AK4640_05 AKM [Asahi Kasei Microsystems], AK4640_05 Datasheet - Page 40
AK4640_05
Manufacturer Part Number
AK4640_05
Description
16-Bit ?? CODEC with MIC/HP/SPK-AMP
Manufacturer
AKM [Asahi Kasei Microsystems]
Datasheet
1.AK4640_05.pdf
(78 pages)
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ASAHI KASEI
When DAMO bit is “1”, mono mixer mixes Lch and Rch signal from DAC. This mixed signal is output to mono line
output that is differential output. When MICM bit is “1”, Lch signal from IPGA is output to mono line output. Either
MOUT+ or MOUT− pin can be used as single-ended output pin. The load impedance is 20kΩ (min.). When the PMMO
bit is “0”, the mono line output enters power-down-mode and the output is placed in a Hi-Z state.
ATTL7-0 and ATTR7-0 bits set the volume control of DAC output. ATTM bit sets the volume control of IPGA Lch
output. Amp for mono line output has 6dB gain and −17dB gain that are set by the MOGN bit.
MS0273-E-02
Mono Output (MOUT+/MOUT− pins)
MIC In
MICOUT pin
+20dB/0dB
ATT+DAC
IPGA Lch
AIN pin
Figure 30. Mono Line Output
1/2
1/2
DAMO bit
ATTM bit
ATT
- 40 -
MICM bit
+6dB/-17dB
AK4640
MOGN bit
MOUT+ pin
MOUT− pin
[AK4640]
2005/04
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