具有兩個高壓擺率 VCOM 的 18 通道伽馬電壓發生器
| Display type | LCD unipolar |
| IC integration | Gamma buffer, VCOM |
| Vin (Min) (V) | 6.5 |
| Vin (Max) (V) | 20 |
| Source driver voltage (Min) (V) | 6.5 |
| Source driver voltage (Max) (V) | 20 |
| Level shifter/scan driver (ch) | 0 |
| Features | Gamma buffer, I2C interface, VCOM or op amp |
| Rating | Catalog |
- 10-BIT RESOLUTION
- 18-CHANNEL P-GAMMA:
- 300-mV Min Swing-to-Rail (10 mA)
- TWO-CHANNEL P-VCOM:
- 400-mA Typical IOUT
- HIGH SLEW RATE VCOM: 45 V/μs
- RAIL-TO-RAIL OUTPUT
- LOW SUPPLY CURRENT
- SUPPLY VOLTAGE: 6.5 V to 20 V
- DIGITAL SUPPLY: 2.0 V to 5.5 V
- TWO-WIRE INTERFACE: Supports 400 kHz and 3.4 MHz
The BUF18830 offers 18 programmable gamma channels and two programmable VCOM channels.
All gamma and VCOM channels offer a rail-to-rail output that typically swings to within 300 mV of either supply rail with a 10-mA load. All channels are programmed using a two-wire interface that supports standard operations up to 400 kHz and high-speed data transfers up to 3.4 MHz.
The BUF18830 is manufactured using Texas Instruments’ proprietary, state-of-the-art, high-voltage CMOS process. This process offers very dense logic and high supply voltage operation of up to 20 V. The BUF18830 is offered in a QFN-38 package and is specified from –40°C to +85°C.
