MX93002 Просмотр технического описания (PDF) - Macronix International

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MX93002

PCM CODEC

Macronix International 

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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