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Texas Instruments OPA2356AIDGKT
- Part No.:
- OPA2356AIDGKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2356AIDGKT.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:647
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Product details
Overview
OPA2356AIDGKT from Texas Instruments is a dual, high-speed, voltage-feedback CMOS operational amplifier optimized for video and wideband signal conditioning. 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, and operates from 2.5V to 5.5V single supply. It is used in high-fidelity video driver and photodiode transimpedance amplifier circuits.
For engineers reviewing the OPA2356AIDGKT datasheet, OPA2356AIDGKT pinout, OPA2356AIDGKT application, or OPA2356AIDGKT equivalent, key selection criteria include its dual-channel independence (–90dB crosstalk at 5MHz), low 5.8nV/√Hz input voltage noise, ±60mA continuous output current, thermal shutdown protection, and VSSOP-8 package compatibility with space-constrained high-speed PCB layouts.
Technical Context
The OPA2356AIDGKT implements a fully differential, unity-gain stable voltage-feedback architecture with CMOS input stage enabling ground-sensing input common-mode range (V– – 0.1V to V+ – 1.5V) and rail-to-rail output drive. Its internal compensation ensures stability across gains ≥1 without external components.
It features independent channel circuitry minimizing inter-channel coupling, on-chip ESD protection diodes on all pins, and thermal shutdown activation at 160°C junction temperature with automatic recovery at 140°C - critical for sustained operation in video line drivers and ultrasound front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 450MHz - enables stable closed-loop operation at G = +1 with full small-signal response up to video frequencies. |
| Slew Rate | 360V/µs - supports fast transient response for 2V step signals with ≤30ns 0.1% settling time. |
| Input Voltage Noise | 5.8nV/√Hz at 1MHz - preserves SNR in low-level analog signal paths like photodiode TIA stages. |
| Differential Gain/Phase | 0.02% / 0.05° at NTSC - meets broadcast-grade video fidelity requirements without post-compensation. |
| Supply Range | 2.5V to 5.5V single supply - simplifies power design in portable and embedded systems using 3.3V or 5V rails. |
| Output Swing | Within 100mV of rails at RL = 150Ω - maximizes dynamic range in 75Ω back-terminated video transmission. |
| Channel Crosstalk | –90dB at 5MHz - ensures isolated dual-channel operation in stereo audio or dual-path sensor interfaces. |
Pinout & Package
VSSOP-8 (DGK) package: 3.0mm × 3.0mm body, 0.65mm pitch, exposed thermal pad (not electrically connected), JEDEC MO-187 compliant, moisture sensitivity level 2 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V+) | Positive Supply | Connects to single supply rail (2.5V–5.5V); requires local 10µF ceramic bypass capacitor. |
| 2 (Out A) | Amplifier A Output | Delivers rail-to-rail output swing; drives 75Ω video loads or 150Ω resistive terminations directly. |
| 3 (–In A) | Inverting Input A | Differential input node for Channel A; high-impedance CMOS input (10¹³ Ω || 1.5pF). |
| 4 (+In A) | Non-Inverting Input A | Ground-capable input (extends 100mV below V–); enables single-supply sensor interface topologies. |
| 5 (–In B) | Inverting Input B | Independent Channel B input; no electrical coupling to Channel A per datasheet crosstalk spec. |
| 6 (+In B) | Non-Inverting Input B | Matches Pin 4 functionality for Channel B; supports dual parallel signal paths. |
| 7 (Out B) | Amplifier B Output | Functionally identical to Pin 2; supports simultaneous dual-output configurations without interaction. |
| 8 (V–) | Negative Supply / Ground | Connected to system ground in single-supply operation; establishes reference for input/output common-mode range. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Enables full utilization of 2.5V–5.5V supply range, delivering >4.8Vpp output on 5V rail into 1kΩ load. |
| Ground-sensing input range | Accepts input signals down to V– – 0.1V, supporting direct connection to 0V-referenced sensors or DAC outputs. |
| Thermal shutdown protection | Prevents permanent damage during overload; disables output above 160°C junction temperature and recovers autonomously at 140°C. |
| Low input bias current | 3pA typical - minimizes offset drift and loading error in high-impedance photodiode or piezoelectric sensor interfaces. |
| Video-optimized distortion performance | –81dBc 2nd harmonic / –93dBc 3rd harmonic at 1MHz ensures clean signal reproduction in composite video and optical networking. |
Applications
| Video Processing | Ultrasound Imaging |
|---|---|
Use Scenario: Driving 75Ω coaxial cable in SD/HD video distribution systems with minimal gain/phase error. IC Role / Device Role / Timing Role: Final-stage video buffer amplifier ensuring NTSC/PAL compliance. Use Value: 0.02% differential gain and 0.05° differential phase meet broadcast video fidelity standards without external trimming. | Use Scenario: Amplifying weak echo signals from piezoelectric transducers in portable ultrasound probes. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth receiver channel amplifier. Use Value: 5.8nV/√Hz input voltage noise and 450MHz bandwidth preserve time-domain resolution of microsecond-scale echoes. |
| Photodiode Transimpedance Amp | High-Speed ADC Driver |
Use Scenario: Converting photocurrent from high-speed optical receivers (e.g., fiber-to-the-home ONUs) into voltage. IC Role / Device Role / Timing Role: Transimpedance amplifier with programmable gain and bandwidth. Use Value: Ultra-low 3pA input bias current prevents DC error accumulation; rail-to-rail output interfaces directly to 12-bit+ ADC references. | Use Scenario: Buffering and driving analog inputs of 10–12-bit, 50+ MSPS ADCs in communications test equipment. IC Role / Device Role / Timing Role: High-fidelity input driver maintaining signal integrity through acquisition window. Use Value: 30ns 0.1% settling time and 75MHz 0.1dB gain flatness ensure accurate sampling of multi-tone RF waveforms. |
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 |
|---|---|---|---|
| OPA2355AIDGKT | Includes shutdown control (pin 1), 200MHz GBW, rail-to-rail I/O, but lower slew rate (145V/µs) and higher input noise (7.5nV/√Hz). | Better suited for power-gated portable systems; less ideal for video or ultrafast settling. | Select when system-level power management requires enable/disable capability and bandwidth <200MHz suffices. |
| OPA2691U | Current-feedback architecture, 320MHz bandwidth, 2100V/µs slew rate, but input common-mode range excludes ground and higher quiescent current (12.5mA/ch). | Optimized for very high slew-rate applications (e.g., pulse amplification), not ground-referenced DC-coupled paths. | Choose only when >360V/µs slew is mandatory and input cannot go below V–; avoid for single-supply sensor interfaces. |
Compared with OPA2355AIDGKT and OPA2691U, the OPA2356AIDGKT uniquely balances ground-sensing input, rail-to-rail output, low noise, and video-grade distortion in a dual VSSOP-8 package - making it optimal for space-constrained, single-supply, high-fidelity analog signal chains where channel isolation and DC precision matter.
Availability
OPA2356AIDGKT is available at Aetrix Electronics and suitable for video processing, ultrasound imaging, photodiode transimpedance amplification, and high-speed ADC driver applications requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for OPA2356AIDGKT 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 OPA2356AIDGKT belongs to TI's OPAx356 series of high-speed CMOS op amps, designed specifically for demanding video, medical imaging, optical networking, and instrumentation applications where bandwidth, fidelity, and single-supply operation are critical.
FAQ
What is the operating temperature range for the OPA2356AIDGKT?
The OPA2356AIDGKT is specified over the extended industrial temperature range of –40°C to +125°C. Its absolute maximum operating temperature is +150°C, and thermal shutdown activates at 160°C junction temperature. This makes OPA2356AIDGKT suitable for under-hood automotive modules, industrial video encoders, and medical ultrasound equipment where ambient temperatures exceed standard commercial limits.
Does the OPA2356AIDGKT support single-supply operation?
Yes, the OPA2356AIDGKT supports true single-supply operation from 2.5V to 5.5V. Its input common-mode range extends 100mV below V– (ground) and up to 1.5V below V+, while its output swings within 100mV of both rails. This allows direct interfacing with 0V-referenced sensors, DACs, and ADCs without level-shifting circuitry - a key advantage of the OPA2356AIDGKT in battery-powered and embedded systems.
What is the maximum continuous output current for the OPA2356AIDGKT?
The OPA2356AIDGKT provides ±60mA continuous output current per channel, with peak capability up to ±100mA at VS = +5V. However, the datasheet explicitly recommends limiting continuous DC current to ±60mA to maintain output voltage swing and thermal stability. Exceeding this may cause excessive self-heating and reduced reliability - a critical design constraint for sustained video line driving or high-current transimpedance applications using the OPA2356AIDGKT.
How does the OPA2356AIDGKT handle capacitive loads?
The OPA2356AIDGKT is not inherently unity-gain stable into heavy capacitive loads. For loads >50pF, an external series resistor (RS) must be added between the output and capacitance - e.g., 36Ω for 47pF or 24Ω for 100pF - to maintain phase margin. The recommended RS vs. CL curve in the OPA2356AIDGKT datasheet ensures stable operation without peaking or oscillation, especially critical in LCD panel drivers or long-cable video routing.
Is the OPA2356AIDGKT pin-compatible with other dual op amps in VSSOP-8?
No, the OPA2356AIDGKT has a non-standard VSSOP-8 pinout: Pin 1 = V+, Pin 2 = Out A, Pin 3 = –In A, Pin 4 = +In A, Pin 5 = –In B, Pin 6 = +In B, Pin 7 = Out B, Pin 8 = V–. This differs from industry-standard dual op amp pinouts (e.g., SO-8 or MSOP-8 variants of LMV358 or OPA2340). PCB layout must follow the exact OPA2356AIDGKT pin mapping - incorrect routing will result in functional failure.
OPA2356AIDGKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- 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 (x2 Channels)
- 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-VSSOP
OPA2356AIDGKT FAQ
1.How can I place an order for OPA2356AIDGKT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2356AIDGKT 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 OPA2356AIDGKT reliable?
The price and inventory of OPA2356AIDGKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2356AIDGKT is usually 5 days.
3.What payment methods are accepted for OPA2356AIDGKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2356AIDGKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2356AIDGKT?
OPA2356AIDGKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2356AIDGKT 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 OPA2356AIDGKT?
For technical support, including OPA2356AIDGKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2356AIDGKT requirements.
6.How does Aetrix verify that OPA2356AIDGKT is sourced from the original manufacturer or authorized distributors?
All OPA2356AIDGKT 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 OPA2356AIDGKT meets industry standards.
7.What is the process for return or replacement of OPA2356AIDGKT?
All OPA2356AIDGKT units undergo pre-shipment inspection (PSI). If there is an issue with OPA2356AIDGKT, 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 OPA2356AIDGKT part is unused and in its original packaging.
Return procedure for OPA2356AIDGKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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