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Texas Instruments OPA683IDR
- Part No.:
- OPA683IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA683IDR.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,207
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Product details
Overview
OPA683IDR from Texas Instruments is a very low-power, current-feedback operational amplifier with disable control, designed for high-speed analog signal conditioning in space- and power-constrained systems. It delivers 150MHz bandwidth at G = +2, 110mA output drive, < –69dBc harmonic distortion at 5MHz, and operates from ±2.5V to ±6V or single +5V to +12V supplies - enabling use in broadcast video drivers and ADC input stages.
For engineers reviewing the OPA683IDR datasheet, OPA683IDR pinout, OPA683IDR application, or OPA683IDR equivalent, key selection criteria include its CFBplus architecture for gain-independent bandwidth, 40ns enable time, 100µA shutdown current, and SO-8 package compatibility with thermal design constraints in portable instrumentation and multi-channel summing systems.
Technical Context
The OPA683IDR implements a CFBplus architecture featuring an internally closed-loop input buffer stage that linearizes inverting-input impedance, enabling exceptional bandwidth retention up to G = +100 and reduced harmonic distortion versus conventional low-power CFB amplifiers. Its transimpedance gain of 700kΩ (min) and 4.5Ω inverting-input resistance define its current-sensing behavior.
It supports dual-supply (±2.5V to ±6V) and single-supply (+5V to +12V) operation with rail-to-rail output swing capability (±4VPP on ±5V), 1.2V input headroom, and precise 0.94mA quiescent current trim at 25°C - ensuring stable performance across industrial temperature range (–40°C to +85°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth (G = +2) | 150MHz min - enables high-fidelity video and RF signal amplification without gain-dependent roll-off |
| Output Current (sourcing) | 150mA min - drives 100Ω loads with ±4VPP swing on ±5V supplies, supporting doubly-terminated video lines |
| Harmonic Distortion (2nd, 5MHz) | –63dBc max (RL = 100Ω) - meets broadcast video differential gain/phase specs (0.06%/0.03°) |
| Supply Current (active) | 0.94mA typ - ultra-low power consumption ideal for battery-powered or thermally sensitive multi-channel systems |
| Shutdown Current | 100µA typ - reduces system standby power while maintaining high-impedance I/O pins during disable |
| Enable Time | 40ns typ - supports fast-switching applications such as multiplexed sensor front-ends or burst-mode signal paths |
| Input Voltage Noise | 4.4nV/√Hz typ - preserves SNR in precision wideband gain stages preceding ADCs |
Pinout & Package
OPA683IDR is packaged in an SO-8 (D) surface-mount package with exposed pad for thermal enhancement, rated for –40°C to +85°C operation. Pin 1 is marked by a dot or beveled edge; pin numbering follows standard SOIC convention (counterclockwise from top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connection | Internally unused; must remain unconnected per TI specification |
| 2 (Inverting Input) | Inverting Input Node | Low-impedance current-sensing node (4.5Ω typ); sets feedback path for CFB operation |
| 3 (Noninverting Input) | Noninverting Input Node | High-impedance voltage reference point (50kΩ || 2pF); establishes common-mode bias |
| 4 (–VS) | Negative Supply Rail | Connects to negative supply (–2.5V to –6V) or ground in single-supply configurations |
| 5 (DIS) | Disable Control Input | Active-low logic input; <1.5V disables amplifier, >3.4V enables normal operation |
| 6 (+VS) | Positive Supply Rail | Connects to positive supply (+2.5V to +6V) or +5V/+12V in single-supply mode |
| 7 (Output) | Amplifier Output | Capable of ±4VPP swing into 1kΩ, sourcing/sinking >100mA with <0.01Ω closed-loop output impedance |
| 8 (NC) | No Connection | Internally unused; must remain unconnected per TI specification |
Key Features
| Feature | Design Value |
|---|---|
| CFBplus Architecture | Internally buffered inverting input yields linearized 4.5Ω impedance, enabling near-constant bandwidth from G = +1 to +100 |
| Gain-Independent Bandwidth | Retains >90MHz bandwidth even at G = +10 - eliminates need for gain-compensated layout in multi-gain systems |
| Ultra-Low Power Operation | 0.94mA quiescent current trimmed at 25°C with <±12µV/°C drift - ensures predictable thermal budget in dense PCB layouts |
| Fast Enable/Disable | 40ns enable and 60ms disable times allow dynamic power gating in time-multiplexed signal chains |
| Single-Supply Flexibility | Operates from +5V to +12V with 1.2V input headroom and 1.0V output headroom - simplifies biasing in +5V-only systems |
Applications
| Low-Power Broadcast Video Drivers | ADC Input Drivers |
|---|---|
Use Scenario: Driving composite NTSC video signals over 150Ω coaxial cables in portable studio cameras. IC Role / Device Role / Timing Role: Current-feedback amplifier configured for G = +2 with DC coupling and 50Ω source/load matching. Use Value: Delivers 0.06% differential gain and 0.03° differential phase error while consuming only 0.94mA - extending battery life without compromising broadcast compliance. | Use Scenario: Buffering high-frequency sensor outputs (e.g., ultrasound, IF sampling) into 12–16-bit SAR or pipeline ADCs. IC Role / Device Role / Timing Role: Wideband gain stage with low 4.4nV/√Hz input noise and 150MHz bandwidth to preserve SNR and settle within ADC aperture time. Use Value: Enables full-scale 5MHz sine-wave input with <–63dBc 2nd-harmonic distortion, directly meeting ENOB requirements for 14-bit conversion. |
| Equalizing Filters | Short Loop ADSL CO Drivers |
Use Scenario: Compensating frequency-dependent loss in twisted-pair telecom lines using active peaking networks. IC Role / Device Role / Timing Role: Inverting configuration with adjustable RF/RG to inject controlled gain peaking at 1–10MHz. Use Value: Supports >72MHz large-signal bandwidth at G = +20 with minimal distortion - allowing precise equalization up to ADSL2+ frequencies. | Use Scenario: Transmitting upstream/downstream DSL signals from central office line cards into 100Ω twisted-pair infrastructure. IC Role / Device Role / Timing Role: High-output-current driver (150mA) with ±4VPP swing, operating from ±5V rails with fast slew rate (540V/µs). Use Value: Meets ITU-T G.992.1 spectral mask requirements while dissipating <300mW - reducing thermal load in multi-port DSLAM modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA684IDR | Higher 200MHz bandwidth at G = +2; 1.3mA quiescent current; improved harmonic distortion (–72dBc @ 5MHz) | Better suited for >100MHz ADC front-ends and high-fidelity SAW post-amplifiers where distortion is critical | Select OPA684IDR when lowest possible distortion is required and 0.36mA higher supply current is acceptable |
| OPA2683IDR | Dual-channel version in SO-8; identical per-channel specs but shared thermal footprint; 1.88mA total quiescent current | Ideal for stereo audio, dual ADC inputs, or differential signaling where channel matching matters | Choose OPA2683IDR for space-constrained dual-channel designs requiring matched AC performance and timing |
Compared with OPA683IDR, OPA684IDR trades 0.36mA higher supply current for significantly lower distortion and wider bandwidth, while OPA2683IDR provides dual-channel integration at the cost of doubled thermal dissipation - making OPA683IDR optimal for single-channel, ultra-low-power, cost-sensitive video and communications applications.
Availability
OPA683IDR is available at Aetrix Electronics and suitable for low-power broadcast video drivers, ADC input stages, equalizing filters, and short-loop ADSL CO drivers requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for OPA683IDR 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 OPA683IDR belongs to TI's CFBplus current-feedback op amp product line, engineered specifically for wideband, low-power signal conditioning in video, communications, and test equipment where gain stability, speed, and efficiency are co-optimized.
FAQ
What is the maximum operating supply voltage for the OPA683IDR?
The OPA683IDR supports a maximum operating supply voltage of ±6V for dual-supply operation or +12V for single-supply operation, as specified in the Absolute Maximum Ratings table. Exceeding these limits risks permanent damage. The device is characterized over ±2.5V to ±6V and +5V to +12V ranges, with optimal performance achieved near ±5V or +5V nominal supplies.
Does the OPA683IDR support single-supply operation, and what are the input/output voltage limitations?
Yes, the OPA683IDR supports single-supply operation from +5V to +12V. With +5V supply, the input common-mode range extends from 1.1V to 3.9V (min), and the output swings from 0.8V to 4.2V (min) into 1kΩ. This 3.4VPP usable output range enables DC-coupled interfacing to mid-supply-biased ADCs or AC-coupled driving of 100Ω loads with 3VPP swing.
How does the CFBplus architecture of the OPA683IDR improve performance over traditional current-feedback amplifiers?
The CFBplus architecture in the OPA683IDR integrates an internally closed-loop input buffer that linearizes the inverting-input impedance to ~4.5Ω. This eliminates gain-dependent bandwidth degradation and reduces harmonic distortion - delivering 150MHz bandwidth at G = +2 and >90MHz even at G = +10, unlike earlier low-power CFB amplifiers whose bandwidth collapsed sharply above G = +5.
What is the function of the DIS pin on the OPA683IDR, and how should it be interfaced?
The DIS pin on the OPA683IDR is an active-low disable control. Pulling it LOW (<1.5V) reduces supply current to <100µA and places all I/O pins in high-impedance state. Leaving it open or pulling HIGH (>3.4V) enables normal operation. No external pull-up is required, but a 10kΩ pull-up to +VS ensures robust default-enable behavior in noisy environments.
Can the OPA683IDR drive a 50Ω doubly-terminated cable, and what output performance can be expected?
Yes, the OPA683IDR can drive a 50Ω doubly-terminated cable. With ±5V supplies, it delivers ±4VPP output swing into 100Ω (equivalent to 50Ω doubly-terminated), sourcing/sinking >100mA. At G = +2, this yields >8dBm output power with <–63dBc 2nd-harmonic distortion at 5MHz - satisfying broadcast video and ADSL line-driver spectral purity requirements.
OPA683IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 540V/µs
- Gain Bandwidth Product:
- 1.44 GHz
- -3db Bandwidth:
- 200 MHz
- Current - Input Bias:
- 3 µA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 940µA
- 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:
- 8-SOIC
OPA683IDR FAQ
1.How can I place an order for OPA683IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA683IDR 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 OPA683IDR reliable?
The price and inventory of OPA683IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA683IDR is usually 5 days.
3.What payment methods are accepted for OPA683IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA683IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA683IDR?
OPA683IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA683IDR 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 OPA683IDR?
For technical support, including OPA683IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA683IDR requirements.
6.How does Aetrix verify that OPA683IDR is sourced from the original manufacturer or authorized distributors?
All OPA683IDR 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 OPA683IDR meets industry standards.
7.What is the process for return or replacement of OPA683IDR?
All OPA683IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA683IDR, 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 OPA683IDR part is unused and in its original packaging.
Return procedure for OPA683IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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