1631

MS1631 is a single-channel video buffer integrating a rail-to-rail output driver with 6dB gain and a 6th-order output reconstruction filter. The typical -3dB bandwidth of the MS1631 is 72MHz with a slew rate of 400V/us. The MS1631 delivers superior image quality compared to passive LC filter solutions with external drivers. It operates from a single supply ranging from +2.5V to +5.5V with an ultra-low operating current of 14.5mA, making it ideal for battery-powered applications. The MS1631 accepts DAC output signals via either DC-coupled or AC-coupled input. Internal diode clamping and bias circuitry support AC-coupled input configurations. The MS1631 also incorporates an internal level-shifting circuit to prevent sync pulse clipping and enable DC-coupled output. The output can drive DC- or AC-coupled single (150Ω) or double (75Ω) loads. The MS1631 is housed in a SOT23-6 six-pin package with ESD protection up to 8KV. The MS1631 operates from a single supply of +2.5V to +5V. In applications, the MS1631 serves as a complete filter and buffer for decoding and encoding HD video signals. Compared to conventional discrete component designs, the MS1631 solution reduces PCB board area, lowers cost, and improves video signal performance. The MS1631 integrates a DC-coupled input buffer, a video encoder for eliminating out-of-band noise, and an op-amp driver with +6dB gain capable of driving 75Ω loads. The AC- or DC-coupled input buffer eliminates sync compression, bowing, and field tilt. The MS1631 output can also be either DC-coupled or AC-coupled.

Applications

• Video amplifiers
• Cable and satellite set-top boxes
• Communications equipment
• Consumer video
• Portable and handheld products
• Personal video recorders
• DVD players
• HDTVs
• Projectors and slide projectors

Key features

• Single-channel 6th-order 72MHz (HD) filter
• Transparent input clamp
• 6dB gain output driver with dual video load drive capability
• Rail-to-rail output
• Input voltage range includes ground
• AC or DC coupled input
• AC or DC coupled output
• Single-supply range: 2.5V to 5.5V
• Low power consumption, operating current 14.5mA
• SOT23-6 package