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Texas Instruments OPA356AID
- Part No.:
- OPA356AID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA356AID.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:188
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Product details
Overview
OPA356AID from Texas Instruments is a single-channel, high-speed, voltage-feedback CMOS operational amplifier optimized for video signal conditioning and wideband analog applications. It delivers 450MHz unity-gain bandwidth, 360V/µs slew rate, rail-to-rail output swing within 100mV of rails, and exceptional video performance (0.02% differential gain, 0.05° differential phase) at 75Ω load - enabling direct driving of back-terminated video cables in broadcast and medical imaging systems.
For engineers reviewing the OPA356AID datasheet, OPA356AID pinout, OPA356AID application, or OPA356AID equivalent, key selection criteria include its 2.5V–5.5V single-supply operation, –40°C to +125°C extended temperature range, low 5.8nV/√Hz input voltage noise, 3pA input bias current, and SOIC-8 package compatibility with high-density PCB layouts requiring stable DC precision and GHz-class transient fidelity.
Technical Context
The OPA356AID employs a fully complementary CMOS input stage with common-mode input range extending 100mV below ground and up to 1.5V below V+, enabling true single-supply operation in ground-referenced sensor interfaces and ADC/DAC buffers. Its voltage-feedback architecture supports stable unity-gain configuration while maintaining 200MHz gain-bandwidth product at G = +10.
Thermal shutdown activates at 160°C junction temperature and resets at 140°C, protecting against sustained overload conditions. The output stage delivers ±100mA peak current into short-circuit loads and sustains ±60mA continuous output while maintaining rail-to-rail swing - critical for driving capacitive video lines and active filter networks without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 450MHz - enables stable voltage-follower operation with sub-nanosecond rise time for fast pulse conditioning. |
| Slew Rate | 360V/µs - supports distortion-free amplification of >100MHz small-signal transients and 2V step responses settling to 0.1% in 30ns. |
| Input Voltage Noise | 5.8nV/√Hz at 1MHz - preserves SNR in photodiode transimpedance and ultrasound receive chains where low-noise gain precedes ADC. |
| Differential Gain/Phase | 0.02%/0.05° at NTSC - meets broadcast-grade video linearity requirements without external peaking networks. |
| Supply Range | 2.5V to 5.5V single supply - simplifies power architecture in portable instrumentation and battery-powered optical modules. |
| Output Swing | Within 100mV of rails at 150Ω load - maximizes dynamic range in 3.3V and 5V data acquisition systems. |
| Quiescent Current | 8.3mA per channel at 5V - balances speed and power efficiency in multi-channel video processing ASIC support circuits. |
Pinout & Package
OPA356AID is housed in an 8-pin SOIC (D) package with standard JEDEC MS-012 outline, 1.27mm pitch, and 4.9mm × 3.9mm body dimensions. Thermal resistance θJA is 125°C/W, supporting operation up to +125°C ambient with minimal heatsinking.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (–IN) | High-impedance CMOS node accepting differential input signals; supports rail-to-rail common-mode range from (V–) – 0.1V to (V+) – 1.5V. |
| 2 | Non-Inverting Input (+IN) | Low-bias-current (3pA typ) input for single-ended or differential configurations; immune to ESD damage when current-limited to ≤10mA. |
| 3 | Output (OUT) | Capable of ±100mA peak drive into 75Ω video loads; rail-to-rail swing enables full-scale utilization of 12-bit+ ADC reference ranges. |
| 4 | V– (Ground/–VS) | Power return path; internal ESD diodes clamp inputs to this rail; must be low-impedance for harmonic distortion < –90dBc at 1MHz. |
| 5 | V+ (Supply) | Positive supply input; requires ≥10µF ceramic bypass capacitor adjacent to pin to suppress supply-induced intermodulation distortion. |
| 6–8 | No Connect (NC) | Internally unconnected pins; must remain floating - no routing or grounding permitted to avoid parasitic coupling or thermal stress. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers 0.1V headroom at 150Ω load, preserving >95% of full-scale dynamic range in 3.3V data converters. |
| 0.1dB gain flatness to 75MHz | Ensures amplitude consistency across HD video baseband (0–30MHz) and ultrasound harmonics without equalization. |
| Thermal shutdown protection | Automatically disables output above 160°C junction temperature, preventing latch-up during sustained 100mA output events. |
| Input includes ground | Enables direct interfacing with ground-referenced sensors (e.g., photodiodes, thermocouples) without level-shifting circuitry. |
| Low 3pA input bias current | Minimizes offset drift in high-impedance transimpedance amplifiers used with 10MΩ–1GΩ feedback networks. |
Applications
| Video Processing | Ultrasound Imaging |
|---|---|
|
Use Scenario: Amplifying composite NTSC/PAL video signals in broadcast encoders before cable transmission. IC Role / Device Role / Timing Role: Video driver amplifier with back-termination capability for 75Ω coaxial distribution. Use Value: 0.02% differential gain error eliminates hue shifts; rail-to-rail output drives 1VP-P signal directly into terminated line without clipping. |
Use Scenario: Low-noise amplification of weak echo signals from piezoelectric transducers in portable ultrasound machines. IC Role / Device Role / Timing Role: First-stage transimpedance amplifier converting picoamp-level currents to voltage. Use Value: 5.8nV/√Hz input noise preserves weak-signal SNR; 360V/µs slew rate resolves 10MHz+ harmonics without slew-induced distortion. |
| Photodiode Transimpedance | ADC Input Buffer |
|
Use Scenario: Converting photocurrent from high-speed optical receivers (e.g., fiber channel, LiDAR) into measurable voltage. IC Role / Device Role / Timing Role: High-gain, low-noise transimpedance amplifier with wide bandwidth for pulse detection. Use Value: 450MHz unity-gain bandwidth supports sub-1ns optical pulse response; 3pA input bias avoids dark-current-induced offset errors. |
Use Scenario: Driving SAR or pipeline ADC inputs in high-speed data acquisition systems sampling at ≥10MSPS. IC Role / Device Role / Timing Role: Unity-gain buffer isolating ADC front-end from source impedance variations. Use Value: 30ns 0.1% settling time ensures accurate sampling of 12-bit codes; rail-to-rail swing matches ADC reference rails for full dynamic range. |
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 |
|---|---|---|---|
| OPA355ID | Includes shutdown mode; 200MHz GBW; rail-to-rail input/output; higher 12.5mA quiescent current. | Better suited for power-gated systems requiring standby current < 1µA; less optimal for video due to lower slew rate (210V/µs). | Select OPA355ID only when system-level power cycling is required and video differential phase < 0.1° is not mandatory. |
| OPA634U | Higher 150MHz GBW; bipolar input; 10nV/√Hz noise; no thermal shutdown; 12V max supply. | Preferred for ultra-low-distortion audio or RF IF stages where CMOS input bias is not critical and dual-supply operation is acceptable. | Choose OPA634U when operating from ±5V supplies and input bias current >100pA is tolerable; avoid in single-supply video paths. |
Compared with OPA355ID and OPA634U, the OPA356AID uniquely combines 450MHz unity-gain bandwidth, rail-to-rail output, thermal protection, and 3pA input bias in a single SOIC-8 package - making it the only option among the three qualified for extended-temperature video driver and photodiode TIA roles without design compromises.
Availability
OPA356AID is available at Aetrix Electronics and suitable for video processing, ultrasound imaging, photodiode transimpedance amplification, and high-speed ADC input buffering requiring stable component supply across industrial, medical, and test equipment programs.
Supply support for OPA356AID 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 delivering analog and embedded processing solutions, with over 90 years of innovation in precision amplifiers, data converters, and power management ICs.
The OPA356AID belongs to TI's high-speed precision op amp product line, engineered specifically for demanding video, medical imaging, and optical networking applications where bandwidth, linearity, and rail-to-rail operation are non-negotiable.
FAQ
What is the maximum operating temperature range for the OPA356AID?
The OPA356AID is specified over the extended industrial temperature range of –40°C to +125°C, with absolute maximum operating temperature reaching +150°C. Its thermal shutdown circuit activates at 160°C junction temperature and resets at 140°C, ensuring robust reliability in enclosed enclosures or high-power-density video processing modules where ambient temperatures exceed 85°C.
Does the OPA356AID support single-supply operation below 3V?
Yes, the OPA356AID operates from a minimum single supply of 2.5V (±1.25V), with full specifications guaranteed from 2.7V to 5.5V. At 2.5V, it maintains rail-to-rail output swing within 100mV of both rails and retains 0.02% differential gain accuracy - enabling use in low-voltage portable ultrasound probes and battery-powered optical receivers without level-shifting circuitry.
Can the OPA356AID drive a 75Ω video cable directly?
Yes, the OPA356AID is explicitly characterized to drive standard back-terminated 75Ω video cables, presenting a 150Ω resistive load to the output. Its 450MHz bandwidth, 360V/µs slew rate, and 0.02%/0.05° differential gain/phase performance meet broadcast-grade requirements without external compensation or peaking networks.
What is the purpose of Pins 6–8 on the OPA356AID SOIC-8 package?
Pins 6–8 on the OPA356AID are No Connect (NC) terminals with no internal connection. They must remain unconnected - neither grounded nor routed - to prevent parasitic capacitance, unintended coupling, or mechanical stress on the die bond wires. This NC configuration is confirmed in TI's SBOS212A datasheet pinout diagram and package drawings.
How does the OPA356AID compare to the dual-channel OPA2356AID in terms of electrical performance?
The OPA356AID and OPA2356AID share identical per-channel specifications: 450MHz unity-gain bandwidth, 360V/µs slew rate, 5.8nV/√Hz noise, and –40°C to +125°C operation. However, the OPA356AID avoids channel-to-channel crosstalk (< –90dB at 5MHz for OPA2356), making it preferable for ultra-high-isolation applications like precision photodiode arrays or independent ADC channel buffering where inter-channel interference must be eliminated.
OPA356AID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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
OPA356AID FAQ
1.How can I place an order for OPA356AID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA356AID 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 OPA356AID reliable?
The price and inventory of OPA356AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA356AID is usually 5 days.
3.What payment methods are accepted for OPA356AID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA356AID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA356AID?
OPA356AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA356AID 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 OPA356AID?
For technical support, including OPA356AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA356AID requirements.
6.How does Aetrix verify that OPA356AID is sourced from the original manufacturer or authorized distributors?
All OPA356AID 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 OPA356AID meets industry standards.
7.What is the process for return or replacement of OPA356AID?
All OPA356AID units undergo pre-shipment inspection (PSI). If there is an issue with OPA356AID, 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 OPA356AID part is unused and in its original packaging.
Return procedure for OPA356AID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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