AD1958 is a digital audio decoder launched by Analog Devices. It supports 16-/18-/20-/24-Bit data and 24 bits, 192 kHz sampling rate. It can accept 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz and 192 kHz. The device uses a multi-bit Sigma-Delta modulator, which has a “perfect differential linearity restoration” function to reduce idle tone and noise floor. AD1958 also uses data-directed scrambling DACs that are least sensitive to jitter. The device uses single-ended output for easy use. At 48 kHz sampling rate (A-weighted stereo), the signal-to-noise ratio of AD1958 is 108 dB (not muted).
The AD1958 is a complete high-performance single-chip stereo digital audio playback system. It is comprised of a multibit sigma-delta modulator, digital interpolation filters, and analog output drive circuitry with an on-board dual PLL clock generator. The device accepts 16-, 18-, 20-, or 24-bit data and supports sample rates up to 192 kHz.
Key features include a multibit sigma-delta modulator with Perfect Differential Linearity Restoration to reduce idle tones and noise floor, a data-directed scrambling DAC for jitter insensitivity, and an on-chip clickless volume control. The system operates from a single 5 V power supply and is housed in a 28-lead SSOP package.
| Resolution | 24 Bits |
|---|---|
| Signal-to-Noise Ratio (A-Weighted) | 108 dB |
| Total Harmonic Distortion + Noise | -96 dB |
| Supply Voltage | 5.0V |
| Operating Temperature Range | -40°C to +105°C |
| Package Type | 28-Lead SSOP |
| Master Clock Oscillator | 27 MHz |
The AD1958 supports a wide range of sample rates including 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, and 192 kHz.
Yes, the AD1958 is fully compatible with all known DVD formats, including 96 kHz and 192 kHz sample frequencies and 24 bits.
The AD1958 is housed in a 28-lead SSOP plastic package.