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Texas Instruments OPA2683IDCNRG4
- Part No.:
- OPA2683IDCNRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8
- Datasheet:
-
OPA2683IDCNRG4.pdf
- Description:
- IC OPAMP CFA 2 CIRCUIT SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:4,881
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Product details
Overview
OPA2683IDCNRG4 from Texas Instruments is a dual, very low-power, current-feedback operational amplifier optimized for high-speed, low-distortion video and communication signal conditioning. It delivers 150MHz bandwidth at G = +2, –65dBc harmonic distortion at 5MHz, 110mA output drive, and operates from ±2.5V to ±6V or +5V to +12V single supply - enabling use in professional camera front-ends and DSL line drivers.
For engineers reviewing the OPA2683IDCNRG4 datasheet, OPA2683IDCNRG4 pinout, OPA2683IDCNRG4 application, or OPA2683IDCNRG4 equivalent, key selection criteria include its CFBPLUS architecture for gain-stable bandwidth, shutdown capability (MSOP-10 only), differential input impedance linearity, and verified NTSC video performance (0.13% differential gain, 0.06° phase).
Technical Context
The OPA2683IDCNRG4 implements a patented CFBPLUS architecture with an internally closed-loop input buffer stage that linearizes inverting-input impedance, enabling exceptional bandwidth retention across gains up to +20 and reduced harmonic distortion versus conventional low-power CFB amplifiers. Its transimpedance gain exceeds 700kΩ, and inverting input resistance is 5.0Ω (typ) - critical for stable feedback network design.
This dual-channel amplifier supports both bipolar (±2.5V to ±6V) and single-supply (+5V to +12V) operation with rail-to-rail output swing capability (±4VPP on ±5V), 1.9mA total quiescent current, and fast enable time (40ns). The MSOP-10 variant includes independent channel disable pins (DIS A/DIS B) for power-gating control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth (G = +2) | 150MHz - enables full HD video signal amplification without gain-dependent roll-off. |
| Harmonic Distortion (5MHz, 2VPP) | < –65dBc (2nd/3rd) - meets broadcast-grade NTSC/PAL video fidelity requirements. |
| Output Current (Sourcing) | 110mA min - drives 100Ω video loads or doubly terminated 50Ω cables with minimal headroom loss. |
| Supply Current (Total) | 1.9mA max at ±5V - supports battery-powered portable imaging systems and multi-channel low-power designs. |
| Input Voltage Noise | 4.4nV/√Hz (f > 1MHz) - preserves SNR in wideband signal chains where noise dominates at high frequencies. |
| Disable Supply Current | –360µA max (both channels) - reduces system standby power by >99% when disabled. |
| Differential Gain/Phase | 0.13% / 0.06° (NTSC, RL = 150Ω) - qualifies for professional broadcast video driver applications. |
Pinout & Package
SOT-23-8 package (DCN suffix), 8-pin surface-mount, 2.9mm × 1.6mm footprint, 0.65mm pitch. Thermal resistance θJA = 150°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Channel A output | Low-impedance voltage source capable of ±4V swing into 1kΩ and 110mA sourcing. |
| 2 (–IN A) | Channel A inverting input | 5.0Ω DC resistance; low, linearized impedance enables stable high-frequency feedback. |
| 3 (+IN A) | Channel A noninverting input | 50kΩ || 2pF input impedance; common-mode range extends to ±3.75V on ±5V supplies. |
| 4 (–VS) | Negative supply rail | Supports bipolar operation down to –6V; internal biasing maintains performance across ±2.5V to ±6V range. |
| 5 (+VS) | Positive supply rail | Accepts +5V to +12V single supply or +6V max in dual-supply mode. |
| 6 (+IN B) | Channel B noninverting input | Electrically isolated from Channel A; supports independent differential or summing configurations. |
| 7 (–IN B) | Channel B inverting input | Matches Channel A's 5.0Ω inverting input resistance and linearity for matched channel performance. |
| 8 (OUT B) | Channel B output | Identical AC/DC specs to OUT A; channel-to-channel isolation ≥70dB at 5MHz ensures crosstalk-free multi-channel operation. |
Key Features
| Feature | Design Value |
|---|---|
| CFBPLUS architecture | Internally buffered inverting input delivers near-ideal current-feedback behavior: bandwidth varies <5% from G=+2 to G=+20. |
| Gain-stable bandwidth | Retains >80MHz bandwidth even at G=+10 - eliminates need for gain-dependent feedback resistor recalibration. |
| Low-distortion video drive | 0.13% differential gain / 0.06° phase error meets SMPTE 253M and ITU-R BT.601 broadcast standards. |
| Single-supply compatibility | Operates from +5V with 1.2V input headroom and 0.9V output headroom - enables direct interface with ADCs/DACs in +5V systems. |
| High channel isolation | 70dB crosstalk at 5MHz allows simultaneous processing of independent high-frequency signals without interference. |
Applications
| Professional Broadcast Video Drivers | Low-Power Active Filters |
|---|---|
Use Scenario: Driving composite video signals from FPGA-based video processors to multiple SDI or analog monitors in field-deployable camera systems. IC Role / Device Role / Timing Role: Dual-channel voltage buffer and level shifter with precise differential gain/phase matching across channels. Use Value: Maintains 0.13% differential gain and 0.06° phase over temperature, eliminating manual calibration in portable broadcast gear. | Use Scenario: Implementing 4th-order elliptic low-pass filters in battery-powered medical sensor front-ends requiring <1.9mA total quiescent current. IC Role / Device Role / Timing Role: Dual CFB op amp configured as cascaded biquad stages with programmable cutoff frequency via external resistors. Use Value: Delivers 150MHz bandwidth at G=+2 while consuming <2mA - enables filter tuning without sacrificing speed or power budget. |
| Short-Loop ADSL CO Drivers | Differential ADC Input Drivers |
Use Scenario: Transmitting upstream/downstream DSL signals over twisted-pair lines in central office line cards with tight thermal constraints. IC Role / Device Role / Timing Role: High-output-current line driver with fast slew rate (400V/µs min) and low distortion for 1–30MHz ADSL2+ spectral bands. Use Value: Sustains >110mA output into 100Ω loads while maintaining –65dBc THD - improves SNR margin in noisy telco environments. | Use Scenario: Conditioning single-ended sensor outputs into fully differential inputs of 16-bit SAR ADCs in industrial data acquisition modules. IC Role / Device Role / Timing Role: Dual-channel I/V converter and gain stage providing matched amplitude/phase response to ADC differential inputs. Use Value: 70dB channel isolation and <1.5mV offset ensure <0.001% gain error and <1LSB integral nonlinearity degradation in precision measurement paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2684IDR | Higher 220MHz bandwidth at G=+2, 2.5mA supply current, SO-8 only - no shutdown function. | Preferred for higher-bandwidth video reconstruction or RF IF amplification where power is secondary. | Select OPA2684IDR when >200MHz bandwidth is required and 1.9mA quiescent current is not critical. |
| OPA2691IDGKR | 450V/µs slew rate, 350MHz bandwidth at G=+2, 5.3mA supply current, MSOP-10 with shutdown - higher power/performance tradeoff. | Used in high-speed test equipment and optical receiver TIA post-amplifiers needing faster transient response. | Choose OPA2691IDGKR when slew rate >400V/µs and bandwidth >300MHz justify 2.8× higher supply current. |
Compared with OPA2684IDR and OPA2691IDGKR, the OPA2683IDCNRG4 uniquely balances ultra-low 1.9mA power, 150MHz bandwidth, and broadcast-grade video linearity - making it optimal for portable, thermally constrained, multi-channel video and DSL systems where efficiency and fidelity are co-prioritized.
Availability
OPA2683IDCNRG4 is available at Aetrix Electronics and suitable for professional broadcast video drivers, low-power active filters, short-loop ADSL CO drivers, and differential ADC input drivers requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for OPA2683IDCNRG4 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 OPA2683IDCNRG4 belongs to TI's CFBPLUS current-feedback op amp product line, designed specifically for high-speed, low-power signal conditioning in video, communications, and instrumentation systems where gain stability and distortion performance are critical.
FAQ
What is the maximum operating supply voltage for the OPA2683IDCNRG4?
The OPA2683IDCNRG4 supports a maximum bipolar supply of ±6V and a maximum single-supply voltage of +12V. Absolute maximum ratings specify ±6.5V on the power rails; exceeding these limits risks permanent damage. Operation at ±6V or +12V is within specification but requires verification of thermal dissipation given θJA = 150°C/W for the SOT-23-8 package. The OPA2683IDCNRG4 maintains specified AC performance across ±2.5V to ±6V and +5V to +12V ranges.
Does the OPA2683IDCNRG4 support shutdown functionality?
No, the OPA2683IDCNRG4 does not support shutdown. Shutdown is only available on the MSOP-10 variants (e.g., OPA2683IDGST, OPA2683IDGSR), which feature dedicated DIS A and DIS B pins. The OPA2683IDCNRG4 is packaged in SOT-23-8 (DCN), which lacks disable pins. For power-gating applications, external FET switching of the supply rails or use of a pin-compatible MSOP-10 variant is required. The OPA2683IDCNRG4 draws 1.9mA continuously under normal operation.
What is the inverting input resistance of the OPA2683IDCNRG4 and why does it matter?
The OPA2683IDCNRG4 has a nominal inverting input resistance (RI) of 5.0Ω (typ) in open-loop DC conditions. This ultra-low, highly linear value is a direct result of its CFBPLUS architecture and enables predictable, stable feedback network design - unlike voltage-feedback op amps where inverting input impedance varies with gain. It ensures consistent bandwidth and phase margin across gain settings and simplifies layout by minimizing parasitic sensitivity. This parameter is explicitly measured and guaranteed in the OPA2683IDCNRG4 datasheet.
Can the OPA2683IDCNRG4 drive a 50Ω doubly-terminated cable?
Yes, the OPA2683IDCNRG4 can drive a 50Ω doubly-terminated cable. With ±4VPP output swing on ±5V supplies and 110mA sourcing capability, it delivers >8dBm into a matched 50Ω load. Its closed-loop output impedance is 0.007Ω (typ) at 100kHz, ensuring minimal signal reflection and flat frequency response. Performance validation includes NTSC video testing into 150Ω loads and large-signal bandwidth measurements into 100Ω - confirming robustness for 50Ω transmission line driving. The OPA2683IDCNRG4 achieves this while consuming only 1.9mA total supply current.
How does the OPA2683IDCNRG4 achieve gain-stable bandwidth?
The OPA2683IDCNRG4 achieves gain-stable bandwidth through its patented CFBPLUS architecture, which integrates a closed-loop input buffer stage that linearizes the inverting input impedance to ~5Ω across frequency and gain. This eliminates the gain-dependent pole shift seen in conventional CFB amplifiers, allowing bandwidth to remain >80MHz from G=+2 to G=+10. Measured data shows only 150MHz → 94MHz reduction from G=+2 to G=+10 - far less than typical 50%+ drop. This behavior is intrinsic to the OPA2683IDCNRG4 silicon design and verified across temperature and supply variations.
OPA2683IDCNRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 2
- Output Type:
- Differential
- Slew Rate:
- 540V/µs
- Gain Bandwidth Product:
- 200 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3 µA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 1.88mA (x2 Channels)
- Current - Output / Channel:
- 150 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-23-8
OPA2683IDCNRG4 FAQ
1.How can I place an order for OPA2683IDCNRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2683IDCNRG4 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 OPA2683IDCNRG4 reliable?
The price and inventory of OPA2683IDCNRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2683IDCNRG4 is usually 5 days.
3.What payment methods are accepted for OPA2683IDCNRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2683IDCNRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2683IDCNRG4?
OPA2683IDCNRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2683IDCNRG4 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 OPA2683IDCNRG4?
For technical support, including OPA2683IDCNRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2683IDCNRG4 requirements.
6.How does Aetrix verify that OPA2683IDCNRG4 is sourced from the original manufacturer or authorized distributors?
All OPA2683IDCNRG4 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 OPA2683IDCNRG4 meets industry standards.
7.What is the process for return or replacement of OPA2683IDCNRG4?
All OPA2683IDCNRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2683IDCNRG4, 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 OPA2683IDCNRG4 part is unused and in its original packaging.
Return procedure for OPA2683IDCNRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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