SP5024SMP View Datasheet(PDF) - Zarlink Semiconductor Inc
Part Name
Description
Manufacturer
SP5024SMP Datasheet PDF : 8 Pages
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SP5024
3-Wire Bus Controlled Synthesiser
DS2452 - 2.1 December 1992
The SP5024 is a programming variant of the SP5510
allowing the design of one tuner with either I2C bus or 3-wire
bus format depending on which device is inserted. The
SP5024, when used with a TV varicap tuner, forms a complete
phase locked loop tuning system. The circuit consists of a
divide-by-8 prescaler with its own preamplifier and a 15 bit
programmable divider controlled by a serially - loaded data
register. Four open-collector outputs, each independently
programmable, are included. The device has two modes of
operation selected by the 'mode selected input'. In mode 1 the
comparison frequency is 7.8125kHz and the programmable
divider MSB is bypassed; mode 2 comparison frequency is
6.25kHz. The comparison frequencies are both obtained from
a 4MHz crystal controlled on-chip oscillator. The comparator
has a charge pump output with an output amplifier stage
around which feedback may be applied. Only one external
transistor is required for varicap line driving.
FEATURES
s Complete 1.3GHz Single Chip System
s Dual Standard 50kHz or 62.5kHz Step Size
s Low Power Consumption (5V 40mA)
s Programming Compatible with Toshiba TD6380 and
TD6381 *
s Pin Compatible with SP5510 *
s Low Radiation
s Varactor Drive Amplifier Disable
s Charge Pump Disable
s Single Port 18/19 Bit Serial Data Entry
s Four Controllable Outputs
s ESD Protection †
* See notes on pin compatibility
† Normal ESD handling procedures should be observed
APPLICATIONS
s Satellite TV When Combined With SP4902 2.5GHz
Prescaler
s Cable Tuning Systems
s VCRs
CHARGE PUMP 1
CRYSTAL 2
MODE SELECT 3
DATA 4
CLOCK 5
PORT P4 6
PORT P3 7
PORT P2 8
PORT P1 9
18 DRIVE OUTPUT
17 VEE
16 RF INPUT
15 RF INPUT
14 VCC
13 NC
12 NC
11 LOCK
10 ENABLE
DP18
CHARGE PUMP
1
16
DRIVE OUTPUT
CRYSTAL
VEE
MODE SELECT
RF INPUT
DATA
RF INPUT
CLOCK
VCC
PORT P4
LOCK
PORT P3
ENABLE
PORT P2
8
9
PORT P1
MP16
Fig. 1 Pin connections – top view
ORDERING INFORMATION
SP5024 DP - (18-lead plastic package)
SP5024S MP - (16-lead miniature plastic package)
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