EL2090CN中文资料100MHz DC-restored video amplifier数据手册Renesas规格书

描述 Description

General Description
The EL2090C is the first complete DC-restored monolithic video amplifier sub-system. It contains a very high-quality video amplifier and a nulling sample-and-hold amplifier specifically designed to stabilize video performance. When the HOLD logic input is set to a logic 0 during a horizontal sync, the sample and-hold amplifier may be used as a general-purpose op-amp to null the DC offset of the video amplifier. When the HOLD in put goes to a logic 1 the sample-and-hold stores the correction voltage on the hold capacitor to maintain DC correction during the subsequent scan line.
The video amplifier is optimized for video characteristics, and performance at NTSC is nearly perfect. It is a current-feedback amplifier, so that b3 dB bandwidth changes little at various closed-loop gains. The amplifier easily drives video signal levels into 75X loads. With 100 MHz bandwidth, the EL2090 is also useful in HDTV applications.

特性 Features

• Complete video level restoration system
• 0.01% differential gain and 0.02§ differential phase accuracy at NTSC
• 100 MHz bandwidth
• 0.1 dB flatness to 20 MHz
• Sample-and-hold has 15 nA typical leakage and 1.5 pC charge injection
• System can acquire DC correction level in 10 ms, or 5 scan lines of 2 ms each, to (/2 IRE
• VS e g5V to g15V
• TTL/CMOS hold signalApplications
• Input amplifier in video equipment
• Restoration amplifier in video mixers