MB15E05SLPV1-G-ER Fujitsu Components, MB15E05SLPV1-G-ER Datasheet - Page 11

• Manufacturer Part Number: MB15E05SLPV1-G-ER
• Manufacturer: Fujitsu Components
• Type: PLL Frequency Synthesizerr

Specifications of MB15E05SLPV1-G-ER

• Number Of Elements: 1
• Supply Current: 3.5mA
• Pll Input Freq (min): 100MHz
• Pll Input Freq (max): 2GHz
• Operating Supply Voltage (typ): 3V
• Operating Temp Range: -40C to 85C
• Package Type: BCC
• Operating Supply Voltage (min): 2.4V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Industrial
• Pin Count: 16
• Lead Free Status / Rohs Status: Not Compliant

When designing a synthesizer, the FC pin setting depends on the VCO and LPF characteristics.
3. Do Output Control
Table 9. ZC Pin Setting
4. Power Saving Mode (Intermittent Mode Control Circuit)
Table 10. PS Pin Setting
The intermittent mode control circuit reduces the PLL power consumption.
By setting the PS pin low, the device enters into the power saving mode, reducing the current consumption. See
the Electrical Characteristics chart for the specific value.
The phase detector output, Do, becomes high impedance.
For the signal PLL, the lock detector, LD, remains high, indicating a locked condition.
Setting the PS pin high, releases the power saving mode, and the device works normally.
The intermittent mode control circuit also ensures a smooth startup when the device returns to normal operation.
When the PLL is returned to normal operation, the phase comparator output signal is unpredictable. This is because
of the unknown relationship between the comparison frequency (fp) and the reference frequency (fr) which can
cause a major change in the comparator output, resulting in a VCO frequency jump and an increase in lockup time.
To prevent a major VCO frequency jump, the intermittent mode control circuit limits the magnitude of the error
signal from the phase detector when it returns to normal operation.
Note: When power (V
• When the LPF and VCO characteristics are similar to
• When the VCO characteristics are similar to (2), set
ZC pin
PS pin
(1), set FC bit high.
FC bit low.
H
H
L
L
PLL
Normal output
High impedance
Normal mode
Power saving mode
LPF
CC
) is first applied, the device must be in standby mode, PS = Low, for at least 1 µs.
VCO
Do output
Status
Frequency
Output
VCO
LPF Output Voltage
MB15E05SL
(1)
(2)
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