Philips Semiconductors
Versatile cordless transmisssion circuit
Product specification
TEA1118; TEA1118A
SYMBOL
PARAMETER
CONDITIONS
Automatic gain control (pin AGC)
∆Gvtrx
Istart
gain control range for transmit and
receive amplifiers with respect to
Iline = 15 mA
highest line current for maximum
gain
Iline = 75 mA;
Istop
lowest line current for minimum gain
DTMF amplifier (pin DTMF; TEA1118A only)
Zi
Gvdtmf
input impedance
voltage gain from DTMF to LN
∆Gvdtmf(f)
∆Gvdtmf(T)
Gvct
gain variation with frequency
referenced to 1 kHz
gain variation with temperature
referenced to 25 °C
voltage gain from DTMF to QR
(confidence tone)
VDTMF = 100 mV (RMS);
MUTE or TMUTE = HIGH
f = 300 to 3400 Hz
Tamb = −25 to + 75 °C
VDTMF = 100 mV (RMS);
RL = 150 Ω
Mute function (pin MUTE; TEA1118A only)
VIL
VIH
IMUTE
∆Gtrxm
LOW level input voltage
HIGH level input voltage
input current
gain reduction for transmit and
receive amplifiers
input level = HIGH
MUTE = HIGH
MIN. TYP. MAX. UNIT
−
5.8 −
dB
−
26
−
mA
−
61
−
mA
−
20
−
kΩ
16.2
17.4 18.6
dB
−
±0.2 −
dB
−
±0.4 −
dB
−
−18 −
dB
VEE − 0.4 −
VEE + 1.5 −
−
1.25
−
80
VEE + 0.3 V
VCC + 0.4 V
3
µA
−
dB
1997 Jul 14
15