[AK5552]
= Preliminary =
AK5552
115dB 768kHz 32-bit 2ch ADC with 4Filters
1. General Description
The AK5552 is a 32bit, 768kHz sampling, differential input A/D converter for digital audio systems. It
integrates an 2-channel A/D converter, suitable for mixers and automotive amplifier units. The AK5552 achieves
115dB dynamic range, 106dB S/(N+D) and 118dB dynamic range in Mono mode while keeping low power
consumption performance. Four types of digital filters are selectable according to the application. The AK5552
can be easily connected to a DSP by supporting TDM audio formats.
2. Features
Sampling Rate: 8kHz 768kHz
Full Differential Inputs
32Bit Digital Filter
- Sharp Roll-Off Filter
- Slow Roll-Off Filter
- Short Delay Sharp Roll-Off Filter
- Short Delay Slow Roll-Off Filter
S/(N+D): 106dB
DR, S/N: 115dB (Mono Mode: 118dB)
Digital HPF
Power Supply: 4.75~ 5.25V(Analog), 1.7~1.98V or 3.0 3.6V(Digital)
Output Format: 24/32bit MSB justified, I2S or TDM
Cascade TDM I/F: 16ch/48kHz, 8ch/96kHz, 4ch/192kHz
DSD (64fs, 128fs, 256fs) Output Data
Master & Slave Modes
Overflow Flag
3-wire Serial and I2C μP I/F
Power Consumption: 65.7mW (@AVDD=5.0V, TVDD=3.3V, fs=48kHz)
Package: 48-pin QFN
Rev. 0.0
2014/06
-1-
[AK5552]
VREFL1
VREFH1
3. Block Diagram
TVDD LDOE VDD18 DVSS
LDO
Voltage
Reference
AIN1P
AIN1N
Delta-Sigma
Modulator
Decimation
Filter
HPF
AIN2P
AIN2N
Delta-Sigma
Modulator
Decimation
Filter
HPF
Serial
Output
Interface
PS/CAD0_SPI
CKS0/SDA/CDTI
CKS1/CAD0_I2C/CSN
CKS2/SCL/CCLK
CKS3/CAD1
Controller
AVDD
AVSS
PDN
MCLK
TEST1-2
DFIL0-1
DIF0/DSDSEL0
DIF1/DSDSEL1
BICK/DCLK
LRCK/DSDOL1
TDMIN/DSDOR1
SDTO1
DP
TDM0
TDM1
PW0-2
MSN
OVF
HPFE
I2C
Figure 1. Block Diagram
Rev. 0.0
2014/06
-2-
[AK5552]
4. Absolute Maximum Ratings
(VSS=0V; Note 1)
Parameter
Symbol
Min.
Max.
Unit
Power
Analog (AVDD pin)
AVDD
−0.3
6.0
V
Supplies
Digital (TVDD pin)
TVDD
−0.3
4.0
V
Digital (VDD18 pin) (Note 2)
VDD18
−0.3
2.5
V
Input Current (Any Pin Except Supplies)
IIN
10
mA
Analog Input Voltage (AIN1~8P, AIN1-8N pins)
VINA
−0.3
AVDD+0.3
V
Digital Input Voltage
VIND
−0.3
TVDD+0.3
V
Ambient Temperature (Power applied)
When the back tab is connected to VSS
Ta
−40
105
C
When the back tab is open
Ta
−40
85
Storage Temperature
Tstg
−65
150
C
Note 1. All voltages with respect to ground.
Note 2. The 1.8V LDO is off (LDOE pin = “L”) and an external power is supplied to the VDD18 pin.
WARNING: Operation at or beyond these limits may result in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
5. Recommended Operation Conditions
(VSS=0V; Note 1)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Analog
(AVDD
pin)
AVDD
4.75
5.0
5.25
V
Power
Supplies
(LDOE pin= “L”)
(Note 3)
IO Buffer (TVDD pin) (Note 4)
TVDD
1.7
1.8
1.98
V
Digital Core (VDD18 pin)
VDD18
1.7
1.8
1.98
V
(LDOE pin= “H”)
(Note 5)
IO Buffer (TVDD pin)
TVDD
3.0
3.3
3.6
V
Voltage
“H” voltage Reference (Note 6)
VREFH1-4
4.75
5.0
5.25
V
Reference
“L” voltage reference
VREFL1-4
AVSS
V
(Note 7)
Note 1. All voltages with respect to ground.
Note 3. TVDD must be powered up before VDD18 when the LDOE pin = “L”. The power up sequence between
AVDD and TVDD or AVDD and VDD18 is not critical.
Note 4. TVDD must not exceed VDD18±0.1V when LDOE pin= “L”.
Note 5. When LDOE pin = “H”, the internal LDO supplies 1.8V (typ). The power up sequences between AVDD
and TVDD is not critical.
Note 6. VREFH1~4 pin must not exceed AVDD+0.1V.
Note 7. VREFL1-4 pins must be connected to AVSS.
Analog Input Voltage is proportional to {(VREFH) – (VREFL)}.
Vin (typ, @ 0dB) = 2.8 {(VREFH) – (VREFL)} / 5 [V].
* AKM assumes no responsibility for the usage beyond the conditions in this data sheet.
Rev. 0.0
2014/06
-3-
[AK5552]
6. Analog Characteristics
(Ta=25C; AVDD=5.0V; TVDD=3.3V, fs=48kHz, 96kHz; BICK=64fs; Signal Frequency=1kHz; 24bit Data;
Measurement frequency=20Hz20kHz at fs=48kHz, 40Hz40kHz at fs=96kHz, 40Hz40kHz at fs=192kHz,
unless otherwise specified.)
Parameter
Min.
Typ.
Max.
Unit
Analog Input Characteristics:
Resolution
32
Bits
Input Voltage
(Note 8)
2.7
2.8
2.9
Vpp
1dBFS
100
106
dB
S/(N+D)
fs=48kHz
20dBFS
92
dB
BW=20kHz
60dBFS
52
dB
1dBFS
106
dB
fs=96kHz
20dBFS
89
dB
BW=40kHz
60dBFS
49
dB
1dBFS
106
dB
fs=192kHz
20dBFS
89
dB
BW=40kHz
60dBFS
49
dB
Dynamic Range
Stereo Mode
110
115
dB
(60dBFS with A-weighted)
Mono Mode
118
S/N
Stereo Mode
110
115
dB
(A-weighted)
Mono Mode
118
Input Resistance
3.0
3.5
4.1
k
Interchannel Isolation
110
120
dB
Interchannel Gain Mismatch
0
0.5
dB
Power Supply Rejection
(Note 9)
60
dB
Power Supplies
Power Supply Current
Normal Operation (PDN pin = “H”)
AVDD
11.6
TBD
mA
TVDD
(fs=48kHz)
4.25
TBD
mA
TVDD
(fs=96kHz)
TBD
TBD
mA
TVDD
(fs=192kHz)
TBD
TBD
mA
Power down mode (PDN pin = “L”) (Note 10)
AVDD+TVDD
10
100
A
Note 8. This value is (AINnP)(AINnN) that the ADC output becomes full-scale (n=1~8). Input voltage is
proportional to VREFHVREFL.
Vin = 0.56 (VREFHmVREFLm) [Vpp]. (m=1~4)
Note 9. PSRR is applied to AVDD, TVDD with 1kHz, 20mVpp sine wave. The VREFH1~4 pins are held to the
same voltage.
Note 10. All digital inputs are fixed to TVDD or TVSS.
Rev. 0.0
2014/06
-4-
[AK5552]
IMPORTANT NOTICE
0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the information
contained in this document without notice. When you consider any use or application of AKM product
stipulated in this document (“Product”), please make inquiries the sales office of AKM or authorized
distributors as to current status of the Products.
1. All information included in this document are provided only to illustrate the operation and application
examples of AKM Products. AKM neither makes warranties or representations with respect to the
accuracy or completeness of the information contained in this document nor grants any license to any
intellectual property rights or any other rights of AKM or any third party with respect to the
information in this document. You are fully responsible for use of such information contained in this
document in your product design or applications. AKM ASSUMES NO LIABILITY FOR ANY
LOSSES INCURRED BY YOU OR THIRD PARTIES ARISING FROM THE USE OF SUCH
INFORMATION IN YOUR PRODUCT DESIGN OR APPLICATIONS.
2. The Product is neither intended nor warranted for use in equipment or systems that require
extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may
cause loss of human life, bodily injury, serious property damage or serious public impact, including but
not limited to, equipment used in nuclear facilities, equipment used in the aerospace industry, medical
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Product for the above use unless specifically agreed by AKM in writing.
3. Though AKM works continually to improve the Product’s quality and reliability, you are responsible
for complying with safety standards and for providing adequate designs and safeguards for your
hardware, software and systems which minimize risk and avoid situations in which a malfunction or
failure of the Product could cause loss of human life, bodily injury or damage to property, including
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4. Do not use or otherwise make available the Product or related technology or any information contained
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technology may not be used for or incorporated into any products or systems whose manufacture, use,
or sale is prohibited under any applicable domestic or foreign laws or regulations.
5. Please contact AKM sales representative for details as to environmental matters such as the RoHS
compatibility of the Product. Please use the Product in compliance with all applicable laws and
regulations that regulate the inclusion or use of controlled substances, including without limitation, the
EU RoHS Directive. AKM assumes no liability for damages or losses occurring as a result of
noncompliance with applicable laws and regulations.
6. Resale of the Product with provisions different from the statement and/or technical features set forth in
this document shall immediately void any warranty granted by AKM for the Product and shall not
create or extend in any manner whatsoever, any liability of AKM.
7. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior
written consent of AKM.
Rev. 0.0
2014/06
-5-