AK4319AVM AKM [Asahi Kasei Microsystems], AK4319AVM Datasheet

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AK4319AVM

Manufacturer Part Number
AK4319AVM
Description
18Bit SCF DAC
Manufacturer
AKM [Asahi Kasei Microsystems]
Datasheet

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ASAHI KASEI
The AK4319A is a high performance 1bit stereo DAC for digital audio systems. A 1bit DAC can achieve
monotonicity and low distortion with no adjustment. On chip SCF filter makes the device less affected to the
clock jitter and also suppresses the undesirable radio emission noise. The device equips differentially
configurated output pins, but either of the pins can be used as single-end. The AK4319A achieves lower Out-
band noise characteristic and it is suitable for digital broadcasting tuner and other digital audio applications.
M0011-E-01
Sampling Rate Ranging from 8kHz to 54kHz
128 times Oversampling
18bit 8 times Digital Filter
2nd order SCF with High Tolerance to Clock Jitter
Differential outputs(Single-end use is available)
Digital de-emphasis for 32, 44.1, 48kHz sampling
Soft mute
I/F format : MSB justified, LSB justified, IIS
THD+N: -87dB
DR: 92dB
Master Clock: 256fs or 384fs
Power supply: 4.5 to 5.5V
Small Package: 24pin SSOP
AK4319 Compatible
General Description
Features
- 1 -
18Bit SCF DAC
AK4319A
[AK4319A]
1998/6

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AK4319AVM Summary of contents

Page 1

ASAHI KASEI The AK4319A is a high performance 1bit stereo DAC for digital audio systems. A 1bit DAC can achieve monotonicity and low distortion with no adjustment. On chip SCF filter makes the device less affected to the clock jitter ...

Page 2

... ASAHI KASEI Ordering Guide AK4319AVM AKD4319A Pin Layout Different Points from AK4319 Parameter fs(min) THD+N DR S/N M0011-E-01 -40 +85 C 24pin SSOP(0.65mm pitch) Evaluation Board AK4319 AK4319A 10kHz 8kHz -90dB -87dB 96dB 92dB 96dB 92dB - 2 - [AK4319A] 1998/6 ...

Page 3

ASAHI KASEI No. Pin Name I/O 1 DIF1 I Digital Input Format Pin 2 DVDD - Digital Power Supply 3 DVSS - Digital Ground Pin 4 LRCK I L/R Clock Pin 5 BICK I Audio Serial Data Clock Pin 6 ...

Page 4

ASAHI KASEI (AVSS,DVSS=0V; Note 1 ) Parameter Power Supplies: Analog Digital DVDD-AVDD Input Current, Any Pin Except Supplies Input Voltage Ambient Operating Temperature Storage Temperature Note All voltages with respect to ground.. WARNING: Operation at or beyond these ...

Page 5

ASAHI KASEI (Ta=25 C; AVDD,DVDD=5.0V; fs=44.1kHz; BICK=64fs; Signal Frequency=1kHz; 18bit Input Data; Measurement Bandwidth=10Hz 20kHz; R Parameter Resolution Dynamic Characteristics THD+N (0dB Output) Dynamic Range (-60dB Output, A weight) S/N (A weight) Interchannel Isolation(1kHz) Interchannel Gain Mismatch DC Accuracy Gain ...

Page 6

ASAHI KASEI (Ta=25 C; AVDD,DVDD=4.5V 5.5V; fs=44.1kHz; DEM0="1",DEM1="0") Parameter Digital Filter Passband ±0.06dB (Note 7 ) -6.0dB Stopband (Note 7 ) Passband Ripple Stopband Attenuation Group Delay (Note 8 ) Digital Filter + SCF Frequency Response 0 20.0kHz Note: 7. ...

Page 7

ASAHI KASEI (Ta=25 C; AVDD,DVDD=4.5 5.5V; C Parameter Master Clock Timing Crystal Resonator 256fs: 384fs: External Clock 256fs: Pulse Width Low Pulse Width High 384fs: Pulse Width Low Pulse Width High LRCK Frequency Duty Cycle Serial Interface Timing BICK Period ...

Page 8

ASAHI KASEI Timing Diagram M0011-E-01 Reset Timing - 8 - [AK4319A] 1998/6 ...

Page 9

ASAHI KASEI System Clock The external clocks which are required to operate the AK4319A are XTI, LRCK, BICK. The master clock(XTI) should be synchronized with LRCK but the phase is not critical. The XTI is used to operate the digital ...

Page 10

ASAHI KASEI Audio Serial Interface Format Data is shifted in via the SDATA pin using BICK and LRCK inputs. Four serial data modes can be selected by the DIF0 and DIF1 pins as shown in Table all ...

Page 11

ASAHI KASEI De-emphasis filter The AK4319A includes the digital de-emphasis filter(tc=50/15us) by IIR filter. This filter corresponds to three sampling frequencies(32kHz,44.1kHz,48kHz). De-emphasis is enabled by the following two ways. Zero detection After the input data at both channels are continuously ...

Page 12

ASAHI KASEI Power-Down The AK4319A are placed in the power-down mode by bringing PD pin "L" and the analog outputs are floating(Hi-Z). Figure 7 shows an example of the system timing at the power-down and power-up. Analog output has the ...

Page 13

ASAHI KASEI Figure 8 shows the system connection diagram. An example of external analog filter is shown in Figure evaluation board[AKD4319A] is available in order to allow an easy study on the layout of a surrounding circuit. ...

Page 14

ASAHI KASEI 2. Voltage reference The on-chip voltage reference is output on the VREF pin. An electrolytic capacitor smaller than 10uF in parallel with a 0.1uF ceramic capacitor attached to this pin eliminates the effects of high frequency noise. Especially, ...

Page 15

ASAHI KASEI 4. Single-end usage The load impedance for the output pin should be higher than 5k . When the AK4319A drives some capacitive load, series resistor(220ohm or more than) should be added the analog output and it should be ...

Page 16

ASAHI KASEI 24pin SSOP (Unit: mm) NOTE: Dimension “*” does not include mold flash. Package & Lead frame material Package molding compound: Lead frame material: Lead frame surface treatment: M0011-E-01 PACKAGE Epoxy Cu Solder plate - 16 - [AK4319A] 1998/6 ...

Page 17

ASAHI KASEI M0011-E-01 MARKING Contents of AAXXXX AA: Lot# XXXX: Date Code - 17 - [AK4319A] 1998/6 ...

Page 18

IMPORTANT NOTICE These products and their specifications are subject to change without notice. Before considering any use or application, consult the Asahi Kasei Microsystems Co., Ltd. (AKM) sales office or authorized distributor concerning their current status. AKM assumes no liability ...

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