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Texas Instruments OPA3355EA/2K5
- Part No.:
- OPA3355EA/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA3355EA/2K5.pdf
- Description:
- IC AMP VOLTAGE FEEDBACK 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:208
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Product details
Overview
OPA3355EA/2K5 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, and 0.02% differential gain error at NTSC video frequencies - enabling precision composite video buffering in broadcast and medical imaging systems.
For engineers reviewing the OPA3355EA/2K5 datasheet, OPA3355EA/2K5 pinout, OPA3355EA/2K5 application, or OPA3355EA/2K5 equivalent, key selection criteria include its triple-channel independence, 30 ns disable time, 100 mV rail-to-rail output swing at 150 Ω load, and SOIC-14 package compatibility with industrial temperature range (–40°C to +125°C) operation.
Technical Context
The OPA3355EA/2K5 implements a voltage-feedback CMOS architecture optimized for single-supply operation from 2.5 V to 5.5 V, with input common-mode range extending 100 mV below ground and up to 1.5 V below V+. Its three fully isolated amplifiers minimize crosstalk (–70 dB at 5 MHz), supporting simultaneous high-fidelity signal paths in multi-channel video or sensor front-ends.
Each channel integrates independent enable logic referenced to V–, delivering 3.4 µA shutdown current per amplifier and fast 100 ns enable / 30 ns disable transitions. Thermal shutdown activates at 160°C junction temperature and resets at 140°C, ensuring robustness under sustained output loading up to ±60 mA continuous.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 200 MHz - supports stable closed-loop gain ≥2 with >100 MHz small-signal bandwidth at RL = 150 Ω |
| Unity-gain bandwidth | 450 MHz - enables unity-gain stable video follower configurations with minimal phase margin compromise |
| Input voltage noise density | 5.8 nV/√Hz at 1 MHz - preserves SNR in photodiode transimpedance and ADC driver applications |
| Differential gain error | 0.02% at NTSC - meets broadcast-grade video fidelity without external calibration |
| Rail-to-rail output swing | Within 100 mV of rails at 150 Ω - maximizes dynamic range in 3.3 V or 5 V single-supply systems |
| Shutdown current per channel | 3.4 µA - reduces total quiescent draw to <11 µA in idle triple-channel mode |
| Enable/disable timing | 100 ns enable / 30 ns disable - allows precise gating for time-division multiplexed outputs |
Pinout & Package
OPA3355EA/2K5 is housed in a 14-pin SOIC (D) package measuring 8.65 mm × 3.91 mm, rated for –40°C to +125°C operation. The package supports standard surface-mount reflow profiles and provides thermal resistance θJA = 85.3°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | ENABLE A/B/C | Digital TTL-compatible control inputs; low = disabled (high-Z output), high = active; internal 100-kΩ pullup to V+ |
| 4 | V+ | Positive supply rail - accepts 2.5 V to 5.5 V single supply or +1.25 V to +2.75 V half of dual supply |
| 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 configuration |
| 7, 8, 14 | OUT A/B/C | Amplifier outputs - rail-to-rail capable, high-impedance when disabled, thermally protected |
| 11 | V– | Negative supply rail - referenced for enable logic and input common-mode; may be ground in single-supply use |
Key Features
| Feature | Design Value |
|---|---|
| Triple-channel isolation | –70 dB crosstalk at 5 MHz ensures independent signal integrity across all three amplifiers |
| Video-optimized linearity | 0.02% differential gain and 0.05° differential phase meet SMPTE/EBU broadcast standards |
| Fast enable/disable control | 30 ns disable time enables sub-ns timing resolution in gated sampling or multiplexed output architectures |
| Low-input-bias-current CMOS input | 3 pA typical bias current minimizes offset drift in high-impedance sensor interfaces and photodiode TIA designs |
| Thermal protection | Automatic shutdown at 160°C junction temperature prevents latch-up or permanent damage during overload |
Applications
| Video Processing | Ultrasound Beamforming |
|---|---|
|
Use Scenario: Composite NTSC/PAL video signal buffering and distribution in broadcast encoders and medical monitors. IC Role / Device Role / Timing Role: Triple-channel video amplifier providing simultaneous sync, luminance, and chroma path conditioning with matched group delay. Use Value: 0.02% differential gain error eliminates color distortion without post-processing, preserving clinical image fidelity in ultrasound display subsystems. |
Use Scenario: Low-noise, high-bandwidth amplification of echo return signals across 128+ transducer channels in portable ultrasound systems. IC Role / Device Role / Timing Role: Channel-isolated gain stage preceding ADC sampling, leveraging 450-MHz unity-gain bandwidth for >20 MHz RF envelope preservation. Use Value: 5.8 nV/√Hz input noise and –70 dB crosstalk maintain SNR across parallel receive paths, directly improving image resolution. |
| Photodiode Transimpedance | ADC Input Buffering |
|
Use Scenario: High-gain transimpedance amplification of weak photocurrents from low-light biomedical sensors or optical receivers. IC Role / Device Role / Timing Role: Precision current-to-voltage converter with ultra-low input bias current (3 pA) and wide bandwidth for fast pulse detection. Use Value: Sub-picoampere input bias avoids signal corruption in femtoamp-level photocurrent measurements, enabling accurate low-light quantification. |
Use Scenario: Driving SAR or pipeline ADC inputs in high-speed data acquisition systems requiring full-scale settling within nanoseconds. IC Role / Device Role / Timing Role: Unity-gain buffer isolating source impedance from ADC input capacitance while maintaining 0.1% settling in 30 ns. Use Value: 300 V/µs slew rate and 450-MHz bandwidth ensure distortion-free 12-bit+ conversion at multi-MSPS sample rates. |
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 version in SOT-23-6; identical electrical specs but no multi-channel crosstalk advantage | Suitable only for single-path designs; lacks integrated triple-channel synchronization or space savings | Select when board area is constrained and only one high-speed channel is required |
| OPA2355IDGS | Dual-channel VSSOP-10 variant; same GBW and noise, but –90 dB crosstalk (superior to OPA3355's –70 dB) | Better suited for dual-path correlated signal processing (e.g., I/Q demodulation), not triple-path systems | Choose for dual-channel applications demanding lowest possible inter-channel interference |
Compared with OPA3355EA/2K5, the OPA355IDBVR offers identical per-channel performance in minimal footprint but lacks multi-channel integration, while the OPA2355IDGS provides superior dual-channel isolation yet cannot replace triple-channel functionality without redesign.
Availability
OPA3355EA/2K5 is available at Aetrix Electronics and suitable for video processing, ultrasound beamforming, and photodiode transimpedance amplifier applications requiring stable component supply, long-term industrial temperature support, and guaranteed SOIC-14 packaging consistency.
Supply support for OPA3355EA/2K5 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 over 90 years of innovation in precision amplifiers and signal chain solutions.
The OPA3355 belongs to TI's high-speed precision op amp product line, engineered specifically for wideband video, medical imaging, and optical networking applications where low noise, rail-to-rail output, and fast enable/disable control are critical.
FAQ
What is the operating supply voltage range for the OPA3355EA/2K5?
The OPA3355EA/2K5 operates from 2.5 V to 5.5 V on a single supply or ±1.25 V to ±2.75 V on dual supplies. Its input common-mode range extends 100 mV below ground and up to 1.5 V below V+, making it ideal for 3.3 V and 5 V systems. Absolute maximum supply voltage is 7.5 V; exceeding this risks permanent damage. The OPA3355EA/2K5 maintains specified performance across the full –40°C to +125°C temperature range.
Does the OPA3355EA/2K5 support rail-to-rail input and output operation?
The OPA3355EA/2K5 features rail-to-rail output swing (within 100 mV of V+ and V– at 150 Ω load) but does not support rail-to-rail input - its input common-mode range extends from (V–) – 0.1 V to (V+) – 1.5 V. This allows ground-referenced inputs in single-supply configurations while maintaining precision near the positive rail. Input bias current remains stable at 3 pA across the valid common-mode range, critical for high-impedance sensor interfaces.
How does the enable function work on the OPA3355EA/2K5?
The OPA3355EA/2K5 has three independent enable pins (pins 1, 2, 3) - one per amplifier channel. A logic-high voltage (>2 V) enables the corresponding channel; a logic-low (<0.8 V) disables it, reducing quiescent current to 3.4 µA per channel and placing the output in high-impedance state. Each enable input includes an internal 100-kΩ pullup to V+, so leaving the pin open defaults to enabled operation. Enable timing is 100 ns turn-on and 30 ns turn-off.
What is the thermal shutdown behavior of the OPA3355EA/2K5?
The OPA3355EA/2K5 incorporates junction-temperature-based thermal shutdown that activates at 160°C and resets automatically when the die cools to 140°C. This protects against sustained overload conditions, such as continuous output currents above ±60 mA or excessive ambient temperatures. The SOIC-14 package exhibits θJA = 85.3°C/W, meaning power dissipation >140 mW can trigger shutdown in still-air environments - design margins should account for PCB copper area and airflow.
Can the OPA3355EA/2K5 drive heavy capacitive loads?
The OPA3355EA/2K5 is not unity-gain compensated for direct capacitive loads >50 pF. Driving larger loads (e.g., ADC input capacitance or long cables) requires series isolation resistance (RS); recommended values range from 36 Ω for 47 pF to 80 Ω for 100 pF, per TI's Figure 15. Without RS, instability manifests as peaking or ringing in step response. For 150 Ω resistive loads, the OPA3355EA/2K5 delivers full 450-MHz bandwidth and 300 V/µs slew rate as specified.
OPA3355EA/2K5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-TSSOP
OPA3355EA/2K5 FAQ
1.How can I place an order for OPA3355EA/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA3355EA/2K5 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 OPA3355EA/2K5 reliable?
The price and inventory of OPA3355EA/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA3355EA/2K5 is usually 5 days.
3.What payment methods are accepted for OPA3355EA/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA3355EA/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA3355EA/2K5?
OPA3355EA/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA3355EA/2K5 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 OPA3355EA/2K5?
For technical support, including OPA3355EA/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA3355EA/2K5 requirements.
6.How does Aetrix verify that OPA3355EA/2K5 is sourced from the original manufacturer or authorized distributors?
All OPA3355EA/2K5 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 OPA3355EA/2K5 meets industry standards.
7.What is the process for return or replacement of OPA3355EA/2K5?
All OPA3355EA/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with OPA3355EA/2K5, 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 OPA3355EA/2K5 part is unused and in its original packaging.
Return procedure for OPA3355EA/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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