ak4420 AKM Semiconductor, Inc., ak4420 Datasheet

ak4420

Manufacturer Part Number

ak4420

Description

192khz 24-bit Stereo ?? Dac With 2vrms Output

Manufacturer

AKM Semiconductor, Inc.

Datasheet

1.AK4420.pdf (20 pages)

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Download datasheet (458Kb)

The AK4420 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 AK4420 delivers a wide dynamic range while preserving

linearity for improved THD+N performance. The AK4420 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 AK4420 is offered in a space

saving 16pin TSSOP package.

MS0683-E-04

SMUTE

LRCK

BICK

SDTI

DIF

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

Interface

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 I

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

THD+N: -92dB

Dynamic Range: 105dB

Automatic Power-on Reset Circuit

Power supply: +4.5 ∼ +5.5V

Ta = -20 to 85°C (ET), -40 to 85°C (VT)

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

Audio

Interface

Data

Control

GENERAL DESCRIPTION

256fs or 384fs (Double Speed Mode)

128fs, 192fs (Quad Speed Mode)

FEATURES

Interpolator

- 1 -

Charge

Pump

1μ

CN VEE

1μ

Modulator

MCLK

Divider

Clock

VSS2

ΔΣ

CVDD

SCF

LPF

SCF

LPF

AK4420

VDD

DZF

VSS1

[AK4420]

AOUTR

AOUTL

2008/06

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