74HCT9046A Datasheet, PDF (14/43 Pages) NXP Semiconductors – PLL with bandgap controlled VCO

NXP Semiconductors
74HCT9046A
PLL with band gap controlled VCO
A
I_cp
17
Rbias
I_cp
F_(jω)
R4
INPUT
C2
OUTPUT
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m
1 / _Aτ1
1 /A_τ2
ω
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a. Simple loop filter for PC2 with
damping
b. Amplitude characteristic
τ₁ = -^R---₁^b---₇ⁱ--^a--^s × C2 = R3‘ × C2
τ₂ = R4 × C2
F_(jω) = -₁---¹-_⁄---_A-⁺----₊--^j--^ω--_j--_ωτ---²-_τ---₁-
Fig 13. Simple loop filter for PC2 with damping
O
−1/_τ2
1 /A_τ1
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c. Pole zero diagram
A = DC gain limit, due to leakage
9. Limiting values
Table 3. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min Max Unit
V_CC
supply voltage
I_IK
input clamping current
V_I < −0.5 V or V_I > V_CC + 0.5 V
I_OK
output clamping current
V_O < −0.5 V or V_O > V_CC + 0.5 V
I_O
output current
−0.5 V < V_O < V_CC + 0.5 V
−0.5 +7
V
-
±20
mA
-
±20
mA
-
±25
mA
I_CC
I_GND
T_stg
P_tot
supply current
ground current
storage temperature
total power dissipation
DIP16
T_amb = −40 °C to +125 °C
-
+50 mA
−50 -
mA
−65 +150 °C
[1] _-
750 mW
SO16 and TSSOP16
[2] _-
500 mW
[1] For DIP16 packages: above 70 °C the value of P_tot derates linearly with 12 mW/K.
[2] For SO16 and TSSOP16 packages: above 70 °C the value of P_tot derates linearly with 8 mW/K.
74HCT9046A_6
Product data sheet
Rev. 06 — 15 September 2009
© NXP B.V. 2009. All rights reserved.
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