Datasheet

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−0.5
−1
−1.5
−2
f − Frequency − Hz
−0.25
−0.75
−1.25
−1.75
0
0.5
Closed-Loop Gain − dB
0.25
0.75
130
120
140
Phase − °
150
160
V
DD
= 5 V
R
L
= 8 Ω
P
O
= 0.35 W
C
I
=1 µF
1
170
180
Gain
Phase
10
1
10
2
10
3
10
4
10
5
10
6
− Output Noise Voltage − µV
n
f − Frequency − Hz
20 1 k 10 k
10
1
100
20 k100
V
O
BTL
V
DD
= 3.3 V
BW = 22 Hz to 22 kHz
R
L
= 32 Ω
C
B
=0.1 µF
A
V
= −1 V/V
V
O+
V(rms)
− Output Noise Voltage − µV
n
f − Frequency − Hz
20 1 k 10 k
10
1
100
20 k100
V
DD
= 5 V
BW = 22 Hz to 22 kHz
R
L
= 32 Ω
C
B
=0.1 µF
A
V
= −1 V/V
V
O
BTL
V
O+
V(rms)
TPA321
SLOS312C – JUNE 2000 – REVISED JUNE 2004
CLOSED-LOOP GAIN AND PHASE
vs
FREQUENCY
Figure 18.
OUTPUT NOISE VOLTAGE OUTPUT NOISE VOLTAGE
vs vs
FREQUENCY FREQUENCY
Figure 19. Figure 20.
11