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Texas Instruments OPA2683IDGST
- Part No.:
- OPA2683IDGST
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2683IDGST.pdf
- Description:
- IC OPAMP CFA 2 CIRCUIT 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,411
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Product details
Overview
OPA2683IDGST from Texas Instruments is a dual, very low-power, current-feedback operational amplifier in MSOP-10 package, delivering 150MHz bandwidth at G = +2, 110mA output current, and 1.9mA total supply current. It supports ±2.5V to ±6V dual-supply or +5V to +12V single-supply operation and is optimized for low-power broadcast video drivers and differential ADC input stages.
For engineers reviewing the OPA2683IDGST datasheet, OPA2683IDGST pinout, OPA2683IDGST application, or OPA2683IDGST equivalent, key selection criteria include its CFBPLUS architecture enabling stable bandwidth vs. gain, shutdown capability (MSOP-10 only), 70dB channel-to-channel isolation at 5MHz, and verified performance into 100Ω loads with ±4VPP swing on ±5V supplies.
Technical Context
The OPA2683IDGST implements a CFBPLUS architecture featuring an internally closed-loop input buffer stage that linearizes inverting-input impedance, reducing gain-dependent bandwidth roll-off and harmonic distortion. This design enables >80MHz bandwidth up to G = +10 and maintains <–65dBc 2nd-harmonic distortion at 5MHz.
Its dual-channel layout supports independent shutdown control (DIS A/DIS B pins), with 40ns enable time and 60ms disable time. The inverting input presents ~5Ω DC resistance, while noninverting input impedance is 50kΩ || 2pF - enabling precise feedback network design without parasitic interaction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (G = +2) | 150MHz min - ensures full NTSC/PAL video signal fidelity with margin for filter roll-off. |
| Output Current | 110mA min sourcing - drives two 150Ω video loads or one 75Ω load with headroom. |
| Supply Current | 1.9mA total max at ±5V - enables battery-powered portable instrumentation. |
| Input Voltage Noise | 4.4nV/√Hz max above 1MHz - preserves SNR in high-frequency signal chains. |
| Harmonic Distortion | <–65dBc 2nd-harmonic at 5MHz - meets broadcast video differential gain/phase specs (0.13% dG, 0.06° dP). |
| Channel Isolation | 70dB typ at 5MHz - prevents crosstalk in multichannel summing or dual ADC driver applications. |
| Shutdown Current | –360µA max per supply rail - reduces system standby power by >99% vs active mode. |
Pinout & Package
OPA2683IDGST is housed in a thermally enhanced MSOP-10 package (DGS designation), 3mm × 3mm, 0.5mm pitch, with exposed thermal pad for improved power dissipation (θJA = 140°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: –In A | Inverting input, Channel A | Low-impedance node (~5Ω) for feedback current sensing; requires stable RF termination. |
| 2: Out A | Output, Channel A | Capable of ±4VPP swing into 1kΩ; delivers 110mA sourcing current. |
| 3: +VS | Positive supply rail | Accepts +2.5V to +12V (single) or ±2.5V to ±6V (dual); internal biasing is supply-independent. |
| 4: Out B | Output, Channel B | Electrically isolated from Out A; 70dB crosstalk rejection at 5MHz. |
| 5: –In B | Inverting input, Channel B | Matched to Pin 1; enables synchronous dual-channel feedback networks. |
| 6: +In A | Noninverting input, Channel A | 50kΩ || 2pF impedance; sets common-mode range (±3.75V min). |
| 7: DIS A | Shutdown control, Channel A | Active-low; pulls supply current to µA range when ≤1.5V; 40ns enable delay. |
| 8: –VS | Negative supply rail | Required for dual-supply operation; supports –2.5V to –6V. |
| 9: DIS B | Shutdown control, Channel B | Independent of DIS A; allows asymmetric channel power gating. |
| 10: +In B | Noninverting input, Channel B | Matched to Pin 6; enables true differential input configurations with external resistors. |
Key Features
| Feature | Design Value |
|---|---|
| CFBPLUS architecture | Internally buffered inverting input yields near-constant bandwidth from G = +1 to +10 - eliminates iterative RF tuning across gains. |
| Dual independent shutdown | Separate DIS A/DIS B pins enable per-channel power management in portable systems without PCB layout changes. |
| Single-supply compatibility | Operates from +5V with 1.2V input headroom and 0.9V output headroom - supports rail-to-rail signal coupling via AC-coupled bias networks. |
| Video-optimized linearity | 0.13% differential gain / 0.06° differential phase error at NTSC frequencies - meets SMPTE 253M broadcast standards. |
| Thermally robust MSOP-10 | Exposed pad and 140°C/W θJA allow 150mW dissipation at +85°C ambient - sustains full output drive in compact enclosures. |
Applications
| Low-Power Broadcast Video Drivers | Professional Cameras |
|---|---|
Use Scenario: Driving composite video signals over 75Ω coaxial cable in portable camcorders and HDMI transmitters. IC Role / Device Role / Timing Role: Dual-channel voltage buffer with DC-coupled output stage and matched gain paths. Use Value: Delivers ±4VPP swing into 75Ω with 0.13% dG/0.06° dP - eliminates need for external reconstruction filters. | Use Scenario: Conditioning analog sensor outputs (CCD/CMOS) before digitization in multi-sensor camera heads. IC Role / Device Role / Timing Role: Differential ADC input driver with matched channel timing and 70dB isolation. Use Value: Maintains <1ps skew between channels and <–65dBc distortion at 5MHz - preserves image fidelity during high-speed readout. |
| Multichannel Summing Amplifiers | Differential ADC Input Drivers |
Use Scenario: Combining multiple audio or sensor signals in battery-powered data loggers with strict power budgets. IC Role / Device Role / Timing Role: Inverting summing node with low input impedance and high slew rate (400V/µs). Use Value: Supports >100kHz bandwidth across 4+ summed inputs without gain-dependent peaking - simplifies anti-aliasing design. | Use Scenario: Converting single-ended sensor outputs to balanced differential signals for 16-bit+ SAR or sigma-delta ADCs. IC Role / Device Role / Timing Role: Precision gain stage with matched input impedances and CMRR >52dB. Use Value: Achieves >90dB SFDR by rejecting common-mode noise on long traces - critical for EMI-prone industrial environments. |
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 |
|---|---|---|---|
| OPA2684IDGST | Higher 250MHz bandwidth at G = +2; 2.5mA supply current; no shutdown pins. | Targeted at higher-frequency video (HD-SDI) and RF IF stages where power is secondary to speed. | Select OPA2684IDGST when bandwidth >200MHz is required and shutdown functionality is unnecessary. |
| OPA2691IDGST | 500MHz bandwidth at G = +2; 5.3mA supply current; no shutdown; SO-8 or MSOP-10. | Designed for high-speed test equipment and optical receiver front-ends requiring ultra-wideband response. | Choose OPA2691IDGST for >400MHz small-signal bandwidth; avoid in battery-powered systems due to 2.8× higher quiescent current. |
Compared with OPA2684IDGST and OPA2691IDGST, the OPA2683IDGST uniquely balances 150MHz bandwidth, 1.9mA supply current, and dual-channel shutdown - making it the only option among the three suitable for portable, power-constrained, multichannel video systems requiring selective channel disabling.
Availability
OPA2683IDGST is available at Aetrix Electronics and suitable for low-power broadcast video drivers, professional cameras, multichannel summing amplifiers, and differential ADC input drivers requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for OPA2683IDGST 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 precision amplifiers, data converters, and power management ICs.
The OPA2683IDGST belongs to TI's CFBPLUS current-feedback op amp product line, engineered specifically for power-sensitive, wideband 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 OPA2683IDGST?
The OPA2683IDGST supports dual-supply operation from ±2.5V to ±6V and single-supply operation from +4V to +12V. Absolute maximum ratings specify ±6.5V on each supply rail; exceeding ±6V risks permanent damage. For reliable operation across temperature, TI specifies ±6V as the maximum functional limit, with tested performance guaranteed from ±2.5V to ±6V per the SBOS244H datasheet.
Does OPA2683IDGST support true single-supply operation with rail-to-rail input and output?
The OPA2683IDGST operates from a single +5V supply but does not feature rail-to-rail input or output. Its input common-mode range extends from 1.1V to 3.9V (min) with respect to ground, and output swing is specified from 0.8V to 4.2V (min) into 1kΩ. For full-swing signal handling, AC-coupling with midpoint biasing (e.g., 2.5V divider) is required - as validated in Figure 3 of the OPA2683IDGST datasheet.
How does the CFBPLUS architecture in OPA2683IDGST improve bandwidth stability versus conventional CFB op amps?
The CFBPLUS architecture in OPA2683IDGST integrates a closed-loop input buffer that linearizes the inverting-input impedance to ~5Ω across frequency and gain. This eliminates the gain-dependent pole shift seen in earlier CFB amplifiers, enabling bandwidth retention of >80MHz even at G = +10 - compared to typical CFB devices whose bandwidth drops sharply above G = +5. Measured data confirms <1dB gain flatness variation from G = +1 to +10.
Can both channels of OPA2683IDGST be shut down independently, and what is the disable current?
Yes, OPA2683IDGST provides independent shutdown control via DIS A (Pin 7) and DIS B (Pin 9), both active-low. When either DIS pin is pulled ≤1.5V, its respective channel enters low-power state with supply current reduced to ≤–360µA per supply rail (±VS). Full shutdown of both channels draws <–720µA total - verified in the Electrical Characteristics table under "Power-Down Supply Current (+VS)" for the DGS package.
What is the recommended feedback resistor value for OPA2683IDGST at G = +2, and why is it critical?
The recommended feedback resistor for OPA2683IDGST at G = +2 is 953Ω with ±5V supplies (or 1.2kΩ with +5V single supply), as specified in Figures 1 and 3 of the datasheet. This value optimizes bandwidth flatness and minimizes peaking; deviation causes measurable gain peaking (e.g., >8dB at G = +1 with RF = 953Ω) and reduces 0.1dB bandwidth by up to 50%. TI characterizes all AC specs using this exact RF value.
OPA2683IDGST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 10-VSSOP
OPA2683IDGST FAQ
1.How can I place an order for OPA2683IDGST through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2683IDGST 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 OPA2683IDGST reliable?
The price and inventory of OPA2683IDGST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2683IDGST is usually 5 days.
3.What payment methods are accepted for OPA2683IDGST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2683IDGST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2683IDGST?
OPA2683IDGST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2683IDGST 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 OPA2683IDGST?
For technical support, including OPA2683IDGST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2683IDGST requirements.
6.How does Aetrix verify that OPA2683IDGST is sourced from the original manufacturer or authorized distributors?
All OPA2683IDGST 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 OPA2683IDGST meets industry standards.
7.What is the process for return or replacement of OPA2683IDGST?
All OPA2683IDGST units undergo pre-shipment inspection (PSI). If there is an issue with OPA2683IDGST, 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 OPA2683IDGST part is unused and in its original packaging.
Return procedure for OPA2683IDGST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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