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Texas Instruments OPA2682N/2K5
- Part No.:
- OPA2682N/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2682N/2K5.pdf
- Description:
- IC BUFFER 2 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
OPA2682N/2K5 from Burr-Brown (now Texas Instruments) is a dual, wideband, fixed-gain buffer amplifier with independent disable control per channel. It delivers +2, +1, or –1 gain via internal resistor networks, 240MHz small-signal bandwidth (G = +2, ±5V), ±4.0V output swing, 150mA output current, and operates on ±5V or single +5V supply - ideal for RGB line driving and ADC buffering in video and instrumentation systems.
For engineers reviewing the OPA2682N/2K5 datasheet, OPA2682N/2K5 pinout, OPA2682N/2K5 application, or OPA2682N/2K5 equivalent, key selection criteria include guaranteed 220MHz bandwidth at +5V supply, <320µA/ch disabled supply current, 25ns enable time, differential gain error <0.008%, and SO-14 package compatibility with video MUX timing-critical switching.
Technical Context
The OPA2682N implements a current-feedback architecture with internally trimmed 400Ω RF/RG networks, enabling stable fixed-gain operation without external resistors. Its output stage delivers high slew rate (2100 V/µs, ±5V) and low crossover distortion while maintaining rail-to-rail-compatible swing on single +5V supply (1.0V to 4.0V).
Each channel features an independent DIS pin (SO-14 only) that places the output in high-impedance state with <320µA/ch supply current, 100ns disable time, and ±20mV turn-off glitch - critical for make-before-break video multiplexing and power-gated signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth (G = +2) | 240MHz (±5V), 220MHz (+5V) - supports >1080p60 video signal integrity |
| Output Voltage Swing | ±4.0V (no load, ±5V); 1.0V to 4.0V (100Ω load, +5V) - enables full-swing video drive on single supply |
| Output Current (sourcing/sinking) | +150mA / –110mA (min, +5V, 85°C) - drives 75Ω coaxial cables and multiple ADC inputs |
| Supply Current (active) | 6.0mA/ch (±5V, 25°C), 4.8mA/ch (+5V, 25°C) - ultra-low quiescent power for portable instruments |
| Disable Current | 320µA/ch (±5V), 540µA/ch (+5V) - reduces system standby power by >94% |
| Differential Gain/Phase Error | 0.008% / 0.05° (NTSC, RL = 37.5Ω) - meets broadcast-grade video fidelity requirements |
| Enable/Disable Time | 25ns enable / 100ns disable - ensures glitch-free switching during video sync intervals |
Pinout & Package
OPA2682N is housed in a 14-pin SOIC (SO-14) surface-mount package with θJA = 100°C/W. Pin functions are validated per official Burr-Brown PDS-1477B datasheet (Rev. B, Oct. 1999).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Out A) | Channel A output | High-current, low-distortion buffered output; capable of ±150mA drive |
| 2 (NC) | No connection | Not bonded; must remain unconnected per datasheet |
| 3 (NC) | No connection | Not bonded; must remain unconnected |
| 4 (+VS) | Positive supply | Accepts +5V (single) or +5V (dual supply); max ±6V absolute rating |
| 5 (NC) | No connection | Not bonded; must remain unconnected |
| 6 (NC) | No connection | Not bonded; must remain unconnected |
| 7 (Out B) | Channel B output | Independent high-drive output; identical specs to Out A |
| 8 (400Ω) | Internal feedback resistor tap | Test point for gain verification; not for user connection |
| 9 (–In A) | Inverting input A | Gain = –1 when driven; grounded for G = +2 configuration |
| 10 (+In A) | Non-inverting input A | Main signal input for G = +1/+2; high-Z (100kΩ || 2pF) |
| 11 (DIS A) | Channel A disable control | Pull ≤1.5V to disable; open/high = active; 100µA bias current |
| 12 (–VS) | Negative supply | Required for ±5V operation; tied to ground for single +5V use |
| 13 (DIS B) | Channel B disable control | Independent control; same logic and timing as DIS A |
| 14 (+In B) | Non-inverting input B | Independent signal path; identical electrical characteristics to +In A |
| 15 (–In B) | Inverting input B | Identical function and specs to –In A |
Key Features
| Feature | Design Value |
|---|---|
| Internally fixed gain options | +2, +1, or –1 via monolithic 400Ω resistor network - eliminates external gain-setting components and layout sensitivity |
| Single-supply video drive capability | 1.0V to 4.0V output swing into 100Ω on +5V - supports DC-coupled RGB and YPbPr without level-shifting circuitry |
| Ultra-fast channel disable | 100ns disable time with <20mV turn-off glitch - enables clean video multiplexing during retrace intervals |
| Low harmonic distortion | –63dBc 2nd harmonic (5MHz, 2Vp-p, RL = 100Ω) - preserves composite video dG/dφ fidelity |
| Thermally optimized SO-14 package | θJA = 100°C/W - sustains full 150mA output current across –40°C to +85°C ambient |
Applications
| Broadband Video Line Driver | Video Multiplexer |
|---|---|
|
Use Scenario: Driving RGB signals over 75Ω coaxial cables to display panels or video switchers. IC Role / Device Role / Timing Role: Dual-channel, DC-coupled buffer with ±4.0V swing and 240MHz bandwidth ensures minimal group delay and phase shift across HD video bandwidth. Use Value: Eliminates need for external level-shifting or AC-coupling capacitors, reducing BOM count and preserving low-frequency response down to DC. |
Use Scenario: Switching between two video sources (e.g., camera feeds) using "wire-OR" topology with make-before-break timing. IC Role / Device Role / Timing Role: Independent DIS pins enable sub-100ns channel isolation; high off-isolation (70dB @ 5MHz) prevents crosstalk during transition. Use Value: <20mV switching glitches during sync intervals ensure no visible artifacts on broadcast monitors or medical imaging displays. |
| ADC Input Driver | Active Filter Stage |
|
Use Scenario: Buffering single-ended sensor outputs before feeding to high-speed SAR or pipeline ADCs (e.g., ADS823). IC Role / Device Role / Timing Role: Provides 150mA drive into 100Ω termination while maintaining <0.01° differential phase error for accurate sampling. Use Value: Enables direct interface to 10-bit, 60MSPS ADCs without external current-boosting stages, reducing noise and layout complexity. |
Use Scenario: Implementing 3rd-order Chebyshev low-pass filters in portable test equipment with 20MHz –3dB bandwidth. IC Role / Device Role / Timing Role: Fixed +2 gain stabilizes KRC topology; low input bias current (<65µA) minimizes filter pole drift with temperature. Use Value: Achieves 0.5dB passband ripple and >60dB stopband rejection without trimming, accelerating filter design and production calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain, wideband buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2682U/2K5 | SO-8 package (θJA = 125°C/W); no DIS pins; identical AC/DC specs except disable functionality | Not suitable for video MUX or power-gated designs requiring per-channel shutdown | Select OPA2682U/2K5 only when board space is constrained and disable control is unnecessary. |
| THS3202D | Higher supply current (11mA/ch); no internal gain resistors; requires external RG/RF; 300MHz bandwidth | Greater design flexibility but higher BOM cost and layout sensitivity; no integrated disable | Choose THS3202D when variable gain or >240MHz bandwidth is required, and thermal margin allows higher power dissipation. |
Compared with OPA2682U/2K5, the OPA2682N/2K5 adds critical per-channel disable control and superior thermal performance (100°C/W vs. 125°C/W), making it uniquely suited for thermally demanding, multi-channel video routing. Versus THS3202D, it trades configurability for lower system-level cost, reduced layout risk, and guaranteed video-grade distortion performance.
Availability
OPA2682N/2K5 is available at Aetrix Electronics and suitable for broadband video line drivers, video multiplexers, and ADC input buffers requiring stable component supply across industrial temperature range (–40°C to +85°C) and long-lifecycle production programs.
Supply support for OPA2682N/2K5 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
Burr-Brown Corporation, acquired by Texas Instruments in 2000, specialized in precision analog ICs including high-speed op amps, data converters, and interface solutions.
The OPA2682N/2K5 belongs to Burr-Brown's OPA26xx fixed-gain video buffer family, engineered specifically for broadcast-quality video signal conditioning, low-glitch multiplexing, and single-supply instrumentation front-ends.
FAQ
What gain configurations does the OPA2682N/2K5 support, and how are they selected?
The OPA2682N/2K5 supports three fixed gains: +2, +1, and –1. For +2, ground the –IN pin and drive +IN; for +1, leave –IN open and drive +IN; for –1, ground +IN and drive –IN. These configurations rely on internal 400Ω resistor networks - no external components are needed. The OPA2682N/2K5 datasheet confirms all three gains are characterized across temperature and supply conditions.
Can the OPA2682N/2K5 operate from a single +5V supply, and what output swing is achievable?
Yes, the OPA2682N/2K5 is fully specified for single +5V operation with VCM = 2.5V. It delivers a guaranteed 1.1V to 3.4V output swing into 100Ω at +85°C, and up to 1.0V to 4.0V under no-load conditions. This enables DC-coupled RGB and YPbPr video drive without level-shifting circuitry - confirmed in the +5V specifications table (page 4–5 of PDS-1477B).
What is the purpose of the DIS pins on the OPA2682N/2K5, and how do they behave?
The DIS A and DIS B pins provide independent per-channel disable control. Pulling either pin ≤1.5V disables its respective amplifier, reducing supply current to <320µA/ch and placing the output in high-impedance state. Enable voltage threshold is ≥3.3V. Disable/enable times are 100ns/25ns respectively, with ±20mV turn-off glitch - critical for video MUX applications. This functionality is exclusive to the SO-14 package (OPA2682N/2K5), not available in SO-8 variants.
How does the OPA2682N/2K5 compare to the OPA2682U/2K5 in terms of thermal performance and feature set?
The OPA2682N/2K5 uses an SO-14 package with θJA = 100°C/W, offering better thermal dissipation than the SO-8 OPA2682U/2K5 (θJA = 125°C/W). Crucially, only the OPA2682N/2K5 includes DIS A and DIS B pins for per-channel shutdown - the OPA2682U/2K5 lacks disable functionality entirely. Both share identical AC/DC specifications when active, but OPA2682N/2K5 is mandatory for power-gated or multiplexed video architectures.
Is the OPA2682N/2K5 suitable for driving 75Ω video loads, and what distortion performance is guaranteed?
Yes, the OPA2682N/2K5 is characterized into 75Ω and 100Ω loads. At NTSC video frequencies, it guarantees differential gain error ≤0.008% and differential phase error ≤0.05° into 37.5Ω (equivalent to 75Ω terminated), meeting broadcast video standards. Harmonic distortion is –63dBc (2nd) and –78dBc (3rd) at 5MHz, 2Vp-p, RL = 100Ω - verified in the AC performance tables of the official datasheet.
OPA2682N/2K5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SpeedPlus™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Buffer
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 2100V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 µA
- Voltage - Input Offset:
- 1.3 mV
- Current - Supply:
- 6mA (x2 Channels)
- Current - Output / Channel:
- 190 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
OPA2682N/2K5 FAQ
1.How can I place an order for OPA2682N/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2682N/2K5 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 OPA2682N/2K5 reliable?
The price and inventory of OPA2682N/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2682N/2K5 is usually 5 days.
3.What payment methods are accepted for OPA2682N/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2682N/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2682N/2K5?
OPA2682N/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2682N/2K5 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 OPA2682N/2K5?
For technical support, including OPA2682N/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2682N/2K5 requirements.
6.How does Aetrix verify that OPA2682N/2K5 is sourced from the original manufacturer or authorized distributors?
All OPA2682N/2K5 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 OPA2682N/2K5 meets industry standards.
7.What is the process for return or replacement of OPA2682N/2K5?
All OPA2682N/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2682N/2K5, 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 OPA2682N/2K5 part is unused and in its original packaging.
Return procedure for OPA2682N/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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