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Texas Instruments OPA820IDBVTG4
- Part No.:
- OPA820IDBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA820IDBVTG4.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,907
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Product details
Overview
OPA820IDBVTG4 from Texas Instruments is a unity-gain stable, low-noise voltage-feedback operational amplifier in a 5-pin SOT-23 package, delivering 240 MHz small-signal bandwidth (G = 2), 2.5 nV/√Hz input voltage noise, ±110 mA output current, and 5.6 mA quiescent supply current at ±5 V - optimized for ADC preamplifiers and high-fidelity video line drivers.
For engineers reviewing the OPA820IDBVTG4 datasheet, OPA820IDBVTG4 pinout, OPA820IDBVTG4 application, or OPA820IDBVTG4 equivalent, key selection criteria include its 800-MHz unity-gain bandwidth with <1-dB peaking, 0.01% differential gain / 0.03° differential phase for composite video, and full specification across –45°C to +85°C ambient temperature.
Technical Context
The OPA820IDBVTG4 employs a voltage-feedback architecture with unity-gain stability achieved via internal compensation, supporting gains from –1 to ≥10 without external compensation. Its high slew rate (240 V/µs typ. at ±5 V) and low closed-loop output impedance (0.04 Ω) enable fast settling (18 ns to 0.1%) into 100-Ω loads.
It operates from dual ±2.5 V to ±6 V or single 5 V to 12 V supplies, with rail-compatible input common-mode range (±3.6 V min. at ±5 V) and output swing of ±3.4 V into 100 Ω. Input bias current drift is 5 nA/°C, and DC precision includes ±750 µV max input offset voltage at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G = 2) | 240 MHz typical at ±5 V - supports >10 MSPS signal conditioning without gain-dependent bandwidth collapse. |
| Input voltage noise | 2.5 nV/√Hz at f > 100 kHz - enables low-noise amplification of weak sensor or ADC reference signals. |
| Output current | ±110 mA typical at ±5 V - drives 100-Ω video loads or multiple ADC inputs without external buffers. |
| Quiescent current | 5.6 mA at ±5 V - balances speed and power for portable test equipment and battery-sensitive designs. |
| Unity-gain bandwidth | 800 MHz with <1-dB peaking - ensures stable operation in G = 1 configurations like active filters or I/V converters. |
| Differential gain/phase | 0.01% / 0.03° at PAL - meets broadcast-grade video line driver requirements without post-compensation. |
| Input offset voltage | ±750 µV max at 25°C - provides absolute DC accuracy for pulse amplifiers and precision integrators. |
Pinout & Package
OPA820IDBVTG4 uses the DBV (5-pin SOT-23) package, measuring 2.90 mm × 1.60 mm, with thermal resistance RθJA = 150°C/W. It features minimal board footprint and industry-low thermal impedance for SOT packages.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers ±110 mA into 100 Ω; swing limited to 1.2–3.9 V on 5-V supply or ±3.4 V on ±5 V supply. |
| 2 (–VS) | Negative supply | Accepts –2.5 V to –6 V in dual-supply mode; tied to ground in single-supply 5-V operation. |
| 3 (+IN) | Noninverting input | High-impedance node (6 MΩ || 1 pF); common-mode range extends to within 1.3 V of rails at 5 V. |
| 4 (–IN) | Inverting input | High-impedance node (15 kΩ || 1 pF); used for feedback network connection in standard configurations. |
| 5 (+VS) | Positive supply | Accepts +2.5 V to +6 V in dual-supply or +5 V to +12 V in single-supply; powers internal bias circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable | No external compensation required - simplifies layout and reduces BOM count in G = 1 applications like video drivers. |
| Low input noise | 2.5 nV/√Hz enables high-resolution signal chain front-ends where SNR degradation must be minimized. |
| High output drive | ±110 mA output sustains 2-VPP swing into 100 Ω - eliminates need for discrete output transistors in CCD imaging channels. |
| Wide supply range | Operates from ±2.5 V to ±6 V or 5 V to 12 V - supports legacy ±5 V systems and modern low-voltage portable designs. |
| Video-optimized dG/dP | 0.01% differential gain error ensures accurate color reproduction in composite video line drivers without calibration. |
Applications
| ADC Preamplifier | Composite Video Line Driver |
|---|---|
Use Scenario: Signal conditioning before a 14-bit, 10-MSPS ADC such as the ADS850, with AC-coupled input and 2-VPP full-scale range. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth buffer that preserves SNR while driving ADC input capacitance and maintaining fast settling. Use Value: 2.5 nV/√Hz input noise and 85-MHz large-signal bandwidth ensure ≤0.5 LSB noise contribution and full-scale step settling in <22 ns. |
Use Scenario: Driving 75-Ω coaxial video lines in security cameras or broadcast monitors using PAL/NTSC standards. IC Role / Device Role / Timing Role: Final-stage analog driver with precise amplitude and phase fidelity across baseband video spectrum (0–5.5 MHz). Use Value: 0.01% dG / 0.03° dP performance eliminates color distortion; ±110 mA output sustains 1-VPP into 75 Ω without clipping. |
| Active Filter | Optical Channel Amplifier |
Use Scenario: 5-MHz Butterworth low-pass filter in portable test equipment, implemented with 517-Ω resistors and 100-pF/160-pF capacitors. IC Role / Device Role / Timing Role: High-speed op amp providing precise pole placement and minimal group delay variation near cutoff. Use Value: 240-MHz G = 2 bandwidth and low distortion (–85 dBc 2nd-harmonic @ 1 MHz) preserve filter shape and stopband rejection. |
Use Scenario: Transimpedance amplifier for photodiode outputs in fiber-optic receivers or laser rangefinders. IC Role / Device Role / Timing Role: Low-noise, high-gain current-to-voltage converter with wide dynamic range and fast response. Use Value: 2.5 nV/√Hz input noise minimizes dark-current-induced errors; 240 V/µs slew rate supports >10-MHz optical pulse detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-feedback op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA827IDBVT | Lower input bias current (±1 nA vs ±400 nA), higher precision (±150 µV VOS), but lower bandwidth (22 MHz) and no video-optimized dG/dP spec. | Better for high-impedance sensor interfaces (e.g., pH probes), unsuitable for video or high-speed ADC buffering. | Select OPA827IDBVT only when ultra-low input current and DC accuracy outweigh speed requirements. |
| OPA691IDBVT | Higher slew rate (3100 V/µs), wider bandwidth (650 MHz G = 2), but higher noise (4.6 nV/√Hz) and no dG/dP characterization. | Suitable for RF IF amplification or pulse amplification, but not recommended for video or precision ADC front-ends. | Choose OPA691IDBVT when extreme speed dominates over noise and video fidelity constraints. |
Compared with OPA820IDBVTG4, OPA827IDBVT trades bandwidth and video linearity for DC precision and input impedance, while OPA691IDBVT sacrifices noise and dG/dP for raw speed - making OPA820IDBVTG4 the balanced choice for mixed-signal, video, and portable instrumentation applications.
Availability
OPA820IDBVTG4 is available at Aetrix Electronics and suitable for ADC preamplifier circuits, composite video line drivers, and active filter designs requiring stable component supply, consistent parametric performance, and industrial temperature support (–45°C to +85°C).
Supply support for OPA820IDBVTG4 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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in high-performance op amps and signal chain solutions.
The OPA820IDBVTG4 belongs to TI's high-speed precision op amp product line, designed specifically for applications demanding simultaneous bandwidth, low noise, DC accuracy, and video-grade linearity - including data acquisition, imaging, and broadcast infrastructure.
FAQ
What supply voltages does the OPA820IDBVTG4 support?
The OPA820IDBVTG4 operates from dual supplies of ±2.5 V to ±6 V or a single supply of 5 V to 12 V. At ±5 V, it delivers full performance including 240 MHz bandwidth and ±110 mA output current. On 5-V single supply, output swing ranges from 1.2 V to 3.9 V with load, enabling compatibility with 3.3-V logic and ADC references.
Is the OPA820IDBVTG4 unity-gain stable, and what does that mean for circuit design?
Yes, the OPA820IDBVTG4 is internally compensated for unity-gain stability, meaning it remains stable with closed-loop gain ≥1 without external compensation components. This allows direct use in G = 1 configurations like voltage followers or active filters, reducing PCB area and eliminating tuning steps - critical for space-constrained SOT-23 designs.
How does the OPA820IDBVTG4 perform in video applications?
The OPA820IDBVTG4 is characterized for video: it achieves 0.01% differential gain and 0.03° differential phase error under PAL conditions, meeting broadcast-grade line driver requirements. Its high output current (±110 mA) drives 75-Ω cables directly, and low distortion (–85 dBc 2nd-harmonic) preserves chroma/luma integrity without post-filtering.
What is the input voltage noise of the OPA820IDBVTG4, and why does it matter?
The OPA820IDBVTG4 has a typical input voltage noise of 2.5 nV/√Hz above 100 kHz. This low value is essential in high-gain, wideband signal chains - such as CCD imaging channels or ADC preamplifiers - where op amp noise directly limits system SNR and effective resolution, especially at frequencies beyond 1 MHz.
Does the OPA820IDBVTG4 have a disable function, and how is it implemented?
No, the OPA820IDBVTG4 (DBV package) does not include a disable pin. Unlike the SOIC version (OPA820ID), the 5-pin SOT-23 variant omits the disable terminal (pin 8). Power-down must be achieved externally via supply sequencing or series FET control - confirmed by TI's pin function table showing "NC" for disable in DBV configuration.
OPA820IDBVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 240V/µs
- Gain Bandwidth Product:
- 280 MHz
- -3db Bandwidth:
- 800 MHz
- Current - Input Bias:
- 9 µA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 5.6mA
- Current - Output / Channel:
- 110 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-23-5
OPA820IDBVTG4 FAQ
1.How can I place an order for OPA820IDBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA820IDBVTG4 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 OPA820IDBVTG4 reliable?
The price and inventory of OPA820IDBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA820IDBVTG4 is usually 5 days.
3.What payment methods are accepted for OPA820IDBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA820IDBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA820IDBVTG4?
OPA820IDBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA820IDBVTG4 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 OPA820IDBVTG4?
For technical support, including OPA820IDBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA820IDBVTG4 requirements.
6.How does Aetrix verify that OPA820IDBVTG4 is sourced from the original manufacturer or authorized distributors?
All OPA820IDBVTG4 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 OPA820IDBVTG4 meets industry standards.
7.What is the process for return or replacement of OPA820IDBVTG4?
All OPA820IDBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA820IDBVTG4, 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 OPA820IDBVTG4 part is unused and in its original packaging.
Return procedure for OPA820IDBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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