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Intersil公司的ISL76534是集成了EEPROM的超低功耗14路可編伽瑪(Gamma)緩沖器,用于汽車娛樂和ADAS顯示器.器件包括I2C可編程的10位14路Gamma基準電壓發(fā)生器,10位可編程VCOM校準器,高輸出電流VCOM放大器和存儲所有基準電壓數(shù)據(jù)的EEPROM.模擬工作電壓6.3V-19V,數(shù)字工作電壓2.25V-3.6V,主要用在汽車娛樂系統(tǒng)顯示器,汽車中心娛樂系統(tǒng)顯示器(CID),汽車智能鏡,汽車儀表盤顯示器和汽車TFT-LCD顯示器.本文介紹了ISL76534主要特性,框圖和TFT-LCD GAMMA基準電壓發(fā)生器電路圖,以及評估板ISL76534EVAL1Z指標和主要特性,框圖,電路圖,材料清單和PCBV設計圖.
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應用:
? Automotive infotainment display
? Automotive Center Information Display (CID)
? Automotive smart mirrors
? Automotive instrument cluster display
? Automotive TFT-LCD display
圖1.ISL76534框圖
圖2.ISL76534典型應用:TFT-LCD GAMMA基準電壓發(fā)生器
圖3.ISL76534典型應用:TFT-LCD GAMMA和VCOM基準發(fā)生器
圖4.ISL76534典型應用：TFT-LCD GAMMA基準發(fā)生器：VCOM放大器不能
評估板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.
評估板ISL76534EVAL1Z指標：
? 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
評估板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
圖5.評估板ISL76534EVAL1Z外形圖
圖6.評估板ISL76534EVAL1Z框圖
圖7.評估板ISL76534EVAL1Z電路圖(1)
圖8.評估板ISL76534EVAL1Z電路圖(2)
評估板ISL76534EVAL1Z材料清單:
圖9.評估板ISL76534EVAL1Z PCB設計圖(1):頂層絲印
圖10.評估板ISL76534EVAL1Z PCB設計圖(2):頂層元件
圖11.評估板ISL76534EVAL1Z PCB設計圖(3):內(nèi)層2
圖12.評估板ISL76534EVAL1Z PCB設計圖(4):內(nèi)層3
圖13.評估板ISL76534EVAL1Z PCB設計圖(5):底層焊接
圖14.評估板ISL76534EVAL1Z PCB設計圖(6):底層絲印
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