TEA1095 Philips Semiconductors, TEA1095 Datasheet - Page 10

• Manufacturer Part Number: TEA1095
• Description: Voice switched speakerphone IC
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1997 Nov 25
handbook, full pagewidth
handbook, full pagewidth
Voice switched speakerphone IC
(1) When MUTETX = HIGH +10 A is forced. When MUTERX = HIGH 10 A is forced.
SIGNAL ENVELOPE
NOISE ENVELOPE
INPUT SIGNAL
A: 85 dB/ms
B: 0.7 dB/ms
B: 0.7 dB/ms
C: 0.07 dB/ms
TENV
TNOI
RENV
RNOI
MUTETX
ATTEN-
UATOR
C
13 mV
13 mV
V dt
A
Fig.7 Signal and noise envelope waveforms.
4 mV (RMS)
36 mV
DUPLEX CONTROLLER
36 mV
Fig.8 Decision logic.
10
x
x
1
x
0
B
B
1
0
x
x
x
1 mV (RMS)
LOGIC
(note 1)
1
0
0
1
0
1
x
x
0
x
10 A
10 A
10 A
0
0
C
V ref
A
SWT
IDT
MBG354
MBG353
time
B
B
Product specification
R IDT
C SWT
TEA1095