[AK4420]

PIN/FUNCTION

No.

Pin Name

I/O

Function

1

CN

I

Negative Charge Pump Capacitor Terminal Pin

Connect to CP with a 1.0

μF capacitor that should have the low ESR

(

Equivalent Series Resistance) over all temperature range. When this

capacitor has the polarity, the positive polarity pin should be connected to the

CP pin. Non polarity capacitors can also be used.

2

CP

I

Positive Charge Pump Capacitor Terminal Pin

Connect to CN with a 1.0

μF capacitor that should have the low ESR

(

Equivalent Series Resistance) over all temperature range. When this

capacitor has the polarity, the positive polarity pin should be connected to the

CP pin. Non polarity capacitors can also be used.

3

SMUTE

I

Soft Mute Enable Pin (Internal pull down: 100kΩ)

“H”: Enable, “L”: Disable

4

MCLK

I

Master Clock Input Pin

An external TTL clock should be input on this pin.

5

BICK

I

Audio Serial Data Clock Pin

6

SDTI

I

Audio Serial Data Input Pin

7

LRCK

I

L/R Clock Pin

8

DIF

I

Audio Data Interface Format Pin

“L”: Left Justified, “H”: I2S

9

AOUTR

O

Rch Analog Output Pin

When power down, outputs VSS(0V, typ).

10

AOUTL

O

Lch Analog Output Pin

When power down, outputs VSS(0V, typ).

11

VDD

-

DAC Power Supply Pin: 4.5V

∼5.5V

12

VSS1

-

Ground Pin1

13

DZF

O

Zero Input Detect Pin

14

CVDD

-

Charge Pump Power Supply Pin: 4.5V

∼5.5V

15

VSS2

-

Ground Pin2

16

VEE

O

Negative Voltage Output Pin

Connect to VSS2 with a 1.0

μF capacitor that should have the low ESR

(

Equivalent Series Resistance) over all temperature range. When this

capacitor has the polarity, the positive polarity pin should be connected to the

VSS2 pin. Non polarity capacitors can also be used.

Note: All input pins except for the CN pin should not be left floating.

MS0683-E-02

2007/12

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