LT6558 TYPICAL PERFORMANCE CHARACTERISTICSInput Noise Spectral DensityEnable/Disable Response 6 1000 1000 VS = 5V VEN(DISABLE) VIN = 2.5V INPUT CURRENT NOISE (pA/ 5 √Hz) VS = 5V +i 4 V n OUT = 2VP-P 100 100 RL = 150Ω 3 e V n OUT 2 VOLTAGE (V) 10 10 1 √Hz) INPUT VOLTAGE NOISE (nV/ 0 VEN(ENABLE) 1 0 –1 0.01 0.1 1 10 100 0 0.4 0.8 1.2 1.6 2.0 2.4 2.6 FREQUENCY (kHz) TIME (µs) 6558 G27 6558 G28 Large-Signal Transient ResponseSmall-Signal Transient Response 5 2.65 VS = 5V VS = 5V VIN = 2VP-P VIN = 100mVP-P R R 4 L = 150Ω L = 150Ω 2.60 3 2.55 OUTPUT (V) 2 OUTPUT (V) 2.50 1 0 2.45 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 8 10 12 14 16 18 20 TIME (ns) TIME (ns) 6558 G29 6558 G30 PIN FUNCTIONS ⎯ E ⎯ N (Pin 1): Enable Control Pin. The part is enabled when IN G (Pin 5): Green Channel Input. This pin has a nomi- this pin is pulled low. An internal pull-up resistor of 40k nal impedance of 450kΩ with input bias circuit inactive, will turn the part off if this pin is unconnected. Pin 16 open. GND (Pin 2): Ground Reference for Enable Pin (Pin 1) GND G (Pin 6): Ground of Green Channel Amplifi er. This and Bias Control Voltage Pin (Pin 16). This pin must be pin is not internally connected to other ground pins and connected externally to ground. must be connected externally to ground. IN R (Pin 3): Red Channel Input. This pin has a nominal IN B (Pin 7): Blue Channel Input. This pin has a nominal impedance of 450kΩ with input bias circuit inactive, impedance of 450kΩ with input bias circuit inactive, Pin 16 open. Pin 16 open. GND R (Pin 4): Ground of Red Channel Amplifi er. This pin GND B (Pin 8): Ground of Blue Channel Amplifi er. This is not internally connected to other ground pins and must pin is not internally connected to other ground pins and be connected externally to ground. must be connected externally to ground. 6558f 7