Analog audio to AES/EBU converter.

The ADC6820NS is an audio A to D converter with audio delay and synchronizer. The two modules can provide two/four balanced audio inputs, two unbalanced and two unbalanced AES outputs. Either DARS or Genlock can be selected as synchronized signal. In addition to manual delay, both ADC6820NS and can receive synchronized signal from video board where the tracking delay is set.

• One pair/two pairs of analog balanced inputs
• Two pairs of unbalanced AES and two pairs of balanced AES outputs
• Selectable delay and synchronizing mode
• Either DARS or Genlock can be selected as synchronized signal
• Different audio sampling frequency rate and different
• size of sampling setting for option
• Generating two fixed-frequency audio signals
• -96 ~ +12dB audio gain range adjustment
• Maximum 1980ms @ 32KHz manual delay
• Local or remote control and monitoring
• Supporting audio tracking

Balanced Analog Audio Input
Number of inputs	ADC6820NS: 2
Connector	Audio connector
Input coupling	AC coupled
Impedance	High impedance
Maximum input level	+ 16 dB to +28 dB in 2 dB steps
Digital Audio Output
Number of outputs	2 AES 75 ohm BNC and 2 AES 110 ohm balanced
Standard	AES3: 1992, AES3id: 1995 and SMPTE276M
Impedance	75 ohm/110 ohm
Status	Professional
110 Ohm Output
Impedance	I110 ohm +/-20%
Level	V-7 V peak-to-peak
Common mode	>30 dB below output signal
Rise and fall time	5 to 30 ns
Jitter	0.02 UI
75 Ohm Output
Return loss	>30 dB up to 6 MHz
Output level	1 1.0 V + 0.1 V peak-to-peak
DC offset	<10 mV
Rise and fall time	30 to 44 ns
Jitter	0.02 UI
External Reference Input
Connector type	BNC (unbalanced)
	Audio connector (balanced)
Impedance	75 ohm (unbalanced)
	110 ohm ( balanced)
Return loss	>30 dB up to 6 MHz (unbalanced)
AES reference sampling rate
Video reference	32 kHz, 48 kHz, 96 kHz
	525,625 Black Burst
Performance
Quantization
Sampling rate	16 bits, 20 bits, 24 bits
Frequency response	32 kHz, 48 kHz, 96 kHz
Linearity	<+/-0.05 dB @-10 dBFS, 20 Hz to 20 kHz
Signal to noise @ dBFS	<+/-0.3 dB up to -100 dBFS
THD + N	100 dB (no filter)
	<0.003% @ (20 Hz to 20 kHz),
IMD	1 dBFS=+ 23 dBu High-Z load
	>90 dB (CCIF two tone test @ d dBFS = + 18 dBu,
Crosstalk	+24 dBu, +28 dBu, High-Z load)
	>90 dB, 20 Hz to 20 kHz
Power Consumption
Power	4.1 W
Positive rail	550mA
Negative rail	20mA