tea1085t NXP Semiconductors, tea1085t Datasheet - Page 22

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

Philips Semiconductors
March 1992
handbook, full pagewidth
Listening-in circuit for line-powered
telephone sets
V LLCO
V LLC
V DTI
(b) Attack delay (t
Larsen release time (t
V
DTI
0.63 V
= 100 mV(RMS) and 1 V(RMS); f = 3 kHz.
ad
200 ms
t ad
), Larsen attack time (t
LAr
Fig.15 Test signals for Larsen level limiter.
);
t LAa
t LAr
LAa
22
),
V LLC
V DTI
(a) Listen-in release time (t
V
DTI
= 100 mV(RMS); f = 3 kHz.
TEA1085; TEA1085A
100 ms
Preliminary specification
t LIr
MGR044
LIr
);