74HCT9046A Datasheet, PDF (22/43 Pages) NXP Semiconductors – PLL with bandgap controlled VCO

NXP Semiconductors
74HCT9046A
PLL with band gap controlled VCO
SIG_IN
V_M
input
COMP_IN
input
V_M
t_PZH
t_PHZ
t_PZL
PC2_OUT
output
90%
V_M
V_M = 0.5V_CC; V_I = GND to V_CC.
Fig 19. Waveforms showing the enable and disable times for PC2_OUT
t_PLZ
10%
mga941
20
∆f
(%)
10
mbd115
15
∆f
(%)
10
5
mbd116
0
0
−10
−20
−50
0
V_CC =
5.5 V
4.5 V
50
100
150
T_amb (°C)
−5
−10
−15
−50
0
V_CC =
5.5 V
4.5 V
50
100
150
T_amb (°C)
a. R1 = 3 kΩ; R2 = ∞ Ω; C1 = 100 pF.
b. R1 = 10 kΩ; R2 = ∞ Ω; C1 = 100 pF.
Fig 20. Frequency stability of the VCO as a function of ambient temperature with supply voltage as a parameter
74HCT9046A_6
Product data sheet
Rev. 06 — 15 September 2009
© NXP B.V. 2009. All rights reserved.
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