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Texas Instruments OPA4872IDG4
- Part No.:
- OPA4872IDG4
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4872IDG4.pdf
- Description:
- IC INTERFACE SPECIALIZED 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,597
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Product details
Overview
OPA4872IDG4 from Texas Instruments is a 4:1 high-speed multiplexer with integrated gain control, operating at ±5V supply and delivering 500MHz small-signal bandwidth, 10ns channel switching time, and 0.1dB gain flatness to 120MHz. It serves as a video routing and programmable gain amplifier (PGA) front-end in broadcast-grade RGB routers and LCD display timing paths.
For engineers reviewing the OPA4872IDG4 datasheet, OPA4872IDG4 pinout, OPA4872IDG4 application, or OPA4872IDG4 equivalent, key selection criteria include its 88dB off-isolation in shutdown mode, 2300V/μs slew rate, low 40mVPP switching glitch, and SO-14 package compatibility with high-density video signal path layouts.
Technical Context
The OPA4872IDG4 uses a patented current-steering input stage for true closed-loop 4:1 multiplexing without compromising bandwidth or settling behavior. Its architecture maintains >500MHz large-signal (2VPP) bandwidth across all four channels while enabling independent digital control of channel selection (A0/A1), enable (EN), and shutdown (SD).
It operates as a current-feedback amplifier with 103kΩ open-loop transimpedance, 30Ω internal buffer output impedance, and optimized feedback networks (e.g., 523Ω for G = +2V/V). Gain flatness, harmonic distortion (–60dBc 2nd-harmonic at 10MHz), and differential gain/phase (0.035%/0.005°) are specified under matched 75Ω load conditions per video standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth | 500MHz at G = +2V/V, RL = 150Ω - supports full HD/3G-SDI baseband video without roll-off |
| Channel switching time | 10ns max - enables frame-accurate source switching in multi-camera broadcast systems |
| Off isolation | 88dB at 10MHz - prevents crosstalk between inactive channels in RGB router applications |
| Slew rate | 2300V/μs - preserves edge fidelity for fast-rising sync pulses and digital video transitions |
| Quiescent current | 10.6mA typical at ±5V - balances performance and power in thermally constrained PCB layouts |
| Differential gain/phase | 0.035% / 0.005° - meets SMPTE RP-168 and ITU-R BT.601 analog video fidelity requirements |
| Supply voltage range | ±3.5V to ±6.0V - allows operation from legacy ±5V rails or upgraded ±4.5V systems |
Pinout & Package
OPA4872IDG4 is housed in a 14-pin SOIC (SO-14) package with exposed pad thermal enhancement. Pin numbering follows standard top-view D-package layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0–IN3 | Noninverting analog inputs | Four independent video/data channels; each presents 2.5MΩ input resistance when selected |
| A0, A1 | Digital address inputs | 2-bit binary select for channel routing (00–11); TTL/CMOS compatible (0.8V/2.0V thresholds) |
| EN | Chip enable | Active-high logic; disables output to high-Z and reduces IQ to 3.4mA |
| SD | Shutdown control | Active-high logic; places device in ultra-low-power state (IQ = 1.1mA) with 88dB isolation |
| OUT | Amplified output | Current-feedback output capable of ±75mA drive into 150Ω load |
| FB | Feedback node | Internal connection point for external feedback resistor network (e.g., 523Ω for G = +2V/V) |
| V+, V− | Power supply rails | ±5V nominal; supports ±3.5V to ±6.0V operation with PSRR >56dB |
| GND | Analog ground reference | Two dedicated pins (pins 5 and 14) minimize ground bounce in high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| Patented current-steering switch architecture | Eliminates charge injection and reduces switching glitch to ±20mVPP at matched load |
| User-settable gain via external resistors | Supports G = 1, 2, 4, 8V/V configurations using standard RF/RG networks |
| High off-isolation in disable/shutdown modes | 88dB at 10MHz ensures minimal feedthrough during channel transitions |
| Low-noise video signal path | 4.5nV/√Hz input voltage noise and 0.035%/0.005° dG/dP meet broadcast video SNR targets |
| Fast enable/disable timing | 6ns enable time and 25ns disable time support real-time routing in automated test equipment |
Applications
| Video Router | LCD/Plasma Display Timing |
|---|---|
Use Scenario: Switching between four camera feeds in live production switchers with frame-accurate cut/fade transitions. IC Role / Device Role / Timing Role: 4:1 multiplexer with integrated gain staging and DC-coupled signal path. Use Value: 10ns switching time and <40mVPP glitch prevent visible artifacts during cuts; 88dB off-isolation avoids ghosting between sources. | Use Scenario: Routing RGB signals from multiple graphics controllers to a single panel interface in industrial HMIs. IC Role / Device Role / Timing Role: High-bandwidth analog multiplexer with programmable gain for brightness/contrast calibration. Use Value: 500MHz bandwidth preserves pixel clock integrity up to 1920×1200@60Hz; G = 1–8V/V scaling adjusts panel drive level without external DACs. |
| High-Speed PGA | Drop-in Upgrade to AD8174 |
Use Scenario: Implementing gain-controlled front-end for digitizing wideband sensor outputs in test instrumentation. IC Role / Device Role / Timing Role: Programmable gain amplifier with 300MHz+ channel bandwidth and low distortion. Use Value: 0.1dB gain flatness to 120MHz ensures amplitude accuracy across multi-MHz sensor spectra; 2300V/μs slew rate captures transient events. | Use Scenario: Replacing obsolete AD8174 in existing video infrastructure where board space and pinout are fixed. IC Role / Device Role / Timing Role: Pin-compatible 4:1 mux with enhanced bandwidth and lower power. Use Value: Same SO-14 footprint and logic-level compatibility; 500MHz vs 320MHz bandwidth extends usable frequency range by >50%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4:1 high-speed multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8174ARZ | 320MHz bandwidth, 25ns switching time, ±15V supply capable, no integrated gain control | Legacy video infrastructure requiring higher supply voltage tolerance and lower cost | Choose AD8174ARZ only if ±15V rails are mandatory and 500MHz bandwidth is not required |
| THS4521IRGTR | Single-channel, fully differential, 1.8GHz GBW, no multiplexing function, requires external switches | High-precision ADC driver applications needing differential signaling and ultra-low noise | Choose THS4521IRGTR when building custom mux+driver stages with discrete analog switches and differential outputs |
Compared with AD8174ARZ and THS4521IRGTR, the OPA4872IDG4 uniquely integrates 4:1 multiplexing, programmable gain, and 500MHz bandwidth in a single SO-14 package-enabling compact, low-glitch video routing without external gain-setting components or complex layout compensation.
Availability
OPA4872IDG4 is available at Aetrix Electronics and suitable for video router, LCD/plasma display timing, and high-speed PGA applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for broadcast and industrial OEM programs.
Supply support for OPA4872IDG4 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 50 years of innovation in high-performance signal chain solutions.
The OPA4872IDG4 belongs to TI's OPA high-speed operational amplifier product line, designed specifically for demanding video, instrumentation, and communications applications where bandwidth, low distortion, and precise switching behavior are critical.
FAQ
What is the maximum operating supply voltage for the OPA4872IDG4?
The OPA4872IDG4 supports a maximum operating supply voltage of ±6.0V per absolute maximum ratings. Operation at ±5V is specified across all electrical characteristics, including bandwidth, distortion, and switching performance. Exceeding ±6.0V risks permanent damage; operation below ±3.5V is not guaranteed per datasheet limits.
Does the OPA4872IDG4 require external compensation components for stability?
No, the OPA4872IDG4 is internally compensated for unity-gain stable operation with RF = 523Ω at NG = 2 on ±5V supplies. External compensation is not required for standard configurations, though recommended RF values scale with noise gain (e.g., 69Ω for G = +8V/V) to maintain bandwidth flatness per Figure 33 in the SBOS346C datasheet.
Can the OPA4872IDG4 drive a 75Ω video load directly?
Yes, the OPA4872IDG4 is characterized driving 150Ω loads (150Ω||1046Ω ≈ 131Ω), but it can drive 75Ω loads directly with proper termination. For 75Ω systems, use series output resistors (e.g., 75Ω) to match impedance and minimize reflections, as shown in Figure 27. Output swing drops to ±3.7V at RL = 150Ω and ±3.45V at RL = 150Ω over temperature.
How does the OPA4872IDG4 achieve low switching glitch compared to earlier mux designs?
The OPA4872IDG4 achieves ±20mVPP switching glitch through its patented current-steering input stage, which eliminates charge injection and maintains closed-loop control during channel transitions. Unlike voltage-switched architectures, this technique preserves DC accuracy and minimizes transient errors without requiring external blanking or post-filtering circuits.
Is the OPA4872IDG4 pin-compatible with the OPA4872ID?
Yes, the OPA4872IDG4 and OPA4872ID share identical SO-14 (D) package footprints, pin assignments, and electrical specifications. The "G4" suffix denotes TI's green packaging standard (lead-free, RoHS-compliant), while "ID" indicates the same temperature range (–40°C to +85°C) and performance grade. No PCB redesign is needed when migrating from OPA4872ID to OPA4872IDG4.
OPA4872IDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Applications:
- Multiplexer with Amplifier
- Interface:
- -
- Voltage - Supply:
- ±3.5V ~ 6V
- Supplier Device Package:
- 14-SOIC
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
OPA4872IDG4 FAQ
1.How can I place an order for OPA4872IDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4872IDG4 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 OPA4872IDG4 reliable?
The price and inventory of OPA4872IDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4872IDG4 is usually 5 days.
3.What payment methods are accepted for OPA4872IDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4872IDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4872IDG4?
OPA4872IDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4872IDG4 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 OPA4872IDG4?
For technical support, including OPA4872IDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4872IDG4 requirements.
6.How does Aetrix verify that OPA4872IDG4 is sourced from the original manufacturer or authorized distributors?
All OPA4872IDG4 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 OPA4872IDG4 meets industry standards.
7.What is the process for return or replacement of OPA4872IDG4?
All OPA4872IDG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4872IDG4, 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 OPA4872IDG4 part is unused and in its original packaging.
Return procedure for OPA4872IDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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