AK4343EN 参数 Datasheet PDF下载

ASAHI KASEI

[AK4343]

RECOMMENDED OPERATING CONDITIONS

(AVSS, DVSS, HVSS=0V; Note 3)

Parameter

Symbol

min

typ

Power Supplies Analog

AVDD

2.6

3.3

(Note 10) Digital

DVDD

2.6

3.3

HP / SPK-Amp

HVDD

2.6

3.3 / 5.0

Difference

0

AVDD−DVDD

−0.3

max

3.6

3.6

5.25

+0.3

Units

V

V

V

V

Note 3. All voltages with respect to ground.

Note 10. The power-up sequence between AVDD, DVDD and HVDD is not critical. When only AVDD or HVDD is

powered OFF, the power supply current of DVDD at power-down mode may be increased. DVDD should not be

powered OFF while AVDD or HVDD is powered ON.

* AKM assumes no responsibility for the usage beyond the conditions in this datasheet.

ANALOG CHARACTERISTICS

(Ta=25°C; AVDD, DVDD, HVDD=3.3V; AVSS=DVSS=HVSS=0V; fs=44.1kHz, BICK=64fs;

Signal Frequency=1kHz; 16bit Data; Measurement frequency=20Hz

∼

20kHz; unless otherwise specified)

min

typ

max

Parameter

Gain Amplifier:

LIN1/RIN1/LIN2/RIN2 pins & LIN3/RIN3 pins (AIN3 bit = “1”);

MDIF1=MDIF2 bits = “0” (Single-ended inputs)

Input

MGAIN1-0 bits = “00”

40

60

80

Resistance MGAIN1-0 bits = “01”, “10”or “11”

20

30

40

MGAIN1-0 bits = “00”

-

0

-

MGAIN1-0 bits = “01”

-

+20

-

Gain

MGAIN1-0 bits = “10”

-

+26

-

MGAIN1-0 bits = “11”

-

+32

-

Gain Amplifier:

IN1+/IN1−/IN2+/IN2− pins; MDIF1 = MDIF2 bits = “1” (Full-differential input)

Maximum Input Voltage (Note 11)

MGAIN1-0 bits = “01”

-

-

0.228

MGAIN1-0 bits = “10”

-

-

0.114

MGAIN1-0 bits = “11”

-

-

0.057

Units

kΩ

kΩ

dB

dB

dB

dB

Vpp

Vpp

Vpp

Note 11. The voltage difference between IN1/2+ and IN1/2− pins. AC coupling capacitor should be inserted in series at

each input pin. Full-differential mic input is not available at MGAIN1-0 bits = “00”. Maximum input voltage of

IN1+, IN1−, IN2+ and IN2− pins is proportional to AVDD voltage, respectively.

Vin = 0.069 x AVDD (max)@MGAIN1-0 bits = “01”, 0.035 x AVDD (max)@MGAIN1-0 bits = “10”, 0.017 x

AVDD (max)@MGAIN1-0 bits = “11”.

When the signal larger than above value is input to IN1+, IN1−, IN2+ or IN2− pin, Gain Amp does not operate

normally.

MS0478-E-01

-7-

2006/10