MX93002FC 参数 Datasheet PDF下载

MX93002

. Line Driver (LIN-DRV)

. Not only support the programmable gain from 0 to 22.5dB, but also fully differentially drive 6Vpp over 600Ω;

. If switches

SWE, SWJ, SWK

and

SWL

are opened, then the line driver will be muted to -70dB and power-down

automatically;

1. output swing : Single Ended (only use

LOUTP

or

LOUTN)

: 0 ~ 3Vpp (over 600Ω load, at LIN-DRV = 0dB);

Fully differential (use

LOUTP

+

LOUTN)

: 0 ~ 6Vpp (over 600Ω load, at LIN-DRV = 0dB);

2.

LIN-DRV

gain step from 0dB to 22.5dB (1.5dB/step);

3. THD : less than 70dB at 6Vpp output over 600Ω load;

. D/A PGA

. Input Range : 0 ~ AVDD-2Vpp;

.

DA-PGA

can support gain step from 0dB to 6dB (2dB/step);

. Attenuator (ATT1 &

ATT2)

. Speaker output signal can be attenuated either by internal register or external resistor;

. If switches

SWF

and

SWH

are opened, then attenuator will be muted to -70dB automatically;

1.

ATT1

(internal register) : 16 steps programmable, from -45dB to 0dB (-45, -39, -33, -27, -24, -21, -18, -15,

-12, -9, -7.5, -6, -4.5, -3, -1.5, 0dB);

2.

ATT2

(external variable resistor) : from -45 ~ 0dB (determined by external 10KΩ potentiometer);

3. THD : less than 70dB;

4. input range for

AUX2

: 0 ~ AVDD-2Vpp;

5. input impedance for

AUX2

: more than 15KΩ;

. Speaker Driver (SPK-DRV)

. If switches

SWF

and

SWH

are opened, then

SPK-DRV

will be power-down automatically;

1. Maximum output swing : 6Vpp with 8Ω load at fully differential output (SPKP +

SPKN);

2. THD : less than 60dB (at 6Vpp/8Ω load);

. Voltage Reference (VREF & VAG)

. Two 2.25VW voltage references are on-chip generated, where

VREF

is for external circuit use and

VAG

is for

internal circuit use;

.

VREF

can be used to bias the microphone, the level shift circuit or other applications;

1.

VREF

driving capacity : more than 400uA;

2. User can use the

VREF

to provide DC bias to external components;

. Bandgap Reference (VBG)

. A bandgap circuit generates a voltage source (VBG) which is around 1.2VW. It is with low temperature

coefficient and good power supply rejection;

. If user changes VBG bypass capacitor (C15) then the MX93002 warm-up time will be changed; see

The Timing

Diagram of CODEC Function;

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