tea1085t NXP Semiconductors, tea1085t Datasheet - Page 4

• Manufacturer Part Number: tea1085t
• Description: Listening-in Circuit For Line-powered Telephone Sets
• Manufacturer: NXP Semiconductors

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(1) To TEA1060 (SLPE).
(2) See Fig.16.
(1)
(1)
GSC1 8
GSC2 7
V SS 1
V BB 24
SIC 17
PD 19
VA 18
TEA1060
(LN)
V BB
line
I-STABILIZATION
LOGIC GAIN
CONTROL
SREF
4
4
PEAK AND
CURRENT
SUPPLY
LIMITER
PD
(1)
SUP
2
23
DLC
2
2
2
SDC
3
(1)
14
THL1
(2)
MUTE
20
RECEIVING
AMPLIFIER
Fig.1 Block diagram.
LARSEN
LIMITER
LEVEL
MUTE
13
THL2
V BB
5
LSI1
12
LLC
6
LSI2
16
DCA
TEA1060 (V EE )
TEA1060 (Q R )
TEA1085A
TEA1085
15
DTI
QLA
11
(1)
PREAMPLIFIER
LEVEL LIMITER
AMPLIFIER
POWER
LARSEN
CIRCUIT
START
MGR032
10
21
22
9
LAI
LAI
QLS1
QLS2
V BB
(1)
TEA1060
TEA1060
(MIC)
(MIC)