AK1545 datasheet(9/39 Pages) AKM

Part #	AK1545

Description	3.5GHz Low Noise Integer-N Frequency Synthesizer

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Manufacturer	AKM [Asahi Kasei Microsystems]

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[AK1545]

3. Analog Circuit Characteristics

VDD1＝2.7V to 5.5V, VDD2=VDD1 to 5.6V, –40°C ≤ Ta ≤ 85°C, unless otherwise specified.

Parameter

Min.

Typ.

Max.

Unit

Remarks

RF Characteristics

Input Sensitivity

-10

2

dBm

Input Frequency

500

3500

MHz

REFIN Characteristics

Input Sensitivity

0.4

VDD1

Vpp

Input Frequency

5

100

MHz

Maximum Allowable Prescaler Output

Frequency

120

MHz

Phase Detector

Phase Detector Frequency

55

MHz

Charge Pump

Charge Pump High Value

1

mA

Charge Pump Low Value

250

μA

Icp TRI-STATE Leak Current

1

nA

0.6≤Vcpo≤VDD2-0.7, Ta=25°C

Mismatch between Source and Sink Currents

(Note 1)

3

%

Vcpo=VDD2/2, Ta=25°C

Icp vs. Vcpo (Note 2)

2

%

0.5≤Vcpo≤VDD2-0.5, Ta=25°C

Noise Characteristic

Normalized Phase Noise Floor

-217

dBc/Hz

Current Consumption

IDD1

10

μA

[PDN]=“0” or {PD1}=1

IDD2 (Note3, Note4)

12

18

mA

[PDN]=”1”, {PD1}=0, IDD for VDD1

IDD3 (Note4)

0.4

0.7

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 AK1545 is “IDD2+IDD3+ Charge

pump current”.

Note 4) RFIN=3.5GHz,5dBm, REFIN=100MHz,10dBm, {R}=100,{B}=109,{A}=12

MS1471-E-00

9

2012/10

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