The 7700ADA-AUD Dual Analog Audio distribution amplifier is a general purpose amplifier for distributing analog audio signals. It can be operated as two independent 4 output amplifiers for stereo signals, or as a single amplifier with 8 outputs where higher fanout is required. The 7700ADA-AUD can be operated with either differential or single ended inputs and offers a wide range of gain adjustment to handle a wide variety of input signals.
Differential and single ended input (automatic single ended to differential conversion)
Configurable for stereo (2-1x4) or mono (1x8)
High impedance inputs
Low impedance outputs
Wide gain adjustment range
High common mode range and common mode rejection ratio (CMRR)
Very high SNR
Very low THD+N
Module status / Local Fault
Spec Sheet available - Yes
Analog Audio Input - Standard:
Any analog audio signal
Analog Audio - Number of Inputs:
2 (Balanced or Single ended)
Analog Audio Input - Connector:
3 pin removable terminal strips
Analog Audio Input - Step Gain:
0dB or +6.5dB (configurable with jumpers)
Analog Audio Input - Fine Gain Control:
-6.5dB to +9.5dB (card edge pot adjustable)
Maximum Input Level (0dB gain):
+34dBu
Maximum Input Level (+6.5dB gain):
+28dBu
Noise Floor (0dB gain):
-87dBu
Noise Floor (+6.5dB gain):
-91dBu (jumper setup)
Common Mode Rejection:
> 115dB @ 60Hz, 90dB @ 20kHz (tested with +28dBu CM input)
Common Mode Range (0dB gain):
> ±22V
Common Mode Range (+6.5dB gain):
> ±7V
Analog Audio Input - Impedance (0dB gain):
33k Ohms
Analog Audio Input - Impedance (+6.5dB gain):
15k Ohms
Analog Audio - Number of Outputs (Stereo Mode):
4 outputs each on left and right channels
Analog Audio - Number of Outputs (Mono Mode):
8 outputs
Analog Audio output - Connector:
3 pin removable terminal strips
Analog Audio Output - Step Gain:
0dB, 3.5dB or 9.5dB (configurable with jumpers)
Maximum Output Level (Across Hi-Z Load):
+28dBu
Maximum Output Level (Into 600 Ohms Load):
+24dBu
Analog Audio Output - Impedance:
66 Ohms
Analog Audio Output - Frequency response:
±0.02dB, 20Hz to 20kHz
