AK1545 Datasheet, PDF (4/39 Pages) Asahi Kasei Microsystems – 3.5GHz Low Noise Integer-N Frequency Synthesizer

[AK1545]
4. Pin Functional Description and Assignments
Table 1 Pin Functions
No. Name I/O
Pin Functions
1
SW DO Fast lock switch output
2
CP
AO Charge pump output
3
VSS
G Ground
4
TEST1
DI
TEST input 1. This pin must be connected to
ground.
5 RFINN AI Complementary input to the RF Prescaler
6 RFINP AI Input to the RF Prescaler
7 AVDD P Power supply for analog blocks
8 REFIN AI Reference signal input
9
TEST2
DI
TEST input 2. This pin must be connected to
ground.
10 PDN DI Power down
11 CLK DI Serial clock input
12 DATA DI Serial data input
13
LE
DI Load enable input
14
LD
DO Lock detect output
15 DVDD P Power supply for digital blocks
16 CPVDD P Power supply for charge pump
Note 1) “Power Down” means the state of [PDN] =”Low” after power on.
Power Down
(Note 1)
Remarks
“Hi-Z”
Schmidt trigger input
Schmidt trigger input
Schmidt trigger input
Schmidt trigger input
Schmidt trigger input
Schmidt trigger input
The following table shows the meaning of abbreviations used in the “I/O” column.
AI: Analog input pin
AO: Analog output pin AIO: Analog I/O pin DI: Digital input pin
DO: Digital output pin P: Power supply pin
G: Ground pin
MS1471-E-00
4
2012/10