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TEA7532 |
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| Part Number | TEA7532 |
| Manufacturer | STMicroelectronics (https://www.st.com/) |
| Description | This 16 pins IC is designed for monitor (loudspeaker) telephone set and provides : a) Signal amplification for monitoring (loudspeaker) b) Antiacoustic feedback (antilarsen) c) Antidistortion by autom... |
| Features |
of each exist in different frequency bands.
To extract the larsen component, the microphone signal is first filtered by a second order filter (formed Figure 16.
by two first order filters), then amplified and rectified in order to produce the AGC control signal.
Zin : 4 kΩ A=
V7
V5 – V6 = 15 The first filter is generated by the capacitors on pins 5 and 6 ; the second filter by the R-C network on pin 7. 8/16 TEA7532 Figure 17 : Antilarsen System Filter Response. Filter on pins 5 & 6 f2 = C9 + C10 2π Zin C9 C10 Filter on pin 7 f1 = 1 2π (R5 + R6) C5 1 2π R5 C5 f3 = Antilarsen system F... |
| Document |
 TEA7532 Data Sheet
PDF 201.93KB |
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