The BU1425AK / BU1425AKV are ICs which convert digital RGB / YUV input to composite (NTSC / PAL / PAL60), luminance (Y), and chrominance (C) signals, and outputs the results.

Features

1) Input clocks supported

27.0 / 13.5MHz

28.636 / 14.318MHz

28.375 / 14.1875MHz

35.4695 / 17.73475MHz

2) 24-bit RGB and 16-bit YUV input signals are supported.

3) Both master and slave systems are supported.

4) 9-bit high-speed DAC is used for DAC output of composite VIDEO, Y, and C signals.

5) Internal 8-color OSD output function is provided.

6) FSC-TRAP on the Y channel can be turned on and off.

7) C channel is equipped with an internal chrominance band-pass filter in addition to the U.V. lowpass filter.

8) 5V single power supply, low power consumption (0.4W typ.)

9) Y and C output can be turned off (the power consumption with Y and C off is 0.25W typ.).

10) In the Master mode, applying 3.3V to the I / O VDD and 5.0V to other VDDs produces HSY and VSY output with an amplitude of 3.3V. This enables direct connection to LSIs that use a power supply voltage of 3.3V. (The clock output for the OSD has a fixed amplitude of 5.0V.)

11) In the Slave mode, applying voltage to the I / O VDD only, and applying 0V to other VDDs, enables a current consumption of 0 even when RGB DATA, HSY, VSY, and OSD DATA are in the active state.

Applications

Video interfaces for VIDEO-CDs and CD-G decoders

BU1425AK属于集成电路（IC） > 编码器，解码器，转换器。罗姆半导体集团制造生产的BU1425AK编码器，解码器，转换器该系列产品可用于将信息封装或编码为适合于传输或存储的格式，和/或在通信路径的另一端执行逆运算，通常是通过使用某些形式的调制过程。示例包括从数字数据生成模拟视频信号的器件（反之亦然）；基于传输目的对按钮的状态进行编码的器件（实现远程控制功能）；以及便于将标准 UART 连接到标准红外收发器的器件。