SSM2404 Ver la hoja de datos (PDF) - Analog Devices
Número de pieza
componentes Descripción
Fabricante
SSM2404 Datasheet PDF : 8 Pages
| |||
SSM2404
The circuit was tested with an SSM2131 high slew rate audio
amplifier and the results are shown in Figures 24 and 25. This
configuration yields excellent THD performance that is
primarily determined by the amplifier. Also, the headroom is
now +24 dBu (0 dBu = 0.775 V rms), which is due to the
amplifier’s output voltage swing. Thus, even though the
SSM2404 has a ± 12 V limitation on its supplies, it can be used
in systems with much higher voltage ranges. For example, the
double-pole double-throw switch from Figure 22 can be
reconfigured in the virtual ground mode to allow higher voltage
swings, as shown in Figure 26. This application realizes the
excellent performance of Figures 24 and 25 while providing a
low cost switching solution.
+12V
R1
AUDIO 5kΩ
IN
1N914
SSM2404
SW1 A
1
3
SW1 B
R2
5kΩ
+18V
SSM2131
AUDIO
OUT
–12V
–18V
Figure 23. Virtual Ground Switching
Figure 24. Virtual Ground Switch THD+N vs. Frequency
(VS = ±12 V, VA = 2 V rms, with 80 kHz Filter)
Figure 25. Virtual Ground Switch Headroom (VS = ±12 V
for SSM2404; VS = ±18 V for Op Amp, f = 1 kHz, with
80 kHz Filter)
LINA
LINB
5kΩ
5kΩ
SWA/SWB
RINA
5kΩ
V+
17
SSM2404
10
8
SW2
1
3
SW1
6
SW2 CONTROL
2
15
AGND
SW3 CONTROL
9
4
DGND
12
5
SW1 CONTROL
19
16
SW4 CONTROL
11
13
SW3
RINB
5k Ω
20
18
SW4
14
V–
5k Ω
LOUT
SSM2131
5k Ω
ROUT
SSM2131
Figure 26. Double-Pole, Double-Throw Stereo Switch
Using Virtual Ground Operation
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
Mini-DIP (P Suffix)
20
PIN 1
1
0.210
(5.33)
MAX
0.200 (5.05)
0.125 (3.18)
0.022 (0.558)
0.014 (0.356)
1.060 (26.90)
0.925 (23.50)
0.100 (2.54)
BSC
11
0.280 (7.11)
0.240 (6.10)
10
0.060 (1.52)
0.015 (0.38)
0.325 (8.25)
0.300 (7.62)
0.150
(3.81)
MIN
0.015 (0.381)
0.008 (0.204)
0.195 (4.95)
0.115 (2.93)
0.070 (1.77) SEATING
0.045 (1.15) PLANE
20
PIN 1
1
SOIC (S Suffix)
0.5118 (13.00)
0.4961 (12.60)
11
0.2992 (7.60)
0.2914 (7.40)
0.4193 (10.65)
0.3937 (10.00)
10
0.0500 (1.27)
BSC
0.1043 (2.65)
0.0926 (2.35)
0.0291
0.0098
(0.74)
(0.25)
X
45°
0°- 8°
0.0118 (0.30)
0.0040 (0.10)
0.0192 (0.49)
0.0138 (0.35)
0.0125 (0.32)
0.0091 (0.23)
0.0500 (1.27)
0.0157 (0.40)
–8–
REV. B
Share Link: 