AK5357ET AKM [Asahi Kasei Microsystems], AK5357ET Datasheet

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AK5357ET

Manufacturer Part Number
AK5357ET
Description
24Bit 96kHz ?? ADC
Manufacturer
AKM [Asahi Kasei Microsystems]
Datasheets

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Part Number:
AK5357ET
Manufacturer:
AKM
Quantity:
20 000
Part Number:
AK5357ET-E2
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AKM
Quantity:
20 000
ASAHI KASEI
The AK5357 is a stereo A/D Converter with wide sampling rate of 4kHz ∼ 96kHz and is suitable for
multimedia audio system. The AK5357 achieves high accuracy and low cost by using Enhanced dual bit
∆Σ techniques. The AK5357 requires no external components because the analog inputs are
single-ended. The audio interface has two formats (MSB justified, I
systems like Karaoke, surround.
MS0294-E-01
VCOM
AINR
AINL
CKS2
Stereo ∆Σ ADC
Ta = −40 ∼ 85°C (VT), −20 ∼ 85°C (ET)
On-Chip Digital Anti-Alias Filtering
Single-ended Input
Digital HPF for DC-Offset cancel
S/(N+D):
DR:
S/N:
Sampling Rate Ranging from 4kHz to 96kHz
Master Clock:
Input level: TTL/CMOS selectable
Master / Slave Mode
Audio Interface: 24bit MSB justified / I
Power Supply: 2.7 ∼ 5.5V
Small 16pin TSSOP Package
AK5381 Pin-compatible
Voltage Reference
VA
∆Σ
Modulator
∆Σ
Modulator
256fs/384fs/512fs/768fs (4kHz ∼ 48kHz)
256fs/384fs
CKS1
AGND
102dB@5V, 100dB@3V for 48kHz
102dB@5V, 100dB@3V for 48kHz
88dB@5V, 86dB@3V for 48kHz
GENERAL DESCRIPTION
CKS0
VD
DGND
FEATURES
Decimation
Decimation
- 1 -
Filter
Filter
(48kHz ∼ 96kHz)
PDN
2
2
Clock Divider
S selectable
S) and can correspond to many
24Bit 96kHz ∆Σ ADC
Serial I/O
Interface
MCLK
DIF
AK5357
LRCK
SCLK
SDTO
[AK5357]
2006/01

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AK5357ET Summary of contents

Page 1

ASAHI KASEI The AK5357 is a stereo A/D Converter with wide sampling rate of 4kHz ∼ 96kHz and is suitable for multimedia audio system. The AK5357 achieves high accuracy and low cost by using Enhanced dual bit ∆Σ techniques. The ...

Page 2

... ASAHI KASEI Ordering Guide AK5357ET AK5357VT AKD5357 Pin Layout AINR AINL CKS1 VCOM AGND VA VD DGND Compatibility with AK5353 and AK5381 S/(N+D) DR Master Mode Not Available HPF OFF Not Available TTL Level Mode 4kHz to 96kHz VIH@TTL Level Mode 2.7 to 5.5V@fs=48kHz VA (Analog Supply) 4.5 to 5.5V@fs=96kHz VD (Digital Supply) 4 ...

Page 3

ASAHI KASEI No. Pin Name I/O 1 AINR I Rch Analog Input Pin 2 AINL I Lch Analog Input Pin 3 CKS1 I Mode Select 1 Pin Common Voltage Output Pin, VA/2 4 VCOM O Bias voltage of ADC input. ...

Page 4

... Note 1. All voltages with respect to ground. Note 3. The power up sequence between VA and VD is not critical. WARNING: AKM assumes no responsibility for the usage beyond the conditions in this datasheet. MS0294-E-01 ABSOLUTE MAXIMUM RATINGS Symbol VA VD ∆GND (Note 1) IIN VINA VIND AK5357ET Ta AK5357VT Ta Tstg Symbol min VA 2 [AK5357] ...

Page 5

ASAHI KASEI (Ta=25°C; VA=VD=5.0V; AGND=DGND=0V; fs=48kHz, 96kHz; SCLK=64fs; Signal Frequency=1kHz; 24bit Data; Measurement frequency=20Hz ∼ 20kHz at fs=48kHz, 40Hz ∼ 40kHz at fs=96kHz; unless otherwise specified) Parameter ADC Analog Input Characteristics: Resolution Input Voltage (Note 4) VA=5V S/(N+D) (−1dBFS) VA=3V ...

Page 6

ASAHI KASEI FILTER CHARACTERISTICS (fs=48kHz) (Ta=Tmin ∼ Tmax; VA, VD=2.7 ∼ 5.5V) Parameter ADC Digital Filter (Decimation LPF): (Note 9) ±0.1dB Passband −0.2dB −3.0dB Stopband Passband Ripple Stopband Attenuation Group Delay Distortion Group Delay (Note 10) ADC Digital Filter (HPF): ...

Page 7

ASAHI KASEI DC CHARACTERISTICS (CMOS Level Mode) (Ta=Tmin ∼ Tmax; VA, VD=2.7 ∼ 5.5V) Parameter High-Level Input Voltage Low-Level Input Voltage High-Level Output Voltage (Iout=−1mA) Low-Level Output Voltage (Iout=1mA) Input Leakage Current DC CHARACTERISTICS (TTL Level Mode) (Ta=Tmin ∼ Tmax; ...

Page 8

ASAHI KASEI (Ta=Tmin ∼ Tmax; VA, VD=2.7 ∼ 5.5V; C Parameter Master Clock Timing Frequency Pulse Width Low Pulse Width High LRCK Frequency Duty Cycle Slave mode Master mode Audio Interface Timing Slave mode SCLK Period SCLK Pulse Width Low ...

Page 9

ASAHI KASEI Timing Diagram MCLK tCLKH LRCK SCLK tSCKH LRCK tSHLR SCLK tLRS SDTO MS0294-E-01 1/fCLK tCLKL 1/fs tSCK tSCKL Clock Timing tLRSH tSSD Audio Interface Timing (Slave mode [AK5357] VIH VIL VIH VIL VIH VIL VIH ...

Page 10

ASAHI KASEI LRCK tMSLR SCLK SDTO PDN SDTO PDN MS0294-E-01 dSCK tSSD Audio Interface Timing (Master mode) tPDV tPD Power Down & Reset Timing - 10 - [AK5357] 50%VD 50%VD 50%VD VIH VIL 50%VD VIL 2006/01 ...

Page 11

ASAHI KASEI System Clock MCLK (256fs/384fs/512fs), SCLK and LRCK (fs) clocks are required in slave mode. The LRCK clock input must be synchronized with MCLK, however the phase is not critical. Table 1 shows the relationship of typical sampling frequency ...

Page 12

ASAHI KASEI LRCK BICK(64fs SDTO(o) 23:MSB, 0:LSB LRCK BICK(64fs SDTO(o) 23:MSB, 0:LSB Digital High Pass Filter The ADC has a digital high pass filter for DC offset cancellation. ...

Page 13

ASAHI KASEI Power down The AK5357 is placed in the power-down mode by bringing PDN pin “L” and the digital filter is also reset at the same time. This reset should always be done after power-up. In the power-down mode, ...

Page 14

ASAHI KASEI Figure 4 shows the system connection diagram. An evaluation board is available which demonstrates application circuits, the optimum layout, power supply arrangements and measurement results. 10u + Rch In + Lch In 10u 0.47u + Analog 5V 10u ...

Page 15

ASAHI KASEI 1. Grounding and Power Supply Decoupling The AK5357 requires careful attention to power supply and grounding arrangements. Alternatively if VA and VD are supplied separately, the power up sequence is not critical. AGND and DGND of the AK5357 ...

Page 16

ASAHI KASEI 16pin TSSOP (Unit: mm) *5.0±0 0.22 ± 0.1 0.13 M Seating Plane NOTE: Dimension "*" does not include mold flash. Material & Lead finish Package molding compound: Lead frame material: Lead frame surface treatment: MS0294-E-01 PACKAGE ...

Page 17

ASAHI KASEI MS0294-E-01 MARKING (AK5357VT) AKM 5357VT XXYYY Pin #1 indication 1) Date Code: XXYYY (5 digits) 2) XX: Lot# YYY: Date Code Marketing Code: 5357VT [AK5357] 2006/01 ...

Page 18

... ASAHI KASEI MS0294-E-01 MARKING (AK5357ET) AKM 5357ET XXYYY Pin #1 indication 4) Date Code : XXYYY (5 digits) 5) XX: Lot# YYY: Date Code Marketing Code : 5357ET [AK5357] 2006/01 ...

Page 19

... AKM harmless from any and all claims arising from the use of said product in the absence of such notification. MS0294-E-01 Revision History Reason Page Contents First Edition Spec Addition P.2 Ordering Guide AK5357ET was added. P.18 MARKING AK5357ET was added. IMPORTANT NOTICE - 19 - [AK5357] 2006/01 ...

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