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Texas Instruments OPA690IDBVT
- Part No.:
- OPA690IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
OPA690IDBVT.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,930
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Product details
Overview
OPA690IDBVT from Texas Instruments is a wideband, voltage-feedback operational amplifier with disable control, unity-gain stable at 535MHz (G = 1V/V), delivering 215mA output current and 1900V/µs slew rate into 100Ω, with 4.6nV/√Hz input voltage noise - deployed in high-speed ADC buffers and transimpedance amplifiers for imaging and xDSL systems.
For engineers reviewing the OPA690IDBVT datasheet, OPA690IDBVT pinout, OPA690IDBVT application, or OPA690IDBVT equivalent, key selection considerations include its 6-pin SOT-23 package, ±3.9V output swing on ±5V supplies, 13ns settling time (0.02%), low 100µA disable current, and bipolar-input architecture optimized for high-fidelity signal conditioning in portable and battery-powered instrumentation.
Technical Context
The OPA690IDBVT employs a proprietary bipolar-input voltage-feedback architecture enabling both unity-gain stability and current-feedback-class slew performance. Its input stage delivers full-power bandwidth previously limited to current-feedback op amps, while the output stage achieves 215mA drive with minimal headroom - critical for driving low-impedance loads like 100Ω video lines or ADC inputs.
Integrated disable functionality operates via a dedicated DIS pin (Pin 5 in DBV package), enabling fast enable/disable transitions (40ns/600ns) and high off-isolation (73dB). The device maintains specified AC/DC performance across –40°C to +85°C and supports single-supply (5V) or split-supply (±5V) operation with PSRR >68dB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G=1) | 535MHz at ±5V - enables direct RF/IF signal buffering without gain-stage instability. |
| Slew rate | 1900V/µs into 100Ω - supports clean 2VPP pulses at >200MHz without slewing distortion. |
| Output current | ±215mA sourcing/sinking - drives heavy capacitive or resistive loads (e.g., 75Ω video, 100Ω ADC termination). |
| Input voltage noise | 4.6nV/√Hz - preserves SNR in low-level signal chains such as photodiode transimpedance amplifiers. |
| Settling time | 13ns to 0.02% - meets timing budgets for 50+ MSPS sampling systems and fast multiplexed data acquisition. |
| Disable current | 100µA max - reduces system standby power in portable instruments with intermittent signal paths. |
| Supply range | 5V to 12V total - compatible with standard 5V logic rails and industrial ±5V analog subsystems. |
Pinout & Package
OPA690IDBVT 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 signal chains.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Output) | Amplifier output | Delivers rail-to-rail capable ±3.9V swing into 100Ω; requires external isolation resistor for >10pF capacitive loads. |
| 2 (–VS) | Negative supply | Accepts ground (in single-supply mode) or negative rail; must be decoupled with 100nF ceramic capacitor. |
| 3 (IN+) | Noninverting input | High-impedance (38MΩ || 1pF) node; common-mode range extends to ±3.85V on ±5V supplies. |
| 4 (IN–) | Inverting input | Differential input with 6MΩ || 0.1pF impedance; used for feedback network connection in standard configurations. |
| 5 (DIS) | Disable control | Active-low digital enable: <1.7V disables (output Hi-Z, 100µA IQ); >3.3V enables (full operation). |
| 6 (+VS) | Positive supply | Accepts 5V to 12V; PSRR of 68dB minimizes supply noise coupling into sensitive analog outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable wideband operation | 535MHz small-signal bandwidth at G=1 eliminates need for external compensation in buffer applications. |
| High-output-current stage | 215mA drive capability enables direct interface to 75Ω/100Ω transmission lines without external buffers. |
| Ultrafast enable/disable control | 40ns enable and 600ns disable times support dynamic power gating in time-multiplexed signal paths. |
| Low-noise bipolar input | 4.6nV/√Hz input voltage noise and 1.7pA/√Hz current noise optimize dynamic range in precision transimpedance designs. |
| Robust thermal performance | 171.6°C/W junction-to-ambient thermal resistance (DBV) allows >100mW dissipation in ambient air without heatsinking. |
Applications
| High-Speed Imaging Channels | ADC Buffers |
|---|---|
Use Scenario: Amplifying fast transient signals from CCD/CMOS image sensors in medical endoscopy or industrial machine vision. IC Role / Device Role / Timing Role: Voltage-feedback buffer with 13ns settling time and 535MHz bandwidth ensures pixel clock fidelity and minimal inter-symbol interference. Use Value: Preserves spatial resolution by minimizing pulse distortion during analog signal chain digitization at >40MSPS rates. | Use Scenario: Driving SAR or pipeline ADC inputs with 2VPP differential or single-ended signals in data acquisition systems. IC Role / Device Role / Timing Role: Low-output-impedance driver (0.01Ω closed-loop) that settles within 13ns to 0.02%, meeting ADC aperture uncertainty requirements. Use Value: Eliminates external output series resistors and reduces THD to –85dBc at 5MHz, improving ENOB by ≥0.5 bits. |
| Portable Instruments | Transimpedance Amplifiers |
Use Scenario: Signal conditioning in handheld spectrum analyzers or portable oscilloscopes requiring low quiescent power and fast wake-up. IC Role / Device Role / Timing Role: Amplifier with 6.1mA active current and 100µA disable current, controlled via microcontroller GPIO. Use Value: Extends battery life by >3× during idle periods while maintaining sub-1µs reactivation latency for responsive user interfaces. | Use Scenario: Converting photocurrent from avalanche photodiodes (APDs) in optical time-domain reflectometers (OTDRs). IC Role / Device Role / Timing Role: Low-noise (4.6nV/√Hz), high-speed transimpedance stage with 215mA output to drive long coaxial cables. Use Value: Enables >1GHz signal bandwidth in fiber fault detection while maintaining >70dB dynamic range over temperature. |
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 |
|---|---|---|---|
| OPA695IDBVT | Current-feedback architecture; 4300V/µs slew rate but not unity-gain stable; higher input bias current (10µA vs 1µA). | Better for fixed-gain >5V/V stages where bandwidth >1GHz is required; unsuitable for G=1 buffers or high-impedance sensor interfaces. | Select OPA695IDBVT only when absolute slew rate dominates over DC precision and stability requirements. |
| OPA817IDBVT | FET-input, 400MHz GBW, 1000V/µs slew rate, 4.5nV/√Hz noise; lower output current (120mA) and no disable pin. | Preferred for ultra-low input bias current (<10pA) applications (e.g., piezoelectric sensors); lacks power-gating capability. | Choose OPA817IDBVT when input leakage must be <1pA and disable functionality is unnecessary. |
Compared with OPA690IDBVT, OPA695IDBVT trades unity-gain stability and low input bias for extreme slew rate, while OPA817IDBVT sacrifices output drive and disable control to achieve femtoampere-level input bias - making OPA690IDBVT the optimal balance for high-fidelity, power-aware, wideband buffering.
Availability
OPA690IDBVT is available at Aetrix Electronics and suitable for high-speed imaging channels, ADC buffers, and portable instrumentation requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for OPA690IDBVT 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 signal-chain solutions.
The OPA690IDBVT belongs to TI's precision high-speed op amp product line, engineered specifically for applications demanding unity-gain stability, low-noise wideband amplification, and dynamic power control in space- and power-constrained systems.
FAQ
What is the maximum small-signal bandwidth of the OPA690IDBVT at unity gain?
The OPA690IDBVT achieves a small-signal bandwidth of 535MHz at G = 1V/V under ±5V supply conditions, as verified in Section 6.5 of the official datasheet. This performance is enabled by its optimized bipolar input stage and remains stable without external compensation components - a key differentiator among wideband voltage-feedback op amps.
Does the OPA690IDBVT support single-supply operation?
Yes, the OPA690IDBVT operates from a single 5V supply (as documented in Section 6.6), delivering 3.7V to 3.9V positive output swing and 1.1V to 1.3V minimum output voltage with RL = 100Ω to midsupply. Input common-mode range extends from 1.15V to 3.85V, supporting rail-to-rail input capability in properly biased configurations.
How does the disable function behave on the OPA690IDBVT?
When the DIS pin (Pin 5) is pulled low (<1.7V), the OPA690IDBVT enters power-down mode with supply current reduced to ≤200µA and output placed in high-impedance state. Enable time is 40ns and disable time is 600ns, with 73dB off-isolation at 5MHz - enabling precise timing control in multiplexed or burst-mode signal paths using the OPA690IDBVT.
What is the typical input voltage noise density of the OPA690IDBVT?
The OPA690IDBVT exhibits a typical input voltage noise density of 4.6nV/√Hz above 1MHz, confirmed across both ±5V and +5V supply configurations (Sections 6.5 and 6.6). This value remains stable over temperature and supports high-dynamic-range applications such as low-light imaging front-ends and precision transimpedance amplifiers where noise floor directly impacts system sensitivity.
Can the OPA690IDBVT drive a 100Ω load effectively?
Yes, the OPA690IDBVT is explicitly characterized for 100Ω loads, delivering ±3.85V output swing and 215mA sourcing/sinking current at ±5V supplies (Section 6.5). Its low closed-loop output impedance (0.01Ω at 100kHz) and 1900V/µs slew rate ensure minimal distortion and fast settling - making it suitable for driving 100Ω ADC terminations, video lines, and other low-impedance destinations without external buffering.
OPA690IDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
OPA690IDBVT FAQ
1.How can I place an order for OPA690IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA690IDBVT 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 OPA690IDBVT reliable?
The price and inventory of OPA690IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA690IDBVT is usually 5 days.
3.What payment methods are accepted for OPA690IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA690IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA690IDBVT?
OPA690IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA690IDBVT 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 OPA690IDBVT?
For technical support, including OPA690IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA690IDBVT requirements.
6.How does Aetrix verify that OPA690IDBVT is sourced from the original manufacturer or authorized distributors?
All OPA690IDBVT 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 OPA690IDBVT meets industry standards.
7.What is the process for return or replacement of OPA690IDBVT?
All OPA690IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with OPA690IDBVT, 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 OPA690IDBVT part is unused and in its original packaging.
Return procedure for OPA690IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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