Electrical characteristics (continued) – Rainbow Electronics MAX98089 User Manual
Page 18
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MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
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
LOUT
) connected from LOUTL or LOUTR to SPKLGND. 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 = 0. T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25NC.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
HEADPHONE AMPLIFIER
Output Power
P
OUT
f = 1kHz, THD = 1%
R
HP
= 32I
30
mW
R
HP
= 16I
38
Positive Charge-Pump Output
Voltage
HPVDD
V
OUT
≤ V
PVDD
x 0.2V, R
HP
= J
PVDD/2
V
V
OUT
> V
PVDD
x 0.2V, R
HP
= J
PVDD
Negative Charge-Pump Out-
put Voltage
HPVSS
V
OUT
≤ V
PVDD
x 0.2V, R
HP
= J
-PVDD/2
V
V
OUT
> V
PVDD
x 0.2V, R
HP
= J
-PVDD
Output Voltage Threshold
(Output Voltage at which
the Charge Pump Switches
Modes; VOUT Rising; Transi-
tion from Split to Invert Mode)
V
TH
RL = J
Q
PVDD
x 0.2
V
Full-Scale Output
(Note 7)
1
V
RMS
Volume Control
AV
HP_
(Note 5)
HPVOL_ = 0x00
-67
dB
HPVOL_ = 0x1F
+3
Volume Control Step Size
+3dB to +1dB
0.5
dB
+1dB to -5dB
1
-5dB to -19dB
2
-19dB to -43dB
3
-43dB to -67dB
4
Mute Attenuation
f = 1kHz
100
dB
Output Offset Voltage
V
OS
AV
HP_
= -67dB
T
A
= +25NC
Q
0.1
Q
1
mV
T
A
= T
MIN
to T
MAX
Q
3
Capacitive Drive Capability
No sustained oscillations
R
HP
= 32I
500
pF
R
HP
= J
100
SPEAKER BYPASS SWITCH
On-Resistance
R
ON
I
SPKL_
= 100mA, SPKBYP = 1,
V
RXIN_
= [0V, V
SPKLVDD
]
2.8
I
Total Harmonic Distortion +
Noise
THD+N
V
IN
= 2V
P-P
, V
CM
= V
SPKLVDD
/2,
Z
SPK
= 8I + 68FH, f = 1kHz,
SPKBYP = 1
R
S
= 10I
60
dB
R
S
= 0I
60
Off-Isolation
V
IN
= 2V
P-P
, V
CM
= V
SPKLVDD
/2,
Z
SPK
= 8I + 68FH, f = 1kHz
96
dB
Off-Leakage Current
V
RXIN_
= [0V, V
SPKLVDD
],
V
SPKL_
= [V
SPKLVDD
, 0V]
-20
+20
F
A