sp5070 Mitel, sp5070 Datasheet

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sp5070

Manufacturer Part Number
sp5070
Description
2.ghz Fixed Modulus Frequency Synthesiser
Manufacturer
Mitel
Datasheet

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for use in Satellite TV receivers and together with an
appropriate voltage controlled oscillator (VCO), forms a
complete phase locked loop (PLL) synthesiser. The circuit
consists of a prescaler with preamplifier and a fixed modulus
divider. The phase comparator is fed with a reference
frequency derived from an external oscillator or crystal. The
comparator has a charge pump output amplifier stage
around which feedback may be applied. Only an external
transistor is required for varicap line driving.
FEATURES
APPLICATIONS
ORDERING INFORMATION
* Normal ESD handling procedures should be observed.
Low Power Consumption (5V, 47mA typ.)
Prescaler and Preamplifier Included
Charge Pump Amplifier with Feedback Point
Charge Pump Disable Facility
Synthesises Frequencies up to 2.4GHz
Pin and Function Compatible with SP5060 and
SP5062
Full ESD Protection*
Satellite TV
High IF Cable Tuning Systems
C-Band with Frequency Doubling Mixer
The SP5070 is a single modulus frequency synthesiser
SP5070 DP
SP5070F MP
RF IN
RF IN
2
3
PRE
AMP
OSCILLATOR
CAPACITOR
- (14 Lead Plastic Package)
- (14 Lead Miniature Plastic Package)
9 10
PRESCALER
CRYSTAL
REF IN/
32
REFERENCE
DIVIDER
Fig.2 Block diagram of SP5070
MODULUS
1024
DIVIDER
2.GHz Fixed Modulus Frequency Synthesiser
FIXED
8192
FCOMP
FDIV
PHASE
TEST 1 TEST 2
COMP
14
OUTPUT
BUFFER
DRIVE OUTPUT
13
DRIVE OUTPUT
RF INPUT
RF INPUT
RF INPUT
RF INPUT
Fig.1 Pin connections - top view
V
V
NC
NC
CC
EE
V
V
NC
NC
CHARGE
CC
EE
11
PUMP
CPDIS
3
4
5
6
7
1
2
3
4
5
6
7
1
2
SP5070F
SP5070
10
10
14
12
11
14
12
11
13
13
9
8
9
8
OSCILLATOR CAPACITOR
TEST 2
CHARGE PUMP
TEST 1
NC
REF IN/CRYSTAL
CPDIS
OSCILLATOR CAPACITOR
TEST 2
TEST 1
NC
REF IN/CRYSTAL
CHARGE PUMP
CPDIS
DS3966-2.2 May 996
8
7
6
1
SP5070
PUMP
V CC
DRIVE
V EE
MP14
DP14

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sp5070 Summary of contents

Page 1

... The SP5070 is a single modulus frequency synthesiser for use in Satellite TV receivers and together with an appropriate voltage controlled oscillator (VCO), forms a complete phase locked loop (PLL) synthesiser. The circuit consists of a prescaler with preamplifier and a fixed modulus divider. The phase comparator is fed with a reference frequency derived from an external oscillator or crystal. The comparator has a charge pump output amplifi ...

Page 2

... SP5070 ELECTRICAL CHARACTERISTICS Tamb = -40°C to +85°C,VCC = +4.5V to +5.5V. These characteristics are guaranteed by either production test or design. They apply within the specified ambient temperature and supply voltage ranges unless otherwise stated. Characteristics Symbol Supply current Prescaler input voltage Prescaler input voltage ...

Page 3

... FUNCTIONAL DESCRIPTION The SP5070, when used with a voltage controlled oscillator, forms a complete phase locked loop frequency synthesiser. The phase comparator comparison frequency is obtained by dividing the reference frequency. This may be generated on-chip by means of an external crystal, or from an external reference oscillator. The output of the prescaler is divided by the fixed modulus divider, producing an output frequency which is phased locked to the comparison frequency ...

Page 4

... SP5070 Fig.5 Typical input sensitivity RF input Reference oscillator Fig.7 SP5070 input/output interface circuits = 50 FREQUENCY MARKER 0 STEP = 500MHz Fig.6 Typical input impedance Loop amplifier TEST 1and TEST 2 outputs ...

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Page 7

... Mitel. This publication is issued to provide information only and (unless agreed by Mitel in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. The products, their specifications, services and other information appearing in this publication are subject to change by Mitel without notice. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specifi ...

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