AK7714VT Asahi Kasei Microsystems, AK7714VT Datasheet

AK7714VT

Manufacturer Part Number

AK7714VT

Description

20-Bit Audio Codec with DSP and Delay RAM

Manufacturer

Asahi Kasei Microsystems

Datasheet

1.AK7714VT.pdf (48 pages)

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Company:

Bonase Electronics (HK) Co., Limited

Part Number:

AK7714VT

Manufacturer:

MAX

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[ASAHI KASEI]

The AK7714 is a highly integrated audio processing IC with 20-bit stereo ADC and 4-channel DAC plus

on-chip DSP with 64-kbit delay RAM. The built-in ADC has a dynamic range of 99 dB with S/(N+D) of 92 dB,

and the DAC has a dynamic range of 98 dB with S/(N+D) of 89 dB, thereby ensuring high performances.

The AK7714 is compatible with each of the sampling frequencies of 48 kHz, 44.1 kHz or 32 kHz, and a

program of 512 steps (when sampling at 44.1 kHz or 32 kHz) can be executed in one sampling time. The

AK7714 is a programmable audio DSP containing RAM for delay. This allows sound field control programs to

be implemented for surround sound, echo 3D, parametric equalizer and the like.

Furthermore, the AK7714 uses a small 100-pin LQFP package, providing the optimum system for the sound

field of car audio equipment which is required to meet space saving requirements.

M0018-E-00

DSP:

ADC: 2 channels

DAC: 4 channels

Others

Word length:

Instruction cycle time:

Multiplier:

Divider:

ALU:

Shift+Register:

Program RAM:

Coefficient RAM: 384 x 16-bit

Data RAM:

Internal delay memory:

Sampling frequency:

Serial micro controller interface

Master clock:

Master/slave operation

Serial signal input port (2 to 6 ch), output port (2 to 6 ch) :

20-bit 64 x Over-sampling delta sigma

DR, S/N :

S/(N+D) :

Digital HPF (fc = 1 Hz)

20-bit 128 x Over-sampling delta sigma

DR, S/N :

S/(N+D) :

Power voltage:

Operating temperature range:

Package:

92 dB

89 dB

99 dB

98 dB

24 x 16

24 / 24

34-bit arithmetic operation (Overflow margin: 4 bits)

24-bit arithmetic and logic operation

512/384/256 fs (512 fs for sampling at 44.1 kHz or 32 kHz)

448 x 32-bit

128 x 24-bit

1, 2, 3, 4, 8 and 15 bits shifted left

1, 2, 3, 4, (6, 14), 8 and 15 bits shifted right

+ 5 V 5%

20-Bit Audio Codec with DSP and Delay RAM

General Description

4096 x 16-bit or 2048 x 24-bit

32 kHz to 48 kHz

40-bit

24-bit (Data RAM)

44.2 ns

16-bit

Features

-40 C to +85 C

( )Numbers in parentheses are restricted.

Provided with indirect shift function

100-pin LQFP (0.5 mm pitch)

- 1 -

16/20/24-bit

AK7714

[AK7714]

‘98/07

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