![](http://datasheet.mmic.net.cn/Maxim-Integrated-Products/MAX9860ETG-T_datasheet_101878/MAX9860ETG-T_12.png)
Typical Operating Characteristics (continued)
(VAVDD = +1.8V, VDVDD = VDVDDIO = +1.8V, RL =
∞, headphone load (RL) connected between OUTP and OUTN, CREF = 2.2F,
CPREG = CREG = 1F, CMICBIAS = 1F AVMICPGA = 0dB, AVPRE = +20dB, fMCLK = 13MHz, TA = +25°C, unless otherwise noted.)
HEADPHONE STARTUP WAVEFORM
MAX9860
toc28
TIME (4ms/div)
SPK+ -SPK-
(1V/div)
SDA
(2V/div)
HEADPHONE SHUTDOWN WAVEFORM
MAX9860
toc29
TIME (2ms/div)
SPK+ -SPK-
(1V/div)
SDA
(2V/div)
ADC OUTPUT
(500mV/div)
SDA
(2V/div)
SOFT-START ADC
MAX9860
toc30
TIME (4ms/div)
-80
-60
-70
-40
-50
-30
-20
0
-10
10
-100
-80
-90
-60
-70
-40
-50
-20
-30
0
-10
AUTOMATIC GAIN CONTROL THRESHOLDS
MAX9860
toc31
INPUT AMPLITUDE (dBV)
OUTPUT
AMPLITUDE
(dBFS)
-90
-70
-80
-50
-60
-40
-30
-10
-20
0
-100
-80
-60
-40
-20
NOISE GATE THRESHOLDS
MAX9860
toc32
INPUT AMPLITUDE (dBV)
OUTPUT
AMPLITUDE
(dBFS)
TOTAL HARMONIC DISTORTION + NOISE
vs. MCLK FREQUENCY, 0dBFS (DAC to HP)
MAX9860
toc33
MCLK FREQUENCY (MHz)
THD+N
(%)
50
40
30
20
0.01
0.1
1
0.001
10
60
fLRCLK = 8kHz
DYNAMIC RANGE
vs. MCLK FREQUENCY, -60dBFS (DAC to HP)
MAX9860
toc34
MCLK FREQUENCY (MHz)
DYNAMIC
RANGE
(dB)
50
40
30
20
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-120
10
60
fLRCLK = 8kHz
MAX9860
16-Bit Mono Audio Voice Codec
12
Maxim Integrated