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74HCT9046A Datasheet, PDF (30/43 Pages) NXP Semiconductors – PLL with bandgap controlled VCO
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NXP Semiconductors
74HCT9046A
PLL with band gap controlled VCO
PC1
CIRCUIT
R3
C2
R3
C3
R4
C2
C3
C2
R4
R3
A
F(jω)
AMPLITUDE
CHARACTERISTIC
F(jω)
1/ τ 1
(a)
1/ τ 2
1/ τ 3
1/ τ 1 τ 2
(b)
A
1/ τ 2
1/ τ 3
1/A τ 1
(c)
PC2
R3'
R4
AR3'
C2
A
1/ τ 2
1/ τ 3
1/A τ 1
(d)
A
C3
C2
1/ τ 2
1/ τ 3
R4
R3'
A
1/A τ 1
(e)
Fig 30. Passive and active filters for 74HCT9046A
POLE ZERO
DIAGRAM
X
1/ τ 1
O
X
1/ τ 2
1
τ1 τ2
O
1/τ 2
X 1/A τ 1
O
1/τ 2
X 1/ Aτ1
O
1/τ 2
X 1/ Aτ1
mbd107
74HCT9046A_6
Product data sheet
Rev. 06 — 15 September 2009
© NXP B.V. 2009. All rights reserved.
30 of 43
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