ISL76534 Datasheet, PDF (1/24 Pages) Intersil Corporation – 14-channel gamma references

DATASHEET
Ultra-Low Power 14-Channel Programmable Gamma
Buffer with Integrated EEPROM
ISL76534
The ISL76534 is a programmable gamma buffer for TFT-LCDs
featuring ultra-low power operation. The ISL76534 contains an
I²C programmable, 10-bit, 14-channel gamma reference
voltage generator with buffered outputs, a 10-bit
programmable V_COM calibrator, a high output current V_COM
amplifier, and internal EEPROM to store all reference voltage
data. The EEPROM features an endurance of 10,000 write
cycles and a data retention of 20 years at 105°C.
Combining gamma and V_COM reference voltage generators
with low power operation and EEPROM, the ISL76534 provides
a complete reference voltage solution ideal for TFT-LCD
displays.
The ISL76534 is available in a super thin (height = 0.4mm
maximum) 28 Ld 4mmx5mm X2QFN thermally enhanced
package. The device is specified for operation across the
ambient temperature -40°C to +105°C.
Applications
• Automotive infotainment display
• Automotive Center Information Display (CID)
• Automotive smart mirrors
• Automotive instrument cluster display
• Automotive TFT-LCD display
Features
• 14-channel gamma references, 10-bit resolution with
buffered outputs
• 1-channel V_COM calibrator with 10-bit resolution
• High output current V_COM amplifier
• Ultra-low power operation, ideal for automotive displays:
Typical quiescent power, 12mW at 8V AV_DD
• EEPROM data retention: 20 years at 105°C
• EEPROM endurance: 10,000 write cycles
- Read/write capable over 2.25V to 3.6V D_VDD 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
TIM ING
CONTROL
(TC O N )
IS L 7 6 5 3 4
GAMMA BUFFER (COLUMN
DRIVER D AC REFERENCE
VOLTAGES), AND VCOM
REFERENCES
VCOM
C A L IB R A T O R
VCOM
D R IV E R
GAMMA
GATE
D R IV E R S
COLUM N DRIVERS
TFT-LCD PANEL
TFT-LCD SCREEN
DATA
L IN E
SELECT
L IN E
TFT
STORAGE
C A P A C IT O R
LC PIXEL
COMMON
(V COM )
FIGURE 1. TYPICAL APPLICATION: TFT-LCD GAMMA REFERENCE VOLTAGE GENERATOR
July 27, 2016
1
FN8866.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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