AK4421A

更新时间： 2024-11-30 07:16:11

品牌	Logo	应用领域
AKM		/
页数	文件大小	规格书
19页	334K
描述
192kHz 24-Bit Stereo ΔΣ DAC with 2Vrms Output

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[AK4421A]

AK4421A

192kHz 24-Bit Stereo ΔΣ DAC with 2Vrms Output

GENERAL DESCRIPTION

The AK4421A is 3.3V 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 AK4421A delivers a wide dynamic range while

preserving linearity for improved THD+N performance. The AK4421A 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 portable A/V players, set-top boxes, and digital televisions. The AK4421A 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

Soft mute

I/F format: 24-Bit MSB justified or I²S

Master clock: 512fs, 768fs or 1152fs (Normal Speed Mode)

256fs or 384fs (Double Speed Mode)

128fs or 192fs (Quad Speed Mode)

THD+N: -92dB

Dynamic Range: 102dB

Automatic Power-on Reset Circuit

Power supply: +3.0 ∼ +3.6V

Ta = -20 to 85°C

Small Package: 16pin TSSOP (6.4mm x 5.0mm)

MCLK

VDD

SMUTE

Clock

Divider

Control

Interface

DZF

DIF

VSS1

ΔΣ

SCF

LPF

AOUTL

AOUTR

LRCK

Modulator

Interpolator

Audio

Data

Interface

BICK

SDTI

ΔΣ

SCF

LPF

Modulator

Interpolator

Charge

Pump

CN VEE

VSS2

CVDD

2.2

MS1086-E-01

2009/09

- 1 -

12 3 4 5 6 7...19

中文翻译

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