RME ADI-2 [5/17] Power supply

User's Guide ADI-2 © RME

4.2 Digital Specs

• Clocks: Internal, ADAT In, SPDIF In

• Low jitter design: < 1 ns in PLL mode, all inputs

• Internal clock: 800 ps jitter, random spread spectrum

• Jitter suppression of external clocks: about 30 dB (2.4 kHz)

• Effective clock jitter influence on AD and DA conversion: near zero

• PLL ensures zero dropout, even at more than 100 ns jitter

• Digital Bitclock PLL for trouble-free varispeed ADAT operation

• Suppoerted sample rates: 30 kHz up to 200 kHz

4.3 Digital Interface

• Digital inputs and outputs ground-free transformer coupled

• Formats: optical (TOSLINK), RCA (SPDIF, AES/EBU compatible)

• High-sensitivity input stage RCA: < 0.2 Vpp input level

• Output voltage RCA Consumer 0.8 V, Professional 2.3 V

5. Power Supply

In order to make operating the ADI-2 as flexible as possible, the unit contains a switching regu-

lator of the latest technology, which not only has a high efficiency (> 90%), but also prevents

internal hum noise by operating beyond 100 kHz. Another advantage: the ADI-2 accepts any

power supply with voltages between 8 and 28 V DC, no matter which polarity, and even be-

tween 8 and 20 V AC. Given the power supply can deliver the current needed.

The supplied high-quality switching power supply, 12 V / 2 A, not only accepts any mains volt-

age between 100 V and 240 V (usable world-wide), but is also fully regulated against voltage

fluctuations. Additionally it only weighs 150 g in spite of its high power of 20 Watts.

The large voltage range of the ADI-2 also allows for the use of a rechargeable lead-battery in-

stead of a power supply, for completely independent mobile operation. A matching connection

cable (power jack to terminals 6.3 mm) is available from RME. A Panasonic LC-R122R2PG

battery, 12 V 2.2 Ah, can operate the ADI-2 for 4 hours.