AK4440 Datasheet, PDF (1/31 Pages) Asahi Kasei Microsystems – 192kHz 24-Bit 8ch DAC with 2Vrms Output

[AK4440]
AK4440
192kHz 24-Bit 8ch DAC with 2Vrms Output
GENERAL DESCRIPTION
The AK4440 is a 5V 24-bit 8ch 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 AK4440 delivers a wide dynamic range while preserving
linearity for improved THD+N performance. The AK4440 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/BD, AV receiver, Home theater systems and set-top boxes. The AK4440 is
offered in a space saving 30pin VSOP 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)
† 24Bit 8 times FIR Digital Filter with Slow roll-off option
† 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
† Control I/F: 3-wire Serial and I²C Bus
† Audio I/F format: MSB justified, LSB justified (16bit, 20bit, 24bit), I²S, TDM
† Master clock: 256fs, 384fs, 512fs or 768fs or 1152fs (Normal Speed Mode)
128fs, 192fs, 256fs or 384fs (Double Speed Mode)
128fs or 192fs (Quad Speed Mode)
† THD+N: -93dB
† Dynamic Range: 105dB
† Automatic Power-on Reset Circuit
† Power Supply: +4.5 to +5.5V
† Ta = -20 to 85°C
† Small Package: 30 pin VSOP (9.7mm x 7.6mm)
MS1088-E-01
-1-
2011/03