U4089B-P Datasheet, PDF (9/26 Pages) ATMEL Corporation – Monolithic Integrated Feature Phone Circuit

Figure 10. Threshold of Speaker Amplifier
SA _on
U4089B-P
SA _off
IL _off
IL _{on IL}
Figure 11. Comparator Thresholds Depend on DC Mask and Line Impedance
7
RDC = ∞
6
RDC = 130 k
5
RDC = 68 k
4
3
10.0
12.0
14.0
16.0
18.0
20.0
I _L ( mA )
= ILON at line impedance = 600 Ohm
= ILOFF at line impedance = 600 Ohm
= ILON at line impedance = 900 Ohm
= ILOFF at line impedance = 900 Ohm
Absolute Maximum Ratings
Parameters
Line current
DC line voltage
Junction temperature
Ambient temperature
Storage temperature
Total power dissipation, T_amb = 60°C, SSO44
ESD (Human Body Model), ESD S 5.1
Standard
ESD (Machine Model), JEDEC A115A
Symbol
I_L
V_L
T_j
T_amb
T_stg
P_tot
V_ESD
V_ESD
Value
140
12
125
- 25 to + 75
- 55 to + 150
0.9
1.5
150
Unit
mA
V
°C
°C
°C
W
kV
V
Thermal Resistance
Parameters
Junction ambient
Symbol
R_thJA
Value
70
Unit
K/W
9
4518A–CORD–05/02