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PDF MB15E05L Data sheet ( Hoja de datos )
| Número de pieza | MB15E05L | |
| Descripción | Single Serial Input PLL Frequency Synthesizer On-Chip 1.2 GHz Prescaler | |
| Fabricantes | Fujitsu Media Devices | |
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FUJITSU SEMICONDUCTOR
DATA SHEET
DS04–21354–1E
ASSP
Single Serial Input
PLL Frequency Synthesizer
On-Chip 2.0 GHz Prescaler
MB15E05L
s DESCRIPTION
The Fujitsu MB15E05L is serial input Phase Locked Loop (PLL) frequency synthesizer with a 2.0 GHz prescaler. A
64/65 or a 128/129 can be selected for the prescaler that enables pulse swallow operation.
The latest BiCMOS process technology is used, resuItantly a supply current is limited as low as 4.0 mA typ. This
operates with a supply voltage of 3.0 V (typ.)
Furthermore, a super charger circuit is included to get a fast tuning as well as low noise performance. As a result of
this, MB15E05L is ideally suitable for digital mobile communications, such as DCS 1800 and PCS 1900.
s FEATURES
• High frequency operation: 2.0 GHz max.
• Low power supply voltage: VCC = 2.7 to 3.6 V
• Very Low power supply current : ICC = 4.0 mA typ. (VCC = 3 V)
• Power saving function : IPS = 0.1 µA typ.(VCC = 3 V)
• Pulse swallow function: 64/65 or 128/129
• Serial input 14-bit programmable reference divider: R = 5 to 16,383
• Serial input 18-bit programmable divider consisting of:
- Binary 7-bit swallow counter: 0 to 127
- Binary 11-bit programmable counter: 5 to 2,047
• On–chip high performance charge pump circuit and phase comparator, achieving high–speed lock–up and low
phase noise.
• Wide operating temperature: Ta = –40 to 85°C
• Plastic 16-pin SSOP package (FPT-16P-M05) and 16-pin BCC package (LCC-16P-M02)
s PACKAGES
16-pin, Plastic SSOP
16-pin, Plastic BCC
(FPT-16P-M05)
(LCC-16P-M02)
1
1 page  
MB15E05L
s ABSOLUTE MAXIMUM RATINGS (See WARNING)
Parameter
Power supply voltage
Input voltage
Output voltage
Output current
Open drain voltage
Storage temperature
Symbol
VCC
VP
VI
VO
IO
Ido
VooP
Tstg
Rating
Min.
Max.
–0.5 +4.0
VCC +6.0
–0.5
VCC +0.5
–0.5
VCC +0.5
–10 +10
–25 +25
–0.5 7.0
–55 +125
Unit
V
V
V
V
mA
mA
V
°C
Remark
Except Do output
Do output
WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,
temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.
s RECOMMENDED OPERATING CONDITIONS
Parameter
Power supply voltage
Input voltage
Operating temperature
Symbol
VCC
VP
VI
Ta
Min.
2.7
VCC
GND
–40
Value
Typ.
3.0
–
–
–
Max.
3.6
6.0
VCC
+85
Unit
V
V
V
°C
Remark
WARNING: Recommended operating conditions are normal operating ranges for the semiconductor device. All
the device’s electrical characteristics are warranted when operated within these ranges.
Always use semiconductor devices within the recommended operating conditions. Operation outside
these ranges may adversely affect reliability and could result in device failure.
No warranty is made with respect to uses, operating conditions, or combinations not represented on
the data sheet. Users considering application outside the listed conditions are advised to contact their
FUJITSU representative beforehand.
HandIing Precautions
• This device should be transported and stores in anti-static containers.
• This is a static-sensitive device; take proper anti-ESD precautions. Ensure that personnel and equipment are
properly grounded. Cover workbenches with grounded conductive mats.
• Always turn the power supply off before inserting or removing the device from its socket.
• Protect leads with a conductive sheet when handling or transporting PC boards with devices.
5
5 Page 
MB15E05L
3. Power Saving Mode (Intermittent Mode Control Circuit)
Setting a PS pin to Low, the IC enters into power saving mode resultatly current consumption can be limited to
10 µA (max.). Setting PS pin to High, power saving mode is released so that the IC works normally.
In addition, the intermittent operation control circuit is included which helps smooth start up from the power saving
mode. In general, the power consumption can be saved by the intermittent operation that powering down or waking
up the synthesizer. Such case, if the PLL is powered up uncontrolled, the resulting phase comparator output signal
is unpredictable due to an undefined phase relation between reference frequency (fr) and comparison frequency
(fp) and may in the worst case take longer time for lock up of the loop.
To prevent this, the intermittent operation control circuit enforces a limited error signal output of the phase detector
during power up, thus keeping the loop locked.
During the power saving mode, the corresponding section except for indispensable circuit for the power saving
function stops working, then current consumption is reduced to 10 µA (max.).
At that time, the Do and LD become the same state as when a loop is locking. That is, the Do becomes high
impedance.
A VCO control voltage is naturally kept at the locking voltage which defined by a LPF”s time constant. As a result
of this, VCO’s frequency is kept at the locking frequency.
Note: • While the power saving mode is executed, ZC pin should be set at “H” or open. If ZC is set at “L”
during power saving mode, approximately 10 µA current flows.
• PS pin must be set “L” at Power-ON.
• The power saving mode can be released (PS : L → H) 1µs later after power supply remains stable.
• During the power saving mode, it is possible to input the serial data.
VCC
Clock
Data
LE
PS
(1)
ON
(2)
(1) PS = L (power saving mode) at Power-ON
(2)Set serial data after power supply remains stable.
(3)Relase power saving mode (PS : L → H) after setting serial data.
(3)
11
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet MB15E05L.PDF ] | |
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