Philips Semiconductors
Speech circuit with dialler interface, regulated
supply and earpiece volume control
Product specification
TEA1111A
handbook, full pagewidth
Zline
VEE
RCC
LN
Zbal
Im
IR
RSLPE
Rast1 RA
SLPE
Zir
MBE786
Fig.11 Equivalent circuit of an anti-sidetone network in a Wheatstone bridge configuration.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VLN
positive continuous line voltage
repetitive line voltage during switch-on or
line interruption
VEE − 0.4 12
V
VEE − 0.4 13.2
V
IDD
maximum input current at pin VDD
−
75
mA
VCC
supply voltage
VEE − 0.4 12
V
VMUTE, VVCI maximum voltage on pins MUTE and VCI
VEE − 0.4 VDD + 0.4 V
Vn(max)
maximum voltage on all pins except
pins VDD, MUTE and VCI
VEE − 0.4 VCC + 0.4 V
Iline
line current
RSLPE = 20 Ω; see Fig.12 −
140
mA
Ptot
TEA1111AT total power dissipation
Tamb = 75 °C; see Fig.12 −
416
mW
Tstg
storage temperature
−40
+125
°C
Tamb
ambient temperature
−25
+75
°C
Tj
junction temperature
−
+125
°C
1999 Nov 22
11