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PDF MB1511 Data sheet ( Hoja de datos )
| Número de pieza | MB1511 | |
| Descripción | Serial Input PLL Frequency Synthesizer | |
| Fabricantes | Fujitsu | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MB1511 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-21309-2E
ASSP
Serial Input PLL Frequency
Synthesizer
MB1511
s DESCRIPTION
The Fujitsu MB1511 is a single chip serial input PLL frequency synthesizer designed for VHF tuner and cellular
telephone applications.
It contains a 1.1 GHz dual modulus prescaler which enables pulse swallow function, and an analog switch to speed
up lock up time.
It operates supply voltage of 3.0 V typ. and dissipates 7 mA typ. of current realized through the use of Fujitsu's unique
U-ESBIC Bi-CMOS technology.
The MB1511 is housed in SSOP package, this enables high integration.
s FEATURES
• Low power supply voltage: VCC = 2.7 to 5.5 V
• High operating frequency: fIN MAX = 1.1 GHz (VIN MIN = –10dBm)
• Pulse swallow function: 64/65 or 128/129
• Low supply current: ICC = 7 mA typ.
• Serial input 18-bit programmable divider consisting of:
Binary 7-bit swallow counter: 0 to 127
Binary 11-bit programmable counter: 16 to 2047
• Serial input 15-bit programmable reference divider consisting of:
Binary 14-bit programmable reference counter: 8 to 16383
1-bit switch counter (SW) sets divide ratio of prescaler
(Continued)
s PACKAGE
20 pin, Plastic SSOP
(FPT-20P-M03)
1
1 page  
MB1511
s FUNCTIONAL DESCRIPTIONS
1. Pulse Swallow Function
The divide ratio is set using the following equation.
fVCO = [(M × N) + A] × fOSC ÷ R
fVCO : Output frequency of external voltage controlled oscillator (VCO)
M : Preset modulus of external dual modulus prescaler (64 or 128)
N : Preset divide ratio of binary 11-bit programmable counter (16 to 2047)
A : Preset divide ratio of binary 7-bit swallow counter (0 ≤ A ≤ 127, A < N)
fOSC : Output frequency of the external reference frequency oscillator
R : Preset divide ratio of binary 14-bit programmable reference counter (8 to 16383)
2. Serial Data Input
Serial data input is achieved by three inputs, such as Data pin, Clock pin and LE pin. Serial data input controls 15-
bit programmable reference divider and 18-bit programmable divider, respectively.
Binary serial data is input to Data pin.
On rising edge of clock shifts one bit of serial data into the internal shift registers and when load enable pin is high
level or open, stored data is transferred into latch depending upon the control bit.
Control data "H" data is transferred into 15-bit latch.
Control data "L" data is transferred into 18-bit latch.
5
5 Page 
MB1511
s ELECTRICAL CHARACTERINSTICS
(VCC = 2.7 V to 5.5 V, Ta = –40°C to +85°C)
Parameter
Symbol
Power supply current*1
Operating frequency
Input sensitivity
High-level input voltage
Low-level input voltage
High-level input current
Low-level input current
Input current
High-level output current
Low-level output current
N-channel open drain
cutoff current
fin*2
OSCIN
fin-1*3
fin-2*4
OSCIN
Except fin and
OSCIN
Data clock
OSCIN
LE, FC
Except DO
and OSCOUT
DO, φP*6
Output current
Except DO
and OSCOUT
Analog switch on resistance
ICC
fIN
fOSC
Vfin1
Vfin2
VOSC
VIH
VIL
IIH
IIL
IOSC
ILE
VOH*5
VOL
IOFF
IOH
IOL
RON
Min.
—
10
—
–4
–10
0.5
VCC×0.7
—
—
—
—
—
2.2
—
—
–1.0
1.0
—
Values
Typ.
7.0
—
12
—
—
—
—
—
1.0
–1.0
±50
–60
—
—
—
—
—
50
Max.
—
1100
20
6
6
—
—
VCC×0.3
—
—
—
—
—
0.4
1.1
—
—
—
Unit
mA
MHz
MHz
dBm
dBm
Vp-p
V
V
µA
µA
µA
µA
V
V
µA
mA
mA
Ω
Notes: *1
*2
*3
*4
*5
*6
fin =1.1 GHz, OSCIN=12 MHz, VCC=3V. Inputs are grounded and outputs are open.
AC coupling. Minimum operating frequency is measured when a capacitor 1000pF.
VCC=4.0 to 5.5V, 50 Ω
VCC=2.7 to 4.0V, 50 Ω
VCC=3V
VP=VCC to 8V, VOOP=GND to 8V
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet MB1511.PDF ] | |
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