AK4421AET

AK4421AET Datasheet

[AK4421A]

Part	Datasheet
AK4421AET	AK4421AET (pdf)

PDF Datasheet Preview
[AK4421A] AK4421A 192kHz 24-Bit Stereo DAC with 2Vrms Output 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 ~ +3.6V 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 MS1086-E-01 -1- 2009/09 • Ordering Guide AK4421AET AKD4421A • Pin Layout -20 ~ +85°C 16pin TSSOP 0.65mm pitch Evaluation Board for AK4421A [AK4421A] SMUTE MCLK BICK SDTI LRCK AK4421A Top View VSS2 CVDD VSS1 AOUTL AOUTR - Compatibility with AK4420, AK4421, AK4424, AK4423 and AK4421A Power Supply Digital de-emphasis I/F format Pin out Pin#3 Pin#8 THD+N DR Operating Temperature AK4420 ~ +5.5V - 24-bit SMUTE DIF -92dB 105dB ET -20 ~ +85°C VT -40 ~ +85°C AK4424 ~ +5.5V X DEM SMUTE -92dB 105dB ET -20 ~ +85°C AK4421 ~ +3.6V 24-bit SMUTE DIF -92dB -3dBFS 102dB ET -20 ~ +85°C AK4421A ~ +3.6V 24-bit SMUTE DIF -92dB 102dB AK4423 ~ +3.6V X SMUTE DEM -92dB 102dB ET -20 ~ +85°C ET -20 ~ +85°C

PDF Datasheet Preview

[AK4421A]

AK4421A
192kHz 24-Bit Stereo DAC with 2Vrms Output

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 ~ +3.6V 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

MS1086-E-01 -1-
2009/09
• Ordering Guide

AK4421AET AKD4421A
• Pin Layout
-20 ~ +85°C
16pin TSSOP 0.65mm pitch

Evaluation Board for AK4421A
[AK4421A]

SMUTE

MCLK

BICK

SDTI

LRCK

AK4421A Top View

VSS2

CVDD

VSS1

AOUTL

AOUTR
- Compatibility with AK4420, AK4421, AK4424, AK4423 and AK4421A

Power Supply Digital de-emphasis I/F format Pin out Pin#3

Pin#8 THD+N DR

Operating Temperature

AK4420
~ +5.5V -
24-bit SMUTE DIF -92dB 105dB

ET -20 ~ +85°C VT -40 ~ +85°C

AK4424 ~ +5.5V

X DEM SMUTE -92dB 105dB

ET -20 ~ +85°C

AK4421 ~ +3.6V
24-bit

SMUTE DIF
-92dB -3dBFS 102dB

ET -20 ~ +85°C

AK4421A ~ +3.6V
24-bit

SMUTE DIF -92dB
102dB

AK4423 ~ +3.6V

X SMUTE DEM -92dB 102dB

ET -20 ~ +85°C ET -20 ~ +85°C

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Datasheet ID: AK4421AET 515883