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Texas Instruments OPA2356AIDG4
- Part No.:
- OPA2356AIDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2356AIDG4.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,495
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Product details
Overview
OPA2356AIDG4 from Texas Instruments is a dual, 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, and rail-to-rail output swing within 100mV of the rails, enabling high-fidelity NTSC video amplification with 0.02% differential gain and 0.05° differential phase error.
For engineers reviewing the OPA2356AIDG4 datasheet, OPA2356AIDG4 pinout, OPA2356AIDG4 application, or OPA2356AIDG4 equivalent, key selection criteria include its –40°C to +125°C extended temperature range, 8.3mA per channel quiescent current, dual-channel crosstalk of –90dB at 5MHz, and SOIC-8 package compatibility with standard PCB layouts for video buffer and ADC/DAC interface designs.
Technical Context
The OPA2356AIDG4 employs a fully differential, complementary CMOS input stage supporting common-mode input range from (V–) –0.1V to (V+) –1.5V - including ground in single-supply operation. Its unity-gain stable architecture enables direct use as a voltage follower without external compensation.
Internal thermal shutdown activates at 160°C junction temperature and resets at 140°C, protecting against sustained overload. The dual amplifier channels operate independently with no shared bias circuitry, ensuring minimal inter-channel crosstalk and consistent dynamic performance across both channels under simultaneous full-scale output conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 450MHz - supports stable closed-loop operation at G = +1 with <1% gain error up to 75MHz (0.1dB flatness). |
| Slew Rate | 360V/µs - enables clean 2V step response in ≤8ns with <0.1% settling time of 30ns, critical for high-speed DAC output buffering. |
| Input Bias Current | 3pA typical - allows high-impedance sensor interfaces and photodiode transimpedance amplifier designs without significant offset drift. |
| Rail-to-Rail Output | Swing within 100mV of rails at 150Ω load - maximizes dynamic range in 3.3V or 5V systems, e.g., driving 75Ω back-terminated video lines. |
| Differential Gain/Phase | 0.02% / 0.05° at NTSC - meets broadcast-grade video fidelity requirements without external peaking networks. |
| Channel Crosstalk | –90dB at 5MHz - ensures isolated dual-channel operation in stereo audio, dual ADC input buffering, or multi-path timing circuits. |
| Supply Range | 2.5V to 5.5V single supply - simplifies power architecture in portable ultrasound and optical networking equipment. |
Pinout & Package
OPA2356AIDG4 is housed in an 8-pin SOIC (D) package per JEDEC MS-012, with 1.27mm pitch, 4.9mm × 3.9mm body, and gull-wing leads. Thermal resistance θJA is 125°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplifier A output capable of ±60mA continuous drive into 150Ω; rail-to-rail swing supports full-scale signal integrity. |
| 2 | Inverting Input A | High-impedance CMOS input (1013Ω || 1.5pF); accepts signals down to 100mV below ground in single-supply mode. |
| 3 | Non-Inverting Input A | Matches Pin 2 in impedance and ESD protection; enables precision differential or single-ended configurations. |
| 4 | V– | Power supply return; must be connected directly to low-inductance ground plane to maintain stability at >100MHz. |
| 5 | Non-Inverting Input B | Independent input for second amplifier; no internal coupling to Channel A - verified by –90dB crosstalk spec. |
| 6 | Inverting Input B | Identical electrical characteristics to Pin 2; supports matched dual feedback networks for stereo or parallel processing. |
| 7 | Output B | Functionally identical to Pin 1; drives independent loads without interaction - essential for dual ADC input buffers. |
| 8 | V+ | Positive supply rail; requires local 10µF ceramic + optional 1µF tantalum bypass to suppress harmonic distortion at RF loads. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stability | Operates unconditionally stable at G = +1 without external compensation components - reduces BOM count and layout area. |
| Ground-sensing input range | Accepts inputs 100mV below V–, enabling true single-supply operation with DC-coupled sensors or baseband video sources. |
| Low 5.8nV/√Hz input noise | Maintains SNR >70dB in 10MHz bandwidth applications like photodiode transimpedance amplifiers or ultrasound receive chains. |
| Thermal shutdown protection | Automatically disables output at 160°C junction temperature and recovers autonomously at 140°C - prevents latch-up during transient overloads. |
| Microsize SOIC-8 footprint | Standard 8-pin SOIC package enables drop-in replacement in existing video amplifier layouts without redesigning land patterns or routing. |
Applications
| Video Processing | Ultrasound Imaging |
|---|---|
Use Scenario: Amplifying composite NTSC/PAL video signals before distribution to multiple monitors or digitization stages. IC Role / Device Role / Timing Role: Dual-channel video buffer with precise gain/phase matching between luminance and chrominance paths. Use Value: 0.02% differential gain and 0.05° differential phase error preserve color fidelity without external calibration or peaking filters. | Use Scenario: Receiving and conditioning weak echo signals from piezoelectric transducers in portable ultrasound systems. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth preamplifier in the analog front-end (AFE), operating from 3.3V single supply. Use Value: 5.8nV/√Hz input noise and 450MHz bandwidth enable detection of microvolt-level echoes above 10MHz without signal degradation. |
| Optical Networking | ADC Input Buffering |
Use Scenario: Driving tunable laser diode bias control loops requiring fast, low-distortion current modulation. IC Role / Device Role / Timing Role: High-slew-rate transconductance amplifier shaping control voltage for wavelength tuning actuators. Use Value: 360V/µs slew rate ensures sub-10ns response to digital control updates, maintaining tight wavelength lock in DWDM systems. | Use Scenario: Isolating and driving high-resolution SAR or pipeline ADC inputs in data acquisition systems. IC Role / Device Role / Timing Role: Dual-channel unity-gain buffer providing low-output-impedance drive to two independent ADC channels. Use Value: Rail-to-rail output swing and 30ns 0.1% settling time ensure full-scale accuracy and minimal aperture jitter in 16-bit+ converters. |
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 mode (IQ <1µA off), lower GBW (200MHz), same SOIC-8 package. | Preferred where power cycling or standby modes are required; not suitable for always-on video paths. | Select OPA2355AIDGKT only if system-level power sequencing mandates shutdown capability - OPA2356AIDG4 offers superior bandwidth and video specs. |
| THS4121CD | Differential input/output architecture; ±15V supply capable; higher supply current (12mA/ch); different pinout. | Used in balanced line drivers or high-voltage instrumentation; incompatible pinout and layout. | Choose THS4121CD only for fully differential signal chains requiring >±5V swing - OPA2356AIDG4 is optimal for cost-sensitive, single-supply, high-fidelity video and mixed-signal interfaces. |
Compared with OPA2355AIDGKT and THS4121CD, the OPA2356AIDG4 uniquely balances ultra-high bandwidth (450MHz), video-optimized distortion performance, and SOIC-8 compatibility - making it the preferred choice for space-constrained, single-supply video and high-speed data converter applications where pin compatibility and proven NTSC fidelity are mandatory.
Availability
OPA2356AIDG4 is available at Aetrix Electronics and suitable for video processing, ultrasound imaging, and optical networking applications requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for OPA2356AIDG4 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 and high-speed signal conditioning.
The OPA2356AIDG4 belongs to TI's OPAx356 series - engineered specifically for wideband video, medical imaging, and communications infrastructure where unity-gain stability, rail-to-rail output, and sub-0.05° phase error are non-negotiable design requirements.
FAQ
What is the maximum operating temperature range for the OPA2356AIDG4?
The OPA2356AIDG4 is specified over an 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 to protect against permanent damage. This makes the OPA2356AIDG4 suitable for demanding environments such as automotive camera modules and industrial ultrasound equipment where ambient temperatures exceed 100°C.
Does the OPA2356AIDG4 support single-supply operation?
Yes, the OPA2356AIDG4 supports true single-supply operation from 2.5V to 5.5V. Its input common-mode range extends 100mV below ground (V–) and up to 1.5V below V+, while its rail-to-rail output swings within 100mV of both supply rails. This enables direct interfacing with ground-referenced sensors, video sources, and ADCs without level-shifting circuitry - a key advantage in battery-powered and compact video systems using the OPA2356AIDG4.
What is the small-signal bandwidth of the OPA2356AIDG4 at G = +2 with 150Ω load?
At G = +2 and RL = 150Ω, the OPA2356AIDG4 delivers a small-signal –3dB bandwidth of 170MHz. This value is confirmed in the Electrical Characteristics table under "Small-Signal Bandwidth" and is critical for applications such as HD video amplification and high-speed DAC output buffering where signal integrity beyond 100MHz is required. Performance remains stable due to its unity-gain compensation architecture.
How does the OPA2356AIDG4 handle capacitive loads?
The OPA2356AIDG4 requires external series resistance (RS) when driving capacitive loads >5.6pF to maintain stability. For example, RS = 36Ω is recommended for CL = 47pF, and RS = 24Ω for CL = 100pF. These values are derived from TI's recommended RS vs capacitive load curve and prevent peaking or oscillation. Direct connection to >100pF loads without RS risks instability - a key layout consideration when using the OPA2356AIDG4 to drive long traces or ADC input capacitance.
Is the OPA2356AIDG4 pin-compatible with other devices in the OPAx356 family?
Yes, the OPA2356AIDG4 in SOIC-8 (D) package shares identical pinout with OPA2356AID, OPA2356AIDR, and OPA356AID - all use the same 1–8 pin mapping for dual-channel operation. This allows direct substitution in existing designs without PCB modification. However, it is not pin-compatible with MSOP-8 (DGK) variants like OPA2356AIDGKR, which have different mechanical dimensions and thermal characteristics despite functional equivalence.
OPA2356AIDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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-SOIC
OPA2356AIDG4 FAQ
1.How can I place an order for OPA2356AIDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2356AIDG4 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 OPA2356AIDG4 reliable?
The price and inventory of OPA2356AIDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2356AIDG4 is usually 5 days.
3.What payment methods are accepted for OPA2356AIDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2356AIDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2356AIDG4?
OPA2356AIDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2356AIDG4 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 OPA2356AIDG4?
For technical support, including OPA2356AIDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2356AIDG4 requirements.
6.How does Aetrix verify that OPA2356AIDG4 is sourced from the original manufacturer or authorized distributors?
All OPA2356AIDG4 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 OPA2356AIDG4 meets industry standards.
7.What is the process for return or replacement of OPA2356AIDG4?
All OPA2356AIDG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2356AIDG4, 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 OPA2356AIDG4 part is unused and in its original packaging.
Return procedure for OPA2356AIDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2356AIDG4 Tags
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LM358DT
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LM358DR
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