Video amp targets DVD, STBs with HD broadcast tuner

New Japan Radio Co. Ltd has released the NJM2566A, a 6-ch video amplifier compatible with high-definition signals. The company said the new device is suitable for the analog video output of DVD recorders and digital STBs that incorporate a high-definition broadcast tuner, which are increasing in availability due to the expansion of the terrestrial digital broadcast area.

The device is compatible with conventional DVD recorders employing a terrestrial digital broadcast tuner as well as BS digital and 110° CS digital. The analog video outputs of these DVD recorders are equipped with a composite video output; S-Video output (brightness, color); component video output (Y: brightness, Pb: blue color-difference signal, Pr: red color-difference signal, D4-class terminal); and, require a total of six video amps for configuration.

Three of the circuits for component video output need to be compatible with D4-class high-definition signals, and the NJM2566A incorporates three channels for high-definition component video output capability, wideband 6dB video amp, 75-ohm driver and LPF (low pass filter/cutoff frequency 13.5MHz/30MHz switching) for D/A converter noise elimination.

Moreover, the NJM2566A employs a 3-channel 6dB video amp, 75-ohm driver and LPF (6.75MHz cutoff frequency), plus a Y/C mix circuit and power-saving circuit for blocking the analog video output of DVD recorders and STBs compatible with terrestrial digital broadcast. All of these required functions are contained on a single chip.

Packaged in an 11-by-7.6-by-1.25mm SSOP32, the product is already available and priced at $1.72 per unit.