AK4201 Datasheet, PDF (11/13 Pages) Asahi Kasei Microsystems – Stereo Cap-less HP-Amp

CONFIDENTIAL
SYSTEM DESIGN
[AK4201]
Ci
Ri
Analog Input 0.22µ _20kΩ
Rf
30kΩ
Top View
1 LIN
RIN 12
2 LOUT
ROUT 11
Rf
30kΩ
Ri
Ci
20kΩ ^{0.22µ Analog Input}
Power Supply
4.5∼5.5V,
2.6∼3.6V
Power Supply
4.5∼5.5V,
2.6∼3.6V
10µ+ 0.1µ
10µ
0.1µ
+
3 AVDD
4 _VSS1
5 PVDD
6 CN
PVEE 10
VSS2 9
PDN 8
CP 7
1µ
(+)
DSP or μP
1µ (+)
Note:
1. The PDN pin should be held to “L” when powered-up. The PDN pin should be set to “H” after all power supplies are
powered-up. When power-down the AK4201, the PDN pin should be held to “L”.
Refer to “Power-Up/Down Sequence” to avoid pop noise when power-up/down the AK4201.
1) Power-Up
The power should be ON when the PDN pin = “L”. The PDN pin should be set to “H” 150ns after all power supplies
(AVDD, PVDD) are ON. 150ns “L” time or more is needed to reset the AK4201.
2) Power-Down
The AK4201 should be powered-down when the PDN pin = “L”.
2. 1uF~2.2uF ceramic capacitors (±35% including temperature characteristics and piece-to-piece variations)should be
connected to between the Cp and Cn pins, and the VSS1 and PVEE1 pins.
3. Both lines from the LIN pin and RIN pin to each Input resistance Ri and feedback resistance Rf should be short as
possible.
4. A capacitor should be connected to the each LIN and RIN pin for AC coupling.
Rev 0.2
- 11 -
2008/07