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Analog Devices Inc. ADD8506WRU-REEL7
- Part No.:
- ADD8506WRU-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Video Amps and Modules
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADD8506WRU-REEL7.pdf
- Description:
- 6-CHANNEL LCD GAMMA BUFFER
- Quantity:
- Payment:
- Shipping:
Inventory:5,751
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Product details
Overview
ADD8506WRU-REEL7 from Analog Devices is a 6-channel muxed-input LCD gamma reference buffer designed to drive column driver gamma inputs in line-inversion LCD panels. It features rail-to-rail input/output, 380 mA output current per channel, 3.9 mA supply current at 5 V, and operates from 3.3 V to 6.5 V across −40°C to +105°C. It is used in automotive infotainment displays requiring stable dual-gamma voltage switching.
For engineers reviewing the ADD8506WRU-REEL7 datasheet, ADD8506WRU-REEL7 pinout, ADD8506WRU-REEL7 application, or ADD8506WRU-REEL7 equivalent, this page delivers verified technical context, package mapping, real-world use cases, and validated alternative options for LCD gamma reference design in automotive and industrial display systems.
Technical Context
The ADD8506WRU-REEL7 implements six independent CMOS buffer channels, each with dual analog inputs (INAx/INBx) selected by a single A/B logic control pin. Its high-output-current architecture (≥120 mA min per channel, up to 380 mA short-circuit) ensures fast settling (≤6 μs with 200 pF/10 kΩ load) and stable driving of resistor ladder networks used for positive/negative gamma voltage generation.
It supports line inversion timing via synchronized A/B selection across all channels, maintains rail-to-rail operation over full temperature range (−40°C to +105°C), and integrates three dedicated VCC pins (VCC1/VCC2/VCC3) and dual GND pairs to minimize noise coupling during high-slew-rate (7.0 V/μs) transient response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 6 independent gamma reference buffers with A/B input multiplexing per channel |
| Supply Voltage | 3.3 V to 6.5 V - enables direct compatibility with common 5 V display power rails |
| Output Current | 380 mA short-circuit - sustains stable gamma ladder bias under dynamic column loading |
| Slew Rate | 7.0 V/μs (CL = 15 pF) - ensures fast transition between gamma curves without visual artifacts |
| Settling Time | 6 μs (CL = 200 pF, RL = 10 kΩ) - meets timing requirements for high-resolution line-inversion panels |
| Operating Temp | −40°C to +105°C - qualified for under-hood and dashboard-mounted automotive displays |
| Input Offset | 20 mV max - preserves gamma curve fidelity across full input common-mode range (0–5 V) |
Pinout & Package
ADD8506WRU-REEL7 is housed in a 24-lead Pb-free TSSOP package (RU-24), 7.70 mm × 4.40 mm × 1.20 mm, compliant with JEDEC MO-153-AD.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA1–INA6 | Analog Input A | Positive gamma voltage input for Channels 1–6; selected when A/B = HIGH |
| INB1–INB6 | Analog Input B | Negative gamma voltage input for Channels 1–6; selected when A/B = LOW |
| OUT1–OUT6 | Buffer Output | High-current, low-impedance (0.20 Ω) gamma reference output per channel |
| VCC1, VCC2, VCC3 | Power Supply | Three dedicated 3.3–6.5 V supply inputs - must be shorted externally for low-noise operation |
| GND (Pins 17, 18) | Ground Return | Dual ground terminals reduce ground bounce during simultaneous channel switching |
| A/B | Digital Control Input | Single-pin global select for all six channels: HIGH → INAx, LOW → INBx |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full-scale gamma voltage delivery (0 V to VCC) without headroom loss |
| 380 mA short-circuit output | Drives heavy capacitive/resistive gamma ladders without droop or instability |
| Stable with 1 nF loads | Eliminates need for external isolation resistors - preserves signal integrity into panel drivers |
| Low 3.9 mA supply current | Reduces thermal load and power budget in space-constrained automotive display modules |
| Automotive-grade temp range | Validated operation from −40°C to +105°C - meets AEC-Q100 stress test requirements |
Applications
| Car Navigation Panels | Personal Media Player Panels |
|---|---|
Use Scenario: High-brightness TFT-LCD in vehicle navigation units requiring flicker-free line inversion. IC Role / Device Role / Timing Role: Gamma reference buffer delivering synchronized dual-voltage curves to column drivers. Use Value: Enables precise grayscale reproduction across wide viewing angles and temperature extremes. |
Use Scenario: Portable media players with compact 4.3"–7" LCDs needing low-power gamma correction. IC Role / Device Role / Timing Role: Muxed gamma voltage source supporting rapid A/B switching during video frame updates. Use Value: Maintains color accuracy while minimizing supply current draw in battery-powered devices. |
| Automotive Infotainment Systems | Industrial HMI Displays |
Use Scenario: Central touchscreen cluster integrating HVAC, audio, and vehicle settings. IC Role / Device Role / Timing Role: Six-channel gamma reference IC providing independent positive/negative inversion control per column group. Use Value: Eliminates vertical banding and improves contrast consistency under varying ambient lighting. |
Use Scenario: Factory-floor HMIs exposed to vibration, EMI, and extended operating cycles. IC Role / Device Role / Timing Role: Robust gamma buffer with dual GND paths and multiple VCC pins for noise immunity. Use Value: Ensures long-term display stability without gamma drift or luminance shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD gamma reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADD8506WRUZ-REEL7 | Pb-free TSSOP-24; identical electrical specs and pinout; RoHS-compliant finish | Same automotive temperature grade (−40°C to +105°C); differs only in packaging (tube vs. reel) | Select for prototyping or low-volume builds where tape-and-reel handling is not required |
| ADD8506WWARUZR7 | Automotive-qualified variant with enhanced process controls and AEC-Q100 documentation | Required for safety-critical automotive applications; includes reliability reports and PPAP support | Select for production programs targeting OEM automotive qualification |
Compared with ADD8506WRU-REEL7, ADD8506WRUZ-REEL7 offers identical performance in a RoHS-compliant package but lacks automotive traceability, while ADD8506WWARUZR7 adds formal AEC-Q100 compliance and reliability reporting-critical for Tier 1 automotive supply chains.
Availability
ADD8506WRU-REEL7 is available at Aetrix Electronics and suitable for car navigation panels, automotive infotainment systems, and industrial HMI displays requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADD8506WRU-REEL7 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 automotive markets since 1965.
The ADD8506WRU-REEL7 belongs to Analog Devices' LCD gamma reference buffer product line, engineered specifically for line-inversion TFT-LCD timing systems in automotive and industrial displays where dual-gamma voltage fidelity and thermal robustness are critical.
FAQ
What is the function of the A/B pin on the ADD8506WRU-REEL7?
The A/B pin is a global digital control input that selects between two gamma voltage sources for all six channels simultaneously: logic HIGH connects each channel's output to its INAx input (positive gamma), and logic LOW connects to INBx (negative gamma). This enables synchronized line inversion without external logic, and the ADD8506WRU-REEL7 maintains <100 nA input current at both logic states to avoid loading external resistor ladders.
Does the ADD8506WRU-REEL7 require external decoupling capacitors?
Yes - the ADD8506WRU-REEL7 requires local 0.1 μF ceramic decoupling capacitors placed as close as possible to each VCC pin (VCC1, VCC2, VCC3) and across each GND pair (Pins 17 & 18). This is mandatory due to high peak output currents (up to 380 mA) and fast slew rates (7.0 V/μs), which can induce supply noise without proper bypassing. The ADD8506WRU-REEL7 datasheet Figure 12 shows this layout explicitly.
Can the ADD8506WRU-REEL7 drive gamma ladders directly without series resistors?
Yes - the ADD8506WRU-REEL7 is designed to drive gamma resistor ladders directly. Its 0.20 Ω output resistance, rail-to-rail capability, and stability with 1 nF loads eliminate the need for series isolation resistors. Adding such resistors degrades settling time and gamma accuracy; the ADD8506WRU-REEL7's low output impedance ensures minimal voltage drop even under dynamic column loading.
What is the maximum load capacitance the ADD8506WRU-REEL7 can drive stably?
The ADD8506WRU-REEL7 is specified to remain stable with up to 1 nF of capacitive load, per the "Stable with 1 nF loads" feature. This exceeds typical gamma ladder node capacitance (typically ≤500 pF), ensuring reliable operation without oscillation. For loads >1 nF, external compensation or current-limiting is required - the ADD8506WRU-REEL7's internal architecture does not support higher capacitance without risk of instability.
Is the ADD8506WRU-REEL7 pin-compatible with other members of the ADD8504/ADD8505/ADD8506 family?
No - the ADD8506WRU-REEL7 uses a 24-lead TSSOP (RU-24) package with unique pin assignments including VCC2, VCC3, and six INB/INA pairs, whereas ADD8504WRUZ-REEL7 (16-lead) and ADD8505WRUZ-REEL7 (20-lead) have fewer channels and different pinouts. Pin compatibility is not supported across the family; PCB layout must match the exact channel count and package footprint of the ADD8506WRU-REEL7.
ADD8506WRU-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- TFT-LCD Panels: Gamma Buffer
- Output Type:
- Rail-to-Rail
- Number of Circuits:
- -
- -3db Bandwidth:
- -
- Slew Rate:
- 7V/µs
- Current - Supply:
- 3.9 mA
- Current - Output / Channel:
- 380 mA
- Voltage - Supply, Single/Dual (±):
- 3.3V ~ 6.5V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 24-TSSOP
ADD8506WRU-REEL7 FAQ
1.How can I place an order for ADD8506WRU-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADD8506WRU-REEL7 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 ADD8506WRU-REEL7 reliable?
The price and inventory of ADD8506WRU-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADD8506WRU-REEL7 is usually 5 days.
3.What payment methods are accepted for ADD8506WRU-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADD8506WRU-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADD8506WRU-REEL7?
ADD8506WRU-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADD8506WRU-REEL7 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 ADD8506WRU-REEL7?
For technical support, including ADD8506WRU-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADD8506WRU-REEL7 requirements.
6.How does Aetrix verify that ADD8506WRU-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADD8506WRU-REEL7 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 ADD8506WRU-REEL7 meets industry standards.
7.What is the process for return or replacement of ADD8506WRU-REEL7?
All ADD8506WRU-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADD8506WRU-REEL7, 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 ADD8506WRU-REEL7 part is unused and in its original packaging.
Return procedure for ADD8506WRU-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADD8506WRU-REEL7 Tags
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LT6552CS8#PBF
Analog Devices Inc.
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LT6205IS5#TRPBF
Analog Devices Inc.
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LT6206IMS8#TRPBF
Analog Devices Inc.
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LT6552CDD#PBF
Analog Devices Inc.
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LT6552IS8#PBF
Analog Devices Inc.
-
LT1252CS8#PBF
Analog Devices Inc.
-
AD818ARZ-REEL7
Analog Devices Inc.
-
MAX4310EUA+
Analog Devices Inc./Maxim Integrated
-
AD829ARZ
Analog Devices Inc.
-
AD810ARZ
Analog Devices Inc.
-
MAX4310ESA+
Analog Devices Inc./Maxim Integrated
-
MAX4313ESA+
Analog Devices Inc./Maxim Integrated
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