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參數(shù)資料
| 型號： | UMA1021AM |
| 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, PDSO16 |
| 封裝： | 4.40 MM, PLASTIC, SOT-369-1, SSOP-16 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 104K |
| 代理商： | UMA1021AM |
1998 Nov 19
2
Philips Semiconductors
Product specification
Low-voltage frequency synthesizer for
radio telephones
UMA1021AM
FEATURES
Low phase noise
Low current from 3 V supply
Fully programmable main divider
3-line serial interface bus
Independent fully programmable reference divider,
driven from external crystal oscillator
Hard and soft power-down control.
APPLICATIONS
900 MHz and 2 GHz mobile telephones
Portable battery-powered radio equipment.
GENERAL DESCRIPTION
The UMA1021AM BICMOS device integrates a prescaler,
programmable dividers, and a phase comparator to
implement a phase-locked loop.
The device is designed to operate from 3 NiCd cells, in
pocket phones, with low current and nominal 3 V supplies.
The synthesizer operates at RF input frequencies
up to 2.2 GHz with a fully programmable reference divider.
All divider ratios are supplied via a 3-wire serial
programming bus.
Separate power and ground pins are provided to the
analog (charge pump) and digital circuits. The ground
leads should be externally short-circuited to prevent large
currents flowing across the die and thus causing damage.
V
DD1
and V
DD2
must also be at the same potential (V
DD
).
V
CC
must be equal to or greater than V
DD
for wider control
range of the Voltage Controlled Oscillator (VCO),
e.g. V
DD
= 3 V and V
CC
= 5 V.
The charge pump current (phase detector gain) is fixed by
an external resistor at pin I
SET
and controlled via the serial
interface. Only a passive loop filter is necessary; the
charge pump functions within a wide voltage compliance
range to improve the overall system performance.
QUICK REFERENCE DATA
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
10
5
MAX.
UNIT
V
DD1
, V
DD2
V
CC
I
tot
I
tot(pd)
digital supply voltage
analog supply voltage for charge pump V
CC
≥
V
DD
total supply current (I
DD
+ I
CC
)
total supply current in Power-down
mode (I
DD
+ I
CC
)
RF input frequency
crystal reference oscillator input
frequency
phase comparator frequency
operating ambient temperature
V
DD1
= V
DD2
= V
DD
2.7
2.7
5.5
5.5
V
V
mA
μ
A
V
CC
= V
DD
= 5.5 V
logic levels 0 V or V
DD
f
RF
f
xtal
300
3
2200
35
MHz
MHz
f
ph(comp)
T
amb
30
200
+85
kHz
°
C
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
UMA1021AM
SSOP16
plastic shrink small outline package; 16 leads; body width
4.4 mm
SOT369-1
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| UMA1021M | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage frequency synthesizer for radio telephones |
| 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 |
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