參數(shù)資料
型號: PMB2349
廠商: INFINEON TECHNOLOGIES AG
元件分類: PLL合成/DDS/VCOs
英文描述: PLL FREQUENCY SYNTHESIZER, 2800 MHz, PQCC24
封裝: PLASTIC, VQFN-24
文件頁數(shù): 4/35頁
文件大?。?/td> 670K
代理商: PMB2349
Functional Description
3 - 5
PMB 2349
preliminary
Wireless Components
Confidential
Specification, May 2000
Table 3-1 Pin Definition and Function (continued)
Pin No.
Symbol
Equivalent I/O-Schematic
Function
12
Rext
CP & Prescaler refer-
ence current setting
External resistor for CP &
Prescaler reference cur-
rent setting.
14
RI
Reference frequency
input
Input with highly sensi-
tive preamplifier. With
small input signals AC
coupling must be set up,
where DC coupling can
be used for large input
signals.
15
GND2
Ground for bipolar cir-
cuitry
16
17
IFX
IF
IF frequency input
(inverted)
IF input with highly sensi-
tive preampifier for PLL2.
AC coupling must be set
up.
IF frequency input
IF input with highly sensi-
tive preampifier for PLL2.
AC coupling must be set
up.
18
GND1
Ground for CMOS cir-
cuitry
O S W O utput E quiva lent
ESD
2pF
Re xt
12
56 0
ESD
2p F
ST D B Y
/S T D B Y
RI
5 00K
13
R I In put E q u iva le nt
RF /IF
5/16
R F x/IF x
6/15
R F and IF Input E quiva lent
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