max9856 Maxim Integrated Products, Inc., max9856 Datasheet - Page 6

• Manufacturer Part Number: max9856
• Description: Max9856 Low-power Audio Codec With Directdrive Headphone Amplifiers
• Manufacturer: Maxim Integrated Products, Inc.

Low-Power Audio CODEC with
DirectDrive Headphone Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(V
C
otherwise noted. Typical values are at T
6
Total Harmonic Distortion Plus
Noise
Signal-to-Noise Ratio
Power-Supply Rejection Ratio
Capacitive Drive
Crosstalk
Channel Gain Matching
VOLUME CONTROL
Headphone Volume Control
Range
Headphone Volume Control Step
Size
Headphone Mute Attenuation
CHARGE PUMP
Charge-Pump Oscillator
Frequency
MICROPHONE AMPLIFIERS
Preamplifier Gain
MIC PGA Gain
MIC PGA Gain Step Size
MIC Mute Attenuation
Common-Mode Rejection Ratio
MIC Input Resistance
MIC Input Resistance Matching
MIC Input Bias Voltage
Input Voltage Noise
NREG
AVDD
_______________________________________________________________________________________
= 1µF, A
= V
PARAMETER
CPVDD
VPRE
= V
= +20dB, C
DVDDS2
= V
MICBIAS
DVDD
A
SYMBOL
A
R
THD+N
R
VMICPGA
VMATCH
A
CMRR
PSRR
V
A
MATCH
IN_MIC
SNR
f
OSC
VPRE
C
CML
= 1.8V, R
= +25°C.) (Note 1)
L
= 1µF, A
V
V
V
V
No sustained oscillations
V
or (LOUTR to LOUTL)
5.5dB to 2dB
+2.5dB to -2dB
-2dB to -46dB
-46dB to -74dB
f = 1kHz
T
MICL or MICR
PGAML/R = 0x20
PGAML/R = 0x00
f = 1kHz
INL±, V
A
INL±, MICL or MICR, A
INL±, MICL or MICR, A
INL±, MICL or MICR, A
INL+ to INL- or MICL/MICR to AGND
Measured at INL±, MICR, MICL, and AGND
f = 1kHz, A
A
OUT
AVDD
RIPPLE
RIPPLE
OUT
VPRE
HP
VMICPGA
= +25°C
= 32Ω, R
= 1V
= 2V
= +20dB
= 1.71V to 3.6V
IN
= 100mV
= 100mV
= 100mV
RMS
P-P
VPRE
= 0dB, MCLK = 11.2896MHz, DRATE = 00, T
, f = 1kHz, (LOUTL to LOUTR)
LINE
, f = 1kHz
CONDITIONS
= +30dB
P-P
P-P
P-P
= 10kΩ, C1 = 4.7µF, C2 = 4.7µF, C
, f = 217Hz
, f = 10kHz
PALEN/PAREN = 01
PALEN/PAREN = 10
PALEN/PAREN = 11
at 217Hz,
VPRE
VPRE
VPRE
= +30dB
= +20dB
= 0dB
-74.0
-0.05
28.5
19.5
MIN
600
-0.5
-0.5
70
19
12
60
4
0.024
REF
TYP
30.0
20.0
108
150
665
100
0.5
±2
A
98
93
60
98
92
20
92
73
18
15
1
2
4
0
0
1
8
1
0
= T
= C
MIN
MBIAS
+0.05
MAX
+5.5
+0.5
+0.5
31.5
19.5
720
160
21
10
28
to T
MAX
= C
nV/√Hz
UNITS
, unless
PREG
kHz
dB
dB
pF
dB
dB
dB
dB
dB
dB
dB
dB
dB
kΩ
%
%
%
V
=