集成EEPROM超低功耗可编伽玛缓冲器的ISL76534

Intersil公司的ISL76534是集成了EEPROM的超低功耗14路可编伽玛(Gamma)缓冲器,用于汽车娱乐和ADAS显示器.器件包括I2C可编程的10位14路Gamma基准电压发生器,10位可编程VCOM校准器,高输出电流VCOM放大器和存储所有基准电压数据的EEPROM.模拟工作电压6.3V-19V,数字工作电压2.25V-3.6V,主要用在汽车娱乐系统显示器,汽车中心娱乐系统显示器(CID),汽车智能镜,汽车仪表盘显示器和汽车TFT-LCD显示器.本文介绍了ISL76534主要特性,框图和TFT-LCD GAMMA基准电压发生器电路图,以及评估板ISL76534EVAL1Z指标和主要特性,框图,电路图,材料清单和PCBV设计图.

14-Channel Programmable Gamma Buffer for Infotainment and ADAS Displays Ultra-Low Power 14-Channel Programmable Gamma Buffer with Integrated EEPROM The ISL76534 is a programmable gamma buffer for TFT-LCDsfeaturing ultra-low power operation. The ISL76534 contains anI2C programmable,10-bit, 14-channel gamma referencevoltage generator with buffered outputs,a 10-bitprogrammable VCOM calibrator, a high output current VCOMamplifier,and internal EEPROM to store all reference voltagedata.The EEPROM features an endurance of 10,000 writecycles and a data retention of 20 years at 105℃.

Combining gamma and VCOM reference voltage generatorswith low power operation and EEPROM, the ISL76534 providesa complete reference voltage solution ideal for TFT-LCDdisplays.

The ISL76534 is available in a super thin (height = 0.4mmmaximum) 28 Ld 4mmx5mm X2QFN thermally enhancedpackage. The device is specified for operation across theambient temperature -40℃ to +105℃.

ISL76534主要特性:

• 14-channel gamma references, 10-bit resolution withbuffered outputs

• 1-channel VCOM calibrator with 10-bit resolution

• High output current VCOM amplifier

• Ultra-low power operation, ideal for automotive displays:Typical quiescent power, 12mW at 8V AVDD

• EEPROM data retention: 20 years at 105℃

• EEPROM endurance: 10,000 write cycles

- Read/write capable over 2.25V to 3.6V DVDD range

• 6.3V to 19V analog supply operating range

• 2.25V to 3.6V digital supply operating range

• Power Supply Rejection Ratio (PSRR): 75dB typical

• 28 Ld 4mmx5mm super thin X2QFN package

• Pb-free (RoHS compliant)

• AEC-Q100 qualified

ISL76534应用:

• Automotive infotainment display

• Automotive Center Information Display (CID)

• Automotive smart mirrors

• Automotive instrument cluster display

• Automotive TFT-LCD display

图1.ISL76534框图

图2.ISL76534典型应用:TFT-LCD GAMMA基准电压发生器

图3.ISL76534典型应用:TFT-LCD GAMMA和VCOM基准发生器

　　图4.ISL76534典型应用：TFT-LCD GAMMA基准发生器：VCOM放大器不能

　　评估板ISL76534EVAL1Z

　　The ISL76534EVAL1Z is a complete platform for theevaluation on all datasheet specifications and functionalitiesof the programmable gamma buffer. The ISL76534 contains anI2C programmable， 10-bit， 14-channel gamma referencevoltage generator with buffered outputs， a 10-bit programmableVCOM calibrator， a high output current VCOM amplifier and aninternal EEPROM to store all reference voltage data. TheEEPROM features an endurance of 10，000 write cycles and adata retention of 20yrs at 105℃。

　　The ISL76534EVAL1Z board is intended to provide anevaluation platform for the 4mmx5mm X2QFN ISL76534package， programmable gamma buffer.

　　评估板ISL76534EVAL1Z指标：

　　• Ambient temperature range， -40℃ to +105℃

　　• Analog supply voltage， AVDD = 6.3V to 19V

　　• Digital supply voltage， DVDD = 2.25 to 3.6V

　　• Output channels x14， OUTx = 0V to AVDD-Headroom

　　• Output channel x1， VCOM = 0V to AVDD-Headroom

　　评估板ISL76534EVAL1Z主要特性：

　　• 15-Channel reference voltage outputs， I2C programmable：

　　- 14-channel gamma references， 10-bit resolution withbuffered outputs

　　- 1-channel VCOM calibrator with 10-bit resolution

　　• High output current VCOM amplifier

　　• Ultra-low power operation， ideal for tablet and mobileapplications： typical quiescent power， 12mW at 8V AVDD

　　• EEPROM data retention： 20yrs at 105℃

　　• EEPROM endurance： 10，000 write cycles

　　- Read/write capable over 2.25V to 3.6V DVDD range

　　• 6.3V to 19V analog supply operating range

　　• 2.25V to 3.6V digital supply operating range

　　• 28 Ld 4x5mm super thin X2QFN package

　　• Pb-free （RoHS compliant）

　　• AEC-Q100 qualified

图5.评估板ISL76534EVAL1Z外形图

图6.评估板ISL76534EVAL1Z框图

图7.评估板ISL76534EVAL1Z电路图(1)

图8.评估板ISL76534EVAL1Z电路图(2)

评估板ISL76534EVAL1Z材料清单:

图9.评估板ISL76534EVAL1Z PCB设计图(1):顶层丝印

图10.评估板ISL76534EVAL1Z PCB设计图(2):顶层元件

图11.评估板ISL76534EVAL1Z PCB设计图(3):内层2

图12.评估板ISL76534EVAL1Z PCB设计图(4):内层3

图13.评估板ISL76534EVAL1Z PCB设计图(5):底层焊接

图14.评估板ISL76534EVAL1Z PCB设计图(6):底层丝印