AKD5393_05 Datasheet, PDF (18/23 Pages) Asahi Kasei Microsystems – professional audio 24bit A/D converter

ASAHI KASEI
[AKD5393 Rev.A]
Revision History
Date
(YY/MM/DD)
98/08/18
00/05/29
Manual
Revision
KM059100
KM059101
Board
Reason
Revision
0 First Edition
3 Circuit Change
05/12/06 KM059102 4 Circuit Change
Contents
[1] Value Change:
(1) Resistance: R1, R5, R13, R21: 1.5KOhmÆ 910Ohm
(2) Resistance: R3, R8, R16, R22: 4.7KOhmÆ 3KOhm
(3) Resistance: R4, R9, R17, R23: 51OhmÆ 22Ohm
(4) Capacitance: C3, C13, C18, C26: 470pF Æ 110pF
Æ 470pF (Re-change)
(5) Capacitance: C6, C24: 2.2nF Æ 22nF Æ 10nF
(Re-change)
(6) Inductance: L1: Non-implement Æ Short
[2] Remake to separate TEST pin from digital ground
(1) Cut the pattern of digital ground connected to No.20
pin (TEST pin) of U5 (AK5393) on L1 layer, just in
front of the pin.
[3] Remake to change a part of pattern of digital ground to
analog ground:
(1) Cut the pattern of digital ground on L2 layer, at 2
points.
(2) Connect the floating pattern to analog ground on L2
layer, by solder.
[4] Remakes around OP-Amps of Input Buffers:
(1) Cut the pattern between R1 (910Ohm) and R4
(22Ohm) around the OP-Amp U3 (NJM5532D).
(2) Cut the pattern between R5 (910Ohm) and R9
(22Ohm) around the OP-Amp U3 (NJM5532D).
(3) Cut the pattern between R13 (910Ohm) and R17
(22Ohm) around the OP-Amp U8 (NJM5532D).
(4) Cut the pattern between R21 (910Ohm) and R23
(22Ohm) around the OP-Amp U8 (NJM5532D).
(5) Connect R1 (910Ohm) to No.7 pin of OP-Amp U3
(NJM5532D).
(6) Connect R5 (910Ohm) to No.1 pin of OP-Amp U3
(NJM5532D).
(7) Connect R13 (910Ohm) to No.7 pin of OP-Amp U8
(NJM5532D).
(8) Connect R21 (910Ohm) to No.1 pin of OP-Amp U8
(NJM5532D).
[1] Value Change:
(1) Capacitance: C55, C56: (Open) Æ 5p
<KM059102>
2005/12