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TEA1112 View Datasheet(PDF) - Philips Electronics

Part Name
Description
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TEA1112 Datasheet PDF : 20 Pages
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Philips Semiconductors
Low voltage versatile telephone
transmission circuits with dialler interface
Product specification
TEA1112; TEA1112A
SYMBOL
PARAMETER
CONDITIONS
Istop
lowest line current for minimum gain
DTMF amplifier (pin DTMF)
Zi
Gvdtmf
input impedance
voltage gain from DTMF to LN in
DTMF dialling or microphone MUTE
mode
VDTMF = 20 mV (RMS)
Gvdtmf(f) gain variation with frequency
referred to 1 kHz
f = 300 to 3400 Hz
Gvdtmf(T) gain variation with temperature
referred to 25 °C
Tamb = 25 to +75 °C
Gvct
voltage gain from DTMF to QR
VDTMF = 20 mV (RMS);
(confidence tone)
RL = 150
Mute function (pins MUTE; TEA1112 and MUTE; TEA1112A)
VIL
VIH
IMUTE
Gtrxm
LOW level input voltage
HIGH level input voltage
input current
gain reduction for microphone and
receiving amplifiers in DTMF dialling
mode
input level = HIGH
MIN.
TYP. MAX.
61
UNIT
mA
20
k
24.3
25.5 26.7
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 Mar 26
14
 

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