Audio A/D Converters

AKM’s audio A/D converters (ADCs) realizes high quality sound audio systems with original analog-digital mixed technology that delivers high integration and designing flexibility.

They are suitable for wide range of audio products such as portable devices, high-end equipments and car entertainment systems.

The History of AKM's A/D Converters

Revolutionizing ADCs since 1987

AKM released their first-generation delta-sigma A/D converter (ADC) in 1987.

The quality of AKM's ADC solutions soon piqued the interest of the audio industry, and they followed up in 1992 with a world-class fifth-order delta-sigma A/D converter.

In 1996, AKM introduced its 2-2 Cascade Connection technology, which further enhanced ADC performance. 

Since then, AKM has consistently provided first-class ADCs with advanced features such as low power consumption, multi-bit delta-sigma modulation, and AKM's original bi-directional DWA (Data Weighted Average) technology. 

A worldwide leader in the field of cutting-edge audio capture, AKM has consistently improved conversion resolution, from the first generation of 16-bit devices to 18-, 24-, and now 32-bit ADCs, and has increased sampling frequencies from 48kHz to 768kHz.

The VELVET SOUND brand launched in 2014, bringing with it a new generation of chip architecture.

The first VELVET SOUND product, the flagship VERITA AK5397 ADC, was released with an unmatched SNR of 127dB. 

In 2016, the premium high-end AK557x series and premium AK555x series were released, each with 2-, 4-, 6-, and 8-channel variants. 

In total, nine products are available in the premium 32-bit ADC lineup.

AKM’s years of experience in the audio industry have enabled them to create advanced solutions that have been adopted by well-established companies around the world, across products ranging from consumer applications to the high-end market.

6ch A/D Converter for Microphones suitable for automotive active noise cancellation

AK5736VN

AKM has developed a 6ch A/D converter, the AK5736 for microphones in Active Noise Cancellation, systems implemented in car audio.

The AK5736 features the low latency of 4.3 [1/fs] required for high speed processing with built-in capability to supply microphone power internally.

The AK5736 also has a diagnostic function to monitor microphone connection. As a new feature, the AK5736 has an analog gain circuit setting to set a high gain level thus keeping high.

Lineup

Audio A/D Converters

Part Number
Part Status
Number of 
Channels
Analog 
Output 
Type
Bits
[bit]
Max fs
[kHz]
THD+N
[dB]
S/N
[dB]
Power Supply 
Voltage (MIN.)
[V]
Power Supply 
Voltage (TYP.)
[V]
Power Supply 
Voltage (MAX.)
[V]
PLL
Microphone 
Amplifier
Other
Operating Temperature [℃]
Device Package
Number of Pins
AK5536VN
MP
6
Differential
32
768
-103
111(118*)
3.0
3.3
3.6

                                

                                
VELVETSOUND, Automotive grade
-40 to 105
HVQFN
64
AK5552VN
MP
2
Differential
32
768
-106
115(118*)
4.5
5.0
5.5

                                

                                
VELVETSOUND, Automotive grade
-40 to 105
HVQFN
48
AK5730VQ
MP
4
Single/Differential
24
48
-92
100
3

                                
3.6

                                
Yes
Mic-diagnostics, Cascade TDM I/F, Automotive grade
-40 to 105
LQFP
48
AK5736VN
MP
6
Differential / Single
24
192
-92
100
3

                                
3.6

                                
Yes
Mic-diagnostics, Cascade TDM I/F, Automotive grade
-40 to 105
HVQFN
48
AK5574EN
MP
4
Differential
32
768
-112
121(127*)
4.75
5.00
5.25

                                

                                
VELVETSOUND
-40 to 85
HVQFN
48
AK5720VT
MP
2
Single
24
96
-94
102
2.7

                                
5.5

                                
Yes
Cascade TDM I/F, Short Group Delay, Automotive grade
-40 to 105
TSSOP
16
AK5704EN
NEW
4
Single / Differential
32
192
-90
105
1.7 / 3.0

                                
1.9 / 3.6
Yes
Yes
VAD, ALC, Cascade TDM I/F
-40 to 85
HWQFN
28
AK5556VN
MP
6
Differential
32
768
-106
115(122*)
4.5
5.0
5.5

                                

                                
VELVETSOUND, Automotive grade
-40 to 105
HVQFN
64
AK5534VN
MP
4
Differential
32
768
-103
111(117*)
3.0
3.3
3.6

                                

                                
VELVETSOUND, Automotive grade
-40 to 105
HVQFN
48
AK5558VN
MP
8
Differential
32
768
-106
115(124*)
4.5
5.0
5.5

                                

                                
VELVETSOUND, Automotive grade
-40 to 105
HVQFN
64
AK5538VN
MP
8
Differential
32
768
-103
111(120*)
3.0
3.3
3.6

                                

                                
VELVETSOUND, Automotive grade
-40 to 105
HVQFN
64
AK5578EN
MP
8
Differential
32
768
-112
121(130*)
4.75
5.00
5.25

                                

                                
VELVETSOUND
-40 to 85
HVQFN
64
AK5522VN
MP
2
Single/Differential
32
192
-98
108
4.5/3.0
5.0/3.3
5.5/3.6
Yes
Yes
VELVETSOUND, Automotive grade
-40 to 105
HWQFN
24
AK5397EQ
MP
2
Differential
32
768
-108
127(130*)

                                
5.0/3.3

                                

                                

                                
VELVETSOUND
-10 to 70
LQFP
44
AK5576EN
MP
6
Differential
32
768
-112
121(128*)
4.75
5.00
5.25

                                

                                
VELVETSOUND
-40 to 85
HVQFN
64
AK5701KN
MP
2
Single/Differential
16
48
-78
89
2.4
3.0
3.6
Yes
Yes
Automotive grade
-40 to 85
HWQFN
24
AK5572EN
MP
2
Differential
32
768
-112
121(124*)
4.75
5.00
5.25

                                

                                
VELVETSOUND
-40 to 85
HVQFN
48
AK5374EN
MP
2
Differential
24
48
-85
91
3

                                
3.6
Yes
Yes

                                
-10 to 70
HWQFN
36
AK5554VN
MP
4
Differential
32
768
-106
115(121*)
4.5
5.0
5.5

                                

                                
VELVETSOUND, Automotive grade
-40 to 105
HVQFN
48
AK5703EN
MP
4
Single /  Differential
24
48
-85
96
2.4
3.0
3.6
Yes
Yes
ALC, Cascade TDM I/F
-30 to 85
HWQFN
28

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