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參數(shù)資料
| 型號： | UMA1019AM |
| 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, 1700 MHz, PDSO20 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 134K |
| 代理商： | UMA1019AM |
1995 Jul 07
2
Philips Semiconductors
Product specification
Low-voltage frequency synthesizer
for radio telephones
UMA1019AM
FEATURES
Low current from 3 V supply
Fully programmable RF divider
3-line serial interface bus
Independent fully programmable reference divider,
driven from external crystal oscillator
Dual phase detector outputs to allow fast frequency
switching
Dual power-down modes.
APPLICATIONS
1 to 1.7 GHz mobile telephones
Portable battery-powered radio equipment.
GENERAL DESCRIPTION
The UMA1019AM BICMOS device integrates prescalers,
a programmable divider, and 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 5 V supplies.
The synthesizer operates at RF input frequencies up to
1.7 GHz. The synthesizer has 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 and digital circuits. The ground leads should be
externally short-circuited to prevent large currents flowing
across the die and thus causing damage. Digital supplies
V
DD1
, V
DD2
and V
DD3
must also be at the same potential.
V
CC
must be equal to or greater than V
DD
(i.e. V
DD
= 3 V
and V
CC
= 5 V for wider tuning range).
The phase detector uses two charge pumps, one provides
normal loop feedback, while the other is only active during
fast mode to speed-up switching. All charge pump currents
(gain) are fixed by an external resistance at pin I
SET
(pin 14). Only passive loop filters are used; the
charge-pumps function within a wide voltage compliance
range to improve the overall system performance.
QUICK REFERENCE DATA
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
V
CC
≥
V
DD
MIN.
TYP.
9.4
12
1500
200
MAX.
UNIT
V
CC
, V
DD
I
CC
+ I
DD
I
CCPD
, I
DDPD
f
VCO
f
xtal
f
PC
T
amb
supply voltage
supply current
current in power-down mode per supply
RF input frequency
crystal reference input frequency
phase comparator frequency
operating ambient temperature
2.7
1000
3
30
5.5
1700
40
+85
V
mA
μ
A
MHz
MHz
kHz
°
C
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
UMA1019AM
SSOP20
plastic shrink small outline package; 20 leads; body width 4.4 mm
SOT266-1
相關PDF資料 |
PDF描述 |
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| UMA1020 | Low-voltage dual frequency synthesizer for radio telephones |
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| UMA1020M | Low-voltage dual frequency synthesizer for radio telephones |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| UMA1019M | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage frequency synthesizer for radio telephones |
| UMA1020 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage dual frequency synthesizer for radio telephones |
| UMA1020AM | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage dual frequency synthesizer for radio telephones |
| UMA1020M | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage dual frequency synthesizer for radio telephones |
| UMA1021 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage frequency synthesizer for radio telephones |
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