MAX98088 데이터 시트보기 (PDF) - Maxim Integrated

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MAX98088

Stereo Audio Codec with FLEXSOUND Technology

Maxim Integrated 

MAX98088

Stereo Audio Codec

with FlexSound Technology

ELECTRICAL CHARACTERISTICS (continued)

(VAVDD = VPVDD = VDVDD = VDVDDS1 = VDVDDS2 = +1.8V, VSPKLVDD = VSPKRVDD = 3.7V. Speaker loads (ZSPK) connected between

SPK_P and SPK_N. Receiver load (RREC) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR

to HPGND. Line out loads (RLOAD) connected from LOUTL or LOUTR to SPKLGND. RLOAD = RHP = J, RREC = J, ZSPK = J, CREF

= 2.2FF, CMICBIAS = CREG = 1FF, CC1N-C1P = 1FF, CHPVDD = CHPVSS = 1FF. AVMICPRE_ = +20dB, AVMICPGA_ = 0dB, AVDACATTN

= 0dB, AVDACGAIN = 0dB, AVADCLVL = 0dB, AVADCGAIN = 0dB, AVPGAIN_ = 0dB, AVHP_ = 0dB, AVREC = 0dB, AVSPK_ = 0dB,

MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = TMIN to TMAX, unless otherwise noted. Typical values are at +25NC.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

HEADPHONE AMPLIFIER

Output Power

Positive Charge-Pump Output

Voltage

Negative Charge-Pump

Output Voltage

Output Voltage Threshold

(Output Voltage at which

the Charge Pump Switches

Modes; VOUT Rising;

Transition from Split to Invert

Mode)

POUT

HPVDD

HPVSS

VTH

f = 1kHz, THD = 1%

RHP = 32I

RHP = 16I

VOUT ≤ VPVDD x 0.25V, RHP = J

VOUT > VPVDD x 0.25V, RHP = J

VOUT ≤ VPVDD x 0.25V, RHP = J

VOUT > VPVDD x 0.25V, RHP = J

RL = J

Full-Scale Output

(Note 7)

Volume Control

AVHP_ (Note 5)

HPVOL_ = 0x00

HPVOL_ = 0x1F

+3dB to +1dB

+1dB to -5dB

Volume Control Step Size

-5dB to -19dB

-19dB to -43dB

-43dB to -67dB

Mute Attenuation

f = 1kHz

Output Offset Voltage

VOS AVHP_ = -67dB

Capacitive Drive Capability

SPEAKER BYPASS SWITCH

No sustained oscillations

TA = +25NC

TA = TMIN to TMAX

RHP = 32I

RHP = J

On-Resistance

RON

ISPKL_ = 100mA, SPKBYP = 1,

VRXIN_ = [0V, VSPKLVDD]

Total Harmonic Distortion +

Noise

THD+N

VIN = 2VP-P, VCM = VSPKLVDD/2, RS = 10I

ZSPK = 8I + 68FH, f = 1kHz,

SPKBYP = 1

RS = 0I

Off-Isolation

VIN = 2VP-P, VCM = VSPKLVDD/2,

ZSPK = 8I + 68FH, f = 1kHz

Off-Leakage Current

VRXIN_ = [0V, VSPKLVDD],

VSPKL_ = [VSPKLVDD, 0V]

MIN TYP MAX UNITS

30

mW

38

PVDD/2

V

PVDD

-PVDD/2

V

-PVDD

QPVDD

x 0.25

V

1

VRMS

-67

dB

+3

0.5

1

2

dB

3

4

100

dB

Q0.5 Q1

mV

Q3

500

pF

100

2.8

I

60

dB

60

96

dB

-20

+20 FA

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