CS4350 datasheet(11/41 Pages) CIRRUS

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DS691F1

CS4350

Figures 3 through 5 show typical THD+N performance for CS4350 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.

AOUTx

3.3 µF

Analog

Output

CS4350

GND

100

2.5

510

Safe Operating

Region

Resistive Load -- R (k

Ω )

125

Figure 1. Equivalent Output Load

Figure 2. Maximum Loading

-3

-2.5

-2

-1.5

-1

-0.5

-100

-90

-80

-70

-60

-50

-40

-30

Output Amplitude(dB)

TA = -40° C

TA = 25° C

TA = 85° C

-3

-2.5

-2

-1.5

-1

-0.5

-100

-90

-80

-70

-60

-50

-40

-30

Output Amplitude(dB)

TA = -40° C

TA = 25° C

TA = 85° C

Figure 3. THD+N vs Output Amplitude for VA = 5.0 V

Figure 4. THD+N vs Output Amplitude for VA = 3.3 V

-3

-2.5

-2

-1.5

-1

-0.5

-100

-90

-80

-70

-60

-50

-40

-30

Output Amplitude(dB)

TA = -40° C

TA = 25° C

TA = 85° C

Figure 5. THD+N vs Output Amplitude for VA = 3.14 V

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