max9856 Maxim Integrated Products, Inc., max9856 Datasheet - Page 8

• 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
8
LINEIN1/LINEIN2 INPUTS
Line Input Full-Scale Input
Voltage
Input DC Bias Voltage
Line Input Resistance
Crosstalk
Line Channel-to-Channel Gain
Matching
PGA Gain Range
PGA Gain Step Size
AUXIN INPUT
AUXIN Full-Scale Input Voltage
Input DC Voltage Range
Input DC Bias Voltage
AUXIN Input Resistance
Line Channel-to-Channel Gain
Matching
PGA Gain Range
PGA Gain Step Size
JACK SENSE OPERATION (EN[2:0] = 000)
JACKSNS High Threshold
(JKMIC)
JACKSNS Deglitch Period
(JKMIC)
JACKSNS Voltage (JKMIC)
HEADSET IMPEDANCE DETECT MODE (EN[2:0] = 111)
JACKSNS/HPL/HPR High
Threshold
(JSDET/ HSDETL/HSDETR)
JACKSNS/HPL/HPR Low
Threshold
(JSDET/HSDETL/HSDETR)
JACKSNS/HPL/HPR Sense
Current
(JSDET/HSDETL/HSDETR)
NREG
AVDD
_______________________________________________________________________________________
= 1µF, A
= V
PARAMETER
CPVDD
VPRE
= V
= +20dB, C
DVDDS2
= V
MICBIAS
DVDD
SYMBOL
AV
AV
t
0dBFS
0dBFS
GLITCH
V
V
V
I
MATCH
MATCH
R
R
SNS
TH1
TH2
TH3
A
IN
IN
= 1.8V, R
= +25°C.) (Note 1)
= 1µF, A
PGA = 0dB (Note 9)
LINEIN1 to LINEIN2 or LINEIN2 to
LINEIN1, f = 1kHz
-32dB to +30dB
AUXDC = 0
AUXDC = 1
AUXDC = 0
AUXDC = 0
AUXDC = 1
-32dB to +30dB
T
Pulses shorter than t
JDETEN = 1
HPL/HPR disabled
HPL/HPR disabled
HPL/HPR disabled
A
= +25°C
HP
VMICPGA
= 32Ω, R
= 0dB, MCLK = 11.2896MHz, DRATE = 00, T
CONDITIONS
LINE
GLITCH
= 10kΩ, C1 = 4.7µF, C2 = 4.7µF, C
are eliminated
MICBIAS
0.92 x
0.075
0.32
MIN
-32
-32
1.7
12
12
0
MICBIAS
0.95 x
AVDD
0.100
TYP
0.40
100
2.0
±2
±2
21
97
21
12
REF
2
0
2
2
0
2
A
= T
= C
MICBIAS
MIN
0.98 x
MBIAS
0.125
MAX
0.48
+30
+30
2.3
1
to T
MAX
= C
UNITS
, unless
PREG
V
V
MΩ
mA
ms
kΩ
dB
dB
dB
kΩ
dB
dB
%
%
P-P
V
P-P
V
V
V
V
V
V
=