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參數(shù)資料
| 型號： | UMA1021M |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | XO, clock |
| 英文描述： | Low-voltage frequency synthesizer for radio telephones |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 2200 MHz, PDSO20 |
| 封裝： | 4.40 MM, PLASTIC, SOT-266-1, SSOP-20 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 107K |
| 代理商： | UMA1021M |
1999 Jun 17
4
Philips Semiconductors
Product specification
Low-voltage frequency synthesizer
for radio telephones
UMA1021M
PINNING
SYMBOL
PIN
DESCRIPTION
FAST
1
enable input for fast charge-pump
output CPF
fast charge-pump output
normal charge-pump output
power supply 2
ground 3
2 GHz main divider input
ground 2
digital input to select polarity of
power-on inputs (PON and sPON):
POL = 0 for active LOW and
POL = 1 for active HIGH
power-on input
ground 1
programming bus clock input
programming bus data input
programming bus enable input
power supply 1
complementary crystal frequency
input from TCXO; if not used should
be decoupled to ground
crystal frequency input from TCXO;
if not used should be decoupled to
ground
ground for charge-pump
supply for charge-pump
external resistor from this pin to
ground sets the charge-pump
currents
out-of-lock detector output
CPF
CP
V
DD2
V
SS3
RFI
V
SS2
POL
2
3
4
5
6
7
8
PON
V
SS1
CLK
DATA
E
V
DD1
XTALB
9
10
11
12
13
14
15
XTALA
16
GND(CP)
V
CC
I
SET
17
18
19
LOCK
20
Fig.2 Pin configuration.
handbook, halfpage
UMA1021M
MBG365
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
FAST
CPF
CP
VDD2
VSS3
RFI
VSS2
POL
PON
VSS1
LOCK
ISET
VCC
GND(CP)
XTALA
XTALB
VDD1
E
DATA
CLK
FUNCTIONAL DESCRIPTION
Main divider
The main divider is clocked at pin RFI by the RF signal
which is AC-coupled from an external VCO. The divider
operates with signal levels from 50 to 225 mV (RMS), and
at frequencies from 300 MHz to 2.2 GHz. It consists of a
fully programmable bipolar prescaler followed by a CMOS
counter. Any divide ratios from 512 to 131071 inclusive
can be programmed.
Reference divider
The reference divider is clocked by the differential signal
between pins XTALA and XTALB. If only one of these
inputs is used, the other should be decoupled to ground.
The applied input signal(s) should be AC-coupled.
The circuit operates with levels from
50 up to 500 mV (RMS) and at frequencies from
3 to 35 MHz. Any divide ratios from 8 to 2047 inclusive
can be programmed.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UMA1021M/C2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IC-SM-FREQ SYNTHESIZER |
| UMA1022M | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low cost dual frequency synthesizer for radio telephones |
| UMA10A | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:ULTRAMITE SURFACE MOUNT 500 Watt Transient Voltage Suppressor 5.0 to 170 V |
| UMA10CA | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:ULTRAMITE SURFACE MOUNT 500 Watt Transient Voltage Suppressor 5.0 to 170 V |
| UMA10N | 制造商:ROHM 制造商全稱:Rohm 功能描述:General purpose (dual digital transistors) |
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