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Texas Instruments OPA356AIDR
- Part No.:
- OPA356AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA356AIDR.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,858
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Product details
Overview
OPA356AIDR from Texas Instruments is a single-channel, high-speed, voltage-feedback CMOS operational amplifier optimized for video signal processing and wideband analog applications. It delivers 450MHz unity-gain bandwidth, 360V/µs slew rate, rail-to-rail output swing within 100mV of rails, 0.02% differential gain / 0.05° differential phase accuracy, and operates from 2.5V to 5.5V single supply. It is used in composite video driver circuits requiring NTSC compliance.
For engineers reviewing the OPA356AIDR datasheet, OPA356AIDR pinout, OPA356AIDR application, or OPA356AIDR equivalent, key selection criteria include its 75MHz 0.1dB gain flatness, ±60mA continuous output current, –40°C to +125°C extended temperature range, thermal shutdown protection at 160°C, and SOIC-8 package compatibility with standard PCB layouts for high-frequency analog designs.
Technical Context
The OPA356AIDR implements a fully differential input stage with CMOS transistors enabling 3pA typical input bias current and 5.8nV/√Hz input voltage noise. Its voltage-feedback architecture supports stable operation at unity gain while maintaining 200MHz gain-bandwidth product under G = +10 conditions.
Common-mode input range extends 100mV below ground and up to 1.5V below V+, enabling true single-supply operation with ground-referenced inputs. The output stage drives 150Ω loads to within 0.2V of rails at ±60mA, and includes on-die thermal shutdown that disables output above 160°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 450MHz - enables stable G = +1 video follower configurations without peaking or oscillation |
| Slew Rate | 360V/µs - supports clean 2Vpp step response in ≤8ns with <0.1% settling time to 30ns |
| Differential Gain/Phase | 0.02% / 0.05° - meets NTSC broadcast video fidelity requirements driving 150Ω loads |
| Input Bias Current | 3pA - minimizes DC error in high-impedance photodiode transimpedance or active filter applications |
| Rail-to-Rail Output | Within 100mV of rails - preserves >96% dynamic range on 5V supply for ADC input buffering |
| Supply Voltage Range | 2.5V to 5.5V - supports portable and industrial systems using 3.3V or 5V rails without level-shifting |
| Quiescent Current | 8.3mA per channel - balances speed and power for battery-sensitive high-bandwidth signal chains |
Pinout & Package
OPA356AIDR is housed in an SOIC-8 (D) package with 1.27mm lead pitch, JEDEC MS-012 compliant, and rated for –40°C to +125°C operation. Thermal resistance θJA is 125°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Not bonded; must be left floating or tied to ground per layout best practices |
| 2 (V+) | Positive supply rail | Accepts 2.5V–5.5V; requires local 10µF ceramic + optional 1µF tantalum bypass |
| 3 (Out) | Amplifier output | Drives 150Ω video loads directly; supports back-terminated 75Ω cable interfaces |
| 4 (NC) | No internal connection | Not bonded; must be left floating or tied to ground |
| 5 (NC) | No internal connection | Not bonded; must be left floating or tied to ground |
| 6 (–In) | Inverting input | Differential pair input node; ESD-protected with internal diodes to V+/V– |
| 7 (+In) | Non-inverting input | Differential pair input node; common-mode range includes ground (V– – 0.1V) |
| 8 (V–) | Negative supply rail | Ground reference in single-supply mode; supports dual-supply operation down to ±1.25V |
Key Features
| Feature | Design Value |
|---|---|
| 0.1dB gain flatness to 75MHz | Ensures amplitude consistency across full NTSC/PAL video bandwidth without external equalization |
| Thermal shutdown at 160°C | Prevents permanent damage during sustained overload or poor heatsinking in compact enclosures |
| Input range includes ground | Eliminates need for level-shifting circuitry when interfacing with ground-referenced sensors or DACs |
| Low 5.8nV/√Hz input noise | Maintains SNR integrity in low-level signal amplification stages such as photodiode transimpedance amps |
| 200MHz gain-bandwidth product | Supports stable closed-loop gain ≥+10 at frequencies up to 20MHz without compensation |
Applications
| Video Processing | Ultrasound Imaging |
|---|---|
Use Scenario: Driving composite video signals to 75Ω coaxial cables in broadcast equipment and CCTV encoders. IC Role / Device Role / Timing Role: Final-stage video buffer amplifier with precise differential gain/phase linearity. Use Value: 0.02% differential gain error ensures color fidelity over multiple cascaded stages without calibration. | Use Scenario: Amplifying high-frequency echo return signals (5–15MHz) from piezoelectric transducers. IC Role / Device Role / Timing Role: Low-noise, wideband gain block in receive-path analog front-end before ADC sampling. Use Value: 360V/µs slew rate preserves pulse edge integrity for time-of-flight measurements with sub-nanosecond timing resolution. |
| Photodiode Transimpedance Amp | High-Speed ADC Input Buffer |
Use Scenario: Converting low-current photocurrents (nA–µA) from optical receivers into voltage signals. IC Role / Device Role / Timing Role: Transimpedance amplifier with ultra-low input bias current and low input capacitance. Use Value: 3pA input bias current prevents offset drift in high-value feedback resistor configurations (>1MΩ). | Use Scenario: Isolating and driving analog inputs of 10–14-bit, 50–100MSPS ADCs in data acquisition systems. IC Role / Device Role / Timing Role: Unity-gain buffer providing low-output-impedance drive and fast settling to meet ADC aperture uncertainty requirements. Use Value: 30ns 0.1% settling time ensures accurate sampling of fast-rising analog waveforms without missing code errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA355AIDR | Includes shutdown mode; 200MHz GBW; rail-to-rail input/output; higher 12mA IQ | Better suited for power-gated systems requiring standby current <1µA; less optimal for pure video due to lower slew rate (210V/µs) | Select OPA355AIDR only if system-level shutdown control is required and video differential phase <0.05° is not mandatory |
| OPA634AU | Higher 150MHz GBW; 1200V/µs slew rate; ±5V supply only; SOIC-8 package | Designed for precision instrumentation with lower noise (2.1nV/√Hz); not specified for –40°C to +125°C | Choose OPA634AU for high-accuracy DC-coupled measurement systems where wide temperature range is not required |
Compared with OPA356AIDR, OPA355AIDR adds power management at the cost of video performance, while OPA634AU trades extended temperature capability and single-supply flexibility for superior DC precision and slew rate in narrower operating conditions.
Availability
OPA356AIDR is available at Aetrix Electronics and suitable for video processing, ultrasound imaging, and high-speed data acquisition systems requiring stable component supply across automotive, industrial, and medical design cycles.
Supply support for OPA356AIDR 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, personal electronics, and communications markets.
The OPA356 series belongs to TI's high-speed precision op amp portfolio, engineered specifically for wideband video, optical networking, and medical imaging applications demanding both speed and fidelity across extended temperature ranges.
FAQ
What is the maximum continuous output current specification for OPA356AIDR?
The OPA356AIDR is rated for ±60mA continuous output current per channel under normal operating conditions. Exceeding this limit is not recommended, as confirmed by the "Output Voltage Swing vs Output Current" curves in the SBOS212A datasheet. At ±100mA peak, the device remains functional but thermal shutdown may activate if sustained, and output swing degrades to within 0.8–1.0V of rails.
Does OPA356AIDR support true single-supply operation with input signals at ground potential?
Yes, OPA356AIDR supports true single-supply operation with input common-mode voltage extending 100mV below ground (V– – 0.1V). This allows direct interfacing with ground-referenced sources such as DAC outputs or sensor bridges without level-shifting circuitry, as verified in the Electrical Characteristics table under "Common-Mode Voltage Range".
What is the thermal shutdown behavior of OPA356AIDR, and how does it recover?
The OPA356AIDR activates thermal shutdown at 160°C junction temperature and resets automatically when junction temperature falls below 140°C. This hysteresis prevents cycling near the trip point. Recovery is passive and requires no external intervention-operation resumes once die temperature cools sufficiently, as documented in the "Thermal Shutdown" section of SBOS212A.
Can OPA356AIDR drive a 75Ω back-terminated video cable without external components?
Yes, OPA356AIDR is explicitly characterized to drive standard back-terminated 75Ω video cables. When properly terminated, the load appears resistive (150Ω), avoiding capacitive loading effects. The datasheet confirms this capability in the "Output Drive" section and specifies differential gain/phase performance under 150Ω load conditions.
Is OPA356AIDR pin-compatible with other members of the OPA356 family in SOIC-8 packaging?
Yes, all SOIC-8 variants of the OPA356 family-including OPA356AID, OPA356AIDR, and OPA356AIDG4-share identical pinout and footprint. Pin 1 is NC, pins 2 and 8 are supplies, pin 3 is output, pins 6 and 7 are inputs, and pins 4–5 are NC. This uniformity enables drop-in replacement across ordering variants without PCB changes.
OPA356AIDR 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:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 360V/µs
- Gain Bandwidth Product:
- 200 MHz
- -3db Bandwidth:
- 450 MHz
- Current - Input Bias:
- 3 pA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 8.3mA
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA356AIDR FAQ
1.How can I place an order for OPA356AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA356AIDR 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 OPA356AIDR reliable?
The price and inventory of OPA356AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA356AIDR is usually 5 days.
3.What payment methods are accepted for OPA356AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA356AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA356AIDR?
OPA356AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA356AIDR 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 OPA356AIDR?
For technical support, including OPA356AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA356AIDR requirements.
6.How does Aetrix verify that OPA356AIDR is sourced from the original manufacturer or authorized distributors?
All OPA356AIDR 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 OPA356AIDR meets industry standards.
7.What is the process for return or replacement of OPA356AIDR?
All OPA356AIDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA356AIDR, 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 OPA356AIDR part is unused and in its original packaging.
Return procedure for OPA356AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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