CS4349 Datasheet, PDF (11/40 Pages) Cirrus Logic – 192 kHz DAC w/ Volume Control and 1 Vrms @ 3.3 V

CS4349
125
CS4349
AOUTx +
3.3 µF
+
Analog
Output
R_L
C_L
GND
Figure 1. Output Test Load
100
75
50
Safe Operating
Region
25
2.5 5
10
15
20
3
Resistive Load -- R_L (kΩ )
Figure 2. Maximum Loading
Figures 3 through 5 show typical THD+N performance for CS4349 devices that exhibit the maximum full scale out-
put voltages as specified in the DAC Analog Characteristics tables (see page 9 and 10). With decreasing VA,
THD+N performance is increasingly affected by the full scale output voltage and temperature, with higher full scale
output voltage and lower temperatures corresponding to lower THD+N performance.
-30
TA = -40° C
TA = 25° C
-40
TA = 85° C
-50
-60
-70
-80
-90
-100
0
-0.5
-1
-1.5
-2
-2.5
-3
Output Amplitude(dB)
Figure 3. THD+N vs Output Amplitude for VA = 5.0 V
-30
TA = -40° C
TA = 25° C
-40
TA = 85° C
-50
-60
-70
-80
-90
-100
0
-0.5
-1
-1.5
-2
-2.5
-3
Output Amplitude(dB)
Figure 4. THD+N vs Output Amplitude for VA = 3.3 V
-30
TA = -40° C
TA = 25° C
-40
TA = 85° C
-50
-60
-70
-80
-90
-100
0
-0.5
-1
-1.5
-2
-2.5
-3
Output Amplitude(dB)
Figure 5. THD+N vs Output Amplitude for VA = 3.14 V
DS782F1
11