The EL9200, EL9201, and EL9202 are programmable VCOM amplifiers for use in TFT-LCD displays. Featuring 1, 2, and 4 channels of VCOM amplification, respectively, each device features just a single programmable current source for adding offset to one VCOM output. This current source is programmable using a single wire interface to one of 128 levels. The value is stored on an internal EEPROM memory. The EL9200 is available in the 12-pin DFN package and the EL9201 and EL9202 are available in 24-pin QFN packages. All are specified for operation over the -40°C to +85°C temperature range.
The EL9200 series consists of programmable Vcom amplifiers for TFT‑LCD displays. The EL9200 provides a single channel, the EL9201 two channels, and the EL9202 four channels of Vcom amplification. Each device contains a single programmable current source with 128 adjustable levels stored in an internal EEPROM and is controlled via a single‑wire interface.
The devices operate from –40 °C to +85 °C, are supplied in 12‑pin DFN (EL9200) or 24‑pin QFN (EL9201/EL9202) packages, and support 2.6 V–3.6 V logic control. Key features include 128‑step sink current adjustment, up to 18 V supply voltage, 80 V/µs slew rate, and 60 mA continuous output current.
| Supply Voltage (Vs+) | up to 18 V |
|---|---|
| Continuous Output Current | 65 mA |
| Operating Temperature Range | -40 °C to +85 °C |
| Logic Supply Voltage (Vsp) | 2.6 V to 3.6 V |
| Slew Rate | 80 V/µs |
The offset current is programmed via a single‑wire interface that selects one of 128 levels stored in an internal EEPROM.
The EL9200 is offered in a 12‑pin DFN package, while the EL9201 and EL9202 are supplied in 24‑pin QFN packages.