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Analog Devices Inc. AD8511ARU-REEL
- Part No.:
- AD8511ARU-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Display Drivers
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
AD8511ARU-REEL.pdf
- Description:
- IC MUX LCD DVR 11CH 3.3V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:30,000
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Product details
Overview
AD8511ARU-REEL from Analog Devices is an 11-channel multiplexed LCD reference buffer IC designed to drive gamma correction resistor ladders in high-resolution column drivers for 64-gray-scale LCD panels. It features A/B input selection per channel, ±120 mA minimum short-circuit output current, 6.2 V/μs slew rate at 250 Ω load, and operates from 3.3 V to 6.5 V single supply. Used in precision display timing paths where stable reference buffering under capacitive and resistive loads is critical.
For engineers reviewing the AD8511ARU-REEL datasheet, AD8511ARU-REEL pinout, AD8511ARU-REEL application, or AD8511ARU-REEL equivalent, key selection criteria include channel count (11), output drive capability (≥120 mA per channel), stability with 1000 pF loads, TSSOP-48 package compatibility, and A/B-selectable dual-input architecture for gamma voltage switching.
Technical Context
The AD8511ARU-REEL implements a parallel 11-channel analog multiplexer architecture with independent A/B select logic per channel, enabling dynamic switching between two reference voltages for LCD column driver gamma correction. Each channel integrates a high-current CMOS output stage optimized for low-output-impedance driving of resistor ladders.
It uses a rail-to-rail output stage capable of sourcing/sinking ≥120 mA while maintaining ≤6 μs settling time (13 mA step) and stable operation with up to 1000 pF capacitive loads-eliminating need for series isolation resistors. Power distribution includes three VCC and three GND pins to manage peak transient currents during simultaneous channel switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel Count | 11 independent buffered outputs (VO1–VO11) with dedicated INA/INB inputs per channel. |
| Supply Voltage Range | 3.3 V to 6.5 V single supply - supports standard LCD bias rails without level-shifting. |
| Output Short-Circuit Current | Min 120 mA per channel - ensures robust drive into low-impedance gamma ladder taps. |
| Slew Rate | 6.2 V/μs (RL = 250 Ω, CL = 15 pF) - enables fast settling for high-frame-rate displays. |
| Settling Time | 3–6 μs (13 mA step) - guarantees accurate gray-scale voltage establishment within pixel update windows. |
| Input Bias Current | Max 50 nA - permits use of high-value resistor ladders (>1 MΩ) to minimize supply current. |
| Load Stability | Stable with 1000 pF capacitive loads - eliminates need for external series resistors on outputs. |
Pinout & Package
AD8511ARU-REEL is housed in a 48-lead Pb-free TSSOP (RV-48) package with exposed thermal pad (JEDEC MO-153-ED compliant). Pin layout supports symmetric power/ground distribution: three VCC pins (Pins 30, 38, 44), three GND pins (Pins 31, 37, 43), and eleven matched INA/INB input pairs routed to minimize crosstalk.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA1–INA11 (Pins 2,4,6,8,10,12,14,16,18,20,23) | Primary reference input (A-side) | Connects to upper-voltage tap of gamma ladder; selected when A/B = HIGH. |
| INB1–INB11 (Pins 3,5,7,9,11,13,15,17,19,21,24) | Secondary reference input (B-side) | Connects to lower-voltage tap; selected when A/B = LOW for inverted gamma segments. |
| VO1–VO11 (Pins 47,42,41,40,39,36,35,34,33,32,26) | Buffered output | Drives individual column driver input; delivers ≥120 mA with <6 μs settling. |
| A/B (Pin 29) | Global channel select control | TTL-compatible digital input that switches all 11 channels simultaneously between INA and INB sources. |
| VCC (Pins 30, 38, 44) | Positive supply | Three distributed supply pins reduce IR drop and improve PSRR during multi-channel slewing. |
| GND (Pins 31, 37, 43) | Ground return | Three dedicated ground pins minimize shared-impedance noise between output channels. |
Key Features
| Feature | Design Value |
|---|---|
| 11-channel gamma reference buffering | Enables full 64-gray-scale support in segment-based LCD column drivers without external multiplexing. |
| A/B input selection per channel | Allows real-time polarity inversion of gamma voltages across all 11 outputs using one control signal. |
| High output current (≥120 mA) | Drives low-impedance gamma ladder nodes directly, eliminating need for external boost stages. |
| Stability with 1000 pF loads | Permits direct connection to long PCB traces or capacitive column driver inputs without phase-margin compensation. |
| Low input bias current (≤50 nA) | Supports >1 MΩ gamma resistor ladders, reducing total bias current by >50% vs. bipolar alternatives. |
| Multi-pin VCC/GND distribution | Reduces ground bounce and supply sag during simultaneous channel switching in high-speed display updates. |
Applications
| Industrial TFT Display Panels | Medical Imaging Monitors |
|---|---|
|
Use Scenario: Driving gamma correction ladders in 1024×768 industrial TFT modules operating at 60 Hz refresh with 64-level grayscale. IC Role / Device Role / Timing Role: Reference buffer providing stable, low-noise, A/B-switchable analog voltages to column driver ICs. Use Value: Ensures consistent gamma curve fidelity across temperature (−40°C to +85°C) and load variations due to 11-channel matching and 6.2 V/μs slew rate. |
Use Scenario: Precision grayscale reproduction in diagnostic-grade medical LCDs requiring ΔE < 2 color accuracy and flicker-free operation. IC Role / Device Role / Timing Role: High-stability voltage reference buffer for column driver bias networks, synchronized to frame timing controller via A/B pin. Use Value: 50 nA max input bias enables ultra-high-impedance gamma ladders, minimizing thermal drift and power dissipation in sealed enclosures. |
| Automotive Infotainment Displays | Test & Measurement Equipment UIs |
|
Use Scenario: Wide-temperature automotive center-stack displays (−40°C to +85°C) with dynamic gamma adjustment for ambient light compensation. IC Role / Device Role / Timing Role: Dual-reference buffer enabling real-time gamma reconfiguration via A/B control during brightness mode transitions. Use Value: 120 mA output current sustains voltage accuracy under varying column load capacitance across wide temperature range without external compensation. |
Use Scenario: High-fidelity waveform display in oscilloscopes and spectrum analyzers requiring precise grayscale linearity for measurement overlays. IC Role / Device Role / Timing Role: Reference voltage conditioner for segmented LCD drivers in front-panel displays with strict monotonicity requirements. Use Value: 3–6 μs settling time ensures gamma voltage settles fully within <10 μs display update windows, preventing grayscale banding artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD reference buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CL-FP6131 | 11-channel like AD8511ARU-REEL but includes EN_11 pin to disable 2 channels; higher quiescent current (12 mA vs. 10 mA). | EN_11 allows 9-channel mode; AD8511ARU-REEL lacks this pin and is fixed 11-channel. | Select CL-FP6131 only if dynamic channel count reduction is required; otherwise AD8511ARU-REEL offers lower ISY and tighter matching. |
| LMC6009 | 9-channel device (vs. 11); pin-compatible but fewer outputs; 300 mA short-circuit current (vs. 120 mA min). | Designed for smaller displays (e.g., 480×272); insufficient for full 64-gray-scale 11-output systems. | Use LMC6009 only for 9-channel designs; AD8511ARU-REEL provides exact channel count match and better thermal performance in TSSOP-48. |
Compared with CL-FP6131 and LMC6009, AD8511ARU-REEL delivers optimal channel count alignment for 11-output gamma systems, lower supply current than CL-FP6131, and higher channel density than LMC6009-making it the most direct fit for new 64-gray-scale TFT designs requiring minimal BOM changes.
Availability
AD8511ARU-REEL is available at Aetrix Electronics and suitable for industrial TFT display panels, medical imaging monitors, automotive infotainment displays, and test & measurement equipment UIs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8511ARU-REEL 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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design and manufacturing expertise spanning precision amplifiers, data converters, and interface ICs.
The AD8511ARU-REEL belongs to Analog Devices' LCD reference buffer product line, engineered specifically for gamma voltage conditioning in high-resolution, high-reliability display subsystems requiring tight channel-to-channel matching and wide-temperature stability.
FAQ
What is the function of the A/B pin on the AD8511ARU-REEL?
The A/B pin (Pin 29) is a TTL-compatible digital control input that globally selects between the INA and INB reference voltage inputs for all 11 channels simultaneously. When A/B is logic high, all VOx outputs follow their respective INA inputs; when low, they follow INB inputs. This enables real-time gamma polarity inversion across the entire display without per-channel control logic, and AD8511ARU-REEL requires no external pull-up/down resistors on this pin as its input thresholds are defined at 0.8 V (VIL) and 2.0 V (VIH).
Does the AD8511ARU-REEL require external compensation for capacitive loads?
No, the AD8511ARU-REEL is internally compensated and specified to remain stable with capacitive loads up to 1000 pF, including direct connection to LCD column driver inputs and long PCB traces. Its design eliminates the need for series isolation resistors or external RC networks-unlike many general-purpose op amps-and AD8511ARU-REEL maintains phase margin and settling performance without user-adjustable compensation components.
How many power and ground connections does the AD8511ARU-REEL have, and why?
The AD8511ARU-REEL has three VCC pins (30, 38, 44) and three GND pins (31, 37, 43) to handle high peak output currents (≥120 mA per channel) and minimize supply-induced crosstalk. This distributed power architecture reduces impedance in the supply path, suppresses ground bounce during simultaneous channel slewing, and improves PSRR-critical for maintaining gamma voltage accuracy in multi-channel LCD drivers, and AD8511ARU-REEL datasheet Figure 8 confirms low supply current variation across common-mode voltage range.
What is the maximum operating temperature range for the AD8511ARU-REEL?
The AD8511ARU-REEL is rated for continuous operation from −40°C to +85°C, matching industrial and automotive infotainment display requirements. Its electrical specifications-including offset voltage (20 mV max), output voltage swing (4.8 V high / 200 mV low at ±20 mA), and supply current (10 mA typ at 2.5 V input)-are guaranteed across this full range, and AD8511ARU-REEL's thermal resistance (θJA = 115°C/W in TSSOP) ensures safe junction temperatures under typical display bias conditions.
Is the AD8511ARU-REEL pin-compatible with the AD8509ARU-REEL?
No, the AD8511ARU-REEL and AD8509ARU-REEL are not pin-compatible: AD8511ARU-REEL uses Pins 23 and 24 for INA11 and INB11, and Pin 26 for VO11, whereas AD8509ARU-REEL assigns those pins as NC. The pinouts differ in both TSSOP packages-AD8511ARU-REEL has 11 active input/output pairs versus 9-and AD8511ARU-REEL's functional block diagram and Pin Function Descriptions table (Rev. C, Page 5) confirm distinct terminal assignments that prevent direct PCB substitution.
AD8511ARU-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Display Type:
- LCD
- Configuration:
- 64 grey scale
- Interface:
- -
- Digits or Characters:
- -
- Current - Supply:
- 10 mA
- Voltage - Supply:
- 3.3V ~ 6.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
AD8511ARU-REEL FAQ
1.How can I place an order for AD8511ARU-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8511ARU-REEL 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 AD8511ARU-REEL reliable?
The price and inventory of AD8511ARU-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8511ARU-REEL is usually 5 days.
3.What payment methods are accepted for AD8511ARU-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8511ARU-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8511ARU-REEL?
AD8511ARU-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8511ARU-REEL 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 AD8511ARU-REEL?
For technical support, including AD8511ARU-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8511ARU-REEL requirements.
6.How does Aetrix verify that AD8511ARU-REEL is sourced from the original manufacturer or authorized distributors?
All AD8511ARU-REEL 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 AD8511ARU-REEL meets industry standards.
7.What is the process for return or replacement of AD8511ARU-REEL?
All AD8511ARU-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8511ARU-REEL, 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 AD8511ARU-REEL part is unused and in its original packaging.
Return procedure for AD8511ARU-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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