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Texas Instruments OPA3355UA/2K5G4
- Part No.:
- OPA3355UA/2K5G4
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA3355UA/2K5G4.pdf
- Description:
- IC AMP VOLTAGE FEEDBACK 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,119
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Product details
Overview
OPA3355UA/2K5G4 from Texas Instruments is a triple-channel, high-speed, rail-to-rail output CMOS operational amplifier with digital shutdown control, designed for video signal conditioning and wideband analog processing. It delivers 200-MHz gain-bandwidth product, 450-MHz unity-gain bandwidth, 5.8 nV/√Hz input voltage noise, 0.02% differential gain error, and operates from 2.5 V to 5.5 V single supply - enabling precision NTSC/PAL video buffering in compact SOIC-14 systems.
For engineers reviewing the OPA3355UA/2K5G4 datasheet, OPA3355UA/2K5G4 pinout, OPA3355UA/2K5G4 application, or OPA3355UA/2K5G4 equivalent, key selection criteria include channel count (3), enable-controlled power-down (3.4 µA per channel), 75 MHz 0.1-dB gain flatness, ±60 mA output drive capability, and –40°C to +125°C operation in SOIC-14 package.
Technical Context
The OPA3355UA/2K5G4 implements a voltage-feedback CMOS architecture optimized for unity-gain stability and fast settling (30 ns to 0.1%). Its input stage includes ground-sensing capability (common-mode range extends 100 mV below V–), while the rail-to-rail output swings within 100 mV of both rails at 150 Ω load. Each channel features independent enable logic with 100 ns enable / 30 ns disable timing.
Thermal shutdown activates at 160°C junction temperature and resets at 140°C. The device supports single-supply operation down to 2.5 V and maintains 84 dB open-loop gain across –40°C to +125°C, with CMRR ≥66 dB over full common-mode range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 200 MHz - enables stable closed-loop operation up to G = 10 with predictable phase margin |
| Unity-gain bandwidth | 450 MHz - supports high-fidelity 1× buffering of >200 MHz signals without peaking |
| Input voltage noise density | 5.8 nV/√Hz at 1 MHz - preserves SNR in low-level video and photodiode transimpedance stages |
| Differential gain/phase error | 0.02% / 0.05° at NTSC - meets broadcast-grade video fidelity requirements |
| Supply voltage range | 2.5 V to 5.5 V - compatible with Li-ion, USB, and industrial 3.3 V/5 V rails without level-shifting |
| Quiescent current per channel | 8.3 mA at 5 V - balances speed and power for multi-channel active filter or ADC driver designs |
| Shutdown current per channel | 3.4 µA - reduces system standby power by >99.9% when channels are gated off |
Pinout & Package
OPA3355UA/2K5G4 is housed in a 14-pin SOIC package (8.65 mm × 3.91 mm body size) rated for –40°C to +125°C operation. Pin functions are electrically isolated per channel to minimize crosstalk (–70 dB at 5 MHz).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | ENABLE A/B/C | Digital TTL-compatible shutdown inputs - low = high-Z output, high = active amplification |
| 4 | V+ | Positive supply rail - accepts 2.5 V to 5.5 V; decoupling required within 1 cm |
| 5, 10, 12 | +IN A/B/C | Noninverting inputs - support rail-to-rail common-mode range including ground |
| 6, 9, 13 | –IN A/B/C | Inverting inputs - matched to +IN pins for precision differential gain configurations |
| 7, 8, 14 | OUT A/B/C | Outputs - rail-to-rail swing (within 100 mV), capable of ±60 mA continuous drive |
| 11 | V– | Negative supply rail - referenced to system ground in single-supply mode |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Within 100 mV of V+ and V– at 150 Ω load - maximizes dynamic range in 3.3 V systems |
| Independent per-channel shutdown | Three dedicated ENABLE pins allow selective channel gating without affecting others - essential for time-multiplexed video routing |
| Low input bias current | 3 pA typical - prevents signal degradation in high-impedance photodiode or sensor interfaces |
| Fast enable/disable timing | 100 ns enable / 30 ns disable - supports gated amplification in burst-mode data acquisition |
| Thermal shutdown protection | Activates at 160°C junction temperature - prevents latch-up during overload or poor heatsinking |
Applications
| Video Processing | Photodiode Transimpedance Amplifier |
|---|---|
Use Scenario: NTSC/PAL composite video signal buffering and distribution in broadcast equipment and medical imaging displays. IC Role / Device Role / Timing Role: Triple-channel op amp providing simultaneous sync, luminance, and chrominance path amplification with matched gain and phase. Use Value: 0.02% differential gain and 0.05° differential phase error preserve color fidelity and edge sharpness without external calibration. | Use Scenario: Converting weak photocurrents from high-impedance silicon photodiodes into stable voltage outputs in optical analyzers. IC Role / Device Role / Timing Role: Low-noise, high-input-impedance transimpedance amplifier with rail-to-rail output for full-scale signal capture. Use Value: 5.8 nV/√Hz input voltage noise and 3 pA input bias current minimize Johnson and shot noise contributions in sub-pA detection. |
| ADC Input Buffer | Active Filter Bank |
Use Scenario: Driving SAR and pipeline ADCs in high-speed data acquisition systems requiring >10-bit ENOB at 1 MSPS. IC Role / Device Role / Timing Role: High-slew-rate (300 V/µs) buffer isolating ADC front-end from source impedance variations. Use Value: 30 ns 0.1% settling time ensures accurate sampling of fast transient signals without aperture uncertainty. | Use Scenario: Implementing multi-pole anti-aliasing or reconstruction filters in ultrasound beamforming modules. IC Role / Device Role / Timing Role: Three independent amplifiers configured as cascaded Sallen-Key or MFB stages. Use Value: Channel isolation >70 dB at 5 MHz prevents inter-stage coupling that would distort filter response shape. |
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 |
|---|---|---|---|
| OPA355IDBVR | Single-channel, SOT-23-6, same GBW/noise/specs but no multi-channel integration | Requires three discrete units plus board area for equivalent functionality | Select when space-constrained PCB layout favors distributed amplification or channel independence is critical |
| LMH6629MA/NOPB | Single-channel, 1.5 GHz GBW, higher power (12.5 mA), no shutdown, different pinout | Lacks enable control and triple-channel consolidation; better suited for ultra-wideband RF IF stages | Select only when >500 MHz small-signal bandwidth is mandatory and power budget allows |
Compared with OPA3355UA/2K5G4, OPA355IDBVR offers identical per-channel performance in smaller footprint but requires replication for multi-channel use, while LMH6629MA/NOPB trades shutdown capability and integration for raw bandwidth - making OPA3355UA/2K5G4 optimal for power-aware, space-limited video and instrumentation designs needing three synchronized channels.
Availability
OPA3355UA/2K5G4 is available at Aetrix Electronics and suitable for video processing, photodiode transimpedance amplification, and ADC input buffering requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for OPA3355UA/2K5G4 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 specializing in analog and embedded processing technologies, with decades of expertise in high-performance op amps and signal chain solutions.
The OPA3355 belongs to TI's OPAx355 family of high-speed CMOS op amps engineered specifically for broadcast video, medical ultrasound, and optical networking - where low distortion, precise gain flatness, and multi-channel synchronization are critical.
FAQ
What is the operating temperature range for OPA3355UA/2K5G4?
The OPA3355UA/2K5G4 is specified for continuous operation from –40°C to +125°C ambient temperature, with thermal shutdown activating at 160°C junction temperature and resetting at 140°C. This extended range supports deployment in automotive infotainment displays, industrial vision systems, and outdoor medical equipment where ambient extremes are common. All electrical parameters in the datasheet are guaranteed across this full range.
Does OPA3355UA/2K5G4 support true rail-to-rail input?
No, the OPA3355UA/2K5G4 does not feature rail-to-rail input - its common-mode input voltage range extends from 100 mV below V– to 1.5 V below V+, enabling ground-referenced operation on single supply but not full rail coverage. However, it does provide rail-to-rail output swing (within 100 mV of both rails at 150 Ω). For true RRI+RRO, consider TI's OPA365 or OPA837 families - but those lack the OPA3355UA/2K5G4's 0.02% differential gain performance.
How many independent enable pins does OPA3355UA/2K5G4 have?
The OPA3355UA/2K5G4 has three independent enable pins: ENABLE A (Pin 1), ENABLE B (Pin 2), and ENABLE C (Pin 3). Each controls one amplifier channel separately, allowing selective shutdown without affecting other channels. This enables dynamic power management in time-division multiplexed systems - for example, disabling unused video channels during blanking intervals while maintaining active signal paths. The OPA3355UA/2K5G4 enable logic is TTL-compatible with 0.8 V low and 2.0 V high thresholds.
What is the maximum continuous output current per channel of OPA3355UA/2K5G4?
The OPA3355UA/2K5G4 supports ±60 mA continuous output current per channel into resistive loads, with peak capability up to ±100 mA at 5 V supply. Exceeding ±60 mA continuously is not recommended due to thermal limitations - the device incorporates on-chip thermal shutdown that activates at 160°C junction temperature. For sustained high-current operation, ensure adequate PCB copper area and airflow, and verify output voltage swing remains within specification using Figure 21/22 from the OPA3355UA/2K5G4 datasheet.
Can OPA3355UA/2K5G4 be used with a single 3.3-V supply?
Yes, the OPA3355UA/2K5G4 is fully specified for single-supply operation from 2.5 V to 5.5 V, including 3.3 V. At 3.3 V, it delivers 75 MHz 0.1-dB gain flatness, 0.02% differential gain, and rail-to-rail output swing within 100 mV of both rails - making it ideal for portable video monitors, handheld ultrasound probes, and FPGA-based data converters powered from standard 3.3-V LDOs. Quiescent current per channel is ~7.5 mA at 3.3 V, and shutdown current drops to ~3.4 µA.
OPA3355UA/2K5G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Voltage Feedback
- Output Type:
- Rail-to-Rail
- Number of Circuits:
- 3
- -3db Bandwidth:
- 450 MHz
- Slew Rate:
- 360V/µs
- Current - Supply:
- 8.3 mA
- Current - Output / Channel:
- 100 mA
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 5.5V, ±1.25V ~ 2.75V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-SOIC
OPA3355UA/2K5G4 FAQ
1.How can I place an order for OPA3355UA/2K5G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA3355UA/2K5G4 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 OPA3355UA/2K5G4 reliable?
The price and inventory of OPA3355UA/2K5G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA3355UA/2K5G4 is usually 5 days.
3.What payment methods are accepted for OPA3355UA/2K5G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA3355UA/2K5G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA3355UA/2K5G4?
OPA3355UA/2K5G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA3355UA/2K5G4 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 OPA3355UA/2K5G4?
For technical support, including OPA3355UA/2K5G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA3355UA/2K5G4 requirements.
6.How does Aetrix verify that OPA3355UA/2K5G4 is sourced from the original manufacturer or authorized distributors?
All OPA3355UA/2K5G4 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 OPA3355UA/2K5G4 meets industry standards.
7.What is the process for return or replacement of OPA3355UA/2K5G4?
All OPA3355UA/2K5G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA3355UA/2K5G4, 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 OPA3355UA/2K5G4 part is unused and in its original packaging.
Return procedure for OPA3355UA/2K5G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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