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Texas Instruments OPA361AIDCKTG4
- Part No.:
- OPA361AIDCKTG4
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
OPA361AIDCKTG4.pdf
- Description:
- IC AMP GENERAL PURPOSE SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,443
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Product details
Overview
OPA361AIDCKTG4 from Texas Instruments is a single-supply, rail-to-rail output video amplifier optimized for 3V portable camera phone applications. It integrates fixed gain (5.2 V/V), a 2-pole reconstruction filter (9 MHz cutoff), internal level shift for DC-coupled sync-tip preservation, and TV-detection support for OMAP242x/DaVinci processors. Its SC70-6 package enables compact video signal conditioning in space-constrained mobile designs.
For engineers reviewing the OPA361AIDCKTG4 datasheet, OPA361AIDCKTG4 pinout, OPA361AIDCKTG4 application, or OPA361AIDCKTG4 equivalent, key selection criteria include its 0.55 V input common-mode range at 3.3 V supply, 5.3 mA quiescent current, 1.5 µA shutdown current, −40°C to +125°C operating temperature, and compatibility with 0.4–0.5 VPP video DAC outputs.
Technical Context
The OPA361AIDCKTG4 implements a Sallen-Key 2-pole low-pass filter with 9 MHz −3 dB cutoff to reconstruct video DAC signals while suppressing 54 MHz sampling aliases by >23 dB. Its internal level-shift circuit offsets the output by ~11 mV (typical) to prevent sync-pulse clipping when driven by 0 V-referenced video DACs.
TV-detection functionality operates via controlled shutdown during vertical sync pulses, enabling GPIO-based load sensing without external components. The integrated 500 Ω DAC load resistor and 4 kΩ RSET resistor ensure precise gain ratio tracking across temperature for OMAP242x interface stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 3.3 V - supports direct connection to 2.8 V system rails without LDO overhead. |
| Fixed Gain | 5.2 V/V - eliminates external feedback resistors, reducing BOM count and layout area. |
| Filter Cutoff | 9 MHz - preserves baseband video bandwidth while attenuating DAC sampling artifacts. |
| Input Common-Mode Range | GND to 0.55 V at 3.3 V supply - enables DC-coupling from 0.4–0.5 VPP video DACs. |
| Output Swing | Within 5 mV of GND and 250 mV of V+ into 150 Ω - ensures full-swing video signal integrity without AC coupling. |
| Quiescent Current | 5.3 mA (enabled), 1.5 µA (shutdown) - extends battery life during inactive TV-out periods. |
| Differential Gain/Phase Error | 1.2 % / 1.6° - meets NTSC/PAL broadcast-grade video fidelity requirements. |
Pinout & Package
OPA361AIDCKTG4 is housed in a RoHS-compliant SC70-6 package (2.0 mm × 2.1 mm, 1.1 mm max height), suitable for high-density portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: V+ | Positive supply rail | Accepts 2.5–3.3 V; requires local 100 nF ceramic bypass capacitor. |
| 2: Enable | Shutdown control input | CMOS-compatible logic: <0.35 V = disabled, >1.3 V = enabled; internal pull-up defaults to active. |
| 3: Out | Amplified video output | Rail-to-rail swing into 75 Ω or 150 Ω loads; supports DC-coupled TV detection via external pull-up. |
| 4: +In | Inverting input | DC-coupled video DAC input; common-mode range includes GND for zero-V sync tip handling. |
| 5: GND | Analog ground reference | Must be connected to low-impedance system ground plane to minimize noise coupling. |
| 6: RSET | Internal gain resistor terminal | Connects to internal 4.07 kΩ resistor; used with OMAP242x for precise gain and temperature tracking. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2-pole reconstruction filter | 9 MHz cutoff suppresses 54 MHz DAC sampling aliases by >23 dB, eliminating need for external RC filters. |
| DC-coupled input and output | Eliminates output coupling capacitors and associated size/cost; prevents sync-pulse clipping via internal 11 mV level shift. |
| TV-detection support | Enables automatic video start/stop via GPIO polling during vertical sync, simplifying user interface and saving power. |
| Internal gain-setting resistors | Fixed 5.2 V/V gain reduces component count and improves thermal tracking versus discrete resistor networks. |
| Low-power shutdown mode | Reduces quiescent current to 1.5 µA, extending battery life in intermittent video-out use cases like camera phones. |
Applications
| Mobile Camera Phone Video Output | OMAP242x-Based Multimedia Handset |
|---|---|
Use Scenario: Transmitting composite video from a smartphone's image sensor pipeline to an external display or TV via 3.5 mm AV jack. IC Role / Device Role / Timing Role: Final-stage video buffer and level shifter, converting 0.45 VPP DAC output to 2.25 VPP composite signal with sync-tip preservation. Use Value: Enables true DC-coupled video path with no capacitor-induced baseline drift or sync loss, critical for reliable TV-out detection and playback. |
Use Scenario: Interfacing TI OMAP2420 processor's embedded video encoder to analog video output circuitry in a PDA or handheld media player. IC Role / Device Role / Timing Role: Integrated gain stage, reconstruction filter, and TV-detect enabler-replacing 3–4 discrete components in legacy designs. Use Value: Reduces board area by >40% versus discrete op-amp + filter + level-shift solution while improving temperature stability of gain and sync response. |
| Portable Media Player Composite Output | Low-Power Video Interface for DaVinci Processors |
Use Scenario: Driving NTSC/PAL composite video from a battery-powered media player to CRT or LCD monitors using minimal external components. IC Role / Device Role / Timing Role: High-fidelity video amplifier with rail-to-rail output swing and differential gain/phase error under 1.5%, meeting broadcast video standards. Use Value: Delivers 65 dB SNR and <26 ns group delay variation across 100 kHz–4.5 MHz, ensuring color fidelity and timing accuracy in consumer video playback. |
Use Scenario: Connecting TI DaVinci DM6446 video processor's video DAC output to analog video output stages in IP cameras or video conferencing endpoints. IC Role / Device Role / Timing Role: Signal conditioner providing gain, filtering, and DC-level management for 0.5 VPP video streams in industrial embedded systems. Use Value: Supports −40°C to +125°C operation with <0.5% RIN/RSET matching drift, ensuring stable video performance across automotive and industrial temperature ranges. |
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, no TV-detect, same SC70-6 package and 2.7–3.3 V supply range. | Lacks integrated TV-detection and level-shift circuitry; requires external components for sync-tip handling. | Select when lower gain and absence of TV-detect functionality are acceptable, and cost reduction is prioritized over feature integration. |
| OPA358AIDCKT | 70 MHz bandwidth, 6 mA IQ, 5 µA shutdown, but no internal filter or level shift; requires external reconstruction filter. | Higher bandwidth suits wideband applications but lacks OPA361AIDCKTG4's video-optimized features and DC-coupled sync support. | Choose for non-standard video formats or where external filter tuning is required, accepting increased design complexity and component count. |
Compared with OPA361AIDCKTG4, OPA360AIDCKT offers lower gain and no TV-detection, making it less suitable for automated video output switching, while OPA358AIDCKT provides higher bandwidth but demands external filtering and level-shifting circuitry-increasing layout area and calibration effort.
Availability
OPA361AIDCKTG4 is available at Aetrix Electronics and suitable for camera phone video output, OMAP242x multimedia handsets, and portable media player composite interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA361AIDCKTG4 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 digital signal technologies, with decades of expertise in high-performance video signal conditioning.
The OPA361AIDCKTG4 belongs to TI's precision video amplifier product line, designed specifically for low-voltage, space-constrained portable video applications interfacing with OMAP and DaVinci application processors.
FAQ
What is the function of the RSET pin on the OPA361AIDCKTG4?
The RSET pin connects to an internal 4.07 kΩ resistor that forms part of the gain-setting network and the Sallen-Key reconstruction filter. In OMAP242x applications, it interfaces with the processor's 4 kΩ external resistor to maintain precise gain ratio and temperature tracking-ensuring stable video output amplitude across operating conditions. This pin must not be left floating in production designs.
Does the OPA361AIDCKTG4 support DC-coupled video output without external capacitors?
Yes, the OPA361AIDCKTG4 supports true DC-coupled video output due to its internal level-shift circuit, which offsets the output by ~11 mV (typical) to prevent saturation when the input sync tip is at 0 V. This eliminates the need for output coupling capacitors, avoiding baseline drift and preserving low-frequency video content integrity in camera phone and portable media applications.
How does the TV-detection feature work in the OPA361AIDCKTG4?
The OPA361AIDCKTG4 implements TV-detection by briefly disabling its output during the first vertical sync pulse. With a pull-up resistor on the Out pin, the voltage reads HIGH if no load is present or LOW if a 75 Ω TV load is connected. This GPIO-readable signal enables automatic video start/stop-reducing power consumption and simplifying end-user interface logic in OMAP242x and DaVinci-based systems.
What is the maximum video signal frequency supported by the OPA361AIDCKTG4's internal filter?
The OPA361AIDCKTG4's integrated 2-pole Sallen-Key filter has a −3 dB cutoff at 9 MHz, supporting standard-definition video bandwidths up to 4.5 MHz with <0.1 dB gain flatness. At 27 MHz, attenuation reaches −18 dB, and at 54 MHz (OMAP242x DAC sampling frequency), it exceeds −23 dB-effectively suppressing sampling aliases while preserving luminance and chrominance fidelity in NTSC/PAL signals.
Can the OPA361AIDCKTG4 operate from a 2.5 V supply while maintaining full video performance?
Yes, the OPA361AIDCKTG4 is fully specified from 2.5 V to 3.3 V. At 2.5 V supply, it maintains rail-to-rail output swing (within 5 mV of GND and 250 mV of V+), 5.2 V/V gain accuracy (±0.12 V/V), and 1.2% differential gain error-enabling robust video performance in ultra-low-power portable systems without compromising signal fidelity or sync-tip handling capability.
OPA361AIDCKTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
OPA361AIDCKTG4 FAQ
1.How can I place an order for OPA361AIDCKTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA361AIDCKTG4 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 OPA361AIDCKTG4 reliable?
The price and inventory of OPA361AIDCKTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA361AIDCKTG4 is usually 5 days.
3.What payment methods are accepted for OPA361AIDCKTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA361AIDCKTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA361AIDCKTG4?
OPA361AIDCKTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA361AIDCKTG4 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 OPA361AIDCKTG4?
For technical support, including OPA361AIDCKTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA361AIDCKTG4 requirements.
6.How does Aetrix verify that OPA361AIDCKTG4 is sourced from the original manufacturer or authorized distributors?
All OPA361AIDCKTG4 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 OPA361AIDCKTG4 meets industry standards.
7.What is the process for return or replacement of OPA361AIDCKTG4?
All OPA361AIDCKTG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA361AIDCKTG4, 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 OPA361AIDCKTG4 part is unused and in its original packaging.
Return procedure for OPA361AIDCKTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA361AIDCKTG4 Tags
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