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Renesas ISL76534ARXZ
- Part No.:
- ISL76534ARXZ
- Manufacturer:
- Renesas
- Category:
- Video Amps and Modules
- Package:
- 28-XFQFN Exposed Pad
- Datasheet:
-
ISL76534ARXZ.pdf
- Description:
- IC AMP BUFFER 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,305
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Product details
Overview
ISL76534ARXZ from Renesas (formerly Intersil) is an ultra-low-power, AEC-Q100 qualified 14-channel gamma reference voltage generator with integrated 10-bit VCOM calibrator DAC and high-current VCOM amplifier, all in a single 28-lead X2QFN package. It delivers programmable gamma voltages (OUT1–OUT14) and VCOM output (OUTCOM) for TFT-LCD panels, featuring 10-bit resolution, EEPROM storage (10,000 write cycles, 20-year data retention at 105°C), and operation across –40°C to +105°C.
For engineers reviewing the ISL76534ARXZ datasheet, ISL76534ARXZ pinout, ISL76534ARXZ application, or ISL76534ARXZ equivalent, key selection criteria include its dual-role gamma/VCOM architecture, I²C programmability (up to 400 kHz), ultra-low quiescent power (12 mW typical at 8 V AVDD), PSRR of 75 dB, and automotive-grade thermal and reliability specs.
Technical Context
The ISL76534ARXZ integrates 14 independent 10-bit gamma DACs and one dedicated 10-bit VCOM DAC, each buffered for low-impedance driving. Its analog core operates from 6.3 V to 19 V AVDD and 4.5 V to AVDD AVDD_AMP, while digital logic runs on 2.25 V to 3.6 V DVDD - enabling flexible power domain partitioning in automotive display systems.
It uses a standard I²C interface (SCL/SDA) with configurable 7-bit address (default 0x74 via A0 pin), write protection (WP pin), and EEPROM recall-on-power-up. All DAC outputs feature ±60 mA per channel sourcing/sinking capability, and the VCOM amplifier delivers ±100 mA with 5 MHz bandwidth and 4–10 V/µs slew rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gamma Channels | 14 independent, buffered 10-bit DAC outputs (OUT1–OUT14) for column driver reference voltage generation |
| VCOM Channel | 1 dedicated 10-bit VCOM calibrator DAC + high-current amplifier (OUTCOM), ±100 mA drive, 5 MHz bandwidth |
| Power Supply Ranges | AVDD: 6.3–19 V; AVDD_AMP: 4.5 V to AVDD; DVDD: 2.25–3.6 V - supports wide-input automotive supply rails |
| Quiescent Power | 12 mW typical at 8 V AVDD - enables low-thermal-budget placement near LCD panel drivers |
| EEPROM Retention | 20 years at 105°C - ensures long-term gamma/VCOM calibration stability in harsh automotive environments |
| PSRR | 75 dB typical (gamma outputs); 70 dB typical (VCOM output) - suppresses supply noise from noisy DC/DC converters |
| Operating Temp | –40°C to +105°C ambient - fully qualified for automotive infotainment and instrument cluster applications |
Pinout & Package
ISL76534ARXZ is housed in a thermally enhanced, Pb-free, RoHS-compliant 28-lead X2QFN package (4 mm × 5 mm, max height 0.4 mm) with an exposed thermal pad electrically connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1–OUT14 | Analog Output | 10-bit programmable gamma reference voltage outputs; each capable of ±60 mA drive into column driver DAC references |
| OUTCOM | Analog Output | VCOM amplifier output; ±100 mA drive, 5 MHz bandwidth, used to bias LCD common electrode |
| REFIN | Analog Input | High-impedance buffered reference input (5 V to AVDD) for all 15 DACs; requires local 0.1 µF bypass |
| AVDD / AVDD_AMP | Analog Power | Separate analog supplies: AVDD powers gamma DACs; AVDD_AMP powers VCOM amplifier - allows independent rail optimization |
| DVDD | Digital Power | 2.25–3.6 V supply for I²C interface and control logic; decoupling critical for noise immunity |
| SCL / SDA | I²C Interface | Standard two-wire bus (up to 400 kHz); open-drain SDA, high-impedance SCL - requires external pull-ups |
| WP | Digital Input | Active-low write protection; floating = write-disabled (default), pulled high = EEPROM/DAC register writes enabled |
| A0 | Digital Input | LSB of I²C address (0x74 default if floating); internal 10 MΩ pull-down - enables dual-device addressing on same bus |
| GND (Pins 1,2,3,4,5,6,7,16,17,18,19,20,21,11,23,26) | Power Ground | Multiple GND pins + thermal pad (electrically tied to GND) - minimize ground impedance and enhance thermal dissipation |
| INN_COM | Analog Input | Inverting input of VCOM amplifier; connects to feedback network for precise VCOM level setting |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Gamma + VCOM Solution | Eliminates need for separate gamma buffer and VCOM driver ICs - reduces BOM count and PCB area in TFT-LCD timing controller designs |
| Automotive EEPROM | 10,000 write cycles and 20-year data retention at 105°C - enables field-updatable gamma curves without recalibration hardware |
| Ultra-Low Quiescent Power | 12 mW typical at 8 V AVDD - extends battery life in always-on automotive displays and reduces thermal load near sensitive LCD glass |
| High PSRR (75 dB) | Rejects ripple from switching power supplies feeding AVDD - prevents visible banding or flicker in displayed images |
| AEC-Q100 Qualified | Grade 2 (–40°C to +105°C) qualification with full stress testing - meets OEM requirements for infotainment, CID, and instrument cluster deployments |
Applications
| Automotive Infotainment Display | Automotive Instrument Cluster |
|---|---|
|
Use Scenario: Central touchscreen display in vehicle cabin requiring precise grayscale reproduction and consistent brightness across temperature. IC Role / Device Role / Timing Role: Generates 14 gamma reference voltages for column driver DACs and sets VCOM bias to maintain contrast ratio and color fidelity. Use Value: Enables factory and field gamma tuning via I²C; EEPROM retention ensures calibration integrity over 15+ year vehicle lifetime. |
Use Scenario: Digital gauge cluster with high-resolution TFT-LCD showing speed, RPM, warnings, and ADAS status under varying ambient light and temperature. IC Role / Device Role / Timing Role: Provides stable, low-noise gamma references and fast-settling VCOM voltage synchronized to display frame rate. Use Value: PSRR of 75 dB suppresses noise from nearby MCU/DC-DC converters; ±100 mA VCOM drive handles large-panel capacitive loads. |
| Automotive Center Information Display (CID) | Automotive Smart Mirror |
|
Use Scenario: High-brightness, sunlight-readable center console display integrating navigation, media, and vehicle settings. IC Role / Device Role / Timing Role: Delivers programmable gamma curve optimized for wide viewing angles and dynamic content, plus precision VCOM control for uniform backlight modulation. Use Value: 10-bit resolution (1024 steps) enables fine-grained gamma adjustment; 28-pin X2QFN fits tight layout constraints behind compact displays. |
Use Scenario: Electrochromic or reflective smart mirror with embedded TFT overlay for HUD-like information (e.g., turn indicators, blind-spot alerts). IC Role / Device Role / Timing Role: Supplies low-power, high-accuracy gamma and VCOM references to drive small-form-factor LCD overlay without thermal derating. Use Value: Ultra-thin 0.4 mm package height avoids mechanical interference; 12 mW quiescent power minimizes self-heating in sealed mirror housing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar gamma reference and VCOM generation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9633ETJ+ | Single-channel 12-bit VCOM calibrator only; no gamma DACs; requires external gamma buffer; 32-TQFN package | Only suitable when gamma generation is handled separately (e.g., by timing controller); lacks integrated EEPROM | Select if system already implements gamma via FPGA or SoC and only needs precision VCOM tuning. |
| TBD7201AFNG | 16-channel gamma buffer (10-bit) with no VCOM amplifier; no EEPROM; 32-HTSSOP; higher quiescent current (~25 mW) | Requires discrete VCOM driver IC and external nonvolatile storage; not AEC-Q100 qualified | Choose for cost-sensitive industrial displays where automotive qualification and EEPROM are not required. |
Compared with MAX9633ETJ+ and TBD7201AFNG, the ISL76534ARXZ uniquely integrates both gamma and VCOM functions with automotive-grade EEPROM, enabling single-chip, field-programmable display calibration - reducing component count, layout complexity, and long-term calibration maintenance.
Availability
ISL76534ARXZ is available at Aetrix Electronics and suitable for automotive infotainment display, instrument cluster display, and center information display (CID) applications requiring stable component supply, AEC-Q100 compliance, and long-term calibration integrity.
Supply support for ISL76534ARXZ 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
Renesas Electronics Corporation (formerly Intersil) is a global semiconductor leader specializing in microcontrollers, analog power, and trusted embedded solutions for automotive, industrial, and IoT markets.
The ISL76534ARXZ belongs to Renesas' automotive display power and timing portfolio, designed specifically to simplify TFT-LCD reference voltage architecture while meeting stringent AEC-Q100 Grade 2 and long-life reliability requirements.
FAQ
What is the primary function of the ISL76534ARXZ in a TFT-LCD system?
The ISL76534ARXZ serves as a complete reference voltage generator for TFT-LCD panels, providing 14 programmable gamma reference voltages (OUT1–OUT14) and one high-current VCOM bias voltage (OUTCOM). It replaces discrete gamma buffers and VCOM drivers, integrating EEPROM-based calibration storage and I²C programmability - all in a single AEC-Q100 qualified device.
Does the ISL76534ARXZ require external components for stable operation?
Yes. The ISL76534ARXZ requires external decoupling: a 0.1 µF ceramic capacitor at each AVDD, AVDD_AMP, and DVDD pin (placed as close as possible), plus a 4.7 µF bulk capacitor on AVDD/AVDD_AMP. REFIN also needs a 0.1 µF bypass. SCL and SDA require external pull-up resistors (2.2 kΩ to 4.7 kΩ) to DVDD.
How does the EEPROM in the ISL76534ARXZ support automotive display calibration?
The ISL76534ARXZ's EEPROM stores gamma and VCOM calibration data with 20-year data retention at 105°C and 10,000 write cycles. This allows factory programming and field updates via I²C, ensuring display performance remains consistent over the vehicle's lifetime without requiring recalibration hardware or service tools.
Can the ISL76534ARXZ operate with different analog and digital supply voltages?
Yes. The ISL76534ARXZ supports independent supply domains: AVDD (6.3–19 V) for gamma DACs, AVDD_AMP (4.5 V to AVDD) for the VCOM amplifier, and DVDD (2.25–3.6 V) for digital logic. This separation allows optimization of noise isolation and thermal management - for example, powering AVDD_AMP at a lower voltage than AVDD to reduce VCOM amplifier power dissipation.
What is the significance of the WP (Write Protect) pin on the ISL76534ARXZ?
The WP pin is an active-low digital input that disables I²C writes to both DAC registers and EEPROM when left floating (default state, pulled down internally). Pulling WP high enables programming - preventing accidental overwrites during normal operation while allowing controlled calibration updates during manufacturing or service.
ISL76534ARXZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 28-XFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- Buffer
- Output Type:
- -
- Number of Circuits:
- 1
- -3db Bandwidth:
- 5 MHz
- Slew Rate:
- 10V/µs
- Current - Supply:
- 1.3 mA
- Current - Output / Channel:
- 530 mA
- Voltage - Supply, Single/Dual (±):
- 6.3V ~ 19V
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 28-QFN (4x5)
ISL76534ARXZ FAQ
1.How can I place an order for ISL76534ARXZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL76534ARXZ 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 ISL76534ARXZ reliable?
The price and inventory of ISL76534ARXZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL76534ARXZ is usually 5 days.
3.What payment methods are accepted for ISL76534ARXZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL76534ARXZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL76534ARXZ?
ISL76534ARXZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL76534ARXZ 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 ISL76534ARXZ?
For technical support, including ISL76534ARXZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL76534ARXZ requirements.
6.How does Aetrix verify that ISL76534ARXZ is sourced from the original manufacturer or authorized distributors?
All ISL76534ARXZ 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 ISL76534ARXZ meets industry standards.
7.What is the process for return or replacement of ISL76534ARXZ?
All ISL76534ARXZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL76534ARXZ, 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 ISL76534ARXZ part is unused and in its original packaging.
Return procedure for ISL76534ARXZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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