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Apogee Quality – Multi-channel functionality

Designed for the latest hard-disk recording systems, the DA-16

"IntelliDAC" offers 16 channels of Apogee quality at an excep-

tionally affordable price, handling 24-bit D/A conversion at

sample rates up to 96 kHz. The converters can source their dig-

ital input from either AES/EBU, ADAT optical or TDIF sources,

and the unit can sync to word clock or a specified input. ADAT

and TDIF inputs are organized into two groups of eight, and

channels 1-8 and 9–16 can have different sources. In addition,

the light-pipe inputs accept the Sonorus S/MUX protocol for

sample-splitting high-resolution signals into optical interfaces,

allowing access to all 16 channels – the first time this protocol

has been included on an Apogee converter.

The input sample rate is detected automatically, and a two-level

"Lock" indicator shows "wide" (up to ±150 degrees) and "nar-

row" (5 degrees) lock. LEDs indicate signal status on each chan-

nel, with the LED intensity modulated by the signal level to give

an "analog-like" display. The balanced analog outputs are sup-

plied in groups of eight channels on 25-pin D connectors, in

keeping with other Apogee D/A conversion systems using

DA-16 Preliminary Speciﬁcations

INPUTS:

OUTPUTS:

RESOLUTION:

SAMPLE RATES:

RELATIVE THD+N (S/(N+D):

DYNAMIC RANGE, –60 dB:

PASSBAND RIPPLE:

STOPBAND ATTENUATION:

INTERCHANNEL CROSSTALK:

FREQUENCY RESPONSE, 10 Hz–20 kHz:

Gain:

Phase:

FUNCTIONALITY:

The features and speciﬁcations above, and other information provided in this preliminary data sheet, are subject to change

without notice. Apogee Electronics Corporation reserves the right to make design changes without prior warning, and the

appearance or mention of any feature, future enhancement, capability or performance parameter given in this document is not

a guarantee of its availability in or in conjunction with an actual unit. Apogee and Clocked by Apogee are trademarks or regis-

tered trademarks of Apogee Electronics Corporation. Other trademarks are the property of their respective owners.

, 3145 Donald Douglas Loop South, Santa Monica, CA 90405-3210, USA.

POGEE

LECTRONICS

ORPORATION

Tel: +1 310/915-1000 Fax: +1 310/391-6262. Email: [email protected]. Web: www.apogeedigital.com

v3–04/01

16 channels of AES/EBU,

TDIF and ADAT (regular and S/MUX)

16 analog outputs, balanced,

simulated Class A, –10 dBV to +28dBu

24-bit, Delta-Sigma conversion

32–106 KHz

–104 dB @ 1kHz, –0.5 dBFS input

–116dB A-weighted

0.0002 dB

115 dB

–125 dB

±0.15 dB

<< 1.0 degrees

Wide and Narrow Lock indicators,

sample rate indicators.

Signal present indicator per channel

Clock source selection,

PRELIMINARY DATA SHEET

16-channel 96 kHz D/A with AES, ADAT,

S/MUX and TDIF, Intelligent Reclocking

these connectors (the pinout is the same as on Tascam sys-

tems).

The subtitle "IntelliDAC" relates to the converter's unique

"intelligent" two-stage re-clocking system, a first for Apogee.

Apogee converters have traditionally excelled at removing jit-

ter from the incoming clock signal, but for extremely jittery input

sources, more control is needed. The DA-16 solves this problem

by utilizing two clocks. A fast-responding 'read' clock, with a wide

locking range, ﬁlls a dedicated FIFO buffer, while an ultra-low-jit-

ter 'write' clock writes the data out of the buffer, and is used to

clock the converters.

The advantage of this conﬁguration is that both incoming clock

and data are de-jittered. In addition, the system is less sensitive to

phase errors between synchronous digital sources. Errors up to

plus or minus 150 degrees can be corrected, substantially reduc-

ing the chances of glitching, and enabling the DAC to offer supe-

rior performance even when the input signal is extremely unsta-

ble.

CONNECTORS:

CASE:

POWER SUPPLY:

INPUT VOLTAGES:

POWER CONSUMPTION:

WC, Bank 1 or Bank 2

Input selector (2x)

Power switch & indicator

Digital gain control

1 IEC power connector chassis male

1 DB25-B for AES-EBU input.

2 DB25-B for TDIF input

4 Toslink receivers for ADAT-S/MUX input

1 BNC for Wordclock input

2 DB25-B for analog output,

Tascam standard pinout

1U high

Linear power supply,

Toroidal transformer

100/240 Volt AC 50/60 Hz

TBD

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