TEA1095 Philips Semiconductors, TEA1095 Datasheet - Page 4

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

Philips Semiconductors
BLOCK DIAGRAM
1997 Nov 25
handbook, full pagewidth
Voice switched speakerphone IC
to loudspeaker
amplifier
C TSEN
C TENV
C TNOI
C RNOI
C RENV
C RSEN
V BB
R MIC
R RSEN
R GARX
R TSEN
C TXIN
7
13
15
18
24
23
22
19
20
21
4
5
1
V BB
PD
TSEN
TENV
TNOI
RNOI
RENV
RSEN
GARX
RXOUT
MUTERX
MUTETX
TXIN
BUFFER
BUFFER
BUFFER
V
LOG
BUFFER
LOG
I
V
RECEIVE CHANNEL
ATTEN-
UATOR
TRANSMIT CHANNEL
DUPLEX CONTROLLER
13 mV
I
Fig.1 Block diagram.
V dt
TEA1095
13
mV
4
2
LOGIC
SWITCH
CONTROL
VOICE
VOLUME
I
I
V
V
TXGND
TXOUT
V ref
GATX
STAB
RXIN
SWR
GND
SWT
VOL
IDT
MBG350
17
16
14
12
11
10
6
9
2
8
R GATX
Product specification
R STAB
R SWR
R VOL
R IDT
from transmission
circuit
to transmission
circuit
TEA1095
C SWT