[AK4213]
Receiver-AMP
Input Voltage: 1.13Vrms, Comm on Voltage=1.8V
3.9Ω
3.9Ω
RVINN pin
RVINP pin
AK4213
SW 1
SPK-AMP
ALC
SPN pin
SW 2
SPP pin
8Ω
Measurem ent point of
THD+N and Output Voltage
Figure 2. Connection with external RCV-Amp
AK4213
RVINP pin
DC Input Voltage: 3.6V
SW1
SPK-AMP
ALC
Measurement point of
Switch OFF Isolation
SPP pin
SPN pin
50Ω
50Ω
RVINN pin
DC Input Voltage: 3.6V
SW2
RVINP pin
50Ω
Measurement point of
Switch OFF Isolation
RVINN pin
50Ω
ALC
AK4213
SW1
SPK-AMP
SPP pin
SPN pin
DC Input Voltage: 3.6V
DC Input Voltage: 3.6V
SW2
Figure 3. Measurement Circuit of Switch OFF Isolation
Headphone-amp negative voltage
PVEE pin
C1
CN pin
Charge Pump Circuit
CP pin
VSS3
C2
Figure 4. Charge Pump Circuit External Capacitor
MS0949-E-01
-9-
2008/07
AKM [ ASAHI KASEI MICROSYSTEMS ]
