Datasheet

Maxim Integrated │ 85
MAX98090 Ultra-Low Power Stereo Audio Codec
www.maximintegrated.com
Figure 5. Analog Audio Input Functional Diagram
Audio Input Conguration
The device features either six (WLP package) or four
(TQFN package) flexible analog inputs. Each pair can
be configured as either an analog microphone input, a
single-ended or differential line input(s), or as a reduced
power, full-scale differential analog input direct to the ADC
mixer. The analog microphone and line inputs can either
be routed to the stereo ADC mixer for recording or directly
to any analog output mixer for playback.
MBEN
PA1EN[1:0] EXTMIC[0]
PCLK
MBVSEL[1:0]
MIC 1
INPUT
MUX
MICBIAS
MICROPHONE
BIAS
GENERATOR
MICCLK[2:0]
DIGMICL
DIGITAL
MICROPHONE
CONTROL
MIC 1
PREAMP
PGAM1[4:0]
0dB TO 20dB
0dB TO 20dB
-6dB TO 20dB
-6dB TO 20dB
IN1-IN2
IN3-IN4
IN5-IN6
LINE A
LINE B
MIC 1
MIC 2
IN1-IN2
IN3-IN4
IN5-IN6
LINE A
LINE B
MIC 1
MIC 2
ADLEN ADRENADCHP
OSR128
ADCDITHER
MIC 1
PGA
MIC 2
INPUT
MUX
MIC 2
PREAMP
ZDENB
PA2EN[1:0]
EXTMIC[1] PGAM2[4:0]
LINEAEN
EXTBUFA
IN1SEEN
IN3SEEN
IN5SEEN
IN34DIFF
IN2SEEN
IN4SEEN
IN6SEEN
IN65DIFF
LINBPGA[2:0]
LINE A
PGA
LINE B
PGA
LINEBEN
EXTBUFB
LINAPGA[2:0]
LINE A
INPUT
MIXER
MIXG135
MIXG246
LINE B
INPUT
MIXER
ADC
LEFT
MIXER
ADC
RIGHT
MIXER
MIC 2
PGA
IN1-IN2
IN5-IN6
IN1/DMD
IN3
IN4
IN5
IN6
(WLP ONLY)
IN2/DMC
DIGITAL
MIC DATA
LEFT MUX
DIGITAL
MIC DATA
LEFT MUX
IN3-IN4
IN5-IN6
IN3
IN1
IN3-IN4
IN5
IN4
IN2
IN6-IN5
IN6
ANALOG
OUTPUT
MIXERS
MIXADL[6:0]
MIXADR[6:0]
DIGMICR
DMDL DMDRADCL
ADC
LEFT
ADC
RIGHT
ADCR
FLEXSOUND
TECHNOLOGY
DSP
MAX98090
0dB
10dB
30dB
0dB
10dB
30dB