0.02

0.1

1

6

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

f = 1 kHz

1k

100k

100M

FREQUENCY (Hz)

20

60

90

130

10M

1M

10k

120

80

40

30

50

70

100

110

LM7332

SNOSAV4B – APRIL 2008 – REVISED JANUARY 2016

www.ti.com

Typical Application (continued)

8.2.3 Application Curves

Figure 52. Crosstalk Rejection vs. Frequency

Figure 51. THD+N vs Output Amplitude

9 Power Supply Recommendations

The use of supply decoupling is mandatory in most applications. As with most relatively high-speed or high

output current operational amplifiers, best results are achieved when each supply line is decoupled with two

capacitors: a small value ceramic capacitor (approximately 0.01 µF) placed very close to the supply lead in

addition to a large value tantalum or aluminum capacitor (> 4.7 µF). The large capacitor can be shared by more

than one device if necessary. The small ceramic capacitor maintains low supply impedance at high frequencies

while the large capacitor acts as the charge bucket for fast load current spikes at the operational amplifier output.

The combination of these capacitors provides supply decoupling and helps keep the operational amplifier

oscillation free under any load.

22

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