ak4645 ETC-unknow, ak4645 Datasheet - Page 55

• Manufacturer Part Number: ak4645
• Description: Stereo Codec With Mic/hp-amp
• Manufacturer: ETC-unknow

ASAHI KASEI
When AIN3 bit = “0”, MIN pin is used as mono input for analog mixing. When the PMMIN bit is set to “1”, the mono
input is powered-up. When the MINH bit is set to “1”, the input signal from the MIN pin is output to Headphone-Amp.
When the MINL bit is set to “1”, the input signal from the MIN pin is output to the stereo line output amplifier. The
external resister Ri adjusts the signal level of MIN input. Table 47 and Table 49 show the typical gain example at R
20kΩ. This gain is in inverse proportion to R
MS0543-E-00
Analog Mixing: Mono Input (MIN pin)
MIN
Table 49. MIN Input
Table 47. MIN Input
Table 48. MIN Input
LOVL bit
LOVL bit
HPG bit
0
1
0
1
0
1
Ri
Figure 7. Block Diagram of MIN pin
i
.
Headphone-Amp Output Gain (typ) at R
LOUT/ROUT Output Gain (typ) at R
LOP/LON Output Gain (typ) at R
MIN
MIN
MIN
- 55 -
−16.4dB
−20dB
LOUT/ROUT
+2dB
+6dB
+8dB
0dB
LOP/LON
HPL/HPR
MINH
MINL
Default
Default
Default
i
LOUT/RCP pin,
ROUT/RCN pin
HPL, HPR pin
= 20kΩ
i
= 20kΩ
i
= 20kΩ
[AK4645]
2006/09
i
=