high-fidelity signal conditioning where thermal density and battery life are limiting factors.
Availability
OPA890IDR is available at Aetrix Electronics and suitable for video line driving, xDSL line drivers/receivers, and high-speed imaging channels requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for OPA890IDR 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 OPA890IDR belongs to TI's high-speed voltage-feedback op amp product line, designed specifically for low-power, wideband signal conditioning in portable instrumentation, video infrastructure, and communications systems.
FAQ
What supply voltage ranges does the OPA890IDR support?
The OPA890IDR operates from +3V to +12V single supply or ±1.5V to ±6V dual supplies. At ±5V, it achieves 115MHz bandwidth and 500V/μs slew rate; at +5V single supply, bandwidth drops to 105MHz with 350V/μs slew rate. Absolute maximum ratings allow ±6.5V supply, but specified performance is guaranteed only within the operating ranges.
How does the disable function of the OPA890IDR behave electrically?
When the DIS pin is pulled LOW (<0.8V at +85°C), the OPA890IDR reduces quiescent current to ≤30μA and places the output in high-impedance state with 4pF capacitance and 70dB off-isolation at 5MHz. Enable occurs within 200ns when DIS rises above 3.0V; disable completes within 7μs when DIS falls below 1.4V - verified per SBOS369B electrical characteristics tables.
Can the OPA890IDR drive 75Ω video loads while maintaining broadcast specifications?
Yes - the OPA890IDR delivers 0.05% differential gain and 0.03° differential phase into 150Ω loads (per Figure 5), and maintains <0.1% gain flatness to 20MHz. With proper termination and layout, it meets SMPTE 253M for RGB line driving. Its ±4V output swing on ±5V supplies supports 1VP–4VP video levels, and ±35mA drive capability sustains 75Ω loads without droop.
What is the thermal performance of the OPA890IDR in SO-8 package?
The OPA890IDR in SO-8 (D package) has a junction-to-ambient thermal resistance (θJA) of 105°C/W, measured per JEDEC JESD51-7. At 1.1mA quiescent current and typical 20mW dissipation, self-heating remains under 2.5°C in still air - enabling reliable operation in sealed enclosures without forced airflow, provided PCB copper area meets minimum 1-in² thermal pad guidelines.
Does the OPA890IDR require external compensation for unity-gain stability?
No - the OPA890IDR is internally compensated for unity-gain stability. It achieves 260MHz small-signal bandwidth at G = +1V/V (±5V) without external components. The design uses a proprietary transconductance input stage that avoids traditional fixed-current compensation limitations, enabling both stability and wide bandwidth simultaneously - confirmed in Figures 1 and 25 of SBOS369B.
OPA890IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 500V/µs
- Gain Bandwidth Product:
- 130 MHz
- -3db Bandwidth:
- 260 MHz
- Current - Input Bias:
- 100 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 1.1mA
- Current - Output / Channel:
- -
- 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
OPA890IDR FAQ
1.How can I place an order for OPA890IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA890IDR 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 OPA890IDR reliable?
The price and inventory of OPA890IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA890IDR is usually 5 days.
3.What payment methods are accepted for OPA890IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA890IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA890IDR?
OPA890IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA890IDR 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 OPA890IDR?
For technical support, including OPA890IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA890IDR requirements.
6.How does Aetrix verify that OPA890IDR is sourced from the original manufacturer or authorized distributors?
All OPA890IDR 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 OPA890IDR meets industry standards.
7.What is the process for return or replacement of OPA890IDR?
All OPA890IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA890IDR, 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 OPA890IDR part is unused and in its original packaging.
Return procedure for OPA890IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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