AK5384VF Asahi Kasei Microsystems, AK5384VF Datasheet

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AK5384VF

Manufacturer Part Number
AK5384VF
Description
107 DB 24 BIT 96KHZ 4 CHANNEL ADC
Manufacturer
Asahi Kasei Microsystems
Datasheet

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Part Number:
AK5384VF
Manufacturer:
AKM
Quantity:
20 000
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AK5384VF-E2
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AKM
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20 000
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AK5384VFP-E2
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The AK5384 is a 4-channel A/D Converter with wide sampling rate of 8kHz
Multi-channel audio system. The AK5384 achieves high accuracy and low cost by using Enhanced dual
bit
suitable for multi-channel audio system.
MS0225-E-00
techniques. The AK5384 supports master mode and TDM format. Therefore, the AK5384 is
LIN1+
LIN1-
RIN1+
RIN1-
LIN2+
LIN2-
RIN2+
RIN2-
VCOM
o 4-Channel
o Differential Inputs
o Digital HPF for DC-Offset Cancel
o S/(N+D): 100dB@5V for 48kHz
o DR:
o S/N:
o Sampling Rate Ranging from 8kHz to 96kHz
o Master Clock:
o TTL Digital Input Level
o Output format: 24bit MSB justified, I
o Cascade TDM Interface
o Master & Slave Mode
o Overflow Flag
o Power Supply: 4.75 to 5.25V
o Power Supply for output buffer: 3.0 to 5.25V
o Ta = 40
o 28pin VSOP
Voltage Reference
AVDD
Modulator
Modulator
Modulator
Modulator
256fs/384fs/512fs/768fs ( 48kHz)
256fs/384fs
AVSS
107dB@5V for 48kHz
107dB@5V for 48kHz
85 C
OVF
GENERAL DESCRIPTION
ADC
DVDD
107dB 24-Bit 96kHz 4-Channel ADC
FEATURES
PDN
( 96kHz)
Decimation
Decimation
Decimation
Decimation
- 1 -
DVSS
Filter
Filter
Filter
Filter
CKS
TVDD
2
Clock Divider
S or TDM
Interface
Audio
96kHz and is suitable for
LRCK
BICK
SDTO1
SDTO2
TDMIN
M/S
DIF
TDM0
TDM1
MCLK
AK5384
2003/05

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AK5384VF Summary of contents

Page 1

The AK5384 is a 4-channel A/D Converter with wide sampling rate of 8kHz Multi-channel audio system. The AK5384 achieves high accuracy and low cost by using Enhanced dual bit techniques. The AK5384 supports master mode and TDM format. Therefore, the ...

Page 2

... Ordering Guide AK5384VF AKD5384 n Pin Layout LIN2+ 1 LIN2- 2 RIN2+ 3 RIN2- 4 TEST 5 VCOM 6 AVSS 7 AVDD 8 DIF 9 TDM1 10 TDM0 11 TDMIN 12 MCLK 13 OVF 14 MS0225-E-00 40 +85 C 28pin VSOP (0.65mm pitch) Evaluation Board for AK5384 Top View - 2 - LIN1+ 28 LIN1- 27 RIN1+ 26 RIN1- 25 M/S 24 CKS 23 PDN 22 DVSS 21 DVDD ...

Page 3

ASAHI KASEI No. Pin Name I/O Function 1 LIN2+ I ADC2 Lch Positive Analog Input Pin 2 I ADC2 Lch Negative Analog Input Pin LIN2 3 RIN2+ I ADC2 Rch Positive Analog Input Pin 4 I ADC2 Rch Negative Analog ...

Page 4

DVSS=0V; Note 1) Parameter Power Supplies: Analog Digital Output buffer |AVSS – DVSS| Input Current, Any Pin Except Supplies Analog Input Voltage Digital Input Voltage (Except BICK, LRCK pins) (BICK, LRCK pins) Ambient Temperature (Powered applied) Storage Temperature Note ...

Page 5

ASAHI KASEI (Ta=25 C; AVDD=DVDD=TVDD=5.0V; AVSS=DVSS=0V; fs=48kHz, 96kHz; I/F format=Mode 0; Signal Frequency=1kHz; Measurement frequency=20Hz 20kHz at fs=48kHz, 40Hz 40kHz at fs=96kHz; unless otherwise specified) Parameter ADC Analog Input Characteristics: Resolution S/(N+D) ( 1dBFS) fs=48kHz fs=96kHz DR ( 60dBFS) fs=48kHz, ...

Page 6

ASAHI KASEI FILTER CHARACTERISTICS (fs=48kHz) (Ta=25 C; AVDD, DVDD=4.75 5.25V; TVDD=3.0 5.25V; fs=48kHz) Parameter ADC Digital Filter (Decimation LPF): Passband (Note 8) 0.005dB 0.02dB 0.06dB 6.0dB Stopband (Note 8) Passband Ripple Stopband Attenuation Group Delay (Note 9) Group Delay Distortion ...

Page 7

ASAHI KASEI (Ta=25 C; AVDD, DVDD=4.75 5.25V; TVDD=3.0 5.25V; C Parameter Master Clock Timing Master Clock 256fs: Pulse Width Low Pulse Width High 384fs: Pulse Width Low Pulse Width High 512fs: Pulse Width Low Pulse Width High 768fs: Pulse Width ...

Page 8

ASAHI KASEI Parameter Audio Interface Timing (Slave mode) Normal mode (TDM1=“L”, TDM0=“L”) BICK Period BICK Pulse Width Low Pulse Width High LRCK Edge to BICK “ ” BICK “ ” to LRCK Edge LRCK to SDTO1/2 (MSB) (Except I BICK ...

Page 9

ASAHI KASEI n Timing Diagram MCLK LRCK BICK MCLK LRCK BICK MS0225-E-00 1/fCLK tCLKH tCLKL 1/fs tBCK tBCKH tBCKL Clock Timing (TDM0 pin = “L”) 1/fCLK tCLKH tCLKL 1/fs tLRH tLRL tBCK tBCKH tBCKL Clock Timing (TDM0 pin = “H”) ...

Page 10

ASAHI KASEI LRCK tBLR BICK tLRS SDTO Audio Interface Timing (Slave mode, TDM0 pin = “L”) LRCK tBLR BICK SDTO Audio Interface Timing (Slave mode, TDM0 pin = “H”) Note: SDTO shows SDTO1 and SDTO2. MS0225-E-00 tLRB tBSD tLRB tBSD ...

Page 11

LRCK tMBLR BICK SDTO PDN SDTO PDN Note: SDTO shows SDTO1 and SDTO2. MS0225-E-00 dBCK tBSD Audio Interface Timing (Master mode) tPDV tPD Power Down & Reset Timing - 11 - 50%TVDD 50%TVDD 50%TVDD VIH VIL 50%TVDD VIL 2003/05 ...

Page 12

System Clock The external clocks which are required to operate the AK5384 are MCLK(256fs/384fs/512fs/768fs), BICK(48fs ), LRCK(1fs) in slave mode (M/S pin = “L”). MCLK should be synchronized with LRCK but the phase is not critical. When 384fs, 512fs ...

Page 13

ASAHI KASEI Mode TDM1 TDM0 0 1 Normal TDM256 TDM128 N LRCK BICK(64fs) SDTO1/2( ...

Page 14

LRCK (Mode 7) LRCK (Mode5) BICK (256fs) SDTO1 BICK Figure 4. Mode 5, 7 Timing (TDM256 mode, I LRCK (Mode 10) LRCK (Mode 8) BICK (128fs) SDTO1 23 22 Figure 5. Mode 8, 10 Timing (TDM128 ...

Page 15

ASAHI KASEI n Digital High Pass Filter The ADC has a digital high pass filter for DC offset cancellation. The cut-off frequency of the HPF is 1.0Hz(@fs=48kHz) and scales with sampling rate (fs). n Overflow Detection The AK5384 has overflow ...

Page 16

ASAHI KASEI n Cascade TDM Mode The AK5384 supports cascading two devices in a daisy chain configuration at TDM256 mode. In this mode, SDTO2 pin of device #1 is connected to TDMIN pin of device #2. SDTO1 ...

Page 17

ASAHI KASEI Figure 10 shows the system connection diagram. An evaluation board is available which demonstrates application circuits, the optimum layout, power supply arrangements and measurement results. 0.1 2.2 0.1 10 Analog Supply 4.75 ~ 5.25V TDMIN ...

Page 18

ASAHI KASEI 1. Grounding and Power Supply Decoupling The AK5384 requires careful attention to power supply and grounding arrangements. AVDD and DVDD are usually supplied from the analog supply in the system. Alternatively if AVDD and DVDD are supplied separately, ...

Page 19

ASAHI KASEI 4. External Analog Inputs Circuit Figure 11 shows an input buffer circuit example 1. The input level of this circuit is 5.7Vpp (AK5384: typ. 2.9Vpp). Analog In 5.7Vpp 10k 22 VA Bias 10k 0.1 10 Bias 10k Figure ...

Page 20

ASAHI KASEI 28pin VSOP (Unit: mm) *9.8 0.2 0.675 28 1 0.22 0.1 Seating Plane NOTE: Dimension "*" does not include mold flash. n Material & Lead finish Package molding compound: Lead frame material: Lead frame surface treatment: MS0225-E-00 PACKAGE ...

Page 21

... AKM harmless from any and all claims arising from the use of said product in the absence of such notification. MS0225-E-00 MARKING AKM AK5384VF XXXBYYYYC XXXBYYYYC Date code identifier IMPORTANT NOTICE - 21 - ...

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