74hct9046a NXP Semiconductors, 74hct9046a Datasheet - Page 2

• Manufacturer Part Number: 74hct9046a
• Description: Pll With Bandgap Controlled Vco
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
GND = 0 V; T
Notes
1. C
2. Applies to the phase comparator section only (pin INH = HIGH). For power dissipation of the VCO and demodulator
2003 Oct 30
f
C
C
c
SYMBOL
Operation power supply voltage range from 4.5 to 5.5 V
Low power consumption
Inhibit control for ON/OFF keying and for low standby
power consumption
Centre frequency up to 17 MHz (typical) at V
Choice of two phase comparators:
– PC1: EXCLUSIVE-OR
– PC2: Edge-triggered JK flip-flop.
No dead zone of PC2
Charge pump output on PC2, whose current is set by an
external resistor R
Centre frequency tolerance 10%
Excellent Voltage Controlled Oscillator (VCO) linearity
Low frequency drift with supply voltage and temperature
variations
On-chip band gap reference
Glitch free operation of VCO, even at very low
frequencies
Zero voltage offset due to op-amp buffering
ESD protection:
– HBM EIA/JESD22-A114-A exceeds 2000 V
– MM EIA/JESD22-A115-A exceeds 200 V.
I
PD
PLL with band gap controlled VCO
P
f
f
C
V
N = total load switching outputs;
sections, see Figs 26 to 28.
i
o
(C
D
CC
PD
= input frequency in MHz;
L
= output frequency in MHz;
= output load capacitance in pF;
= C
L
is used to determine the dynamic power dissipation (P
= supply voltage in Volts;
PD
V
CC
amb
VCO centre frequency
input capacitance
power dissipation capacitance per package
2
V
CC
= 25 C; t
f
o
2
) = sum of the outputs.
b
f
i
N + (C
r
= t
PARAMETER
f
6 ns.
L
V
CC
2
f
o
CC
) where:
= 5.5 V
2
C1 = 40 pF; R1 = 3 k ; V
notes 1 and 2
APPLICATIONS
GENERAL DESCRIPTION
The 74HCT9046A is a high-speed Si-gate CMOS device.
It is specified in compliance with JEDEC standard no 7A.
D
FM modulation and demodulation where a small centre
frequency tolerance is essential
Frequency synthesis and multiplication where a low jitter
is required (e.g. video picture-in-picture)
Frequency discrimination
Tone decoding
Data synchronization and conditioning
Voltage-to-frequency conversion
Motor-speed control.
in W).
CONDITIONS
CC
= 5 V 16
74HCT9046A
Product specification
3.5
20
TYPICAL
MHz
pF
pF
UNIT