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MUX

Analog

Loopback

(600 ΩDriver)

MICIN

INP2

INM2

INP1

INM1

OUTP1

OUTM1

BIAS

PGA

− 42 dB to 20 dB

Step Size = 1 dB

Low-Pass

Filter

Sigma-

Delta

DAC

Anti-

Aliasing

Filter

Sigma-

Delta

ADC

Sinc

Filter

FIR Filter

IIR Filter

Decimation Filter

Sinc

Filter

FIR Filter

IIR Filter

Interpolation Filter

Digital Loopback

w/ Sidetone Control

and Mute

M/S

DOUT

DIN

FS

SCLK

FSD

SCL

SDA

Host Port

Div

16xMxNxP

Internal Clock Circuit MCLK

PGA

− 42 dB to 20 dB

Step Size = 1 dB

SMARTDM

Preamplifier

24, 12, 6, 0 dB

−3 dB to −21 dB

1.35 V/2.35 V @ 5 mA max

Serial

Port

V

ref

s

2

d

TLV320AIC12, TLV320AIC13

TLV320AIC14, TLV320AIC15

TLV320AIC12K, TLV320AIC14K

SLWS115E – OCTOBER 2001 – REVISED JANUARY 2007

Functional Block Diagram AIC14/15/14k

13

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