AK4440

更新时间： 2024-11-18 07:16:11

品牌	Logo	应用领域
AKM		/
页数	文件大小	规格书
31页	585K
描述
192kHz 24-Bit 8ch DAC with 2Vrms Output

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AK4440 数据手册

[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

2011/03

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