Rainbow Electronics MAX9867 - Manual (Page 18)

MAX9867
Ultra-Low Power Stereo Audio Codec
18 ______________________________________________________________________________________
DAC IIR HIGHPASS FILTER
FREQUENCY RESPONSE, MODE = 0
MAX9867 toc46
FREQUENCY (Hz)
AMPLITUDE (dB)
220 520 320 420 120
-40
0
-20
-80
-60
20
-100
20
DVFLT = 0
DVFLT = 3
DVFLT = 4
LRCLK = 8kHz
MODE = 0
DAC IIR HIGHPASS FILTER
FREQUENCY RESPONSE, MODE = 0
MAX9867 toc47
FREQUENCY (Hz)
AMPLITUDE (dB)
220 520 320 420 120
-40
0
-20
-80
-60
20
-100
20
AVFLT = 0
AVFLT = 3
AVFLT = 4
LRCLK = 8kHz
DAC IIR/FIR LOWPASS FILTER
FREQUENCY RESPONSE (8kHz)
MAX9867 toc48
AMPLITUDE (dB)
-30
0
-20
-70
-50
10
-10
-60
-40
20
-80
MODE = 0
MODE = 1
3.0 3.3 3.6 3.9
FREQUENCY (kHz)
4.0 3.1 3.4 3.5 3.8 3.2 3.7
ADC IIR/FIR LOWPASS FILTER
FREQUENCY RESPONSE (8kHz)
MAX9867 toc49
AMPLITUDE (dB)
-40
10
-20
-80
-60
20
-100
MODE = 0
MODE = 1
3.0 3.3 3.6 3.9
FREQUENCY (kHz)
4.0 3.1 3.4 3.5 3.8 3.2 3.7
SHUTDOWN TO DAC FULL OPERATION
(CAPACITORLESS OR DIFFERENTIAL MODE)
MAX9867 toc50
TIME (4ms/div)
LOUTP (500mV/div)
SCL (2V/div)
SHUTDOWN TO DAC FULL OPERATION
(CLICKLESS SINGLE-ENDED MODE)
MAX9867 toc51
TIME (40ms/div)
LOUTP (500mV/div)
SCL (2V/div)
SHUTDOWN TO DAC FULL OPERATION
(FAST TURN-ON SINGLE-ENDED MODE)
MAX9867 toc52
TIME (4ms/div)
LOUTP (500mV/div)
SCL (2V/div)
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.)