AK4635 AKM [Asahi Kasei Microsystems], AK4635 Datasheet - Page 9

• Manufacturer Part Number: AK4635
• Description: 16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

Note 8. Output voltage is proportional to AVDD voltage. Vout = 0.8 x AVDD (typ)
Note 9. Input voltage is proportional to AVDD voltage. Vin = 0.06 x AVDD (typ)
Note 10. When a PLL reference clock is FCK pin in PLL Slave Mode, S/ (N+D) of MIC ADC is 75dB (typ), S/ (N+D)
Note 11. Output voltage is proportional to AVDD voltage. Vout = 0.6 x AVDD (typ)@LOVL bit = “0”.
Note 12. The value after passing LPF (LPF : Passband is 20kHz or less, Stopband Attenuation@250kHz is –50dB or less)
Note 13. In case of measuring at between the SPP pin and SPN pin directly.
Note 14. Load impedance is total impedance of series resistance (R
Note 15. Maximum input voltage is in proportion to both AVDD and external input resistance (Rin). Vin = 0.6 x AVDD
Note 16. Output voltage is proportional to AVDD voltage. Vout = 0.6 x AVDD (typ).
Note 17. Input Voltage does not depend on AVDD voltage.
Note 18. Measurement point is A of
Note 19. In the case of using Sag Compensation Circuit with 47μF+ 4.7μF and SAGC bit = “1”
Note 20. R1 and C2 compose of Low Pass Filter (LPF) in
Rev. 0.6
VIN
0.345x AVDD(max)@MGAIN3-0 bits = “1001”
When the signal larger than above value is input to MICP or MICN pin, ADC does not operate normally.
of DAC AOUT is 75dB (typ).
x Rin/20kΩ (typ).
Figure
resistors should be connected at both SPP and SPN pins, respectively.
C2=400pF.
VIN
VIN
48. Load capacitance is capacitance of piezo speaker. When piezo speaker is used, 10Ω or more series
CLAMP
CLAMP
CLAMP
Figure 3. Measurement Point (Using Sag Compensation circuit)
Figure 4. Load Capacitance C
LPF
Figure 2
Figure 2 Measurement Point (at DC Output)
-1dB ~ +10.5dB
Step 0.5dB
LPF
LPF
GCA
and
-1dB ~ +10.5dB
Step 0.5dB
-1dB ~ +10.5dB
Step 0.5dB
Figure 3
GCA
GCA
- 9 -
Figure
when Sag Compensation mode and DC Output mode.
+6dB
L
1 and C
5. The cut off frequency of LPF is 10.6MHz at
series
VOUT
VSAG
+6dB
+6dB
L
) and piezo speaker impedance at 1kHz in
3 (at DC Output)
VOTU
VOUT
VSAG
VSAG
C
L
1
Measurement point A
C1
Measurement point A
C2
75Ω
75Ω
75Ω
R1
C
L
75Ω
75Ω
3
[AK4635]
75Ω
R2
2007/10