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Texas Instruments OPA2690IDR
- Part No.:
- OPA2690IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2690IDR.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,059
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Product details
Overview
OPA2690IDR from Texas Instruments is a dual, wideband, unity-gain stable voltage-feedback operational amplifier with disable control, designed for high-fidelity analog signal conditioning in single- or dual-supply systems. It delivers 220MHz small-signal bandwidth (G = +2), ±4.0V output swing on ±5V supplies, and 1800 V/µs slew rate - enabling clean 2VPP differential driving of high-speed ADCs like the ADS825 at 40MSPS.
For engineers reviewing the OPA2690IDR datasheet, OPA2690IDR pinout, OPA2690IDR application, or OPA2690IDR equivalent, key selection criteria include its 5.5mA/ch quiescent current, 190mA output drive capability, low 5.5nV/√Hz input voltage noise, and SO-8 package compatibility with space-constrained video, imaging, and xDSL line driver designs.
Technical Context
The OPA2690IDR employs a novel transconductance-input stage that decouples slew rate from bias current, achieving 1800 V/µs while maintaining only 5.5mA/ch supply current. Its output stage delivers symmetrical sourcing/sinking current (>±140mA over temperature) with minimal crossover distortion, critical for low harmonic distortion in ADC driver and video applications.
This architecture supports both dc-coupled (±5V) and ac-coupled (+5V) configurations: in single-supply mode, it operates with input common-mode range from 1.5V to 3.5V and output swing from 1.0V to 4.0V (RL = 100Ω to 2.5V), enabling direct interface to 2.5V-centered ADC inputs without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth (G = +2) | 220 MHz @ ±5V - enables full-power signal fidelity up to 100+ MHz for composite video or IF sampling. |
| Slew Rate | 1800 V/µs @ ±5V - supports clean 2VPP step response with <2.8 ns rise time and <12 ns 0.02% settling. |
| Output Current (sourcing/sinking) | ±190 mA min @ ±5V - drives 100Ω loads directly, eliminating external buffers in RGB or differential ADC front-ends. |
| Input Voltage Noise | 5.5 nV/√Hz @ >1 MHz - preserves SNR in wideband receiver chains where op amp noise dominates system floor. |
| Harmonic Distortion (2nd/3rd) | –68 dBc / –70 dBc @ 5 MHz, 2VPP, RL = 100Ω - meets broadcast-grade video and high-resolution ADC SFDR requirements. |
| Supply Range | +5V to +12V single supply or ±2.5V to ±6V dual supply - simplifies power architecture across portable and fixed-line equipment. |
| Quiescent Current | 11 mA max (2 channels) @ ±5V - enables low-power operation in battery-backed instrumentation and imaging modules. |
Pinout & Package
OPA2690IDR is housed in an SO-8 (D) surface-mount package with exposed pad for thermal performance. Pinout follows standard dual op amp configuration with independent disable control omitted (SO-14 variant only includes DIS pins).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input A | Differential input node for Channel A; requires matched impedance for optimal CMRR and distortion performance. |
| 2 | Noninverting Input A | Channel A positive input; bias network required in single-supply ac-coupled configurations (e.g., 698Ω to 2.5V). |
| 3 | Output A | High-current, low-impedance output capable of ±190 mA into 100Ω load with <0.04 Ω closed-loop ZOUT. |
| 4 | V– | Negative supply rail connection; must be decoupled with 0.1 µF capacitor to V+ for optimal 2nd-harmonic suppression. |
| 5 | V+ | Positive supply rail; accepts +5V to +12V or ±2.5V to ±6V; internal ESD protection rated to 2000 V HBM. |
| 6 | Output B | Independent Channel B output; fully isolated from Channel A (–85 dB crosstalk @ 5 MHz) for I/Q or dual-channel ADC buffering. |
| 7 | Noninverting Input B | Channel B positive input; identical biasing requirements as Pin 2 for matched channel performance. |
| 8 | Inverting Input B | Channel B negative input; symmetry with Pin 1 ensures consistent gain accuracy and phase matching across channels. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable wideband operation | 220 MHz BW at G = +2 with no external compensation - eliminates stability risk in high-speed gain blocks. |
| Single-supply ADC interface capability | 1.0V to 4.0V output swing on +5V supply with 2.5V common-mode reference - directly drives ADS825 and similar 10-bit/40MSPS ADCs. |
| Low distortion at high frequency | –70 dBc 3rd-harmonic @ 5 MHz, 2VPP into 100Ω - meets NTSC/PAL differential gain/phase specs (0.06%/0.03°). |
| Matched dual-channel performance | –85 dB channel-to-channel crosstalk @ 5 MHz - enables precise I/Q signal processing without inter-channel interference. |
| Thermally robust SO-8 package | 125°C/W junction-to-ambient thermal resistance - supports continuous 190mA output drive in industrial ambient conditions. |
Applications
| Video Line Driving | xDSL Line Driver/Receiver |
|---|---|
|
Use Scenario: Driving 75Ω coaxial cable in broadcast-quality SD/HD video distribution systems. IC Role / Device Role / Timing Role: High-current, low-distortion buffer amplifying composite or component video signals before transmission. Use Value: Delivers 0.06% differential gain and 0.03° differential phase error at NTSC frequencies, preserving color fidelity without post-correction. |
Use Scenario: Transmitting and receiving analog line signals in ADSL2+ and VDSL2 modems. IC Role / Device Role / Timing Role: Line driver and receiver front-end amplifier handling 1–30 MHz upstream/downstream bands. Use Value: 220 MHz bandwidth and –70 dBc 3rd-harmonic distortion ensure compliance with ITU-T G.992.5 spectral mask requirements. |
| High-Speed Imaging Channels | ADC Buffers |
|
Use Scenario: Conditioning analog outputs from CMOS/CCD image sensors in medical or industrial cameras. IC Role / Device Role / Timing Role: Low-noise, fast-settling gain block between sensor array and high-speed ADC. Use Value: 5.5nV/√Hz input noise and 8 ns 0.1% settling time preserve dynamic range and timing accuracy in 10-bit+ imaging pipelines. |
Use Scenario: Providing low-impedance, low-distortion input signal to TI ADS825 10-bit 40MSPS ADC. IC Role / Device Role / Timing Role: Differential driver generating clean 2VPP input signal centered at 2.5V for single-supply ADC. Use Value: Output swing from 1.0V to 4.0V on +5V supply matches ADS825's input range, eliminating level-shifting components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2691IDR | Current-feedback architecture; higher 250 MHz bandwidth but requires external feedback resistor tuning and has higher input bias current (±15 µA vs ±11 µA). | Better suited for fixed-gain, ultra-wideband applications where gain-setting flexibility is secondary to raw speed. | Select OPA2691IDR only when >220 MHz small-signal bandwidth is mandatory and layout allows careful RF/RI matching. |
| LMH6629MA/NOPB | Lower 1.9 nV/√Hz input voltage noise and 1.5 GHz GBW, but limited to ±5V max supply and no disable function; SO-8 footprint differs (exposed pad not standard). | Preferred in ultra-low-noise photodiode transimpedance or RF IF amplifier roles where noise dominates distortion. | Choose LMH6629MA/NOPB when input-referred noise is the primary constraint and single-supply ADC driving is not required. |
Compared with OPA2690IDR, OPA2691IDR trades voltage-feedback simplicity and distortion performance for marginal bandwidth gain, while LMH6629MA/NOPB prioritizes noise reduction at the expense of supply flexibility and ADC interface optimization.
Availability
OPA2690IDR is available at Aetrix Electronics and suitable for video line driving, xDSL line driver/receiver, and high-speed imaging channels requiring stable component supply, long-term industrial lifecycle support, and traceable sourcing from authorized channels.
Supply support for OPA2690IDR 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 innovation in high-performance op amps and data converters.
The OPA2690IDR belongs to TI's precision high-speed op amp product line, engineered specifically for demanding signal chain applications including ADC drivers, video infrastructure, and broadband communications equipment.
FAQ
What supply voltages does the OPA2690IDR support?
The OPA2690IDR operates from +5V to +12V single supply or ±2.5V to ±6V dual supply. At ±5V, it delivers ±4.0V output swing and 220MHz bandwidth; at +5V, output swings from 1.0V to 4.0V with 190MHz bandwidth. Absolute maximum ratings cap at ±6.5V supply, and thermal design must account for 125°C/W θJA in SO-8 package.
Does the OPA2690IDR have disable functionality?
No, the OPA2690IDR (SO-8 package) does not include disable pins. Disable control is exclusive to the SO-14 variant (OPA2690I-14D), which provides DIS A and DIS B terminals. The OPA2690IDR remains active whenever powered; power-down must be achieved via supply sequencing or external switching.
Can the OPA2690IDR drive a 100Ω load directly?
Yes, the OPA2690IDR sources and sinks ≥±140mA over temperature into 100Ω loads, supporting full ±3.9V output swing at ±5V supply. In +5V single-supply mode, it delivers 3.9V max and 1.1V min into 100Ω referenced to 2.5V, making it suitable for driving terminated video lines or ADC input networks without external buffers.
What is the input voltage noise of the OPA2690IDR and how does it impact system SNR?
The OPA2690IDR has 5.5 nV/√Hz input voltage noise above 1 MHz. In a 100MHz bandwidth system, this contributes ~55 nV RMS noise referred to input, which becomes dominant in high-gain, wideband stages. When driving a 10-bit 40MSPS ADC like the ADS825, this noise sets a theoretical SNR ceiling of ~65dB - sufficient for most video and communications applications but not ultra-low-noise instrumentation.
How does the OPA2690IDR compare to the OPA2690I-14D in pin compatibility and performance?
The OPA2690IDR (SO-8) and OPA2690I-14D (SO-14) share identical electrical specifications, including bandwidth, slew rate, and distortion. However, the SO-14 variant adds DIS A/DIS B pins and removes two NC pins present in SO-8. They are not pin-compatible: SO-8 uses standard dual-op-amp pinout (1–4 and 5–8), while SO-14 reassigns pins 3/4/11/12 for disable control and NC functions.
OPA2690IDR 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:
- 1800V/µs
- Gain Bandwidth Product:
- 300 MHz
- -3db Bandwidth:
- 500 MHz
- Current - Input Bias:
- 5 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 11mA (x2 Channels)
- Current - Output / Channel:
- 190 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2690IDR FAQ
1.How can I place an order for OPA2690IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2690IDR 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 OPA2690IDR reliable?
The price and inventory of OPA2690IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2690IDR is usually 5 days.
3.What payment methods are accepted for OPA2690IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2690IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2690IDR?
OPA2690IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2690IDR 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 OPA2690IDR?
For technical support, including OPA2690IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2690IDR requirements.
6.How does Aetrix verify that OPA2690IDR is sourced from the original manufacturer or authorized distributors?
All OPA2690IDR 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 OPA2690IDR meets industry standards.
7.What is the process for return or replacement of OPA2690IDR?
All OPA2690IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2690IDR, 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 OPA2690IDR part is unused and in its original packaging.
Return procedure for OPA2690IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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