參數(shù)資料
型號: PMB2349
廠商: INFINEON TECHNOLOGIES AG
英文描述: Optimized RF/IF Dual PLL Frequency Synthesizer
中文描述: 優(yōu)化射頻/中頻雙鎖相環(huán)頻率合成器
文件頁數(shù): 12/35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
OSW Output Equivalent
ESD
2pF
Rext
12
560
ESD
2pF
STDBY
/STDBY
RI
500K
13
RI Input Equivalent
RF/IF
5/16
RFx/IFx
6/15
RF and IF Input Equivalent
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