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DRV632_15 Datasheet, PDF (14/23 Pages) Texas Instruments – DRV632 DirectPath™, 2-VRMS Audio Line Driver With Adjustable Gain | |||
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DRV632
SLOS681B â JANUARY 2011 â REVISED AUGUST 2015
10
Active Filter
Gain = 2V/V
RL = 10 kâ¦
1
Ch1 1 Vrms
Ch1 2 Vrms
10
Active Filter
Gain = 2V/V
RL = 600 â¦
1
www.ti.com
Ch1 1 Vrms
Ch1 2 Vrms
0.1
0.1
0.01
0.01
0.001
0.001
0.0001
20
100
1k
Frequency (Hz)
10k 20k
Figure 12. Total Harmonic Distortion and Noise vs
Frequency
0
RL = 10 kâ¦
VO = 1 Vrms
â20 VREF = 1 V
0.0001
20
100
1k
Frequency (Hz)
10k 20k
Figure 13. Total Harmonic Distortion and Noise vs
Frequency
Left to Right
Right to Left
â40
â60
â80
â100
â120
â140
20
100
1k
Frequency (Hz)
10k 20k
Figure 14. Crosstalk vs Frequency
11 Power Supply Recommendations
The device is designed to operate from an input voltage supply range between 3 V and 3.6 V. This input supply
must be well-regulated. If the input supply is located more than a few inches from the DRV632 device, additional
bulk capacitance may be required in addition to the ceramic bypass capacitors. An electrolytic capacitor with a
value of 47 µF is a typical choice.
Placing a decoupling capacitor close to the DRV632 improves the performance of the line-driver amplifier. An low
equivalent-series-resistance (ESR) ceramic capacitor with a value of 1 µF is a typical choice.
If the DRV632 is used in highly noise-sensitive circuits, TI recommends adding a small LC filter on the VDD
connection.
14
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