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Analog Devices Inc. AD8120ACPZ-R2
- Part No.:
- AD8120ACPZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Video Processing
- Package:
- 32-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD8120ACPZ-R2.pdf
- Description:
- IC VIDEO DELAY LINE 32LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:240
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Product details
Overview
AD8120ACPZ-R2 from Analog Devices is a triple-channel, broadband analog video delay line designed to correct channel-to-channel skew in RGB/YPbPr signals transmitted over unshielded twisted pair (UTP) cables. It delivers up to 50 ns per channel with 0.8 ns resolution, 200 MHz bandwidth at zero delay, fixed gain of 2 V/V, and supports analog voltage or digital (SPI/I²C) control - deployed in KVM extenders and HD video distribution systems.
For engineers reviewing the AD8120ACPZ-R2 datasheet, AD8120ACPZ-R2 pinout, AD8120ACPZ-R2 application, or AD8120ACPZ-R2 equivalent, key selection criteria include skew correction resolution (0.8 ns), channel matching (±0.4 ns delay error, ±30 mV RTI offset), dual-control flexibility (analog VCR/VCG/VCB or 6-bit SPI/I²C), thermal performance (θJA = 36°C/W), and industrial temperature operation (−40°C to +85°C).
Technical Context
The AD8120ACPZ-R2 implements cascaded switched-capacitor delay sections per channel, enabling monotonic 0.8 ns steps across 64 codes (0–63), with propagation delay of 4.9 ns common to all channels. Delay is relative - used to align arrival times of R/G/B signals corrupted by differential UTP pair lengths.
It integrates independent analog control inputs (VCR, VCG, VCB, 0–2 V range) and dual digital interfaces: 4-wire SPI (10 MHz clock, MSB-first 2-byte writes) and I²C (100 kHz, 7-bit address + A0/A1 pins for up to four devices). Power-down mode reduces quiescent current to 4 mA (positive rail) and 0.5 mA (negative rail).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Delay Range | 50 ns per channel - sufficient to compensate typical Category 5/6 UTP skew in 100+ meter HD video runs. |
| Delay Resolution | 0.8 ns per LSB - enables precise sub-nanosecond alignment of RGB timing for artifact-free 1080p/UXGA video. |
| Bandwidth | 200 MHz @ 0 ns delay; 150 MHz @ 50 ns delay - preserves edge integrity and color fidelity in HD/RGB video signals. |
| Gain Accuracy | 1.95–2.06 V/V with 0.8% channel-to-channel matching - ensures consistent luminance and chroma scaling across R/G/B paths. |
| Output Drive | ±3.25 V swing into 150 Ω - directly drives four double-terminated 75 Ω video loads without external buffers. |
| Input Impedance | 500 kΩ differential - minimizes loading on upstream video sources (e.g., AD8123 equalizer outputs). |
| Quiescent Current | 44 mA (+VS) / 37 mA (−VS) at 0 ns; 114 mA / 108 mA at 50 ns - scales linearly with delay setting for thermal management. |
Pinout & Package
AD8120ACPZ-R2 uses a 32-lead, 5 mm × 5 mm LFCSP package with exposed thermal pad. Pin 1 is GND (top-left corner, marked dot); exposed pad must be soldered to internal PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1,8,10,12,14,18,24,32) | Ground reference | Eight dedicated ground pins minimize ground bounce and ensure stable bias for high-speed analog paths. |
| RIN/GIN/BIN (Pins 26,27,28) | Video input terminals | Differential high-impedance inputs (500 kΩ) accept RGB analog baseband signals prior to skew correction. |
| ROUT/GOUT/BOUT (Pins 15,13,11) | Video output terminals | Low-impedance buffered outputs drive 75 Ω video lines; support 4× double-termination per channel. |
| VCR/VCG/VCB (Pins 23,22,21) | Analog delay control | 0–2 V inputs mapped to 64 delay codes; 28 mV per LSB enables potentiometer-based manual calibration. |
| SER_SEL/MODE/PD (Pins 6,7,5) | Digital interface control | MODE=1 selects analog control; SER_SEL sets SPI (high) or I²C (low); PD high disables core circuitry. |
| SDO/SDA, SCK/SCL, CS/A0, SDI/A1 (Pins 2,30,31,29) | Digital bus interface | Shared pins support either SPI (4-wire) or I²C (2-wire); A0/A1 set I²C address (0x38–0x3B) for multi-device systems. |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent delay paths | Enables simultaneous, asymmetric correction of R/G/B skew - e.g., +40 ns red, +28 ns blue, 0 ns green - without inter-channel crosstalk (−80 dB @ 1 MHz). |
| 0.8 ns delay resolution | Supports pixel-level timing alignment in UXGA (1600×1200) and 1080p video, eliminating color fringing and motion artifacts. |
| Fixed gain of 2 V/V | Eliminates need for external gain stages; maintains signal-to-noise ratio while compensating for UTP insertion loss. |
| Integrated power-down mode | Reduces total supply current to 4.5 mA (typical), enabling dynamic power gating in multi-port KVM switchers during idle states. |
| Industrial temperature rating | Guaranteed operation from −40°C to +85°C - suitable for embedded video enclosures, digital signage controllers, and security DVR chassis. |
Applications
| KVM Extender Systems | Digital Signage Distribution |
|---|---|
|
Use Scenario: Extending keyboard-video-mouse signals over 100+ meters of Cat6 UTP between server room and remote workstation. IC Role / Device Role / Timing Role: Skew-compensating delay line that realigns R/G/B arrival times after differential propagation through twisted pairs. Use Value: Eliminates color separation and image smearing by correcting up to 50 ns of inter-pair delay mismatch, preserving full HD resolution. |
Use Scenario: Distributing RGB video from a central media player to multiple wall-mounted displays via daisy-chained UTP runs. IC Role / Device Role / Timing Role: Triple-channel delay element placed after UTP equalization (e.g., AD8123) to restore temporal coherence across display outputs. Use Value: Enables synchronized frame rendering across all displays by matching channel delays to within ±0.4 ns, preventing visible tearing or lag. |
| Professional Video Projection | Security Video Over UTP |
|
Use Scenario: Feeding RGBHV signals from a graphics workstation to a high-brightness projector using long UTP cable bundles. IC Role / Device Role / Timing Role: Post-equalization timing alignment IC that compensates for manufacturing-induced twist-rate variations in bundled UTP cables. Use Value: Maintains sharp text and fine detail in presentations by ensuring sub-1-ns channel alignment at 1600×1200@60 Hz. |
Use Scenario: Transmitting analog CCTV camera feeds over existing building UTP infrastructure to centralized DVR units. IC Role / Device Role / Timing Role: Skew correction stage in receiver-side video conditioning ASICs, restoring RGB timing integrity degraded by legacy cable plant. Use Value: Recovers usable color fidelity in surveillance footage where UTP skew would otherwise cause false-color artifacts in moving objects. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-channel analog video delay applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8120ARUZ | 32-pin TSSOP package (7 mm × 7 mm); higher θJA (55°C/W); same electrical specs and pinout mapping. | Preferred for prototyping or low-volume PCBs with larger pitch constraints; less optimal thermal performance in dense layouts. | Select AD8120ARUZ only when LFCSP assembly capability is unavailable; AD8120ACPZ-R2 offers superior thermal dissipation and board space efficiency. |
| LMH0387SQ/NOPB | Single-channel, 10-bit programmable delay (0–100 ns); no analog control; requires external DAC for voltage-based tuning. | Requires three separate ICs and supporting logic to match AD8120ACPZ-R2's integrated triple-channel function. | Choose LMH0387SQ/NOPB only for designs needing >50 ns delay or requiring discrete channel optimization; AD8120ACPZ-R2 provides tighter integration and lower BOM count. |
Compared with AD8120ARUZ, AD8120ACPZ-R2 delivers 47% lower thermal resistance (36 vs. 55°C/W) and 30% smaller footprint - critical for fanless KVM enclosures. Versus LMH0387SQ/NOPB, it eliminates three-fold component count, analog interface complexity, and inter-IC skew uncertainty.
Availability
AD8120ACPZ-R2 is available at Aetrix Electronics and suitable for KVM extension, digital signage distribution, professional video projection, and security video over UTP requiring stable component supply and guaranteed long-term industrial-grade availability.
Supply support for AD8120ACPZ-R2 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, Inc. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial automation, and communications infrastructure.
The AD8120ACPZ-R2 belongs to Analog Devices' high-speed video conditioning product line, engineered specifically for time-critical analog video signal integrity restoration in UTP-based transmission systems.
FAQ
What is the maximum delay resolution supported by the AD8120ACPZ-R2?
The AD8120ACPZ-R2 provides 0.8 ns delay resolution across its full 0–50 ns range, implemented via 64 discrete delay codes (0–63). This resolution is maintained in both digital (SPI/I²C) and analog (VCR/VCG/VCB) control modes, enabling precise sub-pixel timing alignment essential for high-resolution RGB video applications.
Does the AD8120ACPZ-R2 require external components for basic operation?
No, the AD8120ACPZ-R2 operates autonomously with only decoupling capacitors (recommended: 0.1 μF ceramic + 10 μF tantalum per supply rail) and a 0.01 μF capacitor on VREF. It features internal biasing, matched delay elements, and no external resistor networks - unlike discrete delay solutions that demand precision passive matching.
How does the AD8120ACPZ-R2 handle channel-to-channel delay matching?
The AD8120ACPZ-R2 guarantees ≤0.4 ns channel-to-channel delay error at maximum 50 ns setting, achieved through monolithic silicon layout and matched transistor sizing. Its propagation delay (4.9 ns) is inherently well-tracked across R/G/B paths, making relative skew correction highly repeatable and temperature-stable (0.36 mA/°C quiescent drift).
Can the AD8120ACPZ-R2 drive standard 75 Ω video loads directly?
Yes, the AD8120ACPZ-R2 outputs deliver ±3.25 V into 150 Ω (doubly terminated 75 Ω), supporting up to four double-terminated video loads per channel. Its 1.5 Ω output impedance at 20 MHz ensures minimal signal reflection and maintains flat frequency response up to 150 MHz even at full 50 ns delay.
What is the operating temperature range for the AD8120ACPZ-R2?
The AD8120ACPZ-R2 is rated for continuous operation from −40°C to +85°C ambient temperature, validated across full electrical specifications. This industrial-grade range supports deployment in unventilated digital signage enclosures, outdoor security DVR housings, and factory-floor KVM installations without derating.
AD8120ACPZ-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Applications:
- Professional Video
- Standards:
- -
- Control Interface:
- I2C, SPI
- Voltage - Supply:
- 4.5V ~ 5.5V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-LFCSP-VQ (5x5)
AD8120ACPZ-R2 FAQ
1.How can I place an order for AD8120ACPZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8120ACPZ-R2 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 AD8120ACPZ-R2 reliable?
The price and inventory of AD8120ACPZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8120ACPZ-R2 is usually 5 days.
3.What payment methods are accepted for AD8120ACPZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8120ACPZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8120ACPZ-R2?
AD8120ACPZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8120ACPZ-R2 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 AD8120ACPZ-R2?
For technical support, including AD8120ACPZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8120ACPZ-R2 requirements.
6.How does Aetrix verify that AD8120ACPZ-R2 is sourced from the original manufacturer or authorized distributors?
All AD8120ACPZ-R2 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 AD8120ACPZ-R2 meets industry standards.
7.What is the process for return or replacement of AD8120ACPZ-R2?
All AD8120ACPZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with AD8120ACPZ-R2, 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 AD8120ACPZ-R2 part is unused and in its original packaging.
Return procedure for AD8120ACPZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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