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參數(shù)資料
| 型號(hào)： | UMA1017M |
| 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, 1250 MHz, PDSO20 |
| 封裝： | PLASTIC, SOT-266-1, SSOP-20 |
| 文件頁(yè)數(shù)： | 2/16頁(yè) |
| 文件大?。?/td> | 171K |
| 代理商： | UMA1017M |
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1995 Jul 10
2
Philips Semiconductors
Product specification
Low-voltage frequency synthesizer
for radio telephones
UMA1017M
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
900 MHz mobile telephones
Portable battery-powered radio equipment.
GENERAL DESCRIPTION
The UMA1017M 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
1.25 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
and V
DD2
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.
7.7
10
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
50
3
30
5.5
1250
40
+85
V
mA
μ
A
MHz
MHz
kHz
°
C
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
UMA1017M
SSOP20
plastic shrink small outline package; 20 leads; body width 4.4 mm
SOT266-1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UMA1018M | Low-voltage dual frequency synthesizer for radio telephones |
| UMA1019AM | Low-voltage frequency synthesizer for radio telephones |
| UMA1020 | Low-voltage dual frequency synthesizer for radio telephones |
| UMA1020AM | Low-voltage dual frequency synthesizer for radio telephones |
| UMA1020M | Low-voltage dual frequency synthesizer for radio telephones |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UMA1018M | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage dual frequency synthesizer for radio telephones |
| UMA1018M/C3 | 制造商:NXP Semiconductors 功能描述: |
| UMA1019AM | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage frequency synthesizer for radio telephones |
| 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 |
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