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Texas Instruments OPA3690ID
- Part No.:
- OPA3690ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA3690ID.pdf
- Description:
- IC OPAMP VFB 3 CIRCUIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,651
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Product details
Overview
OPA3690ID from Texas Instruments is a triple, wideband, voltage-feedback operational amplifier with individual disable control per channel, designed for high-fidelity video and high-speed analog signal conditioning. It delivers 220MHz bandwidth at G = +2, 1800V/µs slew rate, ±4.0V output swing on ±5V supplies, and 190mA output current - enabling RGB line driving and ADC input buffering in compact single-supply systems.
For engineers reviewing the OPA3690ID datasheet, OPA3690ID pinout, OPA3690ID application, or OPA3690ID equivalent, key selection criteria include its triple-channel architecture with independent disable pins, 5.5mA/ch quiescent current, ±3.5V common-mode input range, and SO-16 package compatibility with space-constrained video and imaging PCB layouts.
Technical Context
The OPA3690ID uses a novel voltage-feedback architecture with a transconductance-based input stage that enables 1800V/µs slew rate while maintaining unity-gain stability - a performance previously limited to current-feedback op amps. Its output stage supports rail-swing headroom of only 1V on +5V supply, delivering 3VPP output with >150MHz bandwidth.
Each channel features a dedicated disable pin (DIS A/B/C) that reduces supply current to <300µA/ch and places the output in high-impedance state within 25ns enable time. The device operates across –40°C to +85°C with tested DC accuracy including ±1.0mV input offset voltage and 69dB open-loop gain at +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (G = +2) | 220MHz - supports NTSC/PAL video signal amplification without phase distortion up to 5.75MHz luminance bandwidth |
| Slew Rate | 1800V/µs - enables clean 4V step response in ≤2.8ns, critical for fast-settling ADC driver applications |
| Output Current | ±190mA - drives 100Ω loads directly, eliminating external buffers in RGB line driver designs |
| Supply Range | ±2.5V to ±6V dual or +5V to +12V single - allows operation from standard logic rails without dedicated analog supplies |
| Disable Current | <300µA/ch - reduces total system power by >98% when channels are idle, ideal for power-gated imaging pipelines |
| Input Voltage Noise | 5.5nV/√Hz - maintains SNR integrity in low-level sensor signal conditioning paths up to 100MHz |
| Differential Gain/Phase | 0.06%/0.01° - meets broadcast-grade video fidelity requirements for professional RGB and composite video systems |
Pinout & Package
The OPA3690ID is housed in a 16-pin SOIC (SO-16) package with 1.27mm pitch, JEDEC MS-012 compliant, suitable for reflow soldering and automated assembly. Thermal resistance θJA is 100°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–IN A) | Inverting input, Channel A | Differential pair input node; requires matched impedance to +IN A for optimal CMRR |
| 2 (+IN A) | Non-inverting input, Channel A | Bias point for ac-coupled video signals; 698Ω divider sets 2.5V midpoint on +5V supply |
| 3 (DIS B) | Disable control, Channel B | Active-low logic input; pulls LOW to place Channel B output in high-Z state with <300µA supply current |
| 4 (–IN B) | Inverting input, Channel B | Independent signal path; no crosstalk coupling to Channels A or C (–64dB typical) |
| 5 (+IN B) | Non-inverting input, Channel B | DC-biased at same potential as +IN A for multi-channel synchronization |
| 6 (DIS C) | Disable control, Channel C | Enables per-channel power gating in RGB systems without affecting other channels |
| 7 (–IN C) | Inverting input, Channel C | Third identical signal path; supports simultaneous R/G/B amplification with matched settling (8ns to 0.1%) |
| 8 (+IN C) | Non-inverting input, Channel C | Provides third bias reference; all three +IN pins share common 2.5V bias network |
| 9 (DIS A) | Disable control, Channel A | First disable pin; open or HIGH for normal operation; LOW disables Channel A only |
| 10 (+VS) | Positive supply | Connects to +5V (single) or +5V (dual); decoupling capacitor required within 10mm |
| 11 (OUT A) | Output, Channel A | Capable of sourcing/sinking ±190mA into 100Ω load; 0.04Ω closed-loop output impedance |
| 12 (–VS) | Negative supply | Connects to ground (single) or –5V (dual); 0.1µF capacitor between +VS and –VS improves 2nd-harmonic distortion |
| 13 (OUT B) | Output, Channel B | Electrically isolated from OUT A/C; 70dB off-isolation at 5MHz prevents inter-channel feedthrough |
| 14 (+VS) | Positive supply (redundant) | Second +VS connection for improved current distribution; must be tied to same net as Pin 10 |
| 15 (OUT C) | Output, Channel C | Delivers identical performance to OUT A/B; supports simultaneous triple-output video timing |
| 16 (–VS) | Negative supply (redundant) | Second –VS connection; ties to same net as Pin 12 for thermal and noise reduction |
Key Features
| Feature | Design Value |
|---|---|
| Triple-channel integration with per-channel disable | Reduces board area by 60% vs. discrete op amp solutions while enabling dynamic power management in RGB systems |
| 1800V/µs slew rate with unity-gain stability | Eliminates need for external compensation networks, simplifying layout and improving phase margin in G = +1 video drivers |
| ±4.0V output swing on ±5V supplies | Supports full-scale 1V–4V video signal transmission without clipping, meeting SMPTE 259M amplitude requirements |
| 0.06% differential gain / 0.01° differential phase | Meets ITU-R BT.601 broadcast video specifications without post-correction circuitry |
| 5.5mA/ch quiescent current with trim at +25°C | Ensures predictable thermal rise (<1.5°C/W) in densely packed video processing modules |
| 165MHz minimum small-signal bandwidth over temperature | Maintains consistent video bandwidth across industrial temperature range (–40°C to +85°C) |
Applications
| RGB Video Line Driving | High-Speed ADC Input Buffering |
|---|---|
Use Scenario: Driving three 75Ω coaxial cables carrying red, green, and blue analog video signals from a graphics processor to a display interface. IC Role / Device Role / Timing Role: Triple-channel voltage buffer with independent disable control per color channel, preserving signal integrity up to 5.75MHz. Use Value: Eliminates three separate op amps and associated passive components, reducing BOM count by 65% while maintaining 0.06% differential gain error. | Use Scenario: Conditioning analog sensor outputs before digitization in a 100MSPS pipeline ADC used in ultrasound or radar front-ends. IC Role / Device Role / Timing Role: High-slew-rate, low-noise driver providing 2VPP signal to ADC input with <8ns settling to 0.1%. Use Value: Enables full utilization of ADC ENOB at 50MHz input frequencies with –68dBc 2nd-harmonic distortion at RL ≥500Ω. |
| Portable Instrument Signal Chain | Active Filter for Imaging Channels |
Use Scenario: Battery-powered handheld oscilloscope front-end where power efficiency and signal fidelity are both critical. IC Role / Device Role / Timing Role: Single-supply +5V amplifier driving multiplexer-selected sensor inputs with dynamic channel disabling. Use Value: Reduces active power consumption from 16.5mA to 0.9mA during idle periods via DIS pin control, extending battery life by 3.2×. | Use Scenario: Multi-channel medical imaging system requiring matched gain, phase, and settling across parallel X-ray detector signal paths. IC Role / Device Role / Timing Role: Triple-channel active filter stage implementing 2nd-order low-pass response with identical component values per channel. Use Value: Guarantees <0.1° inter-channel phase mismatch at 10MHz, essential for coherent beamforming in digital radiography. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-channel wideband op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA3691DBVR | Current-feedback architecture; higher 350MHz bandwidth but requires external compensation; no disable function | Lacks per-channel shutdown; unsuitable for power-gated video systems | Select when maximum bandwidth is prioritized over power control and ease of use |
| LMH6703MA/NOPB | Single-channel, 1.8GHz GBW; 3000V/µs slew rate; no disable; higher 10.5mA quiescent current | Requires three separate packages and routing; increases layout complexity and cost | Select when ultra-high bandwidth (>1GHz) is required and board space is not constrained |
Compared with OPA3691DBVR and LMH6703MA/NOPB, the OPA3690ID uniquely combines triple-channel integration, per-channel disable, and voltage-feedback simplicity - making it the only option that satisfies broadcast video fidelity, power gating, and space constraints simultaneously.
Availability
OPA3690ID is available at Aetrix Electronics and suitable for RGB video line driving, high-speed ADC input buffering, and portable instrument signal chain applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for OPA3690ID 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 company specializing in analog and embedded processing technologies, with leadership in high-performance op amps, data converters, and power management ICs.
The OPA3690ID belongs to TI's precision high-speed op amp product line, engineered specifically for broadcast video, medical imaging, and test equipment where signal fidelity, channel matching, and power efficiency are co-critical design requirements.
FAQ
What is the maximum operating supply voltage for the OPA3690ID?
The OPA3690ID supports a maximum dual-supply voltage of ±6.0V and a maximum single-supply voltage of +12V. Absolute maximum ratings specify ±6.5V on the power supply pins; exceeding this risks permanent damage. For reliable operation in industrial environments, TI recommends staying within the specified operating range of ±2.5V to ±6V (dual) or +5V to +12V (single), with derating above +85°C ambient.
Does the OPA3690ID require external compensation for unity-gain stability?
No, the OPA3690ID is internally compensated for unity-gain stability across its full operating temperature range (–40°C to +85°C). Unlike many wideband op amps, it does not require external feedback capacitors or resistor networks to maintain stability at G = +1. This simplifies PCB layout and eliminates phase-margin tuning, making it suitable for direct-coupled video line driver configurations without risk of oscillation.
How does the disable function behave on the OPA3690ID?
Each channel of the OPA3690ID has an independent active-low disable pin (DIS A/B/C). When pulled LOW, the corresponding amplifier shuts down, reducing its supply current to <300µA/ch and placing its output in a high-impedance state within 200ns. The output capacitance in disable mode is only 4pF, minimizing loading on downstream circuits. Leaving the pin open or holding it HIGH maintains normal operation with 5.5mA/ch quiescent current.
Can the OPA3690ID drive a 75Ω video load directly?
Yes, the OPA3690ID can drive a 75Ω video load directly while maintaining broadcast-grade performance. At G = +2 and RL = 75Ω, it delivers ±3.9V output swing on ±5V supplies with 0.06% differential gain and 0.01° differential phase error - fully compliant with SMPTE 259M and ITU-R BT.601 standards. No series termination resistor is needed, though a 75Ω back-termination may be added at the display end for optimal cable matching.
What is the thermal resistance of the OPA3690ID in SO-16 package?
The OPA3690ID in SO-16 (D) package has a junction-to-ambient thermal resistance (θJA) of 100°C/W under standard JEDEC test conditions (2s2p board). This value assumes proper PCB copper pour and thermal vias beneath the exposed pad (if present) - though the SO-16 variant has no exposed thermal pad. For continuous operation at maximum rated output current, ambient temperature should be limited to ≤+70°C to keep junction temperature below +125°C.
OPA3690ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 3
- Output Type:
- Differential
- 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:
- 16.5mA
- 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:
- 16-SOIC
OPA3690ID FAQ
1.How can I place an order for OPA3690ID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA3690ID 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 OPA3690ID reliable?
The price and inventory of OPA3690ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA3690ID is usually 5 days.
3.What payment methods are accepted for OPA3690ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA3690ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA3690ID?
OPA3690ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA3690ID 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 OPA3690ID?
For technical support, including OPA3690ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA3690ID requirements.
6.How does Aetrix verify that OPA3690ID is sourced from the original manufacturer or authorized distributors?
All OPA3690ID 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 OPA3690ID meets industry standards.
7.What is the process for return or replacement of OPA3690ID?
All OPA3690ID units undergo pre-shipment inspection (PSI). If there is an issue with OPA3690ID, 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 OPA3690ID part is unused and in its original packaging.
Return procedure for OPA3690ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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