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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 eight 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
- Differential and single ended input (automatic single ended to differential conversion)
- Configurable for stereo (2-1x4) or mono (1x8)
- High impedance input
- Low impedance outputs
- Wide gain adjustment range
- High common mode range and common mode rejection ratio (CMRR)
- Very high SNR
- Very low THD+N
Card Edge LEDs
- Module status/Local fault
Specifications
Analog Audio Input
| Standards | Any analog audio signal |
|---|---|
| Number of Inputs | 2 (Balanced or Single ended) |
| Connectors | 3-pin removable terminal strips |
| Input Step Gain | 0dB or +6.5dB (configurable with jumpers) |
| Fine Gain Control | -6.5dB to +9.5dB (card edge pot adjustable) |
| Max Input Level | |
| 0dB Input Gain | +34dBu |
| +6.5dB Input Gain | +28dBu |
| Noise Floor | -87dBu (0dB input gain), -91dBu (+6.5dB input gain jumper setup) |
| Common Mode Rejection | > 115dB @ 60Hz, 90dB @ 20kHz (tested with +28dBu CM input) |
| Common Mode Range | |
| 0dB Input Gain | > ±22V |
| +6.5dB Input Gain | > ±7V |
| Input impedance | 0dB gain 33kΩ +6.5dB gain 18kΩ |
Analog Audio Outputs
| Number of Outputs | |
|---|---|
| Stereo Mode | 4 outputs each on left and right channels |
| Mono Mode | 8 outputs |
| Connectors | 3-pin removable terminal strips |
| Output Step Gain | 0, 3.5 or 9.5dB (configurable with jumpers) |
| Max Output Level | +28dBu across hi-impedance load +24dBm into 600Ω load |
| Output Impedance | 66Ω |
| Frequency Response | ±0.02dB 20Hz to 20kHz |
| Stereo Phase Mismatch | < 1°@ 20kHz |
| SNR | |
| 0dB Input Gain | 115dB |
| +6.5dB Input Gain | 119dB |
| THD+ Noise | 0.001% 20Hz to 20kHz @ 28dBu, unweighted RMS, Hi-Z load 0.01% with 600Ω up to 24dBm |
| Intermodulation Distortion | 0.001% - SMPTE @ 18dBu |
| Stereo Crosstalk | > 115dB @ 1kHz, > 93dB @ 20kHz |
| Output 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) |
|---|
Ordering Options
| Notes | • Rear plate must be specified at time of order - eg: [model]+3RU |
|---|
| Rear Plate Suffix | |
|---|---|
| +SA | Standalone Enclosure Rear Plate |
| +3RU | 3RU rear plate for use with 350FR, 7700FR-C, 7800FR or 7801FR Multiframes |
Enclosures
| 350FR | Portable Multiframe which holds 7 single slot modules |
|---|---|
| 7700FR-C | 3RU Multiframe which holds 15 single slot modules |
| 7800FR | 3RU Multiframe which holds 15 single slot modules |
| 7801FR | 1RU Multiframe which holds up to 4 single slot or 2 dual slot modules |
| S7701FR | 7700 Series Standalone Enclosure |