Features
- 14-channel gamma references, 10-bit resolution with buffered 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 °C
- 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 4mm x 5mm super thin X2QFN package
- Pb-free (RoHS compliant)
- AEC-Q100 qualified
Description
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 VCOM calibrator, a high output current VCOM 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 VCOM 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 4mm x 5mm X2QFN thermally enhanced package. The device is specified for operation across the ambient temperature range of -40 °C to +105 °C.
Parameters
| Attributes | Value |
|---|---|
| Channels (#) | 15 |
| Rail-to-Rail | Out |
| Supply Voltage Vs Range | 6.3-19 |
| IS (mA) | 1 |
| Bus Interface Speed (MHz) | 0.4 |
| Interface | I2C |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| X2QFN | 4.0 x 5.0 x 0.38 | 28 | 0.5 |
| Part Number | Status | Samples | Stock | RoHS | Package | Budgetary Price (USD) | Lead Count (#) | Carrier Type | Moisture Sensitivity Level (MSL) | Pb (Lead) Free | Pb Free Category | Temp. Range (°C) | Country of Assembly | Country of Wafer Fabrication |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ISL76534ARXZ | Active | Available | Out of Stock | RoHS:EN | X2QFN | 1ku | $2.19 | 28# | Tray | 1 | Yes | Nickel/Palladium/Gold-Silver - e4 | -40 to +105°C | MALAYSIA | CHINA |
| ISL76534ARXZ-T13 | Active | Available | Out of Stock | RoHS:EN | X2QFN | 1ku | $2.19 | 28# | Reel | 1 | Yes | Nickel/Palladium/Gold-Silver - e4 | -40 to +105°C | MALAYSIA | CHINA |
| ISL76534ARXZ-T7A | Active | Available | Out of Stock | RoHS:EN | X2QFN | 1ku | $2.54 | 28# | Reel | 1 | Yes | Nickel/Palladium/Gold-Silver - e4 | -40 to +105°C | MALAYSIA | CHINA |
Filters
Applied Filters
- Product AdvisoryPDF 232 KB Mar 06, 2026
- Application NotePDF 564 KB an1993 May 22, 2018AI-generated Summary: Voltage feedback (VFB) amplifiers use a differential input pair, a high-impedance stage, and an output buffer to convert input voltage differences into output voltage. The VFB amplifier's gain decreases at a dominant pole frequency due to compensation capacitors. Current feedback (CFB) amplifiers include a class AB input amplifier, current mirror, high-impedance stage, and output buffer. CFB amplifiers provide faster switching and higher slew rates by drawing charge/discharge currents directly from supply rails, unlike VFB amplifiers which are limited by biasing current sources.
- White PaperPDF 549 KB matching-automotive-tft-lcd-color-brightness Mar 08, 2018Originally developed for CRT displays, gamma correction ensures consistent brightness and color reproduction by compensating for display and human visual response non-linearities. This paper explores gamma calibration for automotive TFT-LCD panels, detailing how to adjust gamma response using a 14-channel programmable buffer. Three example settings—high, nominal, and low gamma—illustrate performance tradeoffs and the importance of compensating for legacy camera gamma curves designed for CRT systems.
- Application NotePDF 357 KB an1694 Jan 19, 2004AI-generated Summary: The document outlines the four fundamental internal blocks of an operational amplifier and presents a simple 2:1 stage circuit diagram. It includes important legal notices from Renesas Electronics regarding the use, liability, and intellectual property rights of their semiconductor products. The document clarifies product quality grades, intended applications, and restrictions on use in life-critical or hazardous systems. It emphasizes compliance with applicable laws and safety responsibilities when using Renesas products. Contact information for Renesas sales offices worldwide is also provided.
Recommended Documents (1)
Datasheets (1)
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- Application NotePDF 564 KB an1993 May 22, 2018AI-generated Summary: Voltage feedback (VFB) amplifiers use a differential input pair, a high-impedance stage, and an output buffer to convert input voltage differences into output voltage. The VFB amplifier's gain decreases at a dominant pole frequency due to compensation capacitors. Current feedback (CFB) amplifiers include a class AB input amplifier, current mirror, high-impedance stage, and output buffer. CFB amplifiers provide faster switching and higher slew rates by drawing charge/discharge currents directly from supply rails, unlike VFB amplifiers which are limited by biasing current sources.
- White PaperPDF 549 KB matching-automotive-tft-lcd-color-brightness Mar 08, 2018Originally developed for CRT displays, gamma correction ensures consistent brightness and color reproduction by compensating for display and human visual response non-linearities. This paper explores gamma calibration for automotive TFT-LCD panels, detailing how to adjust gamma response using a 14-channel programmable buffer. Three example settings—high, nominal, and low gamma—illustrate performance tradeoffs and the importance of compensating for legacy camera gamma curves designed for CRT systems.
- Application NotePDF 357 KB an1694 Jan 19, 2004AI-generated Summary: The document outlines the four fundamental internal blocks of an operational amplifier and presents a simple 2:1 stage circuit diagram. It includes important legal notices from Renesas Electronics regarding the use, liability, and intellectual property rights of their semiconductor products. The document clarifies product quality grades, intended applications, and restrictions on use in life-critical or hazardous systems. It emphasizes compliance with applicable laws and safety responsibilities when using Renesas products. Contact information for Renesas sales offices worldwide is also provided.
Application Notes & White Papers (3)
- Product AdvisoryPDF 232 KB Mar 06, 2026
Product Notices (PCN, EOL, etc) (2)
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Renesas Boards & Kits
14-Channel Programmable Gamma Buffer Evaluation Board
The ISL76534EVAL1Z evaluation board is a complete platform used to evaluate the specifications and functionalities of the ISL76534 programmable gamma buffer. The ISL76534 contains an I2C programmable, 10-bit, 14-channel gamma reference voltage generator with buffered outputs, a 10-bit... Read More