5076 Datasheet, PDF (10/13 Pages) Nippon Precision Circuits Inc – VCXO Module IC with Built-in Varicap

Current Consumption
5076 series
Measurement circuit
5
4
3
2 _{CLOUT = 15pF}
1
0
CLOUT = No load
1.6
1.7
1.8
1.9
VDD [V]
f_OUT = 27MHz, Ta = R.T.
VC = 0V
VC = 0.5VDD
VC = VDD
VC = 0V
VC = 0.5VDD
VC = VDD
2.0
Crystal
0.1µF
IDD A
VDD
XT
XTN
Q
VC
VSS
Frequency Stability by Supply Voltage Change Measurement circuit
3.0
2.0
1.0
0.0
−1.0
−2.0
−3.0
1.6
VC = 0V
VC = 1.8V
VC = 0.9V
1.7
1.8
1.9
2.0
VDD [V]
f_OUT = 27MHz, ± 0ppm at V_DD = 1.8V
Drive Level
Crystal
VDD
XT
XTN
VC
VSS
Q
0.1µF
CLOUT = 15pF
(Including probe
capacitance)
Measurement circuit
30
25
20
15
10
5
0
0.0 0.3
0.6
0.9
1.2
VC [V]
1.5 1.8
V_DD = 1.8V, f_OUT = 27MHz, Ta = R.T.
Crystal
Tektronix CT-6
Current Probe
IX'tal
VDD
XT
0.1µF
XTN
Q
VC
VSS
CLOUT = 15pF
DL = (I_X’tal)² × Re
DL: drive level
I_X’tal: current flowing to crystal (RMS value)
Re: crystal effective resistance
SEIKO NPC CORPORATION —10