tea1094a NXP Semiconductors, tea1094a Datasheet - Page 4

• Manufacturer Part Number: tea1094a
• Description: Hands Free Ic
• Manufacturer: NXP Semiconductors

Philips Semiconductors
BLOCK DIAGRAM
1996 Jul 15
handbook, full pagewidth
Hands free IC
The pin numbers given in parenthesis are for the TEA1094A.
(1) TEA1094A only.
V BB
C DLC
R MIC
C LSP
R GAR
C TSEN
C RSEN
C MIC
R TSEN
R RSEN
C RENV
C TENV
C RNOI
C TNOI
(7)
(13)
(15)
(18)
(24)
(23)
(22)
(19)
(20)
(21)
(4)
(5)
(1)
10
19
22
28
27
26
23
24
25
5
6
1
MUTET
MIC
RNOI
RENV
RSEN
DLC/MUTER
TSEN
TENV
TNOI
GAR
LSP
V BB
PD
(1)
BUFF
BUFF
BUFF
BUFF
LOG
LOG
DYNAMIC
LIMITER
V
CONTROLLER
V BB
I
13 mV
13 mV
V dt
DUPLEX
ATTENUATOR
MICROPHONE CHANNEL
Fig.1 Block diagram.
V
LOUDSPEAKER CHANNEL
TEA1094A
I
TEA1094
4
LOGIC
SWITCH
VOICE
I
I
V
V
CONTROL
VOLUME
2
V ref
TEA1094; TEA1094A
MICGND
MOUT
STAB
SWT
SWR
RIN2
RIN1
GAT
VOL
GND
IDT
MGE436
(17)
(16)
(14)
(12)
(11)
(10)
21
20
18
16
14
13
(9)
(6)
12
(2)
(3)
(8)
11
8
2
3
Product specification
R GAT
R STAB
R SWR
R VOL
R IDT
C SWT
TEA106x
to TEA106x
from