Low-Power, Low-Cost LCD Gamma Generator with EEPROM
| Status |
| Active: In Production. |
| Description |
The DS3508 is a programmable 8-channel gamma voltage generator with one byte of on-chip EEPROM and one byte of SRAM memory per channel. Each channel is composed of an independent 8-bit DAC with an associated EEPROM/SRAM pair. At power-up, nonvolatile (NV) EEPROM gamma data is loaded into its corresponding SRAM register that drives the associated 8-bit DAC. An on-chip control register allows selectable control of writing to SRAM/EEPROM or SRAM only.
The DS3508 is designed for low-power operation and draws less than 2mA (typ) from the VDD supply. Programming occurs through an I²C-compatible serial interface with support for speeds up to 400kHz. |
| Key Features |
|
Applications/Uses |
- 8-Bit Gamma DACs, 8 Channels
- 1 Byte EEPROM and 1 Byte SRAM per Channel
- Ultra-Low Power (2mA IDD, typ)
- 400kbps I²C Interface
- 9.0V to 15.5V Analog Supply
- 2.7V to 5.5V Digital Supply
- 20-Pin TSSOP Package
- Address Pin Allows Two DS3508s to Reside on the Same I²C Bus
|
|
- Industrial Controls
- TFT-LCD Gamma Buffer
|
| Key Specifications: Programmable Gamma Buffers |
| Part Number |
Total Channels |
Programmable Channels |
Resolution
(bits) |
Integrated Nonvolatile Memory |
VCOM Calibrator |
VCOM Buffer |
Interface |
VSUPPLY
(V) |
IQ
(mA) |
Oper. Temp.
(°C) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Price |
| max w/pins |
See Notes |
| DS3508 |
8 |
8 |
8 |
Yes |
No |
No |
I2C |
9 to 15.5 |
4 |
-45 to +95 |
|
45.2 |
$0.90 @1k |
| See All Programmable Gamma Buffers (13) |
| Diagram |
Typical Operating Circuit |
source：ShenZhen henlito electronic co.,ltd.
web:www.henlito.com
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