Rainbow Electronics MAX9860 - Manual (Page 11)

MAX9860
16-Bit Mono Audio Voice Codec
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0dBFS FFT (MICL TO ADC)
MAX9860 toc19
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dB)
3 2 1
-120
-100
-80
-60
-40
-20
0
20
-140
0 4
MCLK = 13MHz
LRCLK = 8kHz
PLL ENABLED
-60dBFS FFT (MICL TO ADC)
MAX9860 toc20
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dB)
3 2 1
-120
-100
-80
-60
-40
-20
0
20
-140
0 4
MCLK = 13MHz
LRCLK = 8kHz
PLL ENABLED
0dBFS FFT (MICL TO ADC)
MAX9860 toc21
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dB)
15 10 5
-120
-100
-80
-60
-40
-20
0
20
-140
0 20
MCLK = 12.288MHz
LRCLK = 48kHz
PLL DISABLED
-60dBFS FFT (MICL TO ADC)
MAX9860 toc22
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dB)
15 10 5
-120
-100
-80
-60
-40
-20
0
20
-140
0 20
MCLK = 12.288MHz
LRCLK = 48kHz
PLL DISABLED
-5dBFS WIDEBAND FFT (DAC TO HP)
MAX9860 toc23
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dB)
1000 100 10 1
-80
-60
-40
-20
0
20
-100
0.1 10,000
MCLK = 13MHz
LRCLK = 8kHz
PLL DISABLED
R
L = 32 Ω
-60dBFS WIDEBAND FFT (DAC TO HP)
MAX9860 toc24
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dB)
1000 100 10 1
-80
-60
-40
-20
0
20
-100
0.1 10,000
MCLK = 13MHz
LRCLK = 8kHz
PLL DISABLED
R
L = 32 Ω
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9860 toc25
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
1.90 1.85 1.80 1.75 1.70
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0
1.65 1.95
I AVDD
I
DVDD
+ I
DVDDIO
FULL-DUPLEX 8kHz MODE
DAC DIGITAL FILTER
FREQUENCY RESPONSE, 8kHz
MAX9860 toc26
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dBFS)
1 0.1
-80
-70
-60
-50
-40
-30
-20
-10
0
10
-90
0.01 10
ELLIPTICAL FOR 8kHz GSM WITH
NOTCH AT 217Hz
ADC DIGITAL FILTER
FREQUENCY RESPONSE, 8kHz
MAX9860 toc27
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dBFS)
1 0.1
-80
-70
-60
-50
-40
-30
-20
-10
0
10
-90
0.01 10
ELLIPTICAL FOR 8kHz GSM WITH
NOTCH AT 217Hz
Typical Operating Characteristics (continued)
(V
AVDD
= +1.8V, V
DVDD
= V
DVDDIO
= +1.8V, R
L
= ∞, headphone load (R
L
) connected between OUTP and OUTN, C
REF
= 2.2µF,
C
PREG
= C
REG
= 1µF, C
MICBIAS
= 1µF A
VMICPGA
= 0dB, A
VPRE
= +20dB, MCLK = 13MHz, T
A
= +25°C, unless otherwise noted.)