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TEA1118A View Datasheet(PDF) - Philips Electronics

Part Name
Description
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TEA1118A
Philips
Philips Electronics Philips
TEA1118A Datasheet PDF : 24 Pages
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Philips Semiconductors
Versatile cordless transmisssion circuit
Product specification
TEA1118; TEA1118A
Receive amplifier (pins IR, GAR and QR)
The receive amplifier has one input (IR) and one output
(QR). The input impedance between pins IR and VEE is
20 k. The voltage gain from pin IR to pin QR is set at
31 dB. The gain can be decreased by connecting an
external resistor RGAR between pins GAR and QR; the
adjustment range is 12 dB. Two external capacitors CGAR
(connected between GAR and QR) and CGARS (connected
between GAR and VEE) ensure stability.
The CGAR capacitor provides a first-order low-pass filter.
The cut-off frequency corresponds to the time constant
CGAR × (RGARint // RGAR). RGARint is the internal resistor
which sets the gain with a typical value of 100 k. The
condition CGARS = 10 × CGAR must be fulfilled to ensure
stability.
Automatic gain control is provided on this amplifier for line
loss compensation.
handbook, full pagewidth
Rline
Iline
Rexch
LN
TEA1118
TEA1118A
Ish
Vexch
ISLPE
SLPE
RSLPE
20
RCC
619
from preamp
I*
VCC
ICC
REG
CREG
4.7 µF
VEE
Fig.7 Supply configuration.
Ip
CVCC
100 µF
peripheral
circuits
MBH274
1997 Jul 14
8
 

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