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AK4520A

Asahi Kasei Microsystems
Part Number AK4520A
Manufacturer Asahi Kasei Microsystems
Description 100dB 20Bit Stereo ADC/DAC
Published Mar 23, 2005
Detailed Description ASAHI KASEI [AK4520A] AK4520A 100dB 20Bit Stereo ∆Σ ADC & DAC General Description The AK4520 is a stereo CMOS A/D & D/...
Datasheet PDF File AK4520A PDF File

AK4520A
AK4520A

Overview
ASAHI KASEI [AK4520A] AK4520A 100dB 20Bit Stereo ∆Σ ADC & DAC General Description The AK4520 is a stereo CMOS A/D & D/A converter for middle-range MD/DAT, Surround System and musical instruments.
Signal inputs and outputs are single-ended.
The DAC outputs are analog filtered to remove out of band noise.
External components are minimized.
Features † ∆Σ Stereo ADC - 64x Oversampling - S/(N+D): 90dB at 5V, 86dB at 3V - Dynamic Range: 100dB at 5V, 96dB at 3V - S/N: 100dB at 5V, 96dB at 3V - Digital HPF for offset cancel † ∆Σ Stereo DAC - 128x Oversampling - 2nd order SCF + 2nd order CTF - Digital de-emphasis for 32kHz, 44.
1kHz, 48kHz sampling - S/(N+D): 90dB at 5V, 90dB at 3V - Dynamic Range: 100dB at 5V, 96dB at 3V - S/N: 100dB at 5V, 96dB at 3V † High Jitter Tolerance † Sample Rate Ranging from 16kHz to 54kHz † Master Clock: 256fs or 384fs † 2.
7 to 3.
6V or 4.
5 to 5.
5V supply † Low Power Dissipation: 255mW † Small 28pin VSOP Package 0163-E-00 -1- 1997/3 ASAHI KASEI „ Ordering Guide AK4520A-VF AKD4520 -10∼ +70° C 28pin VSOP AK4520A Evaluation Board [AK4520A] „ Pin Layout 0163-E-00 -2- 1997/3 ASAHI KASEI [AK4520A] PIN/FUNCTION No.
1 Pin Name VREFH I/O I Function Positive Voltage Reference Input Pin, VA Used as a positive voltage reference by ADC & DAC.
VREFH is connected externally to filtered VA.
Negative Voltage Reference Input Pin, AGND Used as a negative voltage reference by ADC & DAC.
VREFL is connected externally to AGND.
Rch Analog Positive Input pin Rch Analog Negative Input Pin Lch Analog Positive Input pin Lch Analog Negative Input Pin Analog Power Supply Pin Analog Ground pin Audio Data Interface Format Pin Audio Data Interface Format Pin Input/Output Channel Clock Pin Audio Serial Data Clock Pin Audio Serial Data Input Pin Audio Serial Data Output Pin Master Clock Input Pin De-emphasis Frequency Select Pin De-emphasis Frequency Select Pin Test Pins (Pull down pins) Must be left open or connected to DGND.
Digital Power Supply Pin Digital Ground Pi...


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