S1M8831A Samsung Semiconductor, Inc., S1M8831A Datasheet - Page 29

• Manufacturer Part Number: S1M8831A
• Description: Fractional-n Rf/integer-n If Dual Pll Frequency Synthesizer
• Manufacturer: Samsung Semiconductor, Inc.

FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
SIMPLIFIED SCHEMATIC DIAGRAM FOR RF SENSITIVITY TEST
NOTES:
1.
2.
Generator
Sensitivity limit is determined when the error of the divided RF output (fOLD) becomes 10Hz.
f
f
Signal
VCO
VCO
RF
= 1.0GHz, N = 1000, P = 8, R = 2 in S1M8831 Integer-N test mode
= 1.6GHz, N = 1600, P = 16, R = 2 in 1M8833 Integer-N test mode
Frequency
Counter
10dB ATTN
Microstrip 100pF
50
51
12k
39k
100pF
OSC
foLD
f
f
in
in
in
S1M8831A
/33
V
V
LE
DATA
CLOCK
2.7V to 4.0V
DD
P
100pF
2.2 F
100pF
PC Parallel
Port
S1M8831A/33
2.2 F
29