AK4560A 查看數據表（PDF） - Asahi Kasei Microdevices

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AK4560A

16bit CODEC with ALC and MIC/HP/SPK-Amps

Asahi Kasei Microdevices 

ASAHI KASEI

[AK4560A]

ANALOG CHARACTERISTICS

(Ta=25°C; VA=VD=2.8V, MVDD=3.9V, SVDD=4.0V, HVDD=4.5V; AGND=DGND=MVSS=SVSS=0V; fs=48kHz;

Input Frequency = 1kHz; Measurement width = 20Hz ∼ 20kHz; unless otherwise specified)

Parameter

min

typ

max

Units

Pre-Amp Characteristics:

Input Resistance (Note 9)

70

100

130

kΩ

Maximum Output Voltage (Note 10)

-1

dBV

Gain

+18

+26

+30

dB

Load Resistance

1

kΩ

Load Capacitance (Note 11)

20

pF

EQ-Amp Characteristics: (Gain:0dB)

Maximum Output Voltage (Note 11)

-1

dBV

Load Resistance

1

kΩ

Load Capacitance (Note 11)

20

pF

HPF-Amp Characteristics: (Gain: 0dB)

Maximum Output Voltage (Note 10)

-1

dBV

Load Resistance

3

kΩ

Load Capacitance (Note 11)

20

pF

MIC Block Characteristics: Measured via HPF_O_L/HPF_O_R (Note 12)

S/(N+D) (-10dBV Output)

60

77

dB

Output Noise Voltage (No signal input, Rg = 1kΩ)

BW = 20Hz ∼ 20kHz, A-Weighted) (Note 13)

BW = 400Hz ∼ 30kHz (Note 14)

-93

-89

dBV

-92

-88

dBV

Interchannel Isolation

70

90

dB

MIC Power Supply Characteristics:

Output Voltage (No Load) (Note 15)

2.2

2.5

2.8

V

Output Current

3

mA

Note 9. INT_MIC_L, INT_MIC_R, EXT_MIC_L and EXT_MIC_R pins

Note 10. Maximum output voltage is typically (MVDD-1.3) V.

Note 11. When output pin drives some capacitive load, some resistor should be added in series between output pin and

capacitive load.

Note 12. These values are measured via the following path. EQ-Amp and HPF-Amp are a unity gain buffer.

Pre-Amp (Gain: +26dB → EQ-Amp (Gain: 0dB, Not add signal of other channel) → HPF-Amp (Gain: 0dB)

Note 13. In case of the following path, output noise voltage is suitable value for -59.4dB (typ) and -55.4dBV (min).

MIC Block (Gain: +26dB, Input from INT_MIC_L/INT_MIC_R pins) → IPGA (Gain: +26dB) + ADC →

DAC+LINEOUT (Gain: +7.5dB, Measured via LOUT1/ROUT1 pins)

Note 14. In the following path, if analog input signal is –70dBV (Then analog output level is –10.5dBV at LINEOUT),

output noise voltage except the fundamental wave is suitable value for 58.4dBV(typ.) and –54.4dBV(min.).

Because it is not possible that each block of IPGA, ADC, DAC and LINEOUT output a distortion when the small

signal level is input.

MIC Block (Gain: +26dB, Input from INT_MIC_L/INT_MIC_R pins) → IPGA (Gain: +26dB) + ADC →

DAC+LINEOUT (Gain: +7.5dB, Measured via LOUT1/ROUT1 pins)

Note 15. Output voltage is typically (MVDD - 1.4) V.

MS0028-E-00

-7-

2000/05

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