Wideband, High-Output-Current – Single Ended-to-Differential Line Drivers with Enable
This is a Line Driver project. This single-ended-to-differential line driver is designed for high-speed communications. Using current feedback for greater bandwidth, this project delivers full-power bandwidth up to 405MHz and features slew rates as high as 6500V/µs. The MAX4447 has a fixed gain of +2V/V and a small-signal bandwidth of 430MHz. A low-power enable mode reduces current consumption below 5.5mA and places the outputs in a high-impedance state, Jumper J1 is provided to selectively enable and disable. The circuit can deliver differential output swings of ±6.2V from ±5V supplies with a 50Ω load. Excellent differential gain/phase and noise specifications make these project ideal for a wide variety of video and RF signal-processing and transmission applications. It is advisable to use gold-plated PCB and high-quality connectors for high-frequency operation.
Key Features
Operating Power Supply +/-5V DC (Dual 5V DC)
6500V/µs Slew Rate
Small-Signal Bandwidth
Full-Power Bandwidth 430MHz
200MHz 0.1dB Gain Flatness
130mA Output Drive Current
+2V/V Internally Fixed Gain
-78dB SFDR at 100kHz
Low Differential Gain/Phase: 0.01%/0.02°
Ultra-Low Noise: 23nV per root-Hz at fIN = 1MHz
8ns Settling Time to 0.1%
PCB Dimensions 35.72 x 29.37 mm
4 x 3MM Mounting Holes
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This is a Line Driver project. This single-ended-to-differential line driver is designed for high-speed communications. Using current feedback for greater bandwidth, this project delivers full-power bandwidth up to 405MHz and features slew rates as high as 6500V/µs. The MAX4447 has a fixed gain of +2V/V and a small-signal bandwidth of 430MHz. A low-power enable mode reduces current consumption below 5.5mA and places the outputs in a high-impedance state, Jumper J1 is provided to selectively enable and disable. The circuit can deliver differential output swings of ±6.2V from ±5V supplies with a 50Ω load. Excellent differential gain/phase and noise specifications make these project ideal for a wide variety of video and RF signal-processing and transmission applications. It is advisable to use gold-plated PCB and high-quality connectors for high-frequency operation.
Key Features
Operating Power Supply +/-5V DC (Dual 5V DC)
6500V/µs Slew Rate
Small-Signal Bandwidth
Full-Power Bandwidth 430MHz
200MHz 0.1dB Gain Flatness
130mA Output Drive Current
+2V/V Internally Fixed Gain
-78dB SFDR at 100kHz
Low Differential Gain/Phase: 0.01%/0.02°
Ultra-Low Noise: 23nV per root-Hz at fIN = 1MHz
8ns Settling Time to 0.1%
PCB Dimensions 35.72 x 29.37 mm
4 x 3MM Mounting Holes
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