AK1547 Datasheet, PDF (9/37 Pages) Asahi Kasei Microsystems – 4GHz Low Noise Integer-N Frequency Synthesizer

[AK1547]
3. Analog Circuit Characteristics
The resistance of 27kΩ is connected to the [BIAS] pin.
VDD1＝2.7V to 5.5V, VDD2=VDD1 to 5.5V, –40°C≤Ta≤85°C, unless otherwise specified.
Parameter
Min. Typ. Max. Unit
Remarks
Input Sensitivity
Input Frequency
RF Characteristics
-10
0
500
4000
dBm
MHz
REFIN Characteristics
Input Sensitivity
0.4
VDD1 Vpp
Input Frequency
Maximum Allowable Prescaler Output
Frequency
5
104
125
Phase Detector
MHz
MHz
Phase Detector Frequency
55 MHz
Charge Pump
Charge Pump Maximum Value
Charge Pump Minimum Value
Icp TRI-STATE Leak Current
Mismatch between Source and Sink Currents
(Note 1)
Icp vs. Vcpo (Note 2)
5200
650
1
10
15
μA
μA
nA 0.6≤Vcpo≤VDD2-0.7, Ta=25°C
% Vcpo=VDD2/2, Ta=25°C
% 0.5≤Vcpo≤VDD2-0.5, Ta=25°C
Current Consumption
IDD1
IDD2 (Note3, Note4)
10
μA [PDN]=“0” or {PD1}=1
12
18
mA [PDN]=”1”, {PD1}=0, IDD for VDD1
IDD3 (Note3)
0.8
1.6
mA [PDN]=”1”, {PD1}=0, IDD for VDD2
Note 1) Mismatch between Source and Sink Currents : [(|Isink|-|Isource|)/{(|Isink|+|Isource|)/2}]×100 [%]
Note 2) See “Charge Pump Characteristics - Voltage vs. Current”. Vcpo is the output voltage at [CP].
Icp vs. Vcpo : [{1/2×(|I1|-|I2|)}/{1/2×(|I1|+|I2|)}]×100 [%]
Note 3) When [PDN] = ”1” and {PD1}=0, the total power supply current of the AK1547 is “IDD2+IDD3+ Charge
pump current”.
Note 4) RFIN=4GHz,5dBm input, REFIN=100MHz, 10dBm input, PRESCALER=32,
Phase Detector Frequency=1MHz
MS1464-E-00
9
2012/9