Rainbow Electronics MAX9867 - Manual (Page 15)

MAX9867
Ultra-Low Power Stereo Audio Codec
______________________________________________________________________________________ 15
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY (LINE IN TO HEADPHONE)
MAX9867 toc19
FREQUENCY (Hz)
THD+N (dB)
100 10,000
-50
-40
-30
-80
-70
-60
-20
-10
0
-90
10 1000 100,000
LINE IN PREAMP = +18dB
R
LOAD = 32 Ω
DIFFERENTIAL MODE
5mW
20mW
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY (LINE IN TO HEADPHONE)
MAX9867 toc20
FREQUENCY (Hz)
THD+N (dB)
100 10,000
-50
-40
-30
-80
-70
-60
-20
-10
0
-90
10 1000 100,000
LINE IN PREAMP = +18dB
R
LOAD = 32 Ω
DIFFERENTIAL MODE
5mW
20mW
POWER OUT vs. HEADPHONE LOAD
MAX9867 toc21
HEADPHONE LOAD ( Ω)
POWER OUT (mW)
10
40
50
10
20
30
60
0
1 100 1000
MCLK = 12.288MHz
LRCLK = 48kHz
THD+N = < 0.1%
DIFFERENTIAL MODE
POWER OUT vs. HEADPHONE LOAD
MAX9867 toc22
HEADPHONE LOAD ( Ω)
POWER OUT (mW)
10
20
25
5
10
15
30
0
1 100 1000
MCLK = 12.288MHz
LRCLK = 48kHz
THD+N = < 0.1%
CAPACITORLESS MODE
POWER OUT vs. HEADPHONE LOAD
MAX9867 toc23
HEADPHONE LOAD ( Ω)
POWER OUT (mW)
10
20
5
10
15
25
0
1 100 1000
MCLK = 12.288MHz
LRCLK = 48kHz
THD+N = < 0.1%
SINGLE-ENDED MODE
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY (MICROPHONE TO ADC)
MAX9867 toc24
FREQUENCY (Hz)
THD+N (%)
1000 100
-50
-40
-30
-80
-70
-60
-20
-10
0
-90
10 10,000
MCLK = 13MHz
LRCLK = 8kHz
MICPRE = 0dB
V
IN = 1V P-P
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY (MICROPHONE TO ADC)
MAX9867 toc25
FREQUENCY (Hz)
THD+N (%)
1000 100
-50
-40
-30
-80
-70
-60
-20
-10
0
-90
10 10,000
MCLK = 13MHz
LRCLK = 8kHz
MICPRE = 20dB
V
IN = 0.11V P-P
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY (MICROPHONE TO ADC)
MAX9867 toc26
FREQUENCY (Hz)
THD+N (%)
1000 100
-50
-40
-30
-80
-70
-60
-20
-10
0
-90
10 10,000
MCLK = 13MHz
LRCLK = 8kHz
MICPRE = 30dB
V
IN = 0.032V P-P
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (DAC TO HEADPHONE)
MAX9867 toc27
FREQUENCY (Hz)
PSRR (dB)
100 10,000
-50
-40
-30
-80
-70
-60
-20
-10
0
-90
10 1000 100,000
V RIPPLE = 100mV P-P
MCLK = 13MHz
LRCLK = 8kHz
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.)