Rainbow Electronics MAX9867 - Manual (Page 19)

MAX9867
Ultra-Low Power Stereo Audio Codec
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FULL OPERATION TO SHUTDOWN (DAC)
MAX9867 toc53
TIME (1ms/div)
LOUTP (500mV/div)
SCL (2V/div)
ADC SOFT-START
MAX9867 toc54
TIME (4ms/div)
ADC OUT (500mV/div)
SCL (2V/div)
TOTAL HARMONIC DISTORTION + NOISE
vs. MCLK FREQUENCY, 0dBFS
MAX9867 toc55
MCLK FREQUENCY (MHz)
THD+N (dB)
20 15 40 50 25 55 45
-50
-40
-30
-80
-90
-70
-60
-20
-10
0
-100
10 60 30 35
LRCLK = 48kHz
PLL MODE
DYNAMIC RANGE vs. MCLK FREQUENCY
MAX9867 toc56
MCLK FREQUENCY (MHz)
DYNAMIC RANGE (dB)
90
100
70
80
110
120
60
10 100
V IN = -60dBFS
LRCLK = 48kHz
PLL MODE
A-WEIGHTED
LINE INPUT RESISTANCE vs. GAIN SETTING
MAX9867 toc57
GAIN SETTING (dB)
INPUT RESISTANCE (k
Ω
)
170
220
70
120
270
20
-6 4 14 24 -1 9 19
AUX CODE vs. INPUT VOLTAGE
MAX9867 toc58
INPUT VOLTAGE (V)
AUX CODE (SIGNED DECIMAL)
20,000
25,000
10,000
15,000
0
5000
30,000
-5000
-0.4 0.8 0.2 1.2 0.6 0.4 0 1.0 -0.2
Typical Operating Characteristics (continued)
(V AVDD = V DVDD = V PVDD = +1.8V, C REF = 2.2μF, C MICBIAS = C PREG = C REG = 1μF, AV MICPGA = 0dB, MCLK = 13MHz, LRCLK =
8kHz, BW = 20Hz to f
S
/2, T
A
= +25°C, unless otherwise noted.)