MAX9888EWY+T Maxim Integrated Products, MAX9888EWY+T Datasheet - Page 62
MAX9888EWY+T
Manufacturer Part Number
MAX9888EWY+T
Description
IC CODEC AUDIO FLEXSOUND 63WLP
Manufacturer
Maxim Integrated Products
Series
DirectDrive®, FLEXSOUND™r
Type
Class Dr
Datasheet
1.MAX9888EWYT.pdf
(115 pages)
Specifications of MAX9888EWY+T
Output Type
3-Channel with Stereo Headphones
Max Output Power X Channels @ Load
1.37W x 2 @ 8 Ohm; 40mW x 2 @ 16 Ohm
Voltage - Supply
2.8 V ~ 5.5 V
Features
Depop, Differential Inputs, I²S, Microphone, Mute, Shutdown
Mounting Type
Surface Mount
Package / Case
63-WLP
For Use With
MAX9888EVKIT+ - KIT EVALUATION FOR MAX9888
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Stereo Audio CODEC
with FLEXSOUND Technology
Table 3. Microphone Input Registers (continued)
Figure 7. Line Input Block Diagram
62
The device includes two sets of line inputs (Figure 7).
Each set can be configured as a stereo single-ended
input or as a mono differential input. Each input includes
adjustable gain to match a wide range of input signal
levels. If a custom gain is needed, the external gain
mode provides a trimmed feedback resistor. Set the gain
REGISTER
INA1/
EXTMICP
INA2/
EXTMICN
INB1
INB2
INABYP
0x48
BIT
7
4
1
0
PGAINA:
+20dB TO -6dB
PGAINA:
+20dB TO -6dB
PGAINB:
+20dB TO -6dB
PGAINB:
+20dB TO -6dB
MIC2BYP
RECBYP
SPKBYP
INABYP
NAME
INADIFF
INBDIFF
INA_/EXTMIC_ to MIC1_ Bypass Switch
0 = Disabled
1 = Enabled
MIC1_ to MIC2_ Bypass Switch
0 = Disabled
1 = Enabled
See the Output Bypass Switches section.
Line Inputs
MIXOUT1
MIXOUT2
MIXOUT3
MIX
MIX
MIX
by choosing the appropriate input resistor and using the
following formula:
The external gain mode also allows summing multiple
signals into a single input, by connecting multiple input
resistors as show in Figure 8, and inputting signals larger
than 1V
Figure 8. Summing Multiple Input Signals into INA/INB
INPUT 1
INPUT 2
INPUT 1
INPUT 2
RIGHT
RIGHT
LEFT
LEFT
P-P
.
DESCRIPTION
AV
PGAIN
INA1/EXTMICP
INA2/EXTMICN
= 20 x log (20K/RIN)
VCM
VCM
20kI
20kI
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