| Status |
| Active: In Production. |
| Description |
The MAX5679 digitally programmable LCD gamma reference generator provides 18 buffered channels for biasing LCD column drivers. The device provides 14 outputs of 8-bit programmable gamma reference voltage derived from four externally applied reference voltages, and four buffered outputs of the same externally applied reference voltages. An I²C serial interface programs the 14 upper and lower range gamma buffer outputs independently.
The MAX5679 features a digitally programmable voltage reference (DVR) with 7-bit adjustable current sink to set the LCD common backplane (VCOM) voltage. The MAX5679 includes a power-on reset (POR) function that configures all 14 programmable gamma outputs to predetermined levels upon initial power-up.
The MAX5679 is available in a 5mm x 5mm, 32-pin TQFN package and is specified over the -40°C to +85°C extended temperature range. |
| Key Features |
|
Applications/Uses |
- 7-Bit Adjustable VCOM Calibrator (DVR)
- 14 Programmable Gamma Outputs for LCD
- Column Driver ICs
- 8-Bit DAC Resolution for Upper and Lower Range Outputs
- Maximum Output Swing of (AVDD - 0.2V) (OUT1–OUT7)
- Minimum Output Swing of (GND + 0.2V) (OUT8–OUT14)
- Four Independent Reference Inputs
- Four Independent Buffered Reference Outputs
- 9V to 20V Analog Supply
- 2V to 5.5V Digital Supply
- 400kHz I²C-Compatible Serial Interface
- Pin-Selectable I²C Address Bit Allows Two Slave IDs
- Backward Compatible with the MAX5678
|
|
- TFT-LCD Panels for Desktop Monitors
- TFT-LCD Panels for Flat Screen TVs
|
| Key Specifications: Programmable Gamma Buffers |
| Part Number |
Total Channels |
Programmable Channels |
Resolution
(bits) |
Integrated Nonvolatile Memory |
Memory Banks |
VCOM Calibrator |
VCOM Buffer |
Interface |
VSUPPLY
(V) |
IQ
(mA) |
Oper. Temp.
(°C) |
Package/Pins |
|
| MAX5679 |
18 |
14 |
8 |
No |
1 |
Yes |
No |
I2C |
9 to 16.5 |
12.5 |
-40 to +85 |
|
| See All Programmable Gamma Buffers (13) |
source：ShenZhen henlito electronic co.,ltd.
web:www.henlito.com
