MAX9853 Maxim Integrated Products, MAX9853 Datasheet - Page 13

• Manufacturer Part Number: MAX9853
• Description: (MAX9851 / MAX9853) Stereo Audio CODECs
• Manufacturer: Maxim Integrated Products

ELECTRICAL CHARACTERISTICS (continued)
(AV
10kΩ, R
PGAs = 0dB, HP/REC volume = -20.0dB, SPK volume = -20.4dB, line output gain = -0.4dB, T
noted. Typical values are at T
Stereo Audio CODECs with Microphone, DirectDrive
MICROPHONE BIAS
INTMICBIAS Output Voltage
INTMICBIAS Load Regulation
INTMICBIAS Minimum Capacitive
Load
INTMICBIAS Short-Circuit Current
INTMICBIAS Power-Supply
Rejection Ratio
INTMICBIAS Noise Voltage
EXTMICBIAS_ Output Impedance
EXTMICBIAS_ Off-Impedance
LINE INPUT (Note 13)
Line Input Maximum Input
Voltage
Line Input Resistance
Line Channel-to-Channel Gain
Matching
PGA Gain Range
HEADSET AUTO-DETECT (Normal Operation)
MIC Sense High Threshold
MIC Sense Low Threshold
MIC Sense Deglitch Period
Headphone Sense Current
Headphone Sense Voltage
Headphone Sense Threshold
SLEEP MODE (AV
MIC Sense Current
MIC Sense Voltage
MIC Sense Sleep Threshold
DD
Headphones, Speaker Amplifiers, or Line Outputs
= CPV
OUTR+
PARAMETER
DD
to R
= +3V, DV
OUTR-
CC
______________________________________________________________________________________
= 0V or 3V)
= 10kΩ, C1 = 0.22µF, C2 = C
DD
A
= DV
= +25°C.) (See Functional Diagrams/Typical Operating Circuits).
DDS2
AV
SYMBOL
V
R
t
V
V
I
MICBIAS
GLITCH
PSRR
EXTMIC
SENSE
V
V
V
V
V
SENSE
NOISE
MATCH
I
R
MIC
TH1
TH2
TH3
MIC
TH4
IN
= +1.8V, PV
I
To AGND
AV
V
V
f = 22Hz to 20kHz
f = 1kHz
2.2kΩ setting
470Ω setting
V
MIC bias and bias resistor enabled
MIC bias and bias resistor enabled
P ul ses shor ter than t
V
H P R/H P L ( head p hone am p l i fi er s d i sab l ed )
Test 2 (HPTEST = 1) - HPR only
EXTMICBIASL = AGND
Voltage at EXTMICBIASL
MICBIAS
H P L
RIPPLE
RIPPLE
EXTMICBIAS_
DD
/ V
DD
= 2.6V to 3.3V, T
H P R
= 100mV at 217Hz
= 100mV at 10kHz
NREG
= +3.3V, R
= 0 to 2mA
= AGND ( head phones d isab led )
CONDITIONS
= 0 to 3.0V
= C
PREG
GLI TC H 1
HP
A
= 32Ω, Z
= C
= +25°C
ar e el i m i nated
INTMICBIAS
SPK
= 8Ω + 10µH, R
, C
MBIAS
V
V
MICBIAS
MICBIAS
0.92 x
0.06 x
0.74 x
AV
-34.0
MIN
2.00
425
2.3
0.9
10
1
A
DD
= C
= T
REC
REF
MIN
V
V
MICBIAS
MICBIAS
0.95 x
0.73 x
0.1 x
AV
AV
PV
= 32Ω, R
TYP
= 1µF, MCLK = 13MHz, all
2.4
0.7
2.8
3.4
±1
15
72
85
70
20
20
20
to T
1
2
2
0
3
2
DD
DD
DD
MAX
V
V
OUTL+
MICBIAS
MICBIAS
0.98 x
, unless otherwise
0.17x
0.82 x
+30.5
AV
MAX
2.42
515
2.5
2.7
10
10
5
DD
to R
nV/√Hz
UNITS
µV
OUTL-
V
MΩ
mA
ms
dB
dB
dB
kΩ
kΩ
dB
µA
µA
µF
%
Ω
Ω
P-P
V
RMS
V
V
V
V
V
V
13
=