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Texas Instruments OPA2356AIDGKR
- Part No.:
- OPA2356AIDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2356AIDGKR.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:649
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Product details
Overview
OPA2356AIDGKR from Texas Instruments is a dual, 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 0.02% differential gain / 0.05° differential phase-enabling precision NTSC video amplification in compact VSSOP-8 packaging.
For engineers reviewing the OPA2356AIDGKR datasheet, OPA2356AIDGKR pinout, OPA2356AIDGKR application, or OPA2356AIDGKR equivalent, key selection criteria include its 200MHz gain-bandwidth product, –40°C to +125°C extended temperature operation, low 5.8nV/√Hz input voltage noise, and channel-to-channel crosstalk of –90dB at 5MHz-critical for dual-channel high-fidelity signal paths.
Technical Context
The OPA2356AIDGKR implements a fully independent dual-amplifier architecture with no shared bias circuitry, ensuring minimal inter-channel interaction. Its CMOS input stage provides 3pA typical input bias current and common-mode input range extending 100mV below ground to 1.5V below V+, supporting true single-supply operation down to 2.5V.
Internal thermal shutdown activates at 160°C junction temperature and resets at 140°C, protecting against sustained overload. The output stage drives ±100mA peak into resistive loads and maintains 0.1dB gain flatness to 75MHz with 150Ω termination-meeting broadcast-grade video line-driving requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 450MHz - enables stable +1V/V follower configurations for high-frequency buffering without peaking. |
| Gain-Bandwidth Product | 200MHz - defines closed-loop bandwidth vs gain trade-off (e.g., 100MHz at G=+2). |
| Slew Rate | 360V/µs - supports fast 2V step settling in ≤30ns (0.1%) with minimal slewing distortion. |
| Input Voltage Noise | 5.8nV/√Hz @ 1MHz - preserves SNR in low-level signal amplification stages like photodiode transimpedance amps. |
| Differential Gain/Phase | 0.02% / 0.05° @ NTSC - meets broadcast video fidelity standards for composite signal processing. |
| Output Swing | Within 100mV of rails @ 150Ω - maximizes dynamic range in 3.3V or 5V single-supply systems. |
| Quiescent Current | 8.3mA per channel @ 5V - balances speed and power efficiency for portable or thermally constrained designs. |
| Crosstalk | –90dB @ 5MHz - ensures isolation between channels in dual-path filters or A/D input buffers. |
Pinout & Package
VSSOP-8 (DGK) package: ultra-thin, 3.0mm × 3.0mm body, 0.65mm pitch, 1.1mm max height-designed for space-constrained PCB layouts while maintaining thermal performance (θJA = 150°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V+) | Positive supply rail | Accepts 2.5V–5.5V single supply or ±1.25V–±2.75V dual supply; bypass with 10µF ceramic capacitor. |
| 2 (Out A) | Amplifier A output | Rail-to-rail capable; drives 150Ω video loads with <0.02% differential gain error. |
| 3 (–In A) | Inverting input A | High-impedance CMOS node; input bias current 3pA enables high-Z sensor interfaces. |
| 4 (+In A) | Non-inverting input A | Common-mode range extends 100mV below ground-supports AC-coupled single-supply inputs. |
| 5 (–In B) | Inverting input B | Electrically isolated from Channel A; crosstalk –90dB ensures independent dual-channel operation. |
| 6 (+In B) | Non-inverting input B | Identical specs to Pin 4; enables matched dual-path signal conditioning without layout coupling. |
| 7 (Out B) | Amplifier B output | Full performance symmetry with Pin 2; supports interleaved ADC input buffering or stereo video paths. |
| 8 (V–) | Negative supply rail / ground | Connected to system ground in single-supply mode; establishes reference for rail-to-rail output swing. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 100mV of V+ and V– rails at 150Ω load-preserves >96% of supply voltage dynamic range. |
| Ground-sensing input | Common-mode range includes 0V (extends 100mV below ground)-eliminates level-shifting in single-supply sensor front-ends. |
| Thermal shutdown protection | Auto-shutdown at 160°C junction temperature with 20°C hysteresis-prevents permanent damage during sustained overload. |
| Low input bias current | 3pA typical-minimizes voltage error in high-impedance transimpedance or active filter applications. |
| Video-optimized performance | 0.02% differential gain / 0.05° differential phase-meets SMPTE/ITU-R BT.601 broadcast video specifications. |
| Wide supply range | Operates from 2.5V to 5.5V-compatible with Li-ion battery, 3.3V logic, and 5V legacy systems without level translation. |
Applications
| Video Processing | Photodiode Transimpedance Amp |
|---|---|
Use Scenario: Amplifying and driving composite NTSC/PAL video signals in security cameras or broadcast encoders. IC Role / Device Role / Timing Role: Dual-channel video buffer and driver with precise gain/phase matching across luminance/chrominance paths. Use Value: 0.02% differential gain error ensures color fidelity over full 0–4.2MHz video bandwidth without external calibration. | Use Scenario: Converting weak current from high-impedance photodiodes in optical sensing or medical pulse oximetry. IC Role / Device Role / Timing Role: Low-noise, high-gain transimpedance amplifier with 5.8nV/√Hz input voltage noise and 3pA input bias. Use Value: Enables sub-picoampere current resolution without significant Johnson-Nyquist or bias-current-induced offset drift. |
| High-Speed ADC Input Buffer | Active Filter for Ultrasound Imaging |
Use Scenario: Driving SAR or pipeline ADC inputs in data acquisition systems requiring wideband, low-distortion sampling. IC Role / Device Role / Timing Role: Unity-gain stable buffer isolating ADC input capacitance from source impedance; settles to 0.1% in 30ns. Use Value: 360V/µs slew rate and 450MHz bandwidth prevent aperture uncertainty and harmonic distortion at multi-MSPS sample rates. | Use Scenario: Implementing 5–15MHz bandpass filters in portable ultrasound transducer front-ends. IC Role / Device Role / Timing Role: Dual op-amp configured as high-Q active filter with matched channel response for beamforming. Use Value: –90dB crosstalk at 5MHz ensures independent channel filtering without image artifact coupling between scan lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2355AIDGKR | Includes shutdown control (pin 1), 200MHz GBW, rail-to-rail I/O, but higher 9nV/√Hz noise and 0.05% diff gain. | Lacks thermal shutdown; requires external enable logic; less suitable for unattended video systems. | Select when power gating is required and 0.05% diff gain is acceptable for non-broadcast applications. |
| OPA2691IDGKR | Higher 320MHz GBW, 1800V/µs slew rate, but bipolar input (2.1µA IB), no rail-to-rail output, and 12mA IQ per channel. | Not ground-sensing; incompatible with single-supply sensor interfaces; higher power dissipation limits density. | Select only for ultra-high-speed (>200MHz) closed-loop gains where CMOS input limitations are unacceptable. |
Compared with OPA2355AIDGKR and OPA2691IDGKR, the OPA2356AIDGKR uniquely combines rail-to-rail output, ground-sensing input, thermal shutdown, and broadcast-grade video performance in a low-power VSSOP-8 package-making it optimal for space-constrained, single-supply, high-fidelity dual-channel analog signal chains.
Availability
OPA2356AIDGKR is available at Aetrix Electronics and suitable for video processing, ultrasound imaging, and optical networking applications requiring stable component supply, extended temperature support (–40°C to +125°C), and RoHS-compliant VSSOP packaging.
Supply support for OPA2356AIDGKR 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The OPAx356 series was designed specifically for high-fidelity video signal conditioning and wideband analog signal paths where speed, precision, and single-supply operation are critical-targeting broadcast equipment, medical imaging, and test instrumentation.
FAQ
What is the maximum operating supply voltage for OPA2356AIDGKR?
The OPA2356AIDGKR has an absolute maximum supply voltage of 7.5V (V+ to V–), but its specified operating range is 2.5V to 5.5V. Operation above 5.5V risks exceeding safe internal bias conditions and is not guaranteed. For reliable long-term performance, TI recommends staying within the 2.5V–5.5V range, with 5V being the most commonly used nominal supply in video and high-speed applications. The OPA2356AIDGKR must never be operated beyond 7.5V.
Does OPA2356AIDGKR support true single-supply operation with input signals at ground potential?
Yes, the OPA2356AIDGKR supports true single-supply operation with input common-mode voltage ranging from (V–) – 0.1V to (V+) – 1.5V. Since V– is typically connected to ground in single-supply configurations, this means the input can accept signals down to –100mV-fully encompassing 0V. This ground-sensing capability eliminates the need for level-shifting circuitry when interfacing with sensors, DAC outputs, or other ground-referenced sources in 3.3V or 5V systems using the OPA2356AIDGKR.
What is the thermal shutdown behavior of OPA2356AIDGKR?
The OPA2356AIDGKR incorporates an on-chip thermal shutdown circuit that disables both amplifiers when the junction temperature reaches 160°C. Normal operation resumes automatically once the die cools to approximately 140°C, providing 20°C hysteresis. This protection is critical during sustained output overload or poor PCB heat sinking. The shutdown is not latching-it recovers passively-and is fully characterized across the –40°C to +125°C ambient range. The OPA2356AIDGKR's VSSOP-8 package has θJA = 150°C/W, so proper copper pour and via stitching are recommended to avoid repeated shutdown events.
Can OPA2356AIDGKR drive a 75Ω back-terminated video cable directly?
Yes, the OPA2356AIDGKR is explicitly characterized to drive standard 75Ω back-terminated video cables. When properly terminated, the cable presents a purely resistive 150Ω load (75Ω source + 75Ω termination), which the OPA2356AIDGKR handles with 0.02% differential gain error and minimal phase shift. TI's datasheet confirms stable operation under these conditions without external current-limiting resistors. However, capacitive loads >5.6pF require series resistance (e.g., 36Ω for 47pF) at the output to maintain stability-details are provided in the "Recommended RS vs Capacitive Load" graph of the OPA2356AIDGKR datasheet.
How does channel-to-channel crosstalk affect dual-channel use of OPA2356AIDGKR?
The OPA2356AIDGKR achieves –90dB channel-to-channel crosstalk at 5MHz, meaning signal coupling from one amplifier to the other is attenuated by 90dB-equivalent to ~0.003% signal leakage. This performance is enabled by completely independent internal circuitry with no shared bias or supply nodes. In practice, this allows simultaneous use of both channels for time-aligned signal paths (e.g., I/Q demodulation, stereo audio, or dual ADC inputs) without measurable interference up to 5MHz. Beyond 5MHz, crosstalk degrades gradually but remains >–60dB up to 100MHz, preserving integrity in wideband applications using the OPA2356AIDGKR.
OPA2356AIDGKR 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
OPA2356AIDGKR FAQ
1.How can I place an order for OPA2356AIDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2356AIDGKR 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 OPA2356AIDGKR reliable?
The price and inventory of OPA2356AIDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2356AIDGKR is usually 5 days.
3.What payment methods are accepted for OPA2356AIDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2356AIDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2356AIDGKR?
OPA2356AIDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2356AIDGKR 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 OPA2356AIDGKR?
For technical support, including OPA2356AIDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2356AIDGKR requirements.
6.How does Aetrix verify that OPA2356AIDGKR is sourced from the original manufacturer or authorized distributors?
All OPA2356AIDGKR 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 OPA2356AIDGKR meets industry standards.
7.What is the process for return or replacement of OPA2356AIDGKR?
All OPA2356AIDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2356AIDGKR, 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 OPA2356AIDGKR part is unused and in its original packaging.
Return procedure for OPA2356AIDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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