AK5371A

AK5371A Datasheet

[AK5371A]

Part	Datasheet
AK5371A	AK5371A (pdf)

PDF Datasheet Preview
[AK5371A] Features: - USB-IF Certified - Incorporates USB Audio Controller USB Serial Interface Engine Audio Class Encoder/Decoder 2 Endpoints FIFO USB transceiver - 16 bit A/D Converter 2 channels Mute/Volume Control A/D S/N 84dBA 44.1kHz, Gain = 0dB - Low Power Dissipation Normal Operation 26mA Suspend Mode < 1uA - Programmable Gain Amplifier IPGA +24dB to Step - 20dB Pre-amplifier - On-chip PLL 5 Sampling Frequencies support 8kHz, 11.025kHz 22.05kHz, 44.1kHz, 48kHz - EEPROM I/F can customize Device Descriptor, and String Descriptor - Single Power Supply, Low Power Volts - Package 48pin LQFP AK5371A 2ch A/D Converter with USB I/F The AK5371A is stereo A/D converter with USB I/F. The AK5371A integrates USB serial interface engine, USB transceiver, audio class processing unit, endpoints, and high quality 2 channel AD converter into the chip. As the AK5371A incorporates PLL, it can support several sampling frequencies, 8kHz, 11.025kHz, 22.05kHz, 44.1kHz, and 48kHz with only one crystal. Moreover, the AKAK5371A integrates volume control, and mute function. Not only power consumption at normal operation is very low, but also the current at suspend mode is less than 1uA. The AK5371A includes 20dB fixed gain pre-amplifier. In addition to this, as the AK5371A also incorporates IPGA which can amplify the microphone signal up to +24dB, total gain is 44dB maximum. The AK5371A has EEPROM I/F for customizing Device Descriptor and String Descriptor. By connecting 1K bit, 2K bit, or 4Kbit MicrowireTM type EEPROM, the AK5371A can customize Vendor ID, Product ID in Device Descriptor, and String Descriptor. This device is good for not only business application such as conferencing but also games, voice recognition, and Karaoke. Related Documents For the detail of USB specification, and Audio Class, please refer to the following documents. MS0546-E-01 -1- 2008/11 [AK5371A] • Block Diagram VSS2 MICBIAS MICR 20dB - AMPR1O AMPR2I MICL 20dB - AMPL1O AMPL2I BIASSEL VA VREF VCOM VSS3 VD VSS1 SUSN VREF Common Voltage Config/String ROM CS SK EEPROM Control EPAO EPDI • Ordering Guide AK5371AVQ 0 ~ +70 °C 48pin LQFP 0.5mm pitch AKD5371 Evaluation Board • Pin Layout NC EPDI EPEN EPSEL NC SUSN RSTN NC DP DN NC VD VSS1 VSS2 NC TESTMODE3 XTALOUT XTALIN TESTMODE2 LFLT1 LFLT2 BIASSEL NC 45 1 5 10 15 40 20 EPAO TEST TESTMODE1 VREF VSS3 AMPR2O AMPR2I AMPR1O MICR NC AMPL2O AMPL2I AMPL1O MICL MICBIAS VCOM NC MS0546-E-01 -2- 2008/11 Signal Name 2 VSS1 3 VSS2 5 TESTMODE3 6 XTALOUT 7 XTALIN 8 TESTMODE2 9 LFLT1 10 LFLT2 11 BIASSEL 12 NC 13 NC 14 VCOM 15 MICBIAS 16 MICL 17 AMPL1O 18 AMPL2I 19 AMPL2O 20 NC 21 MICR 22 AMPR1O 23 AMPR2I 24 AMPR2O [AK5371A] Pin/Function I/O Ana / Dig PD -ID OA IA OA --OA IA OA IA OA -IA OA IA OA Digital Power Supply, 3.3V Digital Ground,0V Bulk Ground, 0V No Connection Please tie down to VSS3 for normal operation. <REMARK> This drawing does NOT mean physical pin locations/ordering R1:4.7k 10Ω 10uH 0.1u Regulator 0.1u 100u 0.1u 4.7u 0.1u 4.7u 0.1u 4.7u 0.1u 4.7u 0.1u R1:4.7k VREF VCOM MICBIAS VA VSS3 VSS2 VD VSS1 RSTN 0.1u 100u C1:1.0u< C2:0.33u C1:1.0u< Phone Jack STEREO SW C2:0.33u MICR AMPR1O AMPR2I MICL AMPL1O AMPL2I AMP2RO AMP2LO CS SK EPAO EPDI Testmode 1 Testmode 2 Testmode 3 Test DN LFLT1,2 XTALOUT XTALIN 56k 10u 3300p EEPROM 1.5k D+ To Host/Hub 51k C3:1000p C3:1000p 8200p 18k 6800p Cd 1M 11.2896M Cd 5V GND GND VSS3 VSS1 C1 is specified for lower end cut-off frequency C3 forms Anti-aliasing filter in conjuction with the internal resistor at AMPR2O/AMPL2O R0 0Ω resister when BIASSEL is Low. 330Ω resister when BIASSEL is High Cd Please select the appropriate value according to crystal resonator’s characteristics MS0546-E-01 - 14 - 2008/11 AK5371A Descriptors Specification [AK5371A] 1 Device descriptor Offset 0 1 2 4 5 6 7 8 10 12 14 15 16 17 Field

PDF Datasheet Preview

[AK5371A]

Features:
- USB-IF Certified
- Incorporates USB Audio Controller USB Serial Interface Engine Audio Class Encoder/Decoder 2 Endpoints FIFO USB transceiver
- 16 bit A/D Converter 2 channels Mute/Volume Control A/D S/N 84dBA 44.1kHz, Gain = 0dB
- Low Power Dissipation Normal Operation 26mA Suspend Mode < 1uA
- Programmable Gain Amplifier IPGA +24dB to Step
- 20dB Pre-amplifier
- On-chip PLL 5 Sampling Frequencies support 8kHz, 11.025kHz 22.05kHz, 44.1kHz, 48kHz
- EEPROM I/F can customize Device Descriptor, and String Descriptor
- Single Power Supply, Low Power Volts
- Package 48pin LQFP

AK5371A
2ch A/D Converter with USB I/F

The AK5371A is stereo A/D converter with USB I/F. The AK5371A integrates USB serial interface engine, USB transceiver, audio class processing unit, endpoints, and high quality 2 channel AD converter into the chip.

As the AK5371A incorporates PLL, it can support several sampling frequencies, 8kHz, 11.025kHz, 22.05kHz, 44.1kHz, and 48kHz with only one crystal. Moreover, the AKAK5371A integrates volume control, and mute function.

Not only power consumption at normal operation is very low, but also the current at suspend mode is less than 1uA.

The AK5371A includes 20dB fixed gain pre-amplifier. In addition to this, as the AK5371A also incorporates IPGA which can amplify the microphone signal up to +24dB, total gain is 44dB maximum.

The AK5371A has EEPROM I/F for customizing Device Descriptor and String Descriptor. By connecting 1K bit, 2K bit, or 4Kbit MicrowireTM type EEPROM, the AK5371A can customize Vendor ID, Product ID in Device Descriptor, and String Descriptor.

This device is good for not only business application such as conferencing but also games, voice recognition, and Karaoke.

Related Documents For the detail of USB specification, and Audio Class, please refer to the following documents.

MS0546-E-01 -1-
2008/11
[AK5371A]
• Block Diagram

VSS2 MICBIAS

MICR
20dB -

AMPR1O

AMPR2I

MICL
20dB -

AMPL1O

AMPL2I

BIASSEL VA VREF VCOM VSS3 VD VSS1 SUSN

VREF

Common Voltage

Config/String ROM

CS SK

EEPROM Control

EPAO EPDI
• Ordering Guide

AK5371AVQ
0 ~ +70 °C
48pin LQFP 0.5mm pitch

AKD5371

Evaluation Board
• Pin Layout

NC EPDI EPEN EPSEL

NC SUSN RSTN

NC DP DN NC

VD VSS1 VSS2

NC TESTMODE3

XTALOUT XTALIN

TESTMODE2 LFLT1 LFLT2

BIASSEL NC
45 1 5
10 15
40 20

EPAO

TEST

TESTMODE1

VREF

VSS3

AMPR2O AMPR2I AMPR1O MICR NC AMPL2O AMPL2I AMPL1O MICL MICBIAS VCOM NC

MS0546-E-01 -2-
2008/11

Signal Name
2 VSS1
3 VSS2
5 TESTMODE3
6 XTALOUT 7 XTALIN 8 TESTMODE2 9 LFLT1
10 LFLT2
11 BIASSEL
12 NC 13 NC 14 VCOM 15 MICBIAS
16 MICL 17 AMPL1O 18 AMPL2I 19 AMPL2O 20 NC 21 MICR 22 AMPR1O 23 AMPR2I 24 AMPR2O
[AK5371A]

Pin/Function

I/O Ana / Dig PD -ID OA IA OA
--OA

IA OA IA OA -IA OA IA OA

Digital Power Supply, 3.3V Digital Ground,0V Bulk Ground, 0V No Connection Please tie down to VSS3 for normal operation.
<REMARK> This drawing does NOT mean physical pin locations/ordering

R1:4.7k
10Ω 10uH
0.1u

Regulator
0.1u 100u
0.1u 4.7u 0.1u 4.7u 0.1u 4.7u
0.1u 4.7u
0.1u

R1:4.7k

VREF VCOM

MICBIAS

VA VSS3 VSS2 VD VSS1 RSTN
0.1u 100u

C1:1.0u< C2:0.33u

C1:1.0u< Phone Jack STEREO SW C2:0.33u

MICR AMPR1O AMPR2I

MICL AMPL1O AMPL2I

AMP2RO AMP2LO

CS SK EPAO EPDI Testmode 1 Testmode 2 Testmode 3 Test

DN LFLT1,2 XTALOUT XTALIN
56k 10u
3300p

EEPROM
1.5k D+

To Host/Hub
51k C3:1000p C3:1000p 8200p
18k 6800p Cd
1M 11.2896M Cd
5V GND

GND VSS3

VSS1

C1 is specified for lower end cut-off frequency C3 forms Anti-aliasing filter in conjuction with the internal resistor at AMPR2O/AMPL2O R0 0Ω resister when BIASSEL is Low. 330Ω resister when BIASSEL is High Cd Please select the appropriate value according to crystal resonator’s characteristics

MS0546-E-01
- 14 -
2008/11

AK5371A Descriptors Specification
[AK5371A]
1 Device descriptor

Offset 0 1 2 4 5 6 7 8 10 12 14 15 16 17

Field

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AK5371A Datasheet file may be downloaded here without warranties.

Datasheet ID: AK5371A 515903