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AD1955

High Performance Multibit Σ∆ DAC with SACD Playback

Analog Devices 

AD1955

PRELIMINARY TECHNICAL DATA

TEST CONDITIONS UNLESS OTHERWISE NOTED

Analog Supply Voltages (AVDD)

Digital Supply Voltages (DVDD)

Reference Current (Iref)

+5.0V

+5.0V

.960 mA

Ambient Temperature

25OC

Input Clock

12.288 MHz

Input Signal

996.11 Hz

0 dB Full Scale

Input Sample Rate

48 kHz

Measurement Bandwidth

20 Hz to 20KHz

Word Width

24 Bits

Load Capacitance

100 pF

Load Impedance

47 k ohms

Input Voltage HI

2.4 V

Input Voltage LO

.8 V

ANALOG PERFORMANCE (See Figures ) Iref = .960 mA

Min

Typ

Max

Units

Resolution

24

Bits

Signal-to-noise Ratio (20 Hz to 20kHz)

Differential Output (A-weighted, RMS) (Stereo)

120

dB

Differential Output (A-weighted, RMS) (Mono)

123

dB

Single-ended (Stereo)

119

dB

Dynamic Range (20 Hz to 20 kHz, -60 dB Input)

Differential Output (A-weighted, RMS) (Stereo)

120

dB

Differential Output (A-weighted, RMS) (Mono)

123

dB

Single-ended (Stereo)

119

dB

Total Harmonic Distortion + Noise (Stereo) at 0 dBFS

-108

dB

Analog Outputs

Differential Output range (Full Scale)

Output Capacitance at Each Output Pin

Output bias current, Each Output

8.64

100

-3.24

mA p-p

pF

mA

Out-of-Band Energy (0.5XFs to 100 kHz)

-90

dB

Reference Voltage

2.39

V

DC Accuracy

Gain Error

+/-3

%

Interchannel Gain Mismatch

0.01

dB

Gain Drift

25

ppm/OC

Interchannel Crosstalk (EIAJ method)

-125

dB

Interchannel Phase Deviation

+/- 0.1

Degrees

Mute Attenuation

-100

dB

De-emphasis Gain Error

+/- 0.1

dB

NOTES:

Performance of right and left channels are identical (exclusive of the Interchannel Gain Mismatch and Interchannel Phase Deviation specifications).

Specifications subject to change without notice.

DIGITAL I/O (-40oC to 105oC)

Input Voltage HI (VIH)

Input Voltage LO (VIL)

Input Leakage (IIH@VIH=2.4 V)

Input Leakage (IIL@VIL=0.8 V)

High Level Output Voltage (VOH) IOH = 1 mA

Low Level Output Voltage (VOL) IOL = 1 mA

Input Capacitance

Specifications subject to change without notice

Min

2.0

2.4

Typ

Max

Units

V

0.8

V

10

uA

10

uA

V

0.4

V

20

pF

-2-

Rev. PrF

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