BENCHMARK
AD2404-96 4 CHANNEL & AD2408-96 8 CHANNEL A/D CONVERTERS

AD2404-96

AD2408-96

AD2404-96 4 CHANNEL & AD2408-96 8 CHANNEL A/D CONVERTERS

FEATURES:

• 16, 20 & 24-bit recording

• 44.1, 48, 88.2, 96 kHz sample rates

• 9 segment true digital metering

• 110 Ohm or 75 Ohm digital outputs

• 117 dB dynamic range

• THD+N = -110 dB (0.00032%) @ -1dBFS

• <9 pS jitter

• Many noise shaped Word Length Reduction settings

• Highest performance at a most affordable price

When Benchmark introduced its original A/D converters, a new value paradigm was created by providing the very highest performance at a cost per channel that was among the lowest in the industry. The new AD2404-96 converter holds the tradition high with spectacular THD+N performance of -110 dB at -1 dBFS, and 117 dB dynamic range. The AD2408-96 has sample rates of 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, and varispeed. Intrinsic clock jitter is less than 9 pico-seconds and the AD2408-96's PLL provides ultra clean lockup to an AES reference. I/O options include AES3-1992 (110-Ohm balanced with XLR type connectors) and AES3id - SMPTE-276M (75-Ohm unbalanced with BNC connectors).

When operating in either the 16 or 20-bit modes, the AD2404-96 and AD2408-96 provide selectable TPDF, NN™-Near Nyquist or NS™ Noise Shaped Word Length Reduction (WLR).  Unlike most other A/D converters, the noise shaped Word Length Reduction curves are based on the most current psycho-acoustic model.  These curves were developed in conjunction with the research performed by the word length and dither gurus at the University of Waterloo in Ontario, Canada. Rob Wanamaker, Ph.D. generated the coefficients for the Digital Filters in the converter and for the first time they take into account real world noise of ancillary equipment and the recording environment.

The AD2404-96 and AD2408-96 have an international power supply and are housed in a heavy-gauge RF-tight chassis. The internal power supply includes a toroidal transformer and carries no performance penalty. AC line noise is at least 143 dB below full scale on all channels (measurement limits).

Four or eight channels of ultra high 24-bit 96 kHz performance, a compact 1RU chassis, internal or external power, and a choice of digital interface, all at an unbeatable price.

AD2404-96 4 CHANNEL A/D CONVERTER

AD2404-96 A/D Converter

An accessory cord set is available that will allow simultaneous output of both 24-bit data and 16, or 20-bit data. This feature allows the master recordings to be made with full 24-bit resolution with a simultaneous, properly word length reduced, 16-bit DAT safety backup recording.

The AD2404-96s four 9 segment true digital meters provide a coarse scale for signal presence monitoring, and a fine scale for precise level monitoring near Full Scale Digital. The 1 dB fine scale also has a selectable peak hold function that holds the highest peak until manually reset. FSD detection is exact.

When systems are created that require redundant power, the external PS-202D provides power for up to twelve four-channel AD2404-96 converter systems. It can also be operated in a dual non-redundant mode.  For small or single system redundant power, a pair of the PS2000s is ideal.  Now facilities can use the digital signal router of their choice, without having to accept poor converter performance.

	AC INPUT VOLTAGE	MAXIMUM AC INPUT CURRENT	MAXIMUM AC INPUT POWER
PRODUCT	(Volts)	(Amps)	(WATTS)
AD2404-96	120.8	0.22	27

AD2408-96 8 CHANNEL A/D CONVERTER

AD2408-96 A/D Converter

The AD2408-96 is an Analog to Digital converter which provides word lengths up to 24-Bit, and sample rates up to 96 kHz.

The AD2408-96s eight 9 segment true digital meters provide a coarse scale for signal presence monitoring, and a fine scale for precise level monitoring near Full Scale Digital. The 1 dB fine scale also has a selectable peak hold function that holds the highest peak until manually reset. FSD detection is exact.

Several different motherboards are available to provide a choice of digital interface connectors (XLR, BNC, Optical, and more coming soon). All analog connectors are balanced XLR.

The AD2408-96 has an international power supply and is housed in a heavy-gauge RF-tight chassis. The internal power supply includes a toroidal transformer and carries no performance penalty. AC line noise is at least 143 dB below full scale on all 8 channels (measurement limits).

When systems are created that require redundant power, the external PS-202D provides power for up to twelve eight-channel AD2408-96 converter systems. It can also be operated in a dual non-redundant mode.  For small or single system redundant power, a pair of the PS2000s is ideal. Now facilities can use the digital signal router of their choice, without having to accept poor converter performance.

	AC INPUT VOLTAGE	MAXIMUM AC INPUT CURRENT	MAXIMUM AC INPUT POWER
PRODUCT	(Volts)	(Amps)	(WATTS)
AD2408-96	120.8	0.44	53

For more information on these products, including technical papers in .pdf format,
see the AD2404-96 page and the AD2408-96 page at the Benchmark website.

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