AK4421ET

AK4421ET Datasheet

[AK4421]

Part	Datasheet
AK4421ET	AK4421ET (pdf)

PDF Datasheet Preview
[AK4421] AK4421 192kHz 24-Bit Stereo DAC with 2Vrms Output The AK4421 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 AK4421 delivers a wide dynamic range while preserving linearity for improved THD+N performance. The AK4421 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 AK4421 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 -3dB output level Dynamic Range 102dB Automatic Power-on Reset Circuit Power supply ~ +3.6V Ta = -20 to 85°C Small Package 16pin TSSOP 6.4mm x 5.0mm MCLK SMUTE DIF Control Interface LRCK BICK SDTI Audio Data Interface Clock Divider 8X Interpolator Modulator SCF LPF 8X Interpolator Modulator SCF LPF Charge Pump CN VEE VSS2 CVDD VDD DZF VSS1 AOUTL AOUTR MS0945-E-01 -1- 2008/08 • Ordering Guide AK4421ET AKD4421 • Pin Layout -20 ~ +85°C 16pin TSSOP 0.65mm pitch Evaluation Board for AK4421 [AK4421] SMUTE MCLK BICK SDTI LRCK AK4421 Top View VSS2 CVDD VSS1 AOUTL AOUTR - Compatibility with AK4420, AK4421 and AK4424 Digital de-emphasis I/F format Pin out Power Supply THD+N DR Pin#3 Pin#8 Operating Temperature AK4420 24-bit MSB justified SMUTE DIF ~ +5.5V -92dB 105dB ET -20 ~ +85°C VT -40 ~ +85°C AK4421 - 24-bit MSB justified SMUTE DIF ~ +3.6V -92dB -3dBFS 102dB ET -20 ~ +85°C AK4424 X DEM SMUTE ~ +5.5V -92dB 105dB ET -20 ~ +85°C - Not available X Available MS0945-E-01 -2-

PDF Datasheet Preview

[AK4421]

AK4421
192kHz 24-Bit Stereo DAC with 2Vrms Output

The AK4421 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 AK4421 delivers a wide dynamic range while preserving linearity for improved THD+N performance. The AK4421 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 AK4421 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 -3dB output level Dynamic Range 102dB Automatic Power-on Reset Circuit Power supply ~ +3.6V Ta = -20 to 85°C Small Package 16pin TSSOP 6.4mm x 5.0mm

MCLK

SMUTE DIF

Control Interface

LRCK BICK SDTI

Audio Data Interface

Clock Divider
8X Interpolator

Modulator

SCF LPF
8X Interpolator

Modulator

SCF LPF

Charge Pump

CN VEE VSS2

CVDD

VDD DZF VSS1 AOUTL

AOUTR

MS0945-E-01 -1-
2008/08
• Ordering Guide

AK4421ET AKD4421
• Pin Layout
-20 ~ +85°C
16pin TSSOP 0.65mm pitch

Evaluation Board for AK4421
[AK4421]

SMUTE

MCLK

BICK

SDTI

LRCK

AK4421 Top View

VSS2

CVDD

VSS1

AOUTL

AOUTR
- Compatibility with AK4420, AK4421 and AK4424

Digital de-emphasis

I/F format

Pin out

Power Supply THD+N DR

Pin#3 Pin#8

Operating Temperature

AK4420
24-bit MSB justified

SMUTE

DIF ~ +5.5V
-92dB 105dB ET -20 ~ +85°C VT -40 ~ +85°C

AK4421 -
24-bit MSB justified

SMUTE DIF
~ +3.6V -92dB -3dBFS
102dB

ET -20 ~ +85°C

AK4424 X

DEM SMUTE ~ +5.5V -92dB 105dB

ET -20 ~ +85°C
- Not available X Available

MS0945-E-01 -2-

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Datasheet ID: AK4421ET 515882