Datasheet

MAX9850
Stereo Audio DAC with DirectDrive
Headphone Amplifier
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(DV
DD
= AV
DD
= PV
DD
= 3.0V, AGND = DGND = PGND = 0V, C1 = 0.47µF, C2 = 2.2µF, C
NREG
= C
PREG
= C
REF
= 1µF to AGND,
R
LOAD_HP
= 32Ω to AGND, R
LOAD_OUT
= 10kΩ to AGND, f
LRCLK
= 48kHz, f
MCLK
= 12.288MHz, volume set to -9.5dB, T
A
= T
MIN
to
T
MAX
, unless otherwise noted. Typical specifications at T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
0dBFS 87
-60dBFS
27.5
AV
DD
= 1.8V,
0dBFS
-81
Total Harmonic Distortion Plus
Noise
THD+N
f
IN
= 984.375Hz
AV
DD
= 1.8V,
-60dBFS
-27.5
-22
dB
Line Output Offset Voltage
V
OS_LINE
-15 0
+15
mV
Channel-to-Channel Gain
Matching
ΔAV/AV
OUTL to OUTR, OUTR to OUTL
±0.04
dB
V
RIPPLE
= 100mV
P-P
, f
IN
= 1kHz, applied to
AV
DD
and PV
DD
87
Power-Supply Rejection Ratio PSRR
V
RIPPLE
= 100mV
P-P
, f
IN
= 20kHz, applied
to AV
DD
and PV
DD
67
dB
Crosstalk XTALK
f
OUT
= 1kHz, V
OUT
= 2V
P-P
(OUTL to OUTR) or (OUTR to OUTL)
-105
dB
Sampling Frequency Range f
S
8 48 kHz
MCLK Frequency f
MCLK
8.448
40
MHz
DAC 8x INTERPOLATION FILTER
Passband Frequency PB To -1dB corner 0
0.48 x
f
S
kHz
Frequency Response FR 10Hz to 20kHz
-0.1 +0.1
dB
Stopband Attenuation SBA 58 dB
Stopband Frequency SB Attenuation greater than SBA
0.58 x
f
S
7.42 x
f
S
kHz
LINE INPUTS (INL, INR)
Line Input Voltage
V
IN_LINE
-1 +1 V
IN_ to OUT_ Gain
A
V_LINE
-1.05
-1
-0.95
V/V
Line Input Bias Voltage
V
BIAS_LINE
-15 0
+15
mV
INL and INR Input Resistance
R
IN_LINE
10 22 kΩ
INTERNAL REGULATORS (NREG, PREG)
PREG Output Voltage V
PREG
1.60
V
NREG Output Voltage V
NREG
-1.15
V
REF Output Voltage V
REF
1.23
V