MAXIM MAX498/MAX499 Manual
Update: 30 September, 2023
MAX498/MAX499 are high-speed, quad/triple, single-pole/double-throw video switches with on-board closed-loop buffer amplifiers. The buffer amplifiers feature +6dB gain (AVCL = 2V/V), 250MHz -3dB bandwidth, 70MHz 0.1dB gain flatness, and 1250V/µs slew rate. Fast switching time (3ns) and fast settling time (12ns for a 4V step) make these devices excellent choices for a wide variety of video applications. The low differential gain/phase errors (0.03%/0.06°) and wide bandwidth make them ideal for both composite-video and RGB applications. The amplifiers are capable of delivering ±2.5V into back-terminated 50Ω or 75Ω cables, and they deliver ±2V to a 75Ω load, allowing multiple cables to be driven from a single output. For implementation of large switch arrays, a low-power disable mode places the amplifier outputs in a high- impedance state. Channel selection and output enable/disable are controlled by four TTL/CMOS- compatible logic inputs. Each video input is isolated by an AC-ground pin, which minimizes channel-to-channel capacitance and reduces crosstalk to 90dB at 10MHz. The four-channel MAX498 dissipates 390mW (typical) from ±5VDC power supplies with all output buffers enabled. Power consumption is reduced to 130mW with all buffers disabled. The corresponding dissipation for the three-channel MAX499 is 300mW enabled and 100mW disabled.
Brand: MAXIM
File format: PDF
Size: 169 KB
MD5 Checksum: 33BFE86277AD819B963FA54B8940197D
Publication date: 05 April, 2012
Downloads: -
PDF Link: MAXIM MAX498/MAX499 Manual PDF