The AD1955 is a complete, high performance, single chip stereo digital audio playback system comprised of a multi-bit sigma-delta modulator, digital interpolation filters and a continuous-time differential current output DAC section. Unique to this audio DAC is the separate SACD (super audio CD) bit-stream and external digital filter interface, which allows users maximum system flexibility. The AD1955 supports 24-bits, 192 kHz sample rate and is designed for use in high-end SACD players, DVD-audio, home theater, automotive audio, digital mixing consoles, digital audio effect processors and sampling musical keyboards.
Supports 24-Bits, up to 192 kHz Sample Rate PCM Audio Data
Supports SACD bit-stream and External Digital Filter Interface
Multibit Sigma Delta Modulator with "Perfect Differential Linearity Restoration" for Reduced Idle Tones and Noise Floor
Data Directed Scrambling DAC - Least Sensitive to Jitter
8.64 mA p-p Differential Output Current for Optimum Performance, with +3 dB headroom in SACD mode
5 V Power Supply Stereo Audio DAC System
120 dB SNR/DNR (not muted) at 48KHz Sample Rate (A-Weighted Stereo)
123 dB SNR/DNR (Mono)
-110 dB THD+N
110 dB Stopband Attenuation with ±0.0002dB Passband Ripple
Flexible Serial Data Port with Right-Justified, Left-Justified, I2S-Compatible and DSP Serial Port
28 Lead SSOP Plastic Package
Applications include High-End DVD-Audio, SACD, CD, Home Theatre Systems, Automotive Audio Systems, Sampling Musical Keyboards, Digital
Mixing Consoles, Digital Audio Effects Processors
Converter Signal Types - Audio
Converter Type - Digital to Analog Converter
Spec Sheet available - Yes
Operating Temperature (Maximum):
185 F
Operating Temperature (Minimum):
-40 F
No. of DAC:
2
DAC DNR:
123 dB
DAC THD+N:
110 dB @ 1 KHz (-3dB)
Max Sampling Rate:
192 kHz
Voltage supply:
5 V
Resolution:
24 bit
DAC Architecture:
Sigma Delta
Input Signal Types:
Digital Audio
Output (Converted) Signal Type:
Differential Analog