參數(shù)資料
型號: PMB2347
廠商: INFINEON TECHNOLOGIES AG
元件分類: PLL合成/DDS/VCOs
英文描述: PLL FREQUENCY SYNTHESIZER, 2800 MHz, PDSO20
封裝: PLASTIC, TSSOP-20
文件頁數(shù): 3/35頁
文件大?。?/td> 578K
代理商: PMB2347
Functional Description
3 - 4
PMB 2347
preliminary
Wireless Components
Specification, August 1999
10
CLK
3-Wire bus input: Clock
Clock input of the serial
control interface with
Schmitt-Trigger input
stage
11
LD/fo
Lock detector output
Unipolar output of the
phase detector in the
form of a pulse-width
modulated signal. In the
locked state the output
signal is at H-level. In
standby mode the output
is resistive.
For test purpose the push
pull output fo is enabled.
12
Rext
CP& Prescaler refer-
ence current setting
External resistor for CP &
Prescaler reference cur-
rent setting.
13
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.
14
GND2
Ground for bipolar cir-
cuitry
ESD
*2pF
560
75k
Serial Control Input Equivalent
EN
10
ESD
*2pF
LD/fo
LD as Lock Detector
11
OSW Output Equivalent
ESD
2pF
Rext
12
560
ESD
2pF
STDBY
/STDBY
RI
500K
13
RI Input Equivalent
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