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Analog Devices Inc. AD8567ARU
- Part No.:
- AD8567ARU
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD8567ARU.pdf
- Description:
- IC OPAMP GP R-R 5MHZ 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:17,443
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Product details
Overview
AD8567ARU from Analog Devices is a quad-channel, rail-to-rail input/output operational amplifier optimized for LCD VCOM and grayscale reference buffer applications. It operates from 4.5 V to 16 V single supply, delivers 35 mA continuous output current per channel, achieves 6 V/μs slew rate, and maintains <10 mV offset voltage over −40°C to +85°C. Its high capacitive load drive supports 1 μF without compensation.
For engineers reviewing the AD8567ARU datasheet, AD8567ARU pinout, AD8567ARU application, or AD8567ARU equivalent, key selection criteria include quad-channel rail-to-rail I/O performance at 16 V, 35 mA output drive per amplifier, thermal pad handling in TSSOP, automotive-grade qualification status, and compatibility with LCD panel timing and settling requirements.
Technical Context
The AD8567ARU employs a dual PNP bipolar input stage with diode protection networks enabling true rail-to-rail common-mode input range (−0.5 V to VS + 0.5 V) and low input bias current (80–800 nA). Its complementary common-source output stage delivers rail-to-rail swing with VOH ≥ 15.75 V and VOL ≤ 250 mV at 5 mA load under full temperature range.
This architecture supports unity-gain stability with large capacitive loads up to 1 μF, exhibits 65° phase margin, and provides 75 dB channel separation-critical for multi-channel VCOM driver integrity in active-matrix LCD systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 16 V - Enables direct use with standard LCD panel supplies without regulation overhead. |
| Offset Voltage | 10 mV max - Ensures accurate DC level setting for VCOM bias, minimizing image flicker and grayscale error. |
| Slew Rate | 6 V/μs - Supports fast settling of VCOM voltage during frame updates in high-resolution displays. |
| Continuous Output Current | 35 mA per amplifier - Sustains drive into typical LCD panel capacitance and resistance without thermal derating. |
| Gain Bandwidth Product | 5 MHz - Provides adequate loop bandwidth for closed-loop VCOM control with phase margin >65°. |
| Input Common-Mode Range | −0.5 V to VS + 0.5 V - Allows direct connection to digital logic or DAC outputs referenced to system ground or supply rails. |
| Operating Temperature | −40°C to +85°C - Qualified for industrial and automotive infotainment display environments. |
Pinout & Package
AD8567ARU is packaged in a 14-lead TSSOP (RU-14) with exposed thermal pad connected to Pin 4 (V+). The package measures 5.10 mm × 4.50 mm × 1.20 mm and requires soldering of the thermal pad to a V+ copper pour for thermal reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - Drives one segment of LCD VCOM or grayscale reference network. |
| 2 | +IN A | Inverting input for Amp A - Typically tied to feedback node in unity-gain buffer configuration. |
| 3 | −IN A | Non-inverting input for Amp A - Receives reference voltage from DAC or resistor divider. |
| 4 | V+ | Positive supply rail - Also connects to exposed thermal pad; must be routed with low-impedance copper. |
| 5 | −IN B | Non-inverting input for Amp B - Independent channel for second VCOM or reference path. |
| 6 | +IN B | Inverting input for Amp B - Used in differential or feedback configurations per channel. |
| 7 | OUT B | Amplifier B output - Electrically isolated channel supporting dual-VCOM or redundancy schemes. |
| 8 | OUT C | Amplifier C output - Third independent output for multi-zone LCD biasing. |
| 9 | +IN C | Inverting input for Amp C - Maintains signal integrity across all four channels. |
| 10 | −IN C | Non-inverting input for Amp C - Matches input structure of other amplifiers for consistent DC performance. |
| 11 | V− | Negative supply rail (GND) - Shared return for all four amplifiers; requires low-inductance grounding. |
| 12 | −IN D | Non-inverting input for Amp D - Enables full quad-channel buffering without external multiplexing. |
| 13 | +IN D | Inverting input for Amp D - Supports independent gain or filtering per channel. |
| 14 | OUT D | Amplifier D output - Final channel for quad-VCOM, gamma correction, or auxiliary reference generation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables operation with inputs down to −0.5 V and outputs within 5 mV of rails - critical for maximizing dynamic range in 16 V LCD systems. |
| 35 mA continuous output drive per channel | Supports direct driving of high-capacitance LCD panels (≥100 nF) without external buffers - reduces BOM count and layout area. |
| Unity-gain stable with 1 μF capacitive load | Eliminates need for isolation resistors or compensation networks in VCOM driver circuits - improves transient response and simplifies design. |
| Low 700 μA supply current per amplifier | Reduces total quiescent power to <2.8 mA for quad operation - essential for portable and thermally constrained display modules. |
| Qualified for automotive applications | Meets AEC-Q100 stress test requirements - suitable for instrument cluster and center-stack infotainment displays. |
Applications
| LCD VCOM Driver | Grayscale Reference Buffer |
|---|---|
Use Scenario: Driving common electrode (VCOM) voltage in active-matrix TFT-LCD panels requiring precise AC-coupled bias with fast settling between frames. IC Role / Device Role / Timing Role: Quad-channel rail-to-rail op amp configured as unity-gain buffers, each sourcing/sinking >250 mA peak current to charge/discharge panel capacitance. Use Value: Eliminates need for discrete MOSFET drivers; 6 V/μs slew rate ensures <10 µs settling for 1080p refresh cycles, reducing motion blur and crosstalk. |
Use Scenario: Buffering gamma-correction DAC outputs to generate stable grayscale reference voltages for source driver ICs in high-color-depth displays. IC Role / Device Role / Timing Role: Four independent low-offset amplifiers delivering matched DC levels with <10 mV error across −40°C to +85°C. Use Value: Maintains grayscale linearity and color fidelity by minimizing offset drift-induced banding artifacts in 10-bit+ display systems. |
| Automotive Infotainment Display | Portable LCD Monitor |
Use Scenario: Providing robust VCOM and reference buffering in vehicle dashboard displays subject to wide temperature swings and EMI. IC Role / Device Role / Timing Role: Automotive-qualified quad op amp operating from 12 V battery-derived 16 V rail, with thermal pad attached to V+ for enhanced reliability. Use Value: Survives cold-crank (4.5 V) and load-dump (16 V) conditions while maintaining 35 mA drive capability - avoids display blanking or distortion. |
Use Scenario: Power-efficient VCOM generation in battery-powered tablets and portable monitors where thermal and space constraints are critical. IC Role / Device Role / Timing Role: Low-quiescent-current (700 μA/channel) quad amplifier in 14-lead TSSOP, enabling compact 4-layer PCB layouts. Use Value: Reduces total supply current to <3 mA, extending battery life without sacrificing VCOM accuracy or settling speed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8567ACPZ-REEL | Same die in 16-lead LFCSP with exposed thermal pad connected to V+; θJA = 381°C/W vs. TSSOP's 180°C/W. | Better thermal performance for high-duty-cycle VCOM applications; requires 4-layer board with thermal vias. | Select when ambient temperature exceeds 70°C or continuous output current >25 mA per channel is required. |
| LMV324IDR | Quad rail-to-rail op amp with lower 1.2 MHz GBW, 1 V/μs slew rate, and 3 mA supply current per channel. | Not qualified for automotive; limited to ≤5.5 V supply; unsuitable for 16 V LCD panels or 1 μF load drive. | Acceptable only for low-voltage (<6 V), low-speed portable displays where cost is primary constraint. |
Compared with AD8567ACPZ-REEL, AD8567ARU offers superior thermal resistance in TSSOP for moderate-power applications without LFCSP assembly complexity; compared with LMV324IDR, AD8567ARU delivers 5× higher slew rate and 16 V operation - essential for modern LCD timing and voltage headroom.
Availability
AD8567ARU is available at Aetrix Electronics and suitable for LCD VCOM driver designs, automotive infotainment displays, and portable monitor reference buffer circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8567ARU 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, headquartered in Norwood, MA, with R&D and manufacturing facilities worldwide.
The AD856x family was designed specifically for LCD panel timing and biasing applications, emphasizing high output current, rail-to-rail operation, and capacitive load stability - addressing core challenges in flat-panel display electronics.
FAQ
What is the maximum continuous output current per channel for AD8567ARU?
The AD8567ARU delivers 35 mA continuous output current per amplifier across −40°C to +85°C. This rating is specified in the Electrical Characteristics table (Page 3) and validated under worst-case thermal conditions in the 14-lead TSSOP package. Exceeding this current continuously may cause thermal shutdown or parametric shift. For peak transient loads, the device supports up to 250 mA, but sustained operation above 35 mA requires thermal derating per Figure 30 in the datasheet.
Does AD8567ARU require external compensation when driving 1 μF capacitive loads?
No, AD8567ARU is unity-gain stable with up to 1 μF capacitive loads without external compensation components. This capability is explicitly stated in the General Description (Page 1) and confirmed in the LCD Panel Applications section (Page 11), where it notes "At unity gain, it can drive 1 μF without compensation." The internal compensation network enables this performance while maintaining 65° phase margin per Table 1.
How is the thermal pad on AD8567ARU connected, and why does it matter?
The AD8567ARU uses a 14-lead TSSOP package (RU-14) with no exposed thermal pad - unlike the LFCSP variant AD8567ACPZ. Therefore, AD8567ARU does not have a thermal pad to connect. Thermal management relies on standard PCB copper pour under pins and proper trace routing. Confusion may arise because Figure 4 in the datasheet shows the LFCSP variant; AD8567ARU corresponds exclusively to Figure 3 (14-lead TSSOP).
Is AD8567ARU qualified for automotive applications?
AD8567ARU is rated for −40°C to +85°C operation and meets industrial temperature specifications, but it is not AEC-Q100 qualified. Only the AD8566WARMZ (dual version) is explicitly designated as automotive grade in the Ordering Guide (Page 13). AD8567ARU is suitable for commercial/industrial displays; for automotive instrument clusters or infotainment, designers should verify system-level qualification testing or consider the WARMZ variant if dual-channel suffices.
What is the input common-mode voltage range for AD8567ARU?
The input common-mode voltage range for AD8567ARU is −0.5 V to VS + 0.5 V, as specified in Table 1 (Page 3) under "Input Voltage Range." This rail-to-rail input capability allows direct interfacing with DACs, microcontroller GPIOs, or resistor dividers referenced to ground or supply rails - critical for precision VCOM and grayscale reference generation in LCD systems.
AD8567ARU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 6V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 80 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 700µA (x4 Channels)
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
AD8567ARU FAQ
1.How can I place an order for AD8567ARU through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8567ARU 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 AD8567ARU reliable?
The price and inventory of AD8567ARU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8567ARU is usually 5 days.
3.What payment methods are accepted for AD8567ARU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8567ARU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8567ARU?
AD8567ARU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8567ARU 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 AD8567ARU?
For technical support, including AD8567ARU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8567ARU requirements.
6.How does Aetrix verify that AD8567ARU is sourced from the original manufacturer or authorized distributors?
All AD8567ARU 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 AD8567ARU meets industry standards.
7.What is the process for return or replacement of AD8567ARU?
All AD8567ARU units undergo pre-shipment inspection (PSI). If there is an issue with AD8567ARU, 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 AD8567ARU part is unused and in its original packaging.
Return procedure for AD8567ARU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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