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Texas Instruments OPA694IDBVR
- Part No.:
- OPA694IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA694IDBVR.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,745
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Product details
Overview
OPA694IDBVR from Texas Instruments is a current-feedback operational amplifier optimized for wideband video line driving, ADC buffering, and RF signal conditioning. It delivers 690MHz bandwidth at +2V/V gain, 1700V/µs slew rate, 5.8mA supply current, and ±80mA output drive - enabling high-fidelity NTSC/PAL video transmission over 75Ω coaxial lines and low-distortion sampling in 12-bit ADC front-ends.
For engineers reviewing the OPA694IDBVR datasheet, OPA694IDBVR pinout, OPA694IDBVR application, or OPA694IDBVR equivalent, key selection criteria include its unity-gain stable 1.5GHz bandwidth, differential gain/phase error of 0.03%/0.015°, SOT23-5 package footprint, ±5V dual-supply operation, and current-feedback architecture's gain-bandwidth independence.
Technical Context
The OPA694IDBVR employs a current-feedback topology with ~30Ω inverting input impedance and open-loop transimpedance of 145kΩ at 25°C. Its bandwidth remains stable across gains (e.g., 200MHz at G=+10) due to noise-gain–dependent feedback resistor tuning rather than voltage-feedback pole-splitting.
It features an improved output stage delivering ±3.4V swing into 100Ω load with <1.5V headroom, low 2.1nV/√Hz input voltage noise, and 22pA/√Hz inverting input current noise - critical for preserving SNR in high-resolution analog signal chains operating up to 675MHz full-power bandwidth.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth (G=+2) | 690MHz - enables >300MHz video baseband passband with margin for filter roll-off |
| Slew Rate | 1700V/µs - supports clean 2VPP step response with ≤20ns settling to 0.01% |
| Supply Current | 5.8mA - allows dense placement in multi-channel video routers without thermal overload |
| Differential Gain/Phase Error | 0.03%/0.015° - meets broadcast-grade NTSC timing fidelity requirements |
| Output Drive | ±80mA - drives 75Ω coaxial cable directly without external buffer stages |
| Input Voltage Noise | 2.1nV/√Hz - preserves dynamic range in 12-bit ADC driver applications |
| Unity-Gain Bandwidth | 1.5GHz - provides flat frequency response for wideband IF/RF amplification |
Pinout & Package
SOT23-5 package with 1.6mm × 2.9mm footprint, 0.95mm height, and 0.95mm pitch; thermally enhanced for 150°C/W junction-to-ambient resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Output) | Amplifier output node | Drives 75Ω or 100Ω loads directly; requires local 0.1µF decoupling to V– |
| 2 (–VS) | Negative power supply | Connect to –5V rail with dedicated low-inductance path to ground plane |
| 3 (Noninverting Input) | High-impedance reference input | CMIR = ±2.5V at 25°C; bias current ≤±5µA; used for DC-coupled video reference |
| 4 (+VS) | Positive power supply | Connect to +5V rail; optional 0.1µF capacitor between +VS and –VS improves 2nd-harmonic distortion |
| 5 (Inverting Input) | Low-impedance summing node | ~30Ω input resistance; sets closed-loop bandwidth via RF; sensitive to PCB parasitic capacitance |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Maintains 200MHz bandwidth even at G=+10 - eliminates gain-dependent bandwidth trade-offs in video routing |
| ±80mA output drive | Directly drives 75Ω RG-59 cable without external emitter follower, reducing BOM count and layout area |
| 0.03%/0.015° differential gain/phase | Meets SMPTE RP-168 and ITU-R BT.601 broadcast video linearity specs without post-correction |
| 1700V/µs slew rate | Preserves edge integrity in HD video pulses and fast ADC sampling clocks up to 100MHz |
| SOT23-5 package | Enables 3.5mm² board space per channel in high-density video switch matrices and portable test equipment |
Applications
| Video Line Driver | ADC Driver |
|---|---|
Use Scenario: Driving composite NTSC video signals over 100m of RG-59 coaxial cable in broadcast production switchers. IC Role / Device Role / Timing Role: Unity-gain buffer with 75Ω source termination and 75Ω load matching to minimize reflections and preserve rise time. Use Value: 0.03% differential gain error ensures color fidelity across full 4.2MHz luminance band without calibration. | Use Scenario: Conditioning analog inputs to 12-bit, 105MSPS ADCs in software-defined radio receivers. IC Role / Device Role / Timing Role: Low-noise, low-distortion gain-of-two driver with 675MHz full-power bandwidth to support Nyquist zone sampling. Use Value: –72dBc 3rd-harmonic distortion at 5MHz enables >70dB SFDR in baseband digitization. |
| Matrix Switch Buffer | Differential Receiver |
Use Scenario: Output buffering in 32×32 SDI video routing matrices requiring minimal crosstalk and fast settling. IC Role / Device Role / Timing Role: High-isolation, low-capacitance buffer isolating crosspoint switches from downstream loads. Use Value: 1.5GHz unity-gain bandwidth ensures sub-1ns pulse fidelity across all switching paths. | Use Scenario: Converting single-ended IF signals (e.g., 70MHz) to differential pairs for high-dynamic-range demodulators. IC Role / Device Role / Timing Role: Inverting summing amplifier generating balanced outputs with matched phase/gain. Use Value: 200MHz bandwidth at G=–8 maintains amplitude flatness across entire IF passband. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA695IDBVR | Higher 3rd-order intercept (+22dBm vs +15dBm), 1.7GHz bandwidth, 7.5mA supply current | Better suited for RF front-end gain blocks where spurious-free dynamic range >80dB is required | Select OPA695IDBVR when harmonic distortion below –85dBc at 70MHz is mandatory |
| LMH6702MF/NOPB | Lower 3.3mA supply current, 1.8GHz bandwidth, but higher 4.2nV/√Hz input noise | Preferred for ultra-low-power portable instrumentation where noise floor is less critical than quiescent power | Choose LMH6702MF/NOPB when system-level power budget restricts per-channel draw to <4mA |
Compared with OPA694IDBVR, OPA695IDBVR offers superior RF linearity at higher power, while LMH6702MF/NOPB trades noise performance for lower supply current - making OPA694IDBVR the optimal balance of video fidelity, power efficiency, and SOT23-5 integration density.
Availability
OPA694IDBVR is available at Aetrix Electronics and suitable for video line drivers, ADC front-ends, matrix switch buffers, and differential receivers requiring stable component supply across industrial temperature ranges.
Supply support for OPA694IDBVR 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-speed op amp design and manufacturing.
The OPA694IDBVR belongs to TI's precision current-feedback amplifier product line, engineered specifically for broadcast video infrastructure, high-speed data acquisition, and RF signal conditioning where bandwidth, linearity, and power efficiency intersect.
FAQ
What is the maximum recommended supply voltage for OPA694IDBVR?
The absolute maximum supply voltage for OPA694IDBVR is ±6.5V DC, but the specified operating range is ±3.5V to ±6.3V. For optimal performance and reliability, TI recommends using ±5V supplies - the condition under which all AC and DC specifications (including 690MHz bandwidth and 0.03% differential gain error) are guaranteed. Exceeding ±6.3V risks permanent damage per Absolute Maximum Ratings.
Does OPA694IDBVR require external compensation for stability?
No, OPA694IDBVR is unity-gain stable and does not require external compensation capacitors. Its current-feedback architecture inherently maintains stability across gains from +1 to +10 when RF is selected per TI's noise-gain–based guidelines (e.g., RF = 402Ω for G=+2). However, layout best practices - including short traces to inverting input, ground-plane isolation, and local 0.1µF decoupling on both supplies - are essential to prevent oscillation.
Can OPA694IDBVR drive 75Ω coaxial cable directly?
Yes, OPA694IDBVR can drive 75Ω coaxial cable directly. Its ±80mA output drive capability supports 75Ω termination while maintaining ±3.4V output swing and 0.03%/0.015° differential gain/phase error. For optimal return loss, use a series 75Ω resistor at the output pin (not internal to the IC) and ensure proper PCB impedance control - as validated in TI's SBOS319G Figure 31 test circuit.
What is the thermal resistance (θJA) of the OPA694IDBVR package?
The OPA694IDBVR uses a SOT23-5 package with a junction-to-ambient thermal resistance (θJA) of 150°C/W, as specified in the Thermal Characteristics table of the SBOS319G datasheet. This value assumes standard JEDEC 2-layer board conditions; actual θJA improves with added copper pour and thermal vias. At 5.8mA quiescent current and ±5V supplies, power dissipation is ~58mW, resulting in <9°C junction rise above ambient under typical conditions.
Is OPA694IDBVR pin-compatible with other SOT23-5 op amps?
OPA694IDBVR follows the industry-standard SOT23-5 pinout (Output/–VS/Noninv+/+VS/Inv–), matching TI's OPA683, OPA684, and LMH6702 families. However, pin compatibility does not guarantee functional interchangeability - current-feedback topology, bandwidth, and bias current differ significantly. Substitution requires verification of loop stability, noise gain, and output loading per application circuit.
OPA694IDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1700V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.5 GHz
- Current - Input Bias:
- 5 µA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 5.8mA
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 7 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA694IDBVR FAQ
1.How can I place an order for OPA694IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA694IDBVR 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 OPA694IDBVR reliable?
The price and inventory of OPA694IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA694IDBVR is usually 5 days.
3.What payment methods are accepted for OPA694IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA694IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA694IDBVR?
OPA694IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA694IDBVR 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 OPA694IDBVR?
For technical support, including OPA694IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA694IDBVR requirements.
6.How does Aetrix verify that OPA694IDBVR is sourced from the original manufacturer or authorized distributors?
All OPA694IDBVR 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 OPA694IDBVR meets industry standards.
7.What is the process for return or replacement of OPA694IDBVR?
All OPA694IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA694IDBVR, 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 OPA694IDBVR part is unused and in its original packaging.
Return procedure for OPA694IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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