AK2358F Datasheet, PDF (12/26 Pages) Asahi Kasei Microsystems – Base-band LSI for Europian Cordless Telephones(CTI, CTI+)

ASAHI KASEI
I
1) TX system
f=lkHz
TXINO
Level Diagram
UK
MOdu I ator
~
[AK2358FI
I
Uoo
dB)
10
........
0
...........
-lo
.......
.......
.
.
.
- 3 . SdBx(USK s i g n a l l e v e l )
. ^{-6.3dBx(reference l e v e l )}
“--- . . . . . . . . . . . . . .
-al
.......... .
-Z3.WBX
-26.5,8X
-30
-40
-50
-60
.........
....................... _..........
I _{....................}
-70
. . . . . . _t. . . . . . . . . . . . . . _{. . . . . . . . . . . . . . . . . . . . . . .}
-w
.....................
-90
.......................
2) RX system
f-1 kHz
RXINO
EXPOUT
RX*F
DEM_{a~~’HO’;dBHp’’’;terH’’’”)=} ^BUFOP
-5,0
dBx
10 ^{. . . . . . . . .}
0
.
.
I -I
$dBx(max. o u t p u t l e v e l )
/
-10
10
-al ““
20
-25
-2
.~ F
Ni
-lo . . ...--”-
.....
[..
.
“-.. _{‘- . . . .}
. . . .. .. .
22
I
-4dBx(referenca I eve I )
/
.34,Bx
-40 ~~~~~~
-45 ^/ ;
-44dBx
-50
~“
I
I
vote) The dBx is standardized unit valid for var _{Ous pOwer supply vOltages frOm 1 . 9 tO}
5.5V. [f the voltage is 2V, O d B x should be _{5dBm. With the other ioltage as X [v:,}
OdBx = 5 I 20 log (X 2) dllm:.
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