ADAU1373BCBZ-R7 datasheet(22/296 Pages) AD

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ADAU1373

Rev. 0 | Page 22 of 296

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

TOP VIEW

(BALL SIDE DOWN)

Not to Scale

BALL A1

CORNER

Figure 6. Pin Configuration

Table 9. Pin Function Descriptions

No.

Mnemonic

Type

Description

DGND

PWR

Digital Ground. The AGND and DGND pins must be tied directly together in a common ground plane.

MODE

D_IN

Mode Select I2C Operation. Must be pulled low for I2C mode.

IOVDD4

PWR

Supply for Digital Microphone Input Port. Set IOVDD4 between 1.8 V and 3.3 V and decouple to

DGND using a 100 nF capacitor.

DMIC_CLK

D_OUT

Clock Output for Digital Microphone.

AIN4R/AIN4N

A_IN

Right Channel Input 4 (AIN4R)/Inverting Input 4 (AIN4N).

AIN3R/AIN3N

A_IN

Right Channel Input 3 (AIN3R)/Inverting Input 3 (AIN3N).

AIN2R/AIN2N

A_IN

Right Channel Input 2 (AIN2R)/Inverting Input 2 (AIN2N).

AIN1R/AIN1N

A_IN

Right Channel Input 1 (AIN1R)/Inverting Input 1 (AIN1N).

AVDD

PWR

1.5 V to 1.8 V Analog Supply for DAC and Microphone Bias. Decouple this pin to AGND using a 100 nF

capacitor.

DVDD

PWR

Digital Core Supply. Decouple this pin to DGND with a 100 nF capacitor.

ADDR

D_IN

Address Setting Pin for I2C Port. Pull high/low to IOVDD4, using a resistor for the desired chip address.

IOVDD5

PWR

Supply for I2C Port. Set IOVDD5 between 1.8 V and 3.3 V and decouple to DGND using a 100 nF

capacitor.

DMIC1_2_DATA

D_IN

Serial Data Input Digital Microphone 1 and Serial Data Input Digital Microphone 2.

AIN4L/AIN4P

A_IN

Left Channel Input 4 (AIN4L)/Noninverting Input 4 (AIN4P).

AIN3L/AIN3P

A_IN

Left Channel Input 3 (AIN3L)/Noninverting Input 3 (AIN3P).

AIN2L/AIN2P

A_IN

Left Channel Input 2 (AIN2L)/Noninverting Input 2 (AIN2P).

AIN1L/AIN1P

A_IN

Left Channel Input 1 (AIN1L)/Noninverting Input 1 (AIN1P).

A_OUT

AVDD/2 V Common-Mode Reference. Connect a 1 μF ceramic decoupling capacitor between this

pin and ground to reduce crosstalk between the ADCs and DACs. This pin can be used to bias

external analog circuits, as long as they are not drawing current from CM (for example, the

noninverting input of an op amp).

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