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AK4551VT Datasheet(PDF) 1 Page - Asahi Kasei Microsystems

Part # AK4551VT
Description  LOW POWER & SMALL PACKAGE 20BIT CODEC
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Manufacturer  AKM [Asahi Kasei Microsystems]
Direct Link  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AK4551VT Datasheet(HTML) 1 Page - Asahi Kasei Microsystems

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ASAHI KASEI
[AK4551]
MS0029-E-00
2000/5
- 1 -
GENERAL DESCRIPTION
The AK4551 is a low voltage 20bit A/D & D/A converter for portable digital audio system. In the AK4551,
the loss of accuracy form clock jitter is also improved by using SCF techniques for on-chip post filter.
Analog signal input/output of the AK4551 are single-ended, therefore, any external filters are not
required. The AK4551 is suitable for portable digital audio system, as the AK4551 is lower power
dissipation and a smaller package than AK4519.
FEATURES
o HPF for DC-offset cancel (fc=3.4Hz)
o Single-ended ADC
- S/(N+D): 82dB@VDD=2.5V
- Dynamic Range, S/N: 89dB@VDD=2.5V
o Single-ended DAC
- Digital de-emphasis for 32kHz, 44.1kHz, 48kHz sampling
- S/(N+D): 85dB@VDD=2.5V
- Dynamic Range, S/N: 92dB@VDD=2.5V
o Audio I/F format: MSB First, 2’s Compliment (AK4519 compatible)
- ADC: 20bit MSB justified
- DAC: 20bit LSB justified
o Input/Output Voltage: 0.6 X VDD (=1.5Vpp@VDD=2.5V)
o High Jitter Tolerance
o Sampling Rate: 8kHz to 50kHz
o Master Clock: 256fs or 384fs or 512fs
o Power Supply: 2.2 to 3.6V
o Low Power Supply Current: 10mA
o Ta = -20 to 85°C
o Very Small Package: 16pin TSSOP
Modulator
MCLK
VDD
VSS
AOUTL
AINL
LRCK
SCLK
VCOM
AINR
∆Σ
Modulator
Decimation
Filter
Serial I/O
Interface
Common Voltage
SDTO
∆Σ
Decimation
Filter
SDTI
PWDA
DEM0
PWAD
Clock
Divider
AOUTR
8X
Interpolator
8X
Interpolator
∆Σ
Modulator
∆Σ
Modulator
LPF
LPF
DEM1
Low Power & Small Package 20bit
∆Σ CODEC
AK4551


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