Rainbow Electronics MAX98088 - Manual (Page 16)

Stereo Audio Codec
with FLEXSOUND Technology
MAX98088
16
ELECTRICAL CHARACTERISTICS (continued)
(V AVDD = V PVDD = V DVDD = V DVDDS1 = V DVDDS2 = +1.8V, V SPKLVDD = V SPKRVDD = 3.7V. Speaker loads (Z SPK ) connected
between SPK_P and SPK_N. Receiver load (R REC ) connected between RECP and RECN. Headphone loads (R HP ) connected from
HPL or HPR to HPGND. Line out loads (R LOAD ) connected from LOUTL and LOUTR to ground. R LOAD = R HP = J, R REC = J, Z SPK
= J, C REF = 2.2FF, C MICBIAS = C REG = 1FF, C C1N-C1P = 1FF, C HPVDD = C HPVSS = 1FF. AV MICPRE_ = +20dB, AV MICPGA_ = 0dB,
AV DACATTN = 0dB, AV DACGAIN = 0dB, AV ADCLVL = 0dB, AV ADCGAIN = 0dB, AV PGAIN_ = 0dB, AV HP_ = 0dB, AV REC = 0dB, AV SPK_
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. T A = +25NC, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
EXCURSION LIMITER
Upper Corner Frequency
Range
DHPUCF = 001 to 100 400 1000 Hz
Lower Corner Frequency DHPLCF = 01 to 10 400 Hz
Biquad Minimum Corner
Frequency
DHPUCF = 000 (fixed mode) 100
Hz
DHPUCF = 001 200
DHPUCF = 010 300
DHPUCF = 011 400
DHPUCF = 100 500
Threshold Voltage
Z SPK = 8I + 68FH,
V SPKLVDD = V SPKRVDD =
5.5V, AV SPK_ = 8dB
DHPTH = 000 0.34
V P
DHPTH = 111 0.95
Release Time
ALCRLS = 101 0.25
s
ALCRLS = 000 4
POWER LIMITER
Attenuation
-64 dB
Threshold
Z
SPK
= 8I + 68FH,
V SPKLVDD = V SPKRVDD =
5.5V, AV SPK_ = 8dB
PWRTH = 0x1 0.08
W
PWRTH = 0xF 1.23
Time Constant 1 t PWR1
PWRT1 = 0x1 0.5
s
PWRT1 = 0xF 8.7
Time Constant 2 t PWR2
PWRT2 = 0x1 to 0xF 0.5
min
PWRT2 = 0xF 8.7
Weighting Factor k PWR PWRK = 000 to 111 12.5 100 %
DISTORTION LIMITER
Distortion Limit
THDCLP = 0x1 < 1
%
THDCLP = 0xF 24
Release Time Constant
THDT1 = 000 0.76
s
THDT1 = 111 6.2