MAX9888 데이터 시트보기 (PDF) - Maxim Integrated
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MAX9888 Datasheet PDF : 115 Pages
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Stereo Audio CODEC
with FLEXSOUND Technology
ELECTRICAL CHARACTERISTICS (continued)
(VAVDD = VHPVDD = 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 GND. RHP = J, RREC = J, ZSPK = J, CREF = 2.2FF, CMICBIAS = CPREG = CREG = 1FF, CC1N-C1P = 1FF, CHPVSS
= 1FF. AVMICPRE_ = +20dB, AVMICPGA_ = 0dB, AVDACATTN = 0dB, AVDACGAIN = 0dB, AVADCLVL = 0dB, AVADCGAIN = 0dB,
AVPGAIN_ = 0dB, AVPGAOUT_ = 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 TA = +25NC.) (Note 1)
PARAMETER
MICROPHONE PREAMP
Full-Scale Input
Preamplifier Gain
PGA Gain
SYMBOL
CONDITIONS
AVMICPRE_ = 0dB
PA1EN/PA2EN = 01
AVMICPRE_ (Note 5)
PA1EN/PA2EN = 10
PA1EN/PA2EN = 11
AVMICPGA_ (Note 5)
PGAM1/PGAM2 = 0x00
PGAM1/PGAM2 = 0x14
MIN TYP MAX UNITS
1.05
VP-P
0
19.5
20
20.5 dB
29.4
30
30.5
19.5
20
20.5
dB
0
MIC Input Resistance
RIN_MIC
All gain settings, measured at MIC1P/MIC1N/
MIC2P/MIC2N
30
50
kI
MICROPHONE BIAS
MICBIAS Output Voltage
Load Regulation
Line Regulation
Ripple Rejection
VMICBIAS
Noise Voltage
MICROPHONE BYPASS SWITCH
ILOAD = 1mA
ILOAD = 1mA to 2mA
VSPKLVDD = 2.8V to 5.5V
f = 217Hz, VRIPPLE (SPKLVDD) = 100mVP-P
f = 10kHz, VRIPPLE (SPKLVDD) = 100mVP-P
A-weighted, f = 20Hz to 20kHz
P-weighted, f = 20Hz to 4kHz
f = 1kHz
2.14
2.2
2.25
V
0.5
11
mV
100
FV
92
dB
83
3.8
2.1
FVRMS
33
nV/√Hz
On-Resistance
RON
IMIC1_ = 100mA, INABYP = MIC2BYP = 1,
VMIC2_ = VINA_ = (0V, VAVDD)
3.5
20
I
Total Harmonic Distortion +
Noise
THD+N
VIN = 2VP-P, VCM = 0.9V, RL = 10kI,
f = 1kHz, INABYP = MIC2BYP = 1
-80
dB
Off-Isolation
VIN = 2VP-P, VCM = 0.9V, RL = 10kI,
f = 1kHz
60
dB
Off-Leakage Current
LINE INPUT TO ADC PATH
VMIC1_ = (0V, VAVDD),
VMIC2_/VINA_ = (VAVDD, 0V)
-2.5
+2.5 FA
Dynamic Range (Note 4)
DR
fS = 48kHz, MCLK = 12.288MHz, MODE = 1
(FIR audio)
91
dB
Total Harmonic Distortion +
Noise
THD+N VIN = 1VP-P, f = 1kHz
-77
dB
Gain Error
DC accuracy
1
5
%
8
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