AK4426 Datasheet, PDF (1/28 Pages) Asahi Kasei Microsystems – 192kHz 24-Bit Stereo ΔΣ DAC with 2Vrms Output

[AK4426]
AK4426
192kHz 24-Bit Stereo ΔΣ DAC with 2Vrms Output
GENERAL DESCRIPTION
The AK4426 is a 5V 24-bit stereo DAC with an integrated 2Vrms output buffer. A charge pump in the
buffer develops an internal negative power supply rail that enables a ground-referenced 2Vrms output.
Using AKM’s multi bit modulator architecture, the AK4426 delivers a wide dynamic range while preserving
linearity for improved THD+N performance. The AK4426 integrates a combination of switched-capacitor
and continuous-time filters, increasing performance for systems with excessive clock jitter. The 24-bit
word length and 192kHz sampling rate make this part ideal for a wide range of consumer audio
applications, such as DVD, AV receiver system and set-top boxes. The AK4426 is offered in a space
saving 16pin TSSOP package.
FEATURES
† Sampling Rate Ranging from 8kHz to 192kHz
† 128 times Oversampling (Normal Speed Mode)
† 64 times Oversampling (Double Speed Mode)
† 32 times Oversampling (Quad Speed Mode)
† 24-Bit 8 times FIR Digital Filter
† Switched-Capacitor Filter with High Tolerance to Clock Jitter
† Single Ended 2Vrms Output Buffer
† Digital De-emphasis Filter: 32kHz, 44.1kHz or 48kHz
† Soft mute
† Digital Attenuator (Linear 256 Step)
† Control I/F: I²C-Bus
† Audio I/F format: 24Bit MSB justified, 24/20/16 LSB justified or
I²S compatible
† Master clock: 256fs, 384fs, 512fs, 768fs or 1152fs (Normal Speed Mode)
128fs, 192fs, 256fs or 384fs (Double Speed Mode)
128fs, 192fs (Quad Speed Mode)
† THD+N: -91dB
† Dynamic Range: 106dB
† Automatic Power-on Reset Circuit
† Power supply: +4.5 ∼ +5.5V
† Ta = -40 to 85 °C
† Small Package: 16pin TSSOP (6.4mm x 5.0mm)
MS1176-E-02
-1-
2011/03