WF5027 series
TYPICAL PERFORMANCE (for 3rd overtone oscillator)
The following characteristics measured using the crystal below. Note that the characteristics will vary with the
crystal used.
ꢀ Crystal used for measurement
ꢀ Crystal parameters
Parameter
C0 [pF]
f
= 85MHz
0.9
f
= 100MHz
O
C1
C0
L1
R1
O
1.2
45
R1 [Ω]
56
Current Consumption
12
10
8
12
10
8
CL = 15pF
CL = 0pF
CL = 15pF
6
6
4
2
4
CL = 0pF
2
0
0
1.6
2.2
2.8
VDD [V]
3.4
4
1.6
2.2
2.8
3.4
4
VDD [V]
5027×D, f
= 85MHz, Ta = 25°C
5027AP, f
= 100MHz, Ta = 25°C
OUT
OUT
Negative Resistance
Frequency [MHz]
80 120
1.8V
2.5V
3.3V
0
40
160
200
0
1.8V
2.5V
3.3V
C0 = 2pF
1.8V
2.5V
3.3V
–200
C0 = 1pF
–400
–600
C0 = 0pF
–800
1.8V
2.5V
3.3V
–1000
5027×D, Ta = 25°C, recommended operating frequency
range: 85MHz to 110MHz
Characteristics are measured with a capacitance C0, representing the crystal equivalent circuit C0 capacitance, connected between the
XT and XTN pins. Measurements are performed with Agilent 4396B using the NPC test jig. Characteristics may vary with measurement jig
and measurement conditions.
SEIKO NPC CORPORATION —18
NPC [ NIPPON PRECISION CIRCUITS INC ]
