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PDF AK1573C Data sheet ( Hoja de datos )
| Número de pieza | AK1573C | |
| Descripción | Frequency Synthesizer | |
| Fabricantes | AKM | |
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[AK1573/AK1573B/AK1573C]
AK1573/AK1573B/AK1573C
Frequency Synthesizer with Integrated VCO
1. General Description
AK1573 is the Integer-N frequency synthesizer with integrated VCO (Voltage Controlled Oscillator). It is
composed of programmable charge pump, reference divider, programmable divider, dual modulus
prescaler (P / P + 1). With the feature of high-performance, low noise and small size, it can be used as a
local signal source of a variety of frequency conversion.
By combining with an external loop filter, AK1573 form a complete Phase Locked Loop.
Access to the register is controlled by the serial interface of the 3-wire and Power supply voltage is 2.7V
to 3.3V.
2. Features
Normalized Phase Noise
-223dBc/Hz
Low Noise Integrated VCO
-86dBc/Hz@10kHz
-112dBc/Hz@100kHz
Operating Supply Voltage
2.7 to 3.3V
Low Current Comsumption@0dBm Output
AK1573
43mA
AK1573B
44mA
AK1573C
46mA
Programmable to Divide by
Programmable Output Power
Fast Lock-up Function
Analog or Digital Lock Detect Function
Output Mute Function
Package
Operating Temperature Range
1, 2, 4, 8, 16, 32, 64
-12dBm to +6dBm
24pin QFN (0.5mm pitch 4x4mm)
-40 ºC to 85 ºC
Frequency Coverage Options
VCO Frequency [MHz]
Divide by 1
Divide by 2
Divide by 4
Divide by 8
Divide by 16
Divide by 32
Divide by 64
AK1573
1480 to 2240
1480 to 2240
740 to 1120
370 to 560
185 to 280
92.5 to 140
46.25 to 70
30 to 35
AK1573B
1728 to 2600
1728 to 2600
864 to 1300
432 to 650
216 to 325
108 to 162.5
54 to 81.25
30 to 40.625
AK1573C
2100 to 3000
2100 to 3000
1050 to 1500
525 to 750
262.5 to 375
131.25 to 187.5
65.625 to 93.75
32.8125 to 46.875
015009351-E-00
-1-
2015/8
1 page  
[AK1573/AK1573B/AK1573C]
7. Pin Configurations and Functions
No. Pin Name I/O
Pin function
1
BIAS
AI Charge pump current setting pin
Power
Down
Description
Connect a 27kΩ resistor
to the ground
2 VREF2 AO Internal reference voltage output pin
3 VCNT AI VCO control voltage input pin
4 SCAP AO VCO Bias stabilizing connection pin
5 VCOVSS G Ground of VCO block
6 VCOVDD P Power supply of VCO block
7
TEST1
DI
TEST1 pin
Connect to the ground
“L”
Connect a 470nF
capacitor to the ground
“L”
Connect a 100pF
capacitor to the ground
Pull Down
Schmitt trigger input
8
TEST2
DI
TEST2 pin
Connect to the ground
Pull Down
Schmitt trigger input
Power down 1 pin. When PDN1 =
9
PDN1
DI “L", device is powered down and the
registers are not retained.
Schmitt trigger input
10 OAVSS G Ground of Local buffer
11 RFOUT_P AO Local signal output pin
12
RFOUT_N
AO
Local signal complementary output
pin
13 PVDD
P Power supply of Prescaler and LDO
14 PVSS G Ground of Prescaler and LDO
15 VREF1 AO Output pin of LDO
16 REFIN DI Reference signal input pin
Open collector
Connect a inductor and a
register to VDD
“L”
Connect a 220nF
capacitor to the ground
Power down 2 pin. When PDN2
17
PDN2
DI
= ”L”, all blocks except LDO and
VBG are powered down but the
registers are retained
Schmitt trigger input
18 CLK DI Serial clock input pin.
19 DATA DI Serial data input pin.
20 LE DI Load enable input pin.
21 LD DO Lock detect output pin
22 CVPSS G Ground of Charge Pump
23 CP AO CP signal output pin
24 CPVDD P Power supply of Charge Pump
Schmitt trigger input
Schmitt trigger input
“L”
Tri-State
AI: Analog input pin
DI: Digital input pin
AO: Analog output pin
DO: Digital output pin
AIO: Analog I/O pin
P: Power supply pin
G: Ground pin
* “Power Down” means the state in which power supply is applied and PDN1 / PDN2 pins = "L".
* The exposed pad at the center of the backside should be connected to the ground
015009351-E-00
-5-
2015/8
5 Page 
[AK1573/AK1573B/AK1573C]
11. Typical Characteristics
VDD=3.0V, Ta=25C, BIAS resistance =27kΩ.
1. Analog Characteristics
AK1573
Figure.6 Output power vs. Output frequency
(a) VCOI bit = “0”, DIV[2:0] bits = “000”
(b) VCOI bit = “1”, DIV[2:0] bits = “000”
(c) Output frequency=1600MHz, VCOI bit=“1”
(d) Output frequency=2000MHz, VCOI bit=“1”
Figure.7 Current vs. OUTLV[2:0] bits
015009351-E-00
- 11 -
2015/8
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AK1573C.PDF ] | |
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