AK4309BVM AKM [Asahi Kasei Microsystems], AK4309BVM Datasheet

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AK4309BVM

Manufacturer Part Number
AK4309BVM
Description
16BIT SCF DAC FOR MULTIMEDIA
Manufacturer
AKM [Asahi Kasei Microsystems]
Datasheet

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ASAHI KASEI
The AK4309B is a 1bit stereo DAC for multimedia audio systems. A 1bit DAC can achieve monotonicity and
low distortion with no adjustment and is superior to traditional R-2R ladder based DACs. In the AK4309B, the
loss of accuracy from clock jitter is also improved by using SCF techniques for on-chip post filter. The
AK4309B includes continuous time filter with single end output and does not need any external parts. The
master clock can be either 256fs or 384fs, supporting various audio environment.
0177-E-00
TTL Level Digital Interface
THD+N: -84dB
Sampling Rate Ranging from 8kHz to 50kHz
On chip Perfect filtering
On chip Buffer with Single End Output
Master Clock: 256fs or 384fs
High Tolerance to Clock Jitter
Dynamic Range: 90dB
Output Level: 3.4Vpp
Power Supply: 5V±10%
Low Power Dissipation: 80mW at 5V
Small Package: 20pin SSOP
Pin Compatible with AK4310/4309A
8 times FIR Interpolator
2nd order SCF and CTF
Total Response: ±0.5dB at 20kHz
General Description
Features
- 1 -
16Bit SCF DAC for Multimedia
AK4309B
[AK4309B]
1997/6

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AK4309BVM Summary of contents

Page 1

ASAHI KASEI The AK4309B is a 1bit stereo DAC for multimedia audio systems. A 1bit DAC can achieve monotonicity and low distortion with no adjustment and is superior to traditional R-2R ladder based DACs. In the AK4309B, the loss of ...

Page 2

... ASAHI KASEI Ordering Guide AK4309BVM AKD4309B Pin Layout Compatibility with AK4310/09A Parameter Power Supply Digital I/F level DR Output Voltage Click Noise Function of Pin 4 Package 0177-E-00 C -10 +70 20pin SSOP(0.65mm pitch) Evaluation Board (AK4309B's board is the same as AK4310's) AK4310 AK4309A 3 5.5V 4.5 5.5V CMOS TTL 92dB 91dB 2 ...

Page 3

ASAHI KASEI No. Pin Name I/O 1 TST1 I Test Pin Must be left floating or tied to DVSS. 2 DVDD - Digital Power Supply Pin 3 DVSS - Digital Ground Pin Connection RST 5 I ...

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= AVDD,DVDD=5.0V; VREFH=AVDD,VREFL=AVSS; fs=44.1kHz; Signal Frequency=1kHz; Measurement Bandwidth=10Hz 20kHz; R Parameter Resolution Dynamic Characteristics (Note 4 ) THD+N (0dB Output) Dynamic Range (-60dB Output, A weight) S/N (A weight) Interchannel Isolation(1kHz) DC Accuracy Interchannel Gain Mismatch ...

Page 6

ASAHI KASEI (Ta= AVDD,DVDD=4.5V 5.5V; fs=44.1kHz) Parameter Digital Filter Passband -0.2dB (Note 9 ) -6.0dB Stopband (Note 9 ) Passband Ripple Stopband Attenuation Group Delay (Note 10 ) Digital Filter + SCF + CTF Frequency Response 0 20.0kHz ...

Page 7

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

Page 8

ASAHI KASEI Timing Diagram 0177-E- [AK4309B] 1997/6 ...

Page 9

ASAHI KASEI System Clock The external clocks which are required to operate the AK4309B are MCLK, LRCK, BICK. The master clock(MCLK) should be synchronized with LRCK but the phase is not critical. The MCLK is used to operate the digital ...

Page 10

ASAHI KASEI Zero detection When the input data at both channels are continuously zeros for 8192 LRCK cycles, DZF goes to "H". DZF immediately goes "L" if input data are not zero after going DZF "H". System Reset The AK4309B ...

Page 11

ASAHI KASEI 1. Grounding and Power Supply Decoupling To minimize coupling by digital noise, decoupling capacitors should be connected to AVDD and DVDD, respectively. AVDD is supplied from analog supply in system and DVDD is supplied from AVDD via 10 ...

Page 12

ASAHI KASEI 20pin SSOP (Unit: mm) NOTE: Dimension “*” does not include mold flash. Package & Lead frame material Package molding compound : Lead frame material : Lead frame surface treatment : Solder plate 0177-E-00 PACKAGE Epoxy ...

Page 13

ASAHI KASEI 0177-E-00 MARKING Contents of AAXXXX AA: Lot# XXXX: Date Code - 13 - [AK4309B] 1997/6 ...

Page 14

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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