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PDF ( 数据手册 , 数据表 ) AK1572

零件编号 AK1572
描述 Down Converter Mixer
制造商 AKM
LOGO AKM LOGO 


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AK1572 数据手册, 描述, 功能
[AK1572]
Down Converter Mixer with
AK1572
Fractional-N Frequency Synthesizer and VCO
1. Overview
AK1572 is the down-converter mixer with fractional-N frequency synthesizer and integrated VCO.
AK1572 is targeted at the application that requires a high linearity performance in frequency
conversion. The mixer block is comprised of the single input and the differential output. Input
frequency range is from 690MHz to 4000MHz and output frequency range is from 20MHz to 500MHz.
The current consumption and the analog performance can be adjusted by a resistance connected to
BIAS pin. The power supply voltage of mixer covers 4.75 to 5.25V.
The local signal output frequency range is from 262.5MHz to 4400MHz generated by internal VCO,
synthesizer and divider. Not only a local signal is supplied to an internal mixer, but also can be taken
to outside. A power supply voltage range of VCO/synthesizer is 2.7V to 3.6V or 4.75V to 5.25V.
The CPU interface is 24bit serial data and its voltage is ranging from 2.7V to 5.25V
General
RF input frequency Range
IF output frequency Range
LO frequency Range
Supply Voltage :
Current Consumption:
Package:
Operating Temperature :
2. Features
690MHz to 4.0GHz
20MHz to 500MHz
262.5MHz to 4.4GHz
4.75V to 5.25 V (Mixer)
2.7 to 3.6V / 4.75 to 5.25V (Synthesizer /VCO)
150mA typ.
32pin QFN (0.5mm pitch, 5mm 5mm 0.85mm)
-40°C ~ 85°C
Synthesizer/VCO
Normalized Phase Noise
Phase Noise
-218dBc/Hz
-111dBc/Hz @100kHz fo=2.1GHz
Mixer (frf=2GHz)
Conversion Gain
Input 3rd orders intercept point
Noise Figure
-1.5dB typ.
+23dBm typ.
14dB typ.
Application
Microwave Radio Link
Cellular BTS / Repeater
MS1551-E-00
1
2013//8
http://www.Datasheet4U.com







AK1572 pdf, 数据表
[AK1572]
2. Serial Interface Timing
<Write-In Timing>
LE
(Input)
Tcsu
CLK
(Input)
Tsu Thd
Tch Tcl
DATA
(Input)
D19 D18
6
D0 A3 A2 A1
Fig.3 Serial Interface Timing
Tlesu Tle
A0
Parameter
Clock L level hold time
Clock H level hold time
Clock setup time
Data setup time
Data hold time
LE setup time
LE pulse width
Serial Interface Timing
Symbol Min. Typ.
Tcl 25
Tch 25
Tcsu 10
Tsu 10
Thd 10
Tlesu
10
Tle 25
Max. Unit
ns
ns
ns
ns
ns
ns
ns
Remarks
MS1551-E-00
8
2013//8







AK1572 equivalent, schematic
[AK1572]
< Address0x02:Freq2 >
D [18: 16]
CP1[2:0] Set the charge pump current for normal status
D [14:12]
CP2[2:0] Set the charge pump current for fast lock
CP1 is the charge pump current setting of the normal mode.
CP2 is the charge pump current setting of the fast lock mode
Charge pump current is determined by the following formula.
Charge pump current [A] = Icp_min [A] × (CP1 or CP2 setting value+1)
Icp_min [A] = 8.1 / R [ohm]
R: the resistance value which is connected to [CPBIAS] pin
Charge pump current (typ) unit : μA
CP1[2:0]
CP2[2:0]
33kΩ
R
27kΩ
22kΩ
0 245 300 368
1 491 600 736
2 736 900 1105
3
982
1200
1473
4
1227
1500
1841
5
1473
1800
2209
6
1718
2100
2577
7
1964
2400
2945
D [11:0]
FRAC[11:0]Fractional Numerator determination
Set the Numerator of Fractional divider.
The allowed range is from 0 to (MOD[11:0] -1).
MS1551-E-00
16
2013/8










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