TS925AI View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
TS925AI Datasheet PDF : 17 Pages
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Using the TS925 as a preamplifier and speaker driver
Figure 16. Electrical schematic
C1
M ike pream plifier
C9
M IC R O P H O N E
C6
C4
C14
C2
C3
C5
D1
D2
ALC
C7
Q1
Vcc
PHANTOM GROUND
4
8
9
13
C15 C10 C18 C8
C9
TS925
M IKE
OUTPUT
STBY
HEADPHONES
C12
6
7
5
C13
11
10
12
C 10
Headphones am plifier
A M P LIF IE R
IN P U T
LEFT
C 11
A M P LIF IE R
IN P U T
R IG H T
Headphone amplifier
The operators A2 and A3 are organized in a push-pull configuration with a gain of 5. The stereo
inputs can be connected to a CD-player and the TS925 can directly drive the head-phone
speakers. This configuration shows the ability of the circuit to drive 32Ω load with a maximum
output swing and high fidelity suitable for sound and music.
Figure 19 shows the available signal swing at the headset outputs: two other rail-to-rail
competitor parts are employed in the same circuit for comparison (note the much reduced
clipping level and crossover distortion).
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