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Texas Instruments OPA690IDBVRG4
- Part No.:
- OPA690IDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
OPA690IDBVRG4.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,088
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Product details
Overview
OPA690IDBVRG4 from Texas Instruments is a unity-gain stable, bipolar-input voltage-feedback operational amplifier optimized for high-speed ADC buffering, transimpedance amplification, and video line driving. 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 at ±5V supply.
For engineers reviewing the OPA690IDBVRG4 datasheet, OPA690IDBVRG4 pinout, OPA690IDBVRG4 application, or OPA690IDBVRG4 equivalent, key selection criteria include disable-enabled power management (100µA shutdown current), 6-pin SOT-23 package constraints, high-output-current capability (215mA), low distortion at 5MHz (–85dBc HD2), and thermal performance in portable instrumentation.
Technical Context
The OPA690IDBVRG4 employs a proprietary bipolar input stage and fast output stage architecture enabling both high slew rate (1900V/µs) and unity-gain stability-uncommon in wideband voltage-feedback op amps. Its disable control pin (DIS) provides active high enable / active low shutdown with 40ns enable time and 600ns disable time at ±5V.
It operates across 5V to 12V total supply range (±2.5V to ±6V), supports rail-to-rail output swing under load (±3.7V into 100Ω), and maintains <13ns 0.02% settling time-critical for sampling systems requiring minimal acquisition error before ADC conversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G=1) | 535MHz - enables direct drive of 10-bit+ ADCs sampling ≥250MSPS without bandwidth-limiting filtering |
| Slew rate | 1900V/µs - sustains full-scale 2VPP steps at 5MHz without slewing-induced distortion |
| Output current | ±215mA - drives 100Ω video loads or low-impedance active filters without external buffers |
| Input voltage noise | 4.6nV/√Hz - preserves SNR in precision transimpedance stages with >1kΩ feedback resistors |
| Disable current | 100µA - reduces system standby power by >98% vs 6.1mA quiescent current in battery-powered instruments |
| Supply range | 5V to 12V - supports single-supply (5V) and dual-supply (±5V) configurations in mixed-signal signal chains |
| Settling time (0.02%) | 13ns - meets timing budget for 12-bit ADCs with ≤75ns aperture delay requirements |
Pinout & Package
OPA690IDBVRG4 is packaged in a 6-pin SOT-23 (DBV) with 3mm × 3mm footprint and gull-wing leads. Thermal resistance RθJA is 171.6°C/W, requiring attention to PCB copper area for >85°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Output) | Amplifier output | High-current, low-impedance node capable of sourcing/sinking 215mA; requires series isolation resistor for capacitive loads >10pF |
| 2 (–VS) | Negative supply | Connect to ground in single-supply mode; must be decoupled with 100nF ceramic capacitor near pin |
| 3 (IN+) | Noninverting input | High-impedance (38MΩ || 1pF) node; sensitive to layout parasitics above 100MHz |
| 4 (IN–) | Inverting input | Differential input node; matched trace routing critical to preserve CMRR >60dB at 5MHz |
| 5 (DIS) | Disable control | Active-low logic input; 2.3V max disable threshold ensures compatibility with 3.3V GPIO; pulls output to high-Z state |
| 6 (+VS) | Positive supply | Accepts 2.5V to 6V per rail; PSRR of 86dB minimizes supply ripple coupling into output |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable wideband operation | Eliminates need for external compensation networks in G ≥ 1 configurations, reducing BOM count and layout area |
| Integrated disable function | Reduces supply current from 6.1mA to 100µA in <600ns, enabling dynamic power gating in multi-channel data acquisition systems |
| High-output-current drive | Directly drives 75Ω video lines or 100Ω ADC inputs without external buffer stages, lowering system latency and noise floor |
| Low harmonic distortion at 5MHz | –85dBc HD2 and –75dBc HD3 into 100Ω support clean signal reconstruction in imaging and communications front-ends |
| Fast settling with low glitch | 13ns 0.02% settling and ±50mV turn-on glitch ensure minimal acquisition error in switched-capacitor sampling circuits |
Applications
| High-Speed ADC Buffering | Transimpedance Amplifier |
|---|---|
Use Scenario: Driving the input of a 12-bit, 105MSPS pipeline ADC in medical ultrasound receive path. IC Role / Device Role: Low-noise, high-slew-rate buffer isolating ADC from variable source impedance and minimizing aperture uncertainty. Use Value: 13ns settling time and 4.6nV/√Hz noise preserve ENOB >10.5 bits; disable function powers down unused channels during beamforming idle cycles. | Use Scenario: Converting photodiode current (10nA–100µA) to voltage in optical time-of-flight (ToF) sensor front-end. IC Role / Device Role: Precision transimpedance amplifier with low input bias current (±1µA typ) and high gain-bandwidth product (300MHz). Use Value: 535MHz unity-gain bandwidth supports >50MHz modulation frequencies; low input capacitance (0.1pF) minimizes phase margin degradation with large feedback resistors. |
| Portable Instrumentation Signal Chain | Video Line Driver |
Use Scenario: Signal conditioning stage in handheld spectrum analyzer with battery-powered analog front-end. IC Role / Device Role: Low-quiescent-current (6.1mA) amplifier enabling >8-hour runtime; disable pin reduces current to 100µA during sleep mode. Use Value: Single 5V supply operation eliminates need for dual-rail regulators; 1900V/µs slew rate supports real-time FFT windowing without distortion. | Use Scenario: Driving 75Ω coaxial cable in industrial machine vision camera output interface. IC Role / Device Role: High-output-current (215mA) line driver delivering ±3.7V swing into 75Ω load at 1080p60 resolution. Use Value: Output short-circuit protection (±250mA limit) prevents latch-up during cable disconnect events; low 0.01Ω closed-loop output impedance ensures flat frequency response to 100MHz. |
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 applications with strict slew-rate demands; unsuitable for G=1 ADC buffers due to instability risk | Select OPA695IDBVR only when gain ≥5 and stability analysis confirms loop compensation feasibility |
| LMH6629MF/NOPB | Lower noise (2.4nV/√Hz), lower slew rate (940V/µs), no disable pin; 6-pin SOT-23 package | Preferred for ultra-low-noise preamp stages where power-down is unnecessary and bandwidth ≤200MHz suffices | Choose LMH6629MF/NOPB when input-referred noise dominates system SNR and disable functionality is not required |
Compared with OPA690IDBVRG4, OPA695IDBVR offers higher slew rate but requires careful stability design, while LMH6629MF/NOPB trades off slew and power control for lower noise-making OPA690IDBVRG4 the balanced choice for unity-gain, low-power, high-fidelity signal routing.
Availability
OPA690IDBVRG4 is available at Aetrix Electronics and suitable for high-speed ADC buffering, portable instrumentation signal chains, and video line driving requiring stable component supply, consistent parametric performance across temperature, and long-term obsolescence mitigation.
Supply support for OPA690IDBVRG4 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 over 90 years of innovation in precision amplifiers and high-speed signal conditioning.
The OPA690IDBVRG4 belongs to TI's high-speed voltage-feedback op amp product line, engineered for applications demanding wide bandwidth, fast settling, and integrated power management in space-constrained designs.
FAQ
What is the maximum small-signal bandwidth of OPA690IDBVRG4 at unity gain?
The OPA690IDBVRG4 achieves a small-signal bandwidth of 535MHz at G = 1V/V with ±5V supplies and 100Ω load, as specified in Section 6.5 of the datasheet. This bandwidth remains stable across process and temperature variations, supporting high-fidelity signal reproduction up to Nyquist frequencies of 250MHz-class ADCs without external peaking compensation.
Does OPA690IDBVRG4 support single-supply operation?
Yes, OPA690IDBVRG4 supports single-supply operation from 5V to 12V total supply voltage. At VS = +5V, it delivers 460MHz small-signal bandwidth (G = 1), 850V/µs slew rate, and ±3.9V output swing referenced to midsupply (2.5V), enabling use in portable instruments and industrial sensors without dual-rail supplies.
How does the disable function affect OPA690IDBVRG4 output behavior?
When the DIS pin is pulled low, OPA690IDBVRG4 enters shutdown mode: supply current drops to ≤200µA, output transitions to high-impedance state within 600ns, and off-isolation exceeds 73dB at 5MHz. The output remains electrically disconnected-no DC path or leakage-ensuring channel isolation in multiplexed signal paths.
What thermal considerations apply to OPA690IDBVRG4 in SOT-23 package?
OPA690IDBVRG4 in DBV (SOT-23) package has RθJA = 171.6°C/W. At 6.1mA quiescent current and 215mA peak output, junction temperature rise can exceed 100°C in still air without PCB copper thermal relief. TI recommends ≥100mm² of 2oz copper connected to –VS and +VS pins, plus thermal vias to inner layers, to maintain TJ < 125°C at 85°C ambient.
Can OPA690IDBVRG4 drive a 75Ω video load directly?
Yes, OPA690IDBVRG4 can directly drive a 75Ω video load: it delivers ±3.7V output swing into 100Ω (Section 6.5), and its 215mA output current exceeds the 40mA required for 2.8VPP into 75Ω. For optimal flatness, add a 33Ω series resistor at the output to match characteristic impedance and suppress reflections in coaxial transmission.
OPA690IDBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
OPA690IDBVRG4 FAQ
1.How can I place an order for OPA690IDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA690IDBVRG4 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 OPA690IDBVRG4 reliable?
The price and inventory of OPA690IDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA690IDBVRG4 is usually 5 days.
3.What payment methods are accepted for OPA690IDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA690IDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA690IDBVRG4?
OPA690IDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA690IDBVRG4 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 OPA690IDBVRG4?
For technical support, including OPA690IDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA690IDBVRG4 requirements.
6.How does Aetrix verify that OPA690IDBVRG4 is sourced from the original manufacturer or authorized distributors?
All OPA690IDBVRG4 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 OPA690IDBVRG4 meets industry standards.
7.What is the process for return or replacement of OPA690IDBVRG4?
All OPA690IDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA690IDBVRG4, 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 OPA690IDBVRG4 part is unused and in its original packaging.
Return procedure for OPA690IDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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