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參數資料
| 型號： | 935220640118 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | TELECOM, CORDLESS, BASEBAND CIRCUIT, PDSO16 |
| 封裝： | PLASTIC, SOT-369, SSOP-16 |
| 文件頁數： | 26/27頁 |
| 文件大小： | 226K |
| 代理商： | 935220640118 |
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1997 Jul 14
8
Philips Semiconductors
Product specication
Versatile cordless transmisssion circuit
TEA1118; TEA1118A
Receive amplier (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.
Fig.7 Supply configuration.
handbook, full pagewidth
Ish
ISLPE
REG
LN
SLPE
VEE
VCC
RCC
CVCC
ICC
CREG
RSLPE
Vexch
Rexch
Iline
Rline
TEA1118
TEA1118A
I*
Ip
peripheral
circuits
100
F
4.7
F
20
619
MBH274
from preamp
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