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Analog Devices Inc. AD8509ARUZ-REEL
- Part No.:
- AD8509ARUZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Display Drivers
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
AD8509ARUZ-REEL.pdf
- Description:
- IC DRVR 64 GREY SCALE 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,884
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Product details
Overview
AD8509ARUZ-REEL from Analog Devices is a 9-channel, multiplexed-input LCD reference buffer IC designed to drive gamma correction resistor ladders in column drivers for 64-gray-scale LCD panels. It features A/B input selection (logic-controlled), ±20 mA output drive capability, 6.2 V/μs slew rate at 250 Ω load, and stable operation with 1000 pF capacitive loads - enabling high-fidelity gray scale reproduction in industrial and medical display systems.
For engineers reviewing the AD8509ARUZ-REEL datasheet, AD8509ARUZ-REEL pinout, AD8509ARUZ-REEL application, or AD8509ARUZ-REEL equivalent, key selection criteria include channel count (9 vs. 11), TSSOP-48 package compatibility, single-supply operation (3.3 V–6.5 V), output current headroom for dynamic gamma ladder loading, and absence of enable control versus CL-FP6131.
Technical Context
The AD8509ARUZ-REEL implements a 9-channel analog multiplexer architecture where each channel pairs two independent inputs (INAx/INBx) and selects one via the global A/B logic pin. All outputs (VO1–VO9) are unity-gain buffered, rail-to-rail capable, and optimized for low distortion under varying resistive-capacitive loads typical of LCD gamma reference networks.
It operates across −40°C to +85°C with 8.5 mA typical supply current at 5 V, 2.5 V common-mode input, and delivers 3 μs to 6 μs settling time (13 mA sink/source). Its 50 nA max input bias current enables use of high-value resistor ladders to minimize system power consumption without degrading accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 9 independent buffered outputs (VO1–VO9) for gamma reference distribution |
| Supply Voltage | 3.3 V to 6.5 V single supply - supports standard LCD bias rails without dual supplies |
| Output Drive | ±20 mA min output swing (VOH = 4.8 V, VOL = 200 mV at ±20 mA) - sustains voltage accuracy under column driver loading |
| Slew Rate | 6.2 V/μs at RL = 250 Ω, CL = 15 pF - ensures fast transient response during gamma voltage switching |
| Input Bias Current | 50 nA max - permits >1 MΩ resistor ladder design without significant error contribution |
| Settling Time | 3 μs to 6 μs (to ±0.1% with 13 mA sink/source) - meets timing budget for high-refresh-rate LCDs |
| Stability | Stable with ≥1000 pF capacitive loads - eliminates need for series isolation resistors at outputs |
Pinout & Package
AD8509ARUZ-REEL is housed in a Pb-free, 48-lead TSSOP (RV-48) package measuring 12.5 mm × 6.1 mm × 1.2 mm, with exposed thermal pad not connected internally. All VCC (pins 30, 38, 44) and GND (pins 31, 37, 43) pins must be externally connected and bypassed per layout guidelines to support peak output currents.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA1–INA9 (pins 4,6,8,10,12,14,16,18,20) | MUX Input A | First set of nine reference voltage inputs selected when A/B = logic high |
| INB1–INB9 (pins 5,7,9,11,13,15,17,19,21) | MUX Input B | Second set of nine reference voltage inputs selected when A/B = logic low |
| VO1–VO9 (pins 32–36,39–42) | Buffered Output | Unity-gain, low-impedance outputs driving gamma ladder nodes; stable with 1000 pF |
| A/B (pin 29) | Logic Select Input | TTL/CMOS-compatible control pin determining INAx vs. INBx routing to VOx |
| VCC (pins 30,38,44) | Power Supply | Three dedicated supply pins reduce IR drop and improve PSRR under dynamic load |
| GND (pins 31,37,43) | Ground Reference | Three ground pins provide low-inductance return paths for high-frequency output currents |
Key Features
| Feature | Design Value |
|---|---|
| 9-channel muxed reference buffering | Enables compact gamma correction for 64-gray-scale LCDs using single IC instead of discrete op-amps |
| A/B logic-select architecture | Reduces external control lines by sharing one digital input across all 9 channels for dual-voltage gamma sets |
| High-output-current buffers | Delivers ±20 mA per channel while maintaining <200 mV dropout - critical for driving low-impedance ladder taps |
| Low input bias current (50 nA max) | Allows >1 MΩ gamma resistor values, cutting ladder power dissipation by >50% vs. 100 kΩ designs |
| Capacitive-load stability (1000 pF) | Eliminates series output resistors that degrade settling time and introduce gain error in precision references |
Applications
| Medical Diagnostic Displays | Industrial HMI Panels |
|---|---|
|
Use Scenario: Driving gamma reference ladders in high-resolution monochrome LCDs used in ultrasound and X-ray console displays requiring precise 64-level grayscale fidelity. IC Role / Device Role / Timing Role: 9-channel reference buffer selecting between positive/negative gamma voltages via A/B pin to calibrate pixel intensity linearity. Use Value: 3–6 μs settling time and ±20 mA drive ensure stable reference levels during rapid image frame updates, preventing grayscale banding artifacts. |
Use Scenario: Providing programmable gamma correction in ruggedized factory-floor HMIs with wide temperature operation (−40°C to +85°C). IC Role / Device Role / Timing Role: Multiplexed buffer delivering matched reference voltages to column driver ICs under variable EMI and thermal stress. Use Value: 50 nA input bias current enables high-resistance ladders that minimize self-heating drift, preserving calibration over extended runtime. |
| Test & Measurement Equipment | Avionics Display Systems |
|
Use Scenario: Generating calibrated reference voltages for LCD-based waveform analyzers and spectrum display modules requiring traceable grayscale accuracy. IC Role / Device Role / Timing Role: Precision buffer isolating DAC outputs from gamma ladder impedance variations while maintaining DC accuracy. Use Value: 20 mV max offset voltage and 0.985 V/V gain ensure <0.2% full-scale error in reference distribution network. |
Use Scenario: Supporting MIL-STD-810-compliant cockpit displays where reliability across vibration, shock, and thermal cycling is mandatory. IC Role / Device Role / Timing Role: Radiation-tolerant CMOS buffer with multiple VCC/GND pins ensuring robust power delivery during transient load spikes. Use Value: Triple VCC and triple GND pins lower effective supply impedance, reducing noise coupling into sensitive analog reference paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD reference buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6009IMX/NOPB | 9-channel, pin-compatible, but higher 100 nA input bias current and no A/B select logic; requires external mux control. | Lacks integrated A/B selection - increases PCB complexity and timing coordination overhead for dual-gamma systems. | Choose LMC6009IMX/NOPB only if A/B functionality is implemented externally and higher input bias is acceptable. |
| CL-FP6131 | 11-channel with EN_11 pin to disable two channels; AD8509ARUZ-REEL has fixed 9-channel configuration and no enable. | EN_11 allows dynamic reconfiguration between 9- and 11-channel modes; AD8509ARUZ-REEL is fixed 9-channel with simpler control interface. | Select AD8509ARUZ-REEL when stable 9-channel operation suffices and board space favors elimination of enable logic. |
Compared with LMC6009IMX/NOPB, AD8509ARUZ-REEL reduces input error by 2× via lower bias current and simplifies system timing with integrated A/B control; compared with CL-FP6131, it trades channel flexibility for deterministic 9-channel behavior and smaller footprint in TSSOP-48.
Availability
AD8509ARUZ-REEL is available at Aetrix Electronics and suitable for medical diagnostic displays, industrial HMI panels, and avionics display systems requiring stable component supply, Pb-free compliance, and guaranteed −40°C to +85°C operation.
Supply support for AD8509ARUZ-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.
The AD8509ARUZ-REEL belongs to Analog Devices' LCD reference buffer product line, engineered specifically for gamma correction in high-fidelity grayscale LCD systems with emphasis on low power, high drive strength, and temperature-stable performance.
FAQ
What is the function of the A/B pin on the AD8509ARUZ-REEL?
The A/B pin on the AD8509ARUZ-REEL is a logic-controlled input that globally selects between two sets of reference voltages: when A/B = logic high, INA1–INA9 are routed to VO1–VO9; when A/B = logic low, INB1–INB9 are routed instead. This enables dual-gamma programming without external multiplexers, and the pin accepts standard TTL/CMOS logic levels (VIL ≤ 0.8 V, VIH ≥ 2.0 V) per the AD8509ARUZ-REEL datasheet specifications.
Does the AD8509ARUZ-REEL require external compensation for capacitive loads?
No, the AD8509ARUZ-REEL is internally compensated and specified to remain stable with capacitive loads up to 1000 pF, eliminating the need for series output resistors or external compensation networks. This design choice preserves signal integrity and settling speed in LCD gamma ladder applications where output nodes connect directly to high-capacitance traces and driver inputs.
How many power and ground connections does the AD8509ARUZ-REEL have, and why?
The AD8509ARUZ-REEL has three VCC pins (30, 38, 44) and three GND pins (31, 37, 43) to minimize supply impedance and maintain stability under high peak output currents. This multi-pin configuration reduces voltage droop and improves PSRR during simultaneous switching of multiple outputs - a critical requirement for maintaining gamma reference accuracy in large-format LCDs driven by the AD8509ARUZ-REEL.
Is the AD8509ARUZ-REEL pin-compatible with the AD8511ARUZ-REEL?
No, the AD8509ARUZ-REEL and AD8511ARUZ-REEL are not pin-compatible: the AD8509ARUZ-REEL is a 9-channel device with VO1–VO9 occupying pins 32–36 and 39–42, while the AD8511ARUZ-REEL adds VO10 and VO11 (pins 32 and 26), relocating several INBx and NC pins. Their pinouts differ significantly despite shared TSSOP-48 packaging, so PCB layout is not interchangeable.
What is the maximum operating temperature range for the AD8509ARUZ-REEL?
The AD8509ARUZ-REEL is rated for continuous operation from −40°C to +85°C, matching the industrial temperature grade required for deployment in harsh environments such as factory automation HMIs and outdoor medical equipment. This range is validated per the Absolute Maximum Ratings table and confirmed in the Ordering Guide for the "ARUZ" suffix variant.
AD8509ARUZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Display Type:
- LCD
- Configuration:
- 64 grey scale
- Interface:
- -
- Digits or Characters:
- -
- Current - Supply:
- 8.5 mA
- Voltage - Supply:
- 3.3V ~ 6.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
AD8509ARUZ-REEL FAQ
1.How can I place an order for AD8509ARUZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8509ARUZ-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 AD8509ARUZ-REEL reliable?
The price and inventory of AD8509ARUZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8509ARUZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8509ARUZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8509ARUZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8509ARUZ-REEL?
AD8509ARUZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8509ARUZ-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 AD8509ARUZ-REEL?
For technical support, including AD8509ARUZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8509ARUZ-REEL requirements.
6.How does Aetrix verify that AD8509ARUZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8509ARUZ-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 AD8509ARUZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8509ARUZ-REEL?
All AD8509ARUZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8509ARUZ-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 AD8509ARUZ-REEL part is unused and in its original packaging.
Return procedure for AD8509ARUZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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