TEA1118 View Datasheet(PDF) - Philips Electronics
Part Name
Description
View to exact match
TEA1118 Datasheet PDF : 24 Pages
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Philips Semiconductors
Versatile cordless transmisssion circuit
Product specification
TEA1118; TEA1118A
FEATURES
• Low DC line voltage; operates down to 1.6 V (excluding
polarity guard)
• Voltage regulator with adjustable DC voltage
• Provides a supply for external circuits
• Symmetrical high impedance transmit inputs (62.5 kΩ)
with large signals handling capabilities [up to
1 V (RMS value) with less than 2% THD]
• Receive amplifier for dynamic, magnetic or
piezoelectric earpieces
• AGC line loss compensation for transmit and earpiece
amplifiers
• DTMF input with confidence tone (TEA1118A only)
• MUTE input for pulse or DTMF dialling (TEA1118A only)
• Transmit mute function, also enabling the DTMF input
(TEA1118A only).
GENERAL DESCRIPTION
The TEA1118 and TEA1118A are bipolar integrated
circuits that perform all speech and line interface functions
required in cordless telephone base stations. The ICs
operate at a line voltage down to 1.6 V DC (with reduced
performance) to facilitate the use of telephone sets
connected in parallel.
The TEA1118A offers in addition to the TEA1118
electronic switching between speech and dialling.
Moreover the transmit amplifier can be disabled during
speech condition by means of a transmit mute function.
All statements and values refer to all versions unless
otherwise specified.
APPLICATIONS
• Cordless telephone base stations
• Fax machines
• Answering machines.
QUICK REFERENCE DATA
Iline = 15 mA; VEE = 0 V; RSLPE = 20 Ω; AGC pin connected to VEE; Zline = 600 Ω; f = 1 kHz; Tamb = 25 °C;
unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
Iline
line current operating range
normal operation
with reduced performance
VLN
ICC
VCC
Gvtrx
∆Gvtrx
DC line voltage
internal current consumption
supply voltage for peripherals
typical voltage gain range
transmit amplifier (TEA1118A only)
transmit amplifier (TEA1118 only)
receive amplifier
gain control range for transmit and
receive amplifiers with respect to
Iline = 15 mA
VCC = 2.9 V
IP = 0 mA
VTX = 200 mV (RMS)
VTX = 200 mV (RMS)
VIR = 4 mV (RMS)
Iline = 75 mA
MIN.
11
1
3.35
−
−
−
5.3
19
−
TYP.
−
−
3.65
1.15
2.9
−
−
−
5.8
MAX.
140
11
3.95
1.4
−
UNIT
mA
mA
V
mA
V
11.3 dB
11.3 dB
31
dB
−
dB
1997 Jul 14
2
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