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Texas Instruments OPA690IDBVR
- Part No.:
- OPA690IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
OPA690IDBVR.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,072
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Product details
Overview
OPA690IDBVR from Texas Instruments is a unity-gain stable, voltage-feedback operational amplifier optimized for high-speed signal conditioning. It delivers 535MHz small-signal bandwidth (G = 1), 1900V/µs slew rate into 100Ω, ±3.9V output swing, and 4.6nV/√Hz input voltage noise - enabling use in ADC buffers, transimpedance amplifiers, and video line drivers.
For engineers reviewing the OPA690IDBVR datasheet, OPA690IDBVR pinout, OPA690IDBVR application, or OPA690IDBVR equivalent, key selection criteria include disable functionality (100µA power-down current), bipolar-input architecture, 6-pin SOT-23 package constraints, and performance trade-offs between ±5V and single-supply 5V operation.
Technical Context
The OPA690IDBVR employs a proprietary bipolar-input voltage-feedback architecture with a novel output stage delivering 215mA sourcing/sinking capability while maintaining minimal headroom. Its disable pin (DIS) enables fast enable/disable transitions (40ns/600ns) and high off-isolation (73dB), critical for time-multiplexed or power-gated systems.
Unlike current-feedback op amps, it achieves unity-gain stability without external compensation, supporting precise gain configurations (G = 1 to 10) with flat frequency response up to 25MHz (0.1-dB gain flatness) and low harmonic distortion (–85dBc HD2 at 5MHz, RL = 100Ω).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G=1) | 535MHz - supports >200MSPS ADC buffering with minimal phase lag |
| Slew rate | 1900V/µs - enables clean 2VPP pulses at 225MHz large-signal bandwidth | Input voltage noise | 4.6nV/√Hz - preserves SNR in low-level signal amplification paths |
| Output current | ±215mA - drives 100Ω loads directly without external boost stages |
| Disable current | 100µA - reduces system standby power in portable instruments |
| Supply range | 5V to 12V - compatible with both single-supply (5V) and dual-supply (±5V) rails |
| Settling time (0.02%) | 13ns - meets timing budgets in fast sampling data acquisition systems |
Pinout & Package
OPA690IDBVR is housed in a 6-pin SOT-23 (DBV) package measuring 3mm × 3mm, optimized for space-constrained PCB layouts in portable instrumentation and high-density analog front-ends.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Output) | Amplifier output | Delivers full 215mA drive into 100Ω; requires isolation resistor for capacitive loads >10pF |
| 2 (–VS) | Negative supply | Connect to ground in single-supply 5V operation; supports ±5V dual-rail |
| 3 (IN+) | Noninverting input | High-impedance node (38MΩ || 1pF); common-mode range extends to ±3.85V |
| 4 (IN–) | Inverting input | Used for feedback network connection; matched to IN+ for precision closed-loop gain |
| 5 (DIS) | Disable control | Active-low logic input; <1.7V disables amplifier, >3.3V enables; 60–130µA input bias |
| 6 (+VS) | Positive supply | Accepts 5V to 12V; PSRR of 85dB minimizes supply noise coupling to output |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stability | No external compensation required for G ≥ 1 configurations, simplifying layout and reducing BOM count |
| Fast enable/disable | 40ns enable and 600ns disable times support dynamic power gating in multi-channel systems |
| High-output-current stage | 215mA drive capability eliminates need for discrete output buffers in video and xDSL line drivers |
| Low-noise bipolar input | 4.6nV/√Hz voltage noise and 1.7pA/√Hz current noise optimize SNR in transimpedance applications |
| Robust disable isolation | 73dB off-state isolation prevents crosstalk in multiplexed sensor or imaging channel architectures |
Applications
| ADC Buffering | Transimpedance Amplifier |
|---|---|
Use Scenario: Driving the input of a 16-bit, 100MSPS SAR ADC in a medical imaging front-end. IC Role / Device Role / Timing Role: High-fidelity buffer isolating ADC input from source impedance; provides 13ns settling to meet aperture uncertainty requirements. Use Value: 535MHz bandwidth and 1900V/µs slew rate preserve transient fidelity across full Nyquist band without gain peaking. | Use Scenario: Converting photodiode current (10nA–10µA) to voltage in optical coherence tomography (OCT) systems. IC Role / Device Role / Timing Role: Low-noise, high-speed TIA core; DIS pin enables synchronized blanking during laser pulse intervals. Use Value: 4.6nV/√Hz input noise and 215mA output drive allow wide dynamic range and fast settling for kHz-rate scanning. |
| Portable Instrumentation | Video Line Driver |
Use Scenario: Signal conditioning stage in handheld spectrum analyzers with battery-powered operation. IC Role / Device Role / Timing Role: Low-power, high-bandwidth gain block; DIS pin reduces quiescent current from 6.1mA to 100µA during idle periods. Use Value: 100µA disable current extends battery life without sacrificing wake-up speed (<600ns recovery). | Use Scenario: Driving 75Ω coaxial video lines in broadcast-grade SDI interface cards. IC Role / Device Role / Timing Role: Output driver with rail-to-rail swing and high current delivery to maintain signal integrity over long traces. Use Value: ±3.9V output swing into 100Ω and –85dBc HD2 at 5MHz ensure compliance with SMPTE 259M eye diagram masks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA695IDBVR | Current-feedback architecture; 4300V/µs slew rate but not unity-gain stable; higher input current noise (1.8pA/√Hz) | Better for fixed-gain >5, ultra-high-speed pulse amplification; unsuitable for G=1 or variable-gain loops | Select OPA695IDBVR only when absolute slew rate dominates stability and noise requirements |
| OPA817IDBVR | FET-input; 400MHz GBW, 1000V/µs slew rate, 4.5nV/√Hz noise; no disable function; higher input impedance (10¹²Ω) | Preferred for high-Z sensor interfaces and low-power DC-coupled applications where disable is unnecessary | Choose OPA817IDBVR when input bias current <1pA and absence of DIS pin is acceptable |
Compared with OPA695IDBVR and OPA817IDBVR, the OPA690IDBVR uniquely balances unity-gain stability, integrated disable control, and bipolar-input low-noise performance - making it the only option among the three suitable for G=1 ADC buffering with dynamic power management.
Availability
OPA690IDBVR is available at Aetrix Electronics and suitable for high-speed imaging channels, ADC buffering, and portable instrumentation requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for OPA690IDBVR 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 high-performance op amp design and manufacturing.
The OPA690IDBVR belongs to TI's high-speed voltage-feedback op amp product line, engineered specifically for applications demanding wide bandwidth, fast settling, and integrated power management in compact form factors.
FAQ
What is the maximum small-signal bandwidth of the OPA690IDBVR at unity gain?
The OPA690IDBVR achieves a small-signal bandwidth of 535MHz at G = 1V/V under ±5V supply conditions with VO = 0.5VPP and RF = 25Ω. This specification is measured per the official Texas Instruments SBOS223H datasheet and reflects its unity-gain stable architecture optimized for high-frequency closed-loop operation without external compensation.
Does the OPA690IDBVR support single-supply operation?
Yes, the OPA690IDBVR supports single-supply operation from 5V to 12V. At VS = 5V, it delivers 460MHz small-signal bandwidth (G = 1), 850V/µs slew rate, and output swing from 1.1V to 3.9V (referenced to midsupply). Input common-mode range extends from 1.15V to 3.85V, enabling direct interfacing with 3.3V logic-controlled circuits.
How does the disable (DIS) pin function on the OPA690IDBVR?
The DIS pin on the OPA690IDBVR is an active-low digital control input. Pulling DIS below 1.7V (typical) disables the amplifier, reducing supply current to 100µA and placing the output in high-impedance state with 73dB off-isolation. Holding DIS above 3.3V enables normal operation. Enable/disable transition times are 40ns and 600ns respectively, as verified in the SBOS223H datasheet.
What is the input voltage noise density of the OPA690IDBVR, and at what frequency is it specified?
The OPA690IDBVR has an input voltage noise density of 4.6nV/√Hz, specified at frequencies above 1MHz under ±5V supply conditions. This value remains stable across temperature and supply variations and is confirmed in Section 6.5 of the SBOS223H datasheet - a key parameter enabling high-SNR performance in low-amplitude signal chains such as photodiode transimpedance amplifiers.
Can the OPA690IDBVR drive a 75Ω video load while maintaining signal integrity?
Yes, the OPA690IDBVR can drive a 75Ω video load with verified performance: it delivers ±3.7V output swing into 100Ω (representative of 75Ω loading), –85dBc HD2 at 5MHz, and 225MHz large-signal bandwidth. For optimal 75Ω line driving, TI recommends using a series 22Ω isolation resistor at the output to dampen potential ringing, as detailed in Application Note SBAA322.
OPA690IDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1800V/µs
- Gain Bandwidth Product:
- 300 MHz
- -3db Bandwidth:
- 500 MHz
- Current - Input Bias:
- 3 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 5.5mA
- 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:
- SOT-23-6
OPA690IDBVR FAQ
1.How can I place an order for OPA690IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA690IDBVR 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 OPA690IDBVR reliable?
The price and inventory of OPA690IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA690IDBVR is usually 5 days.
3.What payment methods are accepted for OPA690IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA690IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA690IDBVR?
OPA690IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA690IDBVR 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 OPA690IDBVR?
For technical support, including OPA690IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA690IDBVR requirements.
6.How does Aetrix verify that OPA690IDBVR is sourced from the original manufacturer or authorized distributors?
All OPA690IDBVR 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 OPA690IDBVR meets industry standards.
7.What is the process for return or replacement of OPA690IDBVR?
All OPA690IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA690IDBVR, 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 OPA690IDBVR part is unused and in its original packaging.
Return procedure for OPA690IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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