SLAS366 datasheet(11/58 Pages) TI2

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2–1

2 Terminal Descriptions

IOVSS

IOVDD

FSD

DOUT

DIN

M/S

PWRDN

OUTM1

OUTP1

DRVDD

DRVSS

DVSS

DVDD

SCLK

SDA

SCL

MCLK

RESET

INP1

INM1

BIAS

INM2

INP2

MICIN

AVDD

AVSS

DBT PACKAGE

(TOP VIEW)

2.1

Ordering Information

30-TSSOP DBT PACKAGE

°C to 70°C

TLV320AIC14C

–40

°C to 85°C

TLV320AIC14I

2.2

Terminal Functions

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

AVDD

Analog power supply

AVSS

Analog ground

BIAS

Bias output voltage is software selectable between 1.35 V and 2.35 V. Its output current is 5 mA.

DIN

Data input. DIN receives the DAC input data and register data from the external DSP (digital signal processor) and is

synchronized to SCLK and FS. Data is latched at the falling edge of SCLK when FS is low.

DOUT

Data output. DOUT transmits the ADC output bits and registers data, and is synchronized to SCLK and FS. Data is

sent out at the rising edge of SCLK when FS is low. Outside data/control frame, DOUT is put in 3-state.

DRVDD

Analog power supply for the 600-

Ω driver

DRVSS

Analog ground for the 600-

Ω driver

DVDD

Digital power supply

DVSS

Digital ground

I/O

Frame sync. When FS goes low, DIN begins receiving data bits and DOUT begins transmitting data bits. In master

mode, FS is internally generated and is low during the data transmission to DIN and from DOUT. In slave mode, FS is

externally generated.

FSD

Frame sync delayed output. The FSD output synchronizes a slave device to the frame sync of the master device. FSD

is applied to the slave FS input and is the same duration as the master FS signal. This pin must be pulled low if AIC14 is

a stand-alone slave. It may be pulled high if the AIC14 is a stand-alone master or the last slave in the cascade.

INM1

Inverting analog input 1. It must be connected to AVSS if not used.

INM2

Inverting analog input 2. It must be connected to AVSS if not used.

INP1

Noninverting analog input 1. It must be connected to AVSS if not used.

INP2

Noninverting analog input 2. It must be connected to AVSS if not used.

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