AK5578 반도체 회로 부품 판매점
8-Channel Differential 32-bit ADC
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 AKM |
[AK5578]
AK5578
8-Channel Differential 32-bit ADC
1. General Description
The AK557x series is a 32-bit, 768 kHz sampling, differential input A/D converter for digital audio
systems. It achieves 121 dB dynamic range and 112 dB S/(N+D) while maintaining low power
consumption performance.
The AK5578 integrates a 8-channel A/D converter, suitable for mixers and multi-channel recorders. Four
types of digital filters are integrated and selectable according to the sound quality preference. The
AK5578 can be easily connected to a DSP by supporting TDM audio formats. Additionally, it supports
DSD output up to 11.2MHz. The channel summation improves the dynamic range to 124 dB in 8-to-4
mode, to 127 dB in 8-to-2 mode and to 130 dB in 8-to-1 mode.
2. Features
Sampling Rate: 8 kHz-768 kHz
Input: Full Differential Inputs
S/(N+D): 112 dB
DR: 121 dB (8-to-4 mode: 124 dB, 8-to-2 mode: 127 dB, 8-to-1 mode: 130 dB)
S/N: 121 dB (8-to-4 mode: 124 dB, 8-to-2 mode: 127 dB, 8-to-1 mode: 130 dB)
Internal Filter: Four types of LPF, Digital HPF
Power Supply: 4.75-5.25 V (Analog), 1.7-1.98 V or 3.0-3.6 V (Digital)
Output Format:
PCM mode: 24/32-bit MSB justified, I2S or TDM
DSD mode: DSD Native 64, 128, 256
Maximized Slot Efficiency in TDM Mode by Optimal Data Placed Mode
Cascade TDM I/F:
TDM512: fs= 48 kHz
TDM256: fs= 96 kHz or 48 kHz
TDM128: fs= 192 kHz, 96 kHz or 48 kHz
Operation Mode: Master Mode & Slave Mode
Detection Function: Input Overflow Flag
Serial Interface: 3-wire Serial and I2C μP I/F (Pin setting is also available)
Power Consumption: 536 mW (@AVDD= 5.0 V, TVDD= 3.3 V, fs= 48 kHz)
Package: 64-pin QFN
015016736-E-00
-1-
2015/12
[AK5578]
3. Table of Contents
1. General Description ............................................................................................................................ 1
2. Features .............................................................................................................................................. 1
3. Table of Contents................................................................................................................................ 2
4. Block Diagram..................................................................................................................................... 3
■ Block Diagram.................................................................................................................................... 3
5. Pin Configurations and Functions ...................................................................................................... 4
■ Pin Configurations ............................................................................................................................. 4
■ Pin Functions ..................................................................................................................................... 5
■ Handling of Unused Pin ..................................................................................................................... 7
6. Absolute Maximum Ratings................................................................................................................ 8
7. Recommended Operation Conditions ................................................................................................ 8
8. Analog Characteristics........................................................................................................................ 9
9. Filter Characteristics ......................................................................................................................... 10
■ ADC Filter Characteristics (fs= 48 kHz) .......................................................................................... 10
■ ADC Filter Characteristics (fs= 96 kHz) .......................................................................................... 12
■ ADC Filter Characteristics (fs= 192 kHz) ........................................................................................ 14
■ ADC Filter Characteristics (fs= 384 kHz) ........................................................................................ 16
■ ADC Filter Characteristics (fs= 768 kHz) ........................................................................................ 17
10. DC Characteristics ........................................................................................................................ 18
11. Switching Characteristics .............................................................................................................. 19
■ Timing Diagram ............................................................................................................................... 26
12. Functional Descriptions................................................................................................................. 31
■ Digital Core Power Supply............................................................................................................... 31
■ Output Mode .................................................................................................................................... 31
■ Master Mode and Slave Mode......................................................................................................... 31
■ System Clock ................................................................................................................................... 31
■ Audio Interface Format .................................................................................................................... 34
■ Channel Summation (PCM mode, DSD mode) .............................................................................. 46
■ Optimal Data Placement (PCM mode, DSD mode) ........................................................................ 46
■ CH Power Down & Channel Summation Setting (PCM mode, DSD mode) .................................. 47
■ Digital HPF (PCM mode) ................................................................................................................. 53
■ Overflow Detection (PCM mode, DSD mode)................................................................................. 53
■ LDO .................................................................................................................................................. 54
■ Reset................................................................................................................................................ 54
■ Power Up/Down Sequence ............................................................................................................. 55
■ Operation Mode Control .................................................................................................................. 58
■ Register Control Interface................................................................................................................ 58
■ Register Map.................................................................................................................................... 62
■ Register Definitions.......................................................................................................................... 62
13. Recommended External Circuits .................................................................................................. 65
14. Package......................................................................................................................................... 68
■ Outline Dimensions.......................................................................................................................... 68
■ Material & Lead Finish ..................................................................................................................... 68
■ Marking ............................................................................................................................................ 68
15. Ordering Guide.............................................................................................................................. 69
16. Revision History ............................................................................................................................ 69
IMPORTANT NOTICE ........................................................................................................................... 70
015016736-E-00
-2-
2015/12
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상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
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