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Analog Devices Inc. AD8142ACPZ-R7
- Part No.:
- AD8142ACPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Video Amps and Modules
- Package:
- 24-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD8142ACPZ-R7.pdf
- Description:
- IC AMP DRIVER 24LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,948
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Product details
Overview
AD8142ACPZ-R7 from Analog Devices is a triple, high-speed differential video driver IC optimized for RGB signal distribution over UTP cables. It delivers 255 MHz large-signal bandwidth, 65 MHz 0.1 dB flatness, 1150 V/µs slew rate, and integrated sync-on-common-mode circuitry for HSYNC/VSYNC embedding. It operates from a single 5 V supply and drives balanced video signals in KVM, digital signage, and security camera systems.
For engineers reviewing the AD8142ACPZ-R7 datasheet, AD8142ACPZ-R7 pinout, AD8142ACPZ-R7 application, or AD8142ACPZ-R7 equivalent, this page provides verified technical context, real-world timing and balance performance, package-validated pin functions, and confirmed alternatives for RGB differential video driver selection.
Technical Context
The AD8142ACPZ-R7 employs dual feedback architecture: one loop controls differential output voltage (fixed gain = 2), while a separate internal common-mode feedback loop forces output common-mode voltage to track sync inputs-enabling HSYNC and VSYNC embedding onto R/G/B common-mode channels. This eliminates external sync modulation circuitry.
Each of its three amplifiers features matched output stages with −50 dB balance error at 50 MHz, −100 dB inter-amplifier isolation at 10 MHz, and high-Z disable capability (5 ns assert time). The device uses CMOS process technology and integrates VOCM control logic internally-unlike the AD8141, which exposes VOCMA/B/C pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Large-signal bandwidth | 255 MHz (−3 dB, 2 Vp-p): supports full HD/UXGA video transmission over Cat-5 cable without attenuation-induced color distortion. |
| 0.1 dB flatness | 65 MHz: ensures amplitude fidelity across RGB baseband, critical for accurate color reproduction in digital signage. |
| Slew rate | 1150 V/µs: enables fast edge transitions for sharp sync pulse integrity and minimal pixel timing skew. |
| Output balance error | −50 dB at 50 MHz: suppresses even-order harmonics and minimizes EMI radiation from twisted-pair cabling. |
| Sync-on-common-mode | HSYNC/VSYNC embedded into R/G/B common-mode voltages: eliminates need for separate sync wires in KVM extenders. |
| Disable current | 1.2–1.6 mA: allows low-power multiplexing in multi-source video routing systems without load switching. |
| Supply range | 4.5 V to 5.5 V: compatible with standard 5 V industrial and embedded power rails; no split-supply required. |
Pinout & Package
AD8142ACPZ-R7 is housed in a 24-lead, 4 mm × 4 mm LFCSP package with exposed paddle (EPAD) that must be soldered to PCB ground for thermal and electrical performance. Pin count and layout are identical to AD8141 but functionally distinct due to integrated sync logic.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIS) | Disable control input | Active-high TTL-compatible signal; asserts high-Z outputs in ≤5 ns, enabling seamless source switching. |
| 2,5,14,21 (VS−/GND) | Negative supply / ground reference | Single-supply operation: all tied to 0 V; establishes return path for bias and sync-level references. |
| 3,4,6,7 (−IN R, +IN R, −OUT R, +OUT R) | Red channel I/O pair | Differential input/output for red video component; fixed 2× gain compensates for 100 Ω line termination loss. |
| 9,10,22,23 (+OUT G, −OUT G, +IN G, −IN G) | Green channel I/O pair | Independent amplifier stage with identical gain/bandwidth specs; maintains RGB timing alignment. |
| 12,13,15,16 (+OUT B, −OUT B, +IN B, −IN B) | Blue channel I/O pair | Same performance as R/G channels; blue common-mode output has inverted gain (−1.00 V/V) for sync polarity management. |
| 18 (SYNC LEVEL) | Sync amplitude control | DC voltage referenced to VS− sets peak sync pulse level on all three common-mode outputs (R/G/B). |
| 19 (HSYNC), 20 (VSYNC) | Sync pulse inputs | TTL-level horizontal/vertical sync signals directly modulate respective common-mode DC offsets. |
| 8,11,17,24 (VS+) | Positive supply | Four dedicated 5 V supply pins reduce IR drop and improve PSRR; requires local 0.1 µF decoupling per pin. |
Key Features
| Feature | Design Value |
|---|---|
| Triple differential driver with sync-on-common-mode | Embeds HSYNC/VSYNC into RGB common-mode channels-reduces cable count by 2 wires in KVM/video extenders. |
| Fixed 2× differential gain | Compensates for −6 dB loss across standard 100 Ω differential termination, eliminating external gain-setting resistors. |
| High inter-channel isolation | −100 dB at 10 MHz prevents crosstalk between RGB channels, preserving color purity in high-resolution displays. |
| Fast disable with high-Z outputs | 5 ns disable assertion enables clean switching between video sources without ghosting or bus contention. |
| Single 5 V supply operation | Eliminates need for negative rail or charge pumps-simplifies power design in space-constrained embedded video systems. |
Applications
| Keyboard-video-mouse (KVM) extension | Digital signage distribution |
|---|---|
|
Use Scenario: Transmitting RGBHV signals up to 100 m over Cat-5 cable from central server to remote displays. IC Role / Device Role / Timing Role: Triple differential driver with embedded sync encoding; maintains pixel-clock-aligned RGB timing while embedding HSYNC/VSYNC onto common-mode paths. Use Value: Reduces wiring complexity by 40% versus discrete sync + RGB solutions; preserves 65 MHz flatness for 1920×1200@60 Hz resolution. |
Use Scenario: Driving multiple LCD panels from a single video controller in retail or transportation environments. IC Role / Device Role / Timing Role: High-isolation RGB driver ensuring independent channel integrity across parallel display outputs. Use Value: −100 dB inter-amplifier isolation prevents color bleed between adjacent displays; 255 MHz bandwidth supports dynamic content updates. |
| Security camera video over UTP | RGB video routing switch |
|
Use Scenario: Sending analog RGB video from PTZ cameras over existing building UTP infrastructure. IC Role / Device Role / Timing Role: Differential transmitter converting single-ended camera outputs to noise-immune balanced signals. Use Value: 65 MHz 0.1 dB flatness ensures accurate color fidelity; −50 dB output balance minimizes EMI in electrically noisy surveillance sites. |
Use Scenario: Multiplexing RGB sources (PC, media player, graphics card) to shared display outputs. IC Role / Device Role / Timing Role: Driver with fast disable (5 ns) and high-Z outputs enabling glitch-free source handoff. Use Value: Sub-10 ns switching eliminates visible artifacts during source changes; 1.6 mA disabled current reduces system standby power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple differential video driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8141ACPZ-R7 | No integrated sync-on-common-mode; exposes VOCMA/B/C pins for external common-mode control. | Requires external sync modulation circuitry and additional components for HSYNC/VSYNC embedding. | Select when custom VOCM sequencing or non-standard sync formats are needed; not drop-in compatible with AD8142ACPZ-R7. |
| THS7353IPWPR | Triple SD/HD video driver with 100 MHz bandwidth; no sync-on-common-mode; supports 1.8 V to 5.5 V supplies. | Limited to SD/HD resolutions; lacks RGB-specific balance optimization and sync embedding capability. | Choose for cost-sensitive SD video distribution where 65 MHz flatness and sync integration are unnecessary. |
Compared with AD8142ACPZ-R7, AD8141ACPZ-R7 offers greater VOCM flexibility but adds design complexity for sync, while THS7353IPWPR trades bandwidth and RGB-optimized balance for wider supply range and lower cost in non-UHD applications.
Availability
AD8142ACPZ-R7 is available at Aetrix Electronics and suitable for KVM extension, digital signage distribution, and security camera video-over-UTP applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for AD8142ACPZ-R7 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and high-speed communications markets.
The AD8142ACPZ-R7 belongs to Analog Devices' high-speed video interface product line, designed specifically for noise-immune RGB video transmission over unshielded twisted-pair cabling in professional AV and broadcast infrastructure.
FAQ
What is the primary function of the AD8142ACPZ-R7 in a video system?
The AD8142ACPZ-R7 functions as a triple differential video driver that converts single-ended or differential RGB inputs into balanced differential outputs while embedding HSYNC and VSYNC signals onto the common-mode voltage of each channel. This enables full RGBHV transmission over just three twisted pairs-eliminating separate sync wiring. Its fixed 2× gain compensates for line termination loss, and its 65 MHz 0.1 dB flatness ensures color accuracy in high-resolution displays. The AD8142ACPZ-R7 is engineered for use in KVM extenders, digital signage, and security camera systems where EMI immunity and cable length are critical.
How does the sync-on-common-mode feature work in the AD8142ACPZ-R7?
The AD8142ACPZ-R7 embeds HSYNC and VSYNC pulses onto the common-mode voltage of its red, green, and blue differential outputs using dedicated SYNC LEVEL, HSYNC, and VSYNC pins. When HSYNC or VSYNC pulses are applied, internal circuitry modulates the DC offset of the respective channel's common-mode voltage-e.g., a rising HSYNC edge raises the red common-mode level by ~0.5 V. The SYNC LEVEL pin sets the baseline amplitude of these sync pulses. This eliminates the need for fourth/fifth wires in RGBHV transmission. Unlike the AD8141ACPZ-R7, the AD8142ACPZ-R7 integrates this logic; VOCM pins are not user-accessible.
Can the AD8142ACPZ-R7 operate from a single 5 V supply?
Yes, the AD8142ACPZ-R7 is fully specified for single 5 V operation (4.5 V to 5.5 V range), with VS− pins tied to ground. It draws 44–57 mA quiescent current and delivers rail-to-rail compatible output swing (VS− + 0.18 V to VS+ − 0.4 V per single-ended output). No negative supply or level-shifting circuitry is required. The internal common-mode feedback and sync modulation logic are designed to function correctly with ground-referenced inputs and sync signals-making it ideal for compact, low-cost embedded video systems where split supplies are impractical.
What is the significance of −50 dB output balance error at 50 MHz for the AD8142ACPZ-R7?
A −50 dB output balance error at 50 MHz means the AD8142ACPZ-R7 maintains near-perfect amplitude and phase matching between its complementary differential outputs across the core RGB video band. This directly suppresses second-harmonic distortion and minimizes radiated electromagnetic interference (EMI) from UTP cables-critical for passing EMC compliance in commercial AV equipment. In practice, this balance enables >65 MHz signal fidelity and prevents color shifts or ghosting in high-resolution displays. The AD8142ACPZ-R7 achieves this via an internal common-mode feedback loop that actively corrects mismatches, unlike discrete op-amp solutions requiring precision external matching.
How does the disable feature of the AD8142ACPZ-R7 support video routing applications?
The AD8142ACPZ-R7's DIS pin provides fast, controlled output disable: asserting DIS high places all six outputs (R±, G±, B±) in high-impedance state within 5 ns, reducing supply current to 1.2–1.6 mA. This enables clean, glitch-free switching between multiple video sources in matrix routers or multi-display controllers-without signal contention or bus loading. Because outputs go truly high-Z (not just tri-stated), downstream receivers see open-circuit conditions, preventing corruption during transition. The AD8142ACPZ-R7's disable timing and low leakage make it suitable for real-time video multiplexing in broadcast and medical imaging systems.
AD8142ACPZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 24-WFQFN Exposed Pad, CSP
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Driver
- Output Type:
- Differential
- Number of Circuits:
- 3
- -3db Bandwidth:
- 285 MHz
- Slew Rate:
- 1250V/µs
- Current - Supply:
- 47 mA
- Current - Output / Channel:
- -
- Voltage - Supply, Single/Dual (±):
- 4.5V ~ 5.5V, ±2.25V ~ 2.75V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 24-LFCSP (4x4)
AD8142ACPZ-R7 FAQ
1.How can I place an order for AD8142ACPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8142ACPZ-R7 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 AD8142ACPZ-R7 reliable?
The price and inventory of AD8142ACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8142ACPZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8142ACPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8142ACPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8142ACPZ-R7?
AD8142ACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8142ACPZ-R7 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 AD8142ACPZ-R7?
For technical support, including AD8142ACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8142ACPZ-R7 requirements.
6.How does Aetrix verify that AD8142ACPZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8142ACPZ-R7 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 AD8142ACPZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8142ACPZ-R7?
All AD8142ACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8142ACPZ-R7, 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 AD8142ACPZ-R7 part is unused and in its original packaging.
Return procedure for AD8142ACPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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