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Texas Instruments OPA361AIDCKT
- Part No.:
- OPA361AIDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
OPA361AIDCKT.pdf
- Description:
- IC AMP GENERAL PURPOSE SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,101
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Product details
Overview
OPA361AIDCKT from Texas Instruments is a high-speed, single-supply video amplifier optimized for 3V portable applications. It integrates fixed gain (5.2 V/V), a 2-pole DAC reconstruction filter (9 MHz cutoff), internal level shift for DC-coupled sync-tip preservation, rail-to-rail output swing (within 5 mV of GND), and TV-detection support-enabling automatic video start/stop in camera phones interfacing with OMAP242x or DaVinci processors.
For engineers reviewing the OPA361AIDCKT datasheet, OPA361AIDCKT pinout, OPA361AIDCKT application, or OPA361AIDCKT equivalent, this page delivers verified electrical parameters, SC70-6 package layout, TV-detection implementation guidance, and validated alternatives for portable video signal conditioning where DC-coupled output, low quiescent current (5.3 mA), and 0.5 VPP DAC compatibility are critical.
Technical Context
The OPA361AIDCKT employs a Sallen-Key 2-pole filter with 9 MHz −3 dB cutoff to reconstruct video DAC outputs while suppressing 54 MHz sampling aliases by 23 dB. Its input common-mode range includes ground (0 V to 0.55 V at 3.3 V supply), enabling direct DC coupling from video DACs without AC-blocking capacitors.
Internal circuitry includes a dedicated level-shift stage that offsets the output by ~11 mV (typical) to prevent sync-pulse clipping at 0 V input, and a shutdown path that disconnects feedback resistors to eliminate pull-up leakage (<300 pA) during TV-detect cycles-key for battery-sensitive mobile video interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 5.2 V/V (fixed internal resistor ratio; stable over temperature, ±0.5% matching) |
| Supply Voltage | 2.5 V to 3.3 V (fully specified across −40°C to +125°C; bypass with 100 nF ceramic) |
| Output Swing | Rail-to-rail: within 5 mV of GND and 250 mV of V+ into 150 Ω (supports DC-coupled 75 Ω video loads) |
| Filter Cutoff | 9 MHz (2-pole Sallen-Key; −0.1 dB flatness at 4.5 MHz, −23 dB at 54 MHz) |
| Quiescent Current | 5.3 mA (enabled, 2.8 V supply); <1.5 µA (shutdown; enables battery life extension in intermittent TV-out) |
| TV-Detect Support | Logic-compatible enable/disable (0.35 V LOW / 1.3 V HIGH thresholds); enables automated load detection via GPIO |
| Differential Gain/Phase | 1.2% / 1.6° (measured at 150 Ω load; meets NTSC/PAL broadcast-grade video fidelity) |
Pinout & Package
OPA361AIDCKT is housed in a RoHS-compliant SC70-6 package (2.0 mm × 2.1 mm, 1.1 mm max height), optimized for space-constrained mobile PCBs. Pin 1 is marked by an index area on the top surface; the package conforms to JEDEC MO-203 variation AB and has MSL Level-2-260°C-1 year rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Positive supply rail | Accepts 2.5 V–3.3 V; requires local 100 nF ceramic bypass to GND |
| 2 - Enable | Shutdown control input | CMOS-compatible (1.8 V logic); <0.35 V disables, >1.3 V enables; internal pull-up if floating |
| 3 - Out | Amplified video output | Rail-to-rail, DC-coupled; drives 75 Ω or 150 Ω back-terminated loads directly |
| 4 - +In | Non-inverting input | DC-coupled input node; accepts 0 V to 0.55 V common-mode range (at 3.3 V supply) |
| 5 - GND | Analog ground reference | Return path for supply, input, and internal level-shift circuitry; must be low-impedance |
| 6 - RSET | Internal gain-setting resistor tap | Connects to 4 kΩ internal resistor; used with OMAP242x TV-detect function; not user-accessible |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2-pole reconstruction filter | 9 MHz cutoff suppresses 54 MHz DAC sampling aliases by 23 dB while preserving baseband video fidelity |
| DC-coupled input and output | Eliminates external AC-coupling capacitors and associated size/cost; supports 0 V sync-tip preservation via internal level shift |
| TV-detection interface | Enables automatic video start/stop by briefly disabling output during vertical sync; reduces system-level software complexity |
| Fixed 5.2 V/V gain with matched resistors | Internal 4 kΩ RSET and 500 Ω input termination ensure accurate, temperature-stable gain (±0.5% matching) with OMAP242x DACs |
| Ultra-low shutdown current | <1.5 µA shutdown current extends battery life in portable devices where video output is infrequently used |
Applications
| Camera Phone Video Output | OMAP242x-Based Mobile Multimedia |
|---|---|
|
Use Scenario: Transmitting composite video from a smartphone SoC to external displays or TVs via 3.5 mm AV jack. IC Role / Device Role / Timing Role: Final-stage video buffer and level shifter, converting 0.5 VPP DAC output to 1.0 VPP standard video signal with DC-coupled sync tip. Use Value: Eliminates external coupling capacitors and reconstruction filters, reducing BOM count by ≥4 passive components per channel. |
Use Scenario: Integrating TV-out functionality into OMAP2420-based handheld devices with minimal firmware overhead. IC Role / Device Role / Timing Role: Video amplifier with embedded TV-detect logic, synchronizing enable/disable timing with vertical sync pulses for automatic load sensing. Use Value: Reduces host processor interrupt handling and GPIO polling frequency, lowering CPU utilization by >30% during video standby. |
| Portable Media Player Video Interface | Low-Power Digital Camera Output |
|
Use Scenario: Driving composite video signals from portable media players to CRT or LCD monitors with variable cable lengths. IC Role / Device Role / Timing Role: High-fidelity video driver with rail-to-rail output swing and 1.2% differential gain error for color-accurate playback. Use Value: Maintains NTSC/PAL compliance over full temperature range (−40°C to +125°C) without calibration or trimming. |
Use Scenario: Conditioning video output from image sensor processors in compact digital cameras with tight power budgets. IC Role / Device Role / Timing Role: Low-quiescent-current (5.3 mA) video amplifier enabling >10-hour battery life during video recording playback. Use Value: Cuts active video power consumption by 40% compared to discrete op-amp + filter solutions using SOT23 packages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar video amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA360AIDCKT | G = 2 V/V (not 5.2 V/V); no TV-detect support; same SC70-6 package and 9 MHz filter | Requires external gain stage for 0.5 VPP → 1.0 VPP conversion; unsuitable for OMAP242x TV-detect integration | Select when fixed lower gain suffices and TV-detection is handled externally or omitted. |
| OPA358AIDCKR | 70 MHz bandwidth (vs 9 MHz filter-limited); no integrated filter or level shift; 6 mA IQ (vs 5.3 mA) | Needs external 2-pole filter and DC-offset circuitry; higher bandwidth unnecessary for standard-definition video | Select only if system requires wider bandwidth (e.g., HD component video) and can accommodate added passives. |
Compared with OPA361AIDCKT, OPA360AIDCKT lacks TV-detection and gain matching for OMAP242x, while OPA358AIDCKR trades integrated video optimization for raw bandwidth-neither offers the combined DC-coupled sync-tip preservation, fixed 5.2× gain, and TV-detect logic of the OPA361AIDCKT.
Availability
OPA361AIDCKT is available at Aetrix Electronics and suitable for camera phone video output, OMAP242x multimedia systems, and portable media player interfaces requiring stable component supply, guaranteed RoHS compliance, and long-term industrial lifecycle support.
Supply support for OPA361AIDCKT 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, embedded processing, and connectivity technologies, with decades of expertise in precision amplifiers and video signal conditioning.
The OPA361AIDCKT belongs to TI's high-speed video amplifier product line, designed specifically for space- and power-constrained portable video interfaces requiring DC-coupled operation, integrated filtering, and intelligent load detection.
FAQ
What is the exact gain value of the OPA361AIDCKT and how is it implemented?
The OPA361AIDCKT has a precisely trimmed internal gain of 5.2 V/V, achieved via matched on-die resistors (RSET ≈ 4.07 kΩ and input 500 Ω termination). This ratio is stable across temperature (±0.5% matching) and eliminates external gain-setting components-critical for consistent video signal scaling from OMAP242x DACs. The gain is fixed and non-adjustable in the OPA361AIDCKT.
Does the OPA361AIDCKT support true DC-coupled video output, including sync-tip preservation?
Yes, the OPA361AIDCKT supports true DC-coupled output via an internal level-shift circuit that offsets the output by ~11 mV (typical) when the input is at 0 V. This prevents sync-pulse clipping even with 0 V sync tips from video DACs-verified in Figure 7 of the datasheet-and enables direct connection to 75 Ω video loads without output capacitors.
How does the TV-detection feature work in the OPA361AIDCKT?
The OPA361AIDCKT implements TV-detection by briefly disabling its output (via the Enable pin) during the first vertical sync pulse. A pull-up resistor on the output pulls high if no load is present, or low if a 75 Ω TV load is connected. The host processor reads this GPIO state to auto-start/stop video transmission-no additional circuitry or firmware calibration is required for basic detection.
What are the absolute maximum ratings for supply voltage and operating temperature of the OPA361AIDCKT?
The OPA361AIDCKT has an absolute maximum supply voltage of +3.6 V and operates across −40°C to +125°C. Exceeding +3.6 V risks permanent damage; operation outside the specified temperature range may degrade performance or reliability. These limits are defined in Section "Absolute Maximum Ratings" of the SBOS334A datasheet.
Is the OPA361AIDCKT pin-compatible with other SC70-6 video amplifiers like the OPA358AIDCKR?
No, the OPA361AIDCKT is not pin-compatible with OPA358AIDCKR. While both use SC70-6 packages, their pinouts differ: OPA361AIDCKT assigns Pin 6 to RSET (internal function), whereas OPA358AIDCKR uses Pin 6 as NC or a different function. Substituting without board revision will cause functional failure-always verify pin mapping against each device's datasheet.
OPA361AIDCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- General Purpose
- Output Type:
- Rail-to-Rail
- Number of Circuits:
- 1
- -3db Bandwidth:
- -
- Slew Rate:
- -
- Current - Supply:
- 5.3 mA
- Current - Output / Channel:
- 80 mA
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 3.3V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SC-70-6
OPA361AIDCKT FAQ
1.How can I place an order for OPA361AIDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA361AIDCKT 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 OPA361AIDCKT reliable?
The price and inventory of OPA361AIDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA361AIDCKT is usually 5 days.
3.What payment methods are accepted for OPA361AIDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA361AIDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA361AIDCKT?
OPA361AIDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA361AIDCKT 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 OPA361AIDCKT?
For technical support, including OPA361AIDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA361AIDCKT requirements.
6.How does Aetrix verify that OPA361AIDCKT is sourced from the original manufacturer or authorized distributors?
All OPA361AIDCKT 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 OPA361AIDCKT meets industry standards.
7.What is the process for return or replacement of OPA361AIDCKT?
All OPA361AIDCKT units undergo pre-shipment inspection (PSI). If there is an issue with OPA361AIDCKT, 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 OPA361AIDCKT part is unused and in its original packaging.
Return procedure for OPA361AIDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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