7700ADA-AUD
Dual Analog Audio Distribution Amplifier
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.
Features
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Block Diagram 
Specifications
| Analog Audio Input | |
|---|---|
| Standard | Any analog audio signal |
| Number of Inputs | 2 (Balanced or Single ended) |
| Connector | 3 pin removable terminal strips |
| Step Gain | 0dB or +6.5dB (configurable with jumpers) |
| Fine Gain Control | -6.5dB to +9.5dB (card edge pot adjustable) |
| Maximum Input Level | |
| 0dB gain | +34dBu |
| +6.5dB gain | +28dBu |
| Noise Floor | |
| 0dB gain | -87dBu |
| +6.5dB gain | -91dBu (jumper setup) |
| Common Mode Rejection | > 115dB @ 60Hz, 90dB @ 20kHz (tested with +28dBu CM input) |
| Common Mode Range | |
| 0dB gain | > ±22V |
| +6.5dB gain | > ±7V |
| Impedance | |
| 0dB gain | 33kΩ |
| +6.5dB gain | 15kΩ |
| Analog Audio Output | |
|---|---|
| Number of Outputs | |
| Stereo Mode | 4 outputs each on left and right channels |
| Mono Mode | 8 outputs |
| Connector | 3 pin removable terminal strips |
| Step Gain | 0dB, 3.5dB or 9.5dB (configurable with jumpers) |
| Maximum Output Level | |
| Across Hi-Z Load | +28dBu |
| Into 600Ω Load | +24dBu |
| Impedance | 66Ω |
| Frequency Response | ±0.02dB, 20Hz to 20kHz |
| Stereo Phase Mismatch | < 1° @ 20kHz |
| SNR | |
| 0dB gain | 115dB |
| +6.5dB gain | 119dB |
| THD+ Noise | |
| Across Hi-Z Load | 0.001%, 20Hz to 20kHz @ 28dBu, unweighted RMS |
| Into 600Ω Load | 0.01% up to 24dBm |
| Intermodulation Distortion | 0.001% - SMPTE @ 18dBu |
| Stereo Crosstalk | > 115dB @ 1kHz, > 93dB @ 20kHz |
| Isolation | > 110dB @ 1kHz, 100dB @ 20kHz |
| Electrical | |
|---|---|
| Voltage | +12V DC |
| Power | 12 Watts |
| EMI/RFI | Complies with FCC Part 15 Class A, EU EMC Directive |
| Physical | |
|---|---|
| Number of Slots | 1 |
Ordering Information
| 7700ADA-AUD | Balanced Analog Audio Distribution Amplifier (Configurable 1x8 or 2-1x4) |
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| Ordering Options | |
|---|---|
| Notes | • Rear plate must be specified at time of order - eg: [model]+3RU |
| Rear Plate Suffix | |
|---|---|
| +3RU | 3RU rear plate for use with 7800FR, 7801FR, 7700FR-C or 350FR Multiframes |
| +1RU | 1RU rear plate for use with 7701FR Multiframe |
| +SA | Standalone Enclosure Rear Plate |
| Enclosures | |
|---|---|
| 350FR | Portable Multiframe which holds 7 modules |
| 7700FR-C | 3RU Multiframe which holds 15 modules |
| 7800FR | 3RU Multiframe which holds 15 modules |
| 7701FR | 1RU Multiframe which holds 3 modules |
| S7701FR | 7700 Series Standalone Enclosure |
| 7801FR | 1RU Multiframe which holds 4 modules |