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Texas Instruments OPA820IDBVT
- Part No.:
- OPA820IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA820IDBVT.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,536
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Product details
Overview
OPA820IDBVT from Texas Instruments is a unity-gain stable, low-noise, voltage-feedback operational amplifier in a 5-pin SOT-23 package. It delivers 240 MHz small-signal bandwidth at G = 2, 2.5 nV/√Hz input voltage noise, ±110 mA output current, and operates from ±2.5 V to ±6 V or single 5 V to 12 V supplies - enabling high-fidelity ADC preamplification in portable test equipment.
For engineers reviewing the OPA820IDBVT datasheet, OPA820IDBVT pinout, OPA820IDBVT application, or OPA820IDBVT 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 line driving, and validated performance across –45°C to +85°C ambient temperature.
Technical Context
The OPA820IDBVT uses a voltage-feedback architecture optimized for unity-gain stability without external compensation. Its internal design achieves >800 MHz bandwidth at G = 1 while maintaining <1-dB peaking, supported by low 5.6 mA quiescent current and minimal input/output voltage headroom - allowing >2-VPP swing on a single 5-V supply.
It features rail-limited (not rail-to-rail) output swing, with ±3.7 V typical output voltage range under no load at ±5 V supplies, and maintains low harmonic distortion (–85 dBc 2nd-harmonic, –95 dBc 3rd-harmonic at 1 MHz) into 200 Ω loads - critical for precision analog front-ends interfacing with 14-bit ADCs like the ADS850.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G = 2) | 240 MHz typical - enables wideband signal conditioning for 10 MSPS ADCs like ADS850 without bandwidth bottleneck. |
| Input voltage noise | 2.5 nV/√Hz - preserves SNR in low-amplitude sensor or CCD channel amplification paths. |
| Output current | ±110 mA - drives heavy capacitive loads or low-impedance video lines (e.g., 150 Ω PAL) without gain collapse. |
| Supply range | Single 5 V to 12 V or dual ±2.5 V to ±6 V - supports both portable (5 V) and industrial (±5 V) power domains. |
| Input offset voltage | ±750 µV max at 25°C - ensures <0.01% absolute DC error in precision gain stages before 14-bit conversion. |
| Differential gain/phase | 0.01% / 0.03° - meets broadcast-grade composite video line driver requirements without external trimming. |
| Quiescent current | 5.6 mA - balances speed and power efficiency for battery-operated test equipment. |
Pinout & Package
OPA820IDBVT is packaged in a 5-pin SOT-23 (DBV) with 2.90 mm × 1.60 mm body size, optimized for high-density portable designs and offering the industry's lowest thermal impedance in its package class.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers ±110 mA drive; requires series resistor (e.g., 24.9 Ω) for video termination or ADC interface matching. |
| 2 (–VS) | Negative supply | Connect to ground in single-supply operation; supports rail-to-rail input common-mode down to –VS + 1.2 V. |
| 3 (+IN) | Noninverting input | High-impedance node (6 MΩ || 1 pF); used for unity-gain buffer or noninverting gain configurations. |
| 4 (–IN) | Inverting input | Accepts feedback network; input bias current ≤ ±17 µA at 25°C affects high-Z sensor interfaces. |
| 5 (+VS) | Positive supply | Supports up to +12 V; thermal performance degrades above 85°C ambient without board-level heatsinking. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable | No external compensation required - simplifies layout and reduces BOM count in fast-settling ADC driver stages. |
| Low 2.5 nV/√Hz noise | Maintains >70 dB SNR for 14-bit systems even with 100 kHz–10 MHz signal bandwidths. |
| 800-MHz G = 1 bandwidth | Enables accurate pulse amplification (e.g., CCD imaging transients) with <22 ns settling to 0.02%. |
| 0.01% dG / 0.03° dP | Eliminates need for external video DAC calibration in low-cost composite video line drivers. |
| –45°C to +85°C operation | Validated over full industrial temperature range - suitable for embedded instrumentation without derating. |
Applications
| ADC Preamplifier | Composite Video Line Driver |
|---|---|
Use Scenario: Signal conditioning prior to sampling by a 14-bit, 10 MSPS SAR ADC such as the ADS850 in portable data acquisition systems. IC Role / Device Role / Timing Role: High-speed, low-noise gain stage providing 2× noninverting amplification with <22 ns settling time to 0.02%. Use Value: Preserves ENOB by limiting added noise to <0.5 LSB and avoiding bandwidth-induced aperture uncertainty. | Use Scenario: Driving 75 Ω or 150 Ω coaxial video lines in PAL/NTSC broadcast monitors or security DVR front-ends. IC Role / Device Role / Timing Role: Unity-gain buffer with precise DC-coupled output swing and ultra-low dG/dP distortion. Use Value: Meets ITU-R BT.470 spec without external passive trimming, reducing component count and calibration labor. |
| Active Filter Stage | Optical Channel Amplifier |
Use Scenario: 5-MHz Butterworth low-pass filter in medical ultrasound receive chains requiring low group delay variation. IC Role / Device Role / Timing Role: High-Q, low-distortion op-amp implementing 2nd-order Sallen-Key topology with 100 pF/160 pF capacitors. Use Value: Achieves <0.1 dB passband ripple and –40 dB stopband attenuation at 10 MHz using standard E96 values. | Use Scenario: Transimpedance amplification of photodiode current in fiber-optic receiver modules with 100 kΩ–1 MΩ feedback. IC Role / Device Role / Timing Role: Low-input-capacitance (0.8 pF), low-noise amplifier minimizing total input-referred noise floor. Use Value: Enables >100 Mbps optical link sensitivity with <10 pA/√Hz current noise contribution at 100 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-feedback operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2822IDR | Dual-channel, 220 MHz GBW, 3.5 nV/√Hz noise, SOIC-8 package | Requires PCB redesign for dual-channel use; higher noise limits SNR in single-ended 14-bit ADC interfaces | Select when space allows dual-channel consolidation and noise budget permits ≥3.5 nV/√Hz |
| LMH6629MF/NOPB | Single-channel, 2.8 nV/√Hz noise, 1.5 GHz GBW, SOT-23-5, but not unity-gain stable | Requires external compensation for G = 1; unsuitable for direct replacement in uncompensated video or ADC buffer roles | Select only for G ≥ 5 applications where higher bandwidth justifies added stability design effort |
Compared with OPA2822IDR and LMH6629MF/NOPB, the OPA820IDBVT uniquely combines unity-gain stability, 2.5 nV/√Hz noise, and SOT-23-5 packaging - making it the only drop-in solution for space-constrained, low-noise, unity-gain ADC driver and video line driver applications.
Availability
OPA820IDBVT is available at Aetrix Electronics and suitable for portable test equipment, composite video line drivers, and 14-bit ADC preamplifiers requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for OPA820IDBVT 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The OPA820 product line was designed specifically for high-speed, low-noise signal conditioning in precision data acquisition and video infrastructure - prioritizing unity-gain stability, thermal robustness in SOT-23, and validated AC/DC performance across –45°C to +85°C.
FAQ
What is the maximum operating temperature range for the OPA820IDBVT?
The OPA820IDBVT is fully specified and tested over an operating ambient temperature range of –45°C to +85°C. This industrial-grade rating is validated per TI's production test flow and thermal characterization, ensuring consistent 240 MHz bandwidth, ±110 mA output drive, and 2.5 nV/√Hz noise performance across the full range - critical for deployment in uncontrolled-environment instrumentation.
Does the OPA820IDBVT require external compensation for unity-gain operation?
No, the OPA820IDBVT is internally compensated for unity-gain stability. It delivers >800 MHz small-signal bandwidth at G = 1 with less than 1-dB peaking, eliminating the need for external compensation components. This simplifies PCB layout and improves reliability in ADC driver and video buffer applications where phase margin must be guaranteed without tuning.
Can the OPA820IDBVT drive a 150 Ω video load while maintaining 0.01% differential gain?
Yes - the OPA820IDBVT is characterized for 0.01% differential gain and 0.03° differential phase into a 150 Ω load under PAL conditions (VO = 1.4 VPP), as confirmed in TI's SBOS303D datasheet Figure 23. Its ±110 mA output current and low closed-loop output impedance (0.04 Ω) ensure minimal gain droop and phase shift across the 4.43 MHz color subcarrier band.
What is the typical input offset voltage drift over temperature for the OPA820IDBVT?
The OPA820IDBVT has an average input offset voltage drift of 4 µV/°C over the –40°C to +85°C range, as specified in Section 7.5 of the datasheet. This low drift ensures <3.2 mV total offset shift across the full industrial temperature span - preserving DC accuracy in precision gain stages feeding 14-bit ADCs without active calibration.
Is the OPA820IDBVT pin-compatible with other SOT-23 op-amps like the OPA354?
No - the OPA820IDBVT uses a nonstandard SOT-23 pinout: Pin 1 = OUT, Pin 2 = –VS, Pin 3 = +IN, Pin 4 = –IN, Pin 5 = +VS. This differs from the industry-standard OPA354 (Pin 1 = NC, Pin 2 = –IN, Pin 3 = +IN, Pin 5 = OUT), so direct PCB substitution is not possible without layout revision.
OPA820IDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
OPA820IDBVT FAQ
1.How can I place an order for OPA820IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA820IDBVT 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 OPA820IDBVT reliable?
The price and inventory of OPA820IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA820IDBVT is usually 5 days.
3.What payment methods are accepted for OPA820IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA820IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA820IDBVT?
OPA820IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA820IDBVT 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 OPA820IDBVT?
For technical support, including OPA820IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA820IDBVT requirements.
6.How does Aetrix verify that OPA820IDBVT is sourced from the original manufacturer or authorized distributors?
All OPA820IDBVT 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 OPA820IDBVT meets industry standards.
7.What is the process for return or replacement of OPA820IDBVT?
All OPA820IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with OPA820IDBVT, 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 OPA820IDBVT part is unused and in its original packaging.
Return procedure for OPA820IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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