AK4385VT

AK4385VT Datasheet


[AK4385]

Part Datasheet
AK4385VT AK4385VT AK4385VT (pdf)
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[AK4385]

AK4385
108dB 192kHz 24-Bit 2ch DAC

The AK4385 offers the perfect mix for cost and performance based audio systems. Using AKM's multi bit architecture for its modulator the AK4385 delivers a wide dynamic range while preserving linearity for improved THD+N performance. The AK4385 has full differential SCF outputs, removing the need for AC coupling capacitors and 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 applications including DVD-Audio. The AK4385 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 On chip SCF Digital de-emphasis for 32k, 44.1k and 48kHz sampling Soft mute Digital Attenuator Linear 256 steps I/F format 24-Bit MSB justified, 24/20/16-Bit LSB justified or I2S 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 -94dB Dynamic Range 108dB High Tolerance to Clock Jitter Power supply to 5.25V Very Small Package 16pin TSSOP 6.4mm x 5.0mm AK4381 Pin Compatible

MCLK

CSN CCLK CDTI

LRCK BICK SDTI
µP Interface

De-emphasis Control

Clock Divider

Audio Data Interface
8X Interpolator
8X Interpolator

Modulator

Modulator

VDD VSS

DZFL DZFR AOUTL+ AOUTL-

AOUTR+ AOUTR-

MS0246-E-02 -1-
2010/09
• Ordering Guide

AK4385ET AK4385VT AKD4385
• Pin Layout
-20 ~ +85°C
16pin TSSOP 0.65mm pitch
-40 ~ +85°C
16pin TSSOP 0.65mm pitch

Evaluation Board for AK4385

MCLK

BICK

SDTI

LRCK

CCLK

CDTI

Top View

DZFL

DZFR

AOUTL+

AOUTL-

AOUTR+

AOUTR-
[AK4385]

PIN/FUNCTION

No. Pin Name

I/O Function
1 MCLK

I Master Clock Input Pin

An external TTL clock should be input on this pin.
2 BICK

I Audio Serial Data Clock Pin
3 SDTI

I Audio Serial Data Input Pin
4 LRCK

I L/R Clock Pin
5 PDN

I Power-Down Mode Pin

When at “L”, the AK4385 is in the power-down mode and is held in reset.

The AK4385 must be reset once upon power-up.
6 CSN

Chip Select Pin
7 CCLK
Ordering Guide AK4385ET was added.

MARKING AK4385ET was added.

PACKAGE The package dimension was changed.

IMPORTANT NOTICE
z These products and their specifications are subject to change without notice. When you consider any use or application of these products, please make inquiries the sales office of Asahi Kasei Microdevices Corporation AKM or authorized distributors as to current status of the products.
z Descriptions of external circuits, application circuits, software and other related information contained in this document are provided only to illustrate the operation and application examples of the semiconductor products. You are fully responsible for the incorporation of these external circuits, application circuits, software and other related information in the design of your equipments. AKM assumes no responsibility for any losses incurred by you or third parties arising from the use of these information herein. AKM assumes no liability for infringement of any patent, intellectual property, or other rights in the application or use of such information contained herein.
z Any export of these products, or devices or systems containing them, may require an export license or other official approval under the law and regulations of the country of export pertaining to customs and tariffs, currency exchange, or strategic materials.
z AKM products are neither intended nor authorized for use as critical componentsNote1 in any safety, life support, or other hazard related device or systemNote2 , and AKM assumes no responsibility for such use, except for the use approved with the express written consent by Representative Director of AKM. As used here Note1 A critical component is one whose failure to function or perform may reasonably be expected to result, whether directly or indirectly, in the loss of the safety or effectiveness of the device or system containing it, and which must therefore meet very high standards of performance and reliability. Note2 A hazard related device or system is one designed or intended for life support or maintenance of safety or for applications in medicine, aerospace, nuclear energy, or other fields, in which its failure to function or perform may reasonably be expected to result in loss of life or in significant injury or damage to person or property.
z It is the responsibility of the buyer or distributor of AKM products, who distributes, disposes of, or otherwise places the product with a third party, to notify such third party in advance of the above content and conditions, and the buyer or distributor agrees to assume any and all responsibility and liability for and hold AKM harmless from any and all claims arising from the use of said product in the absence of such notification.

MS0246-E-02
- 23 -
2010/09
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Datasheet ID: AK4385VT 515878