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SL2030
High Performance Broadband Mixer Oscillator
Preliminary Information
DS5116 Issue 2.1 October 1999
Ordering Information
SL2030/IG/MP1S (Tubes)
SL2030/IG/MP1T (Tape and Reel)
Features
G
Single Chip Broadband Solution
G
Wide Dynamic Range RF Input
G
Low Phase Noise Balanced Internal Local Oscillator
G
Wide
Frequency Range: 50 to 860 MHz
G
ESD Protection 2kV min., MIL-STD-883B Method 3015
Cat.1 (Normal ESD handling procedures should be
observed)
Applications
G
Double Conversion Tuners
G
Digital Terrestrial Tuners
G
Data Transmit Systems
G
Data Communications Systems
The SL2030 is a bipolar, broadband wide dynamic range
mixer oscillator, optimised for applications as an
upconverter in double conversion tuner systems. It also
has application in any system where a wide dynamic range
broadband frequency converter is required.
The SL2030 is a single chip solution containing all
necessary active circuitry and simply requires an external
tuneable resonant network for the local oscillator. The block
diagram is shown in Figure 1 and pin connections are
shown in Figure 2.
In normal application the high IF output is interfaced through
appropriate impedance matching to the high IF filter. The
RF input preamplifier of the device is designed for low noise
figure within the operating region and for high
intermodulation distortion intercept so offering good signal
to noise plus composite distortion spurious performance.
The preamplifier also provides gain to the mixer section
and back isolation from the local oscillator section. The
approximate model of the RF input is shown in Figure 3.
Absolute Maximum Ratings
Supply voltage, V
CC
RF differential input voltage
All I/O port DC offset
Storage temperature
Junction temperature
Package thermal resistance
Chip to ambient,
JA
Chip to case,
JC
203V to 17V
25V
203 to V
CC
103V
255
C to 1150C
1150
C
20
C/W
80
C/W
The output of the preamplifier is fed to the mixer section
which is optimised for low radiation application. In this stage
the RF signal is mixed with the local oscillator frequency,
which is generated by an on-chip oscillator. The oscillator
block uses an external tuneable network and is optimised
for low phase noise. A typical application is shown in
Figure 6 and the typical phase noise performance in
Figure 5. This block also contains a buffer-amplifier to
interface with an external PLL to allow for frequency
synthesis of the local oscillator.
The IF output must be loaded differentially in order to get
best intermodulation performance. The approximate model
of the IF output is shown in Figure 4.
In application care should be taken to achieve symmetric
balance to the IF outputs to maximise intermodulation
performance.
Figure 1 SL2030 block diagram
RFIN
RFIN
LO2
LO1
IF1
IF2
PRSC1
2
SL2030
MP16
SL
2030
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IF2
NC
GND
GND
GND
GND
RFIN
RFIN
IF1
NC
V
CC
/VCO
LO2
LO1
V
CC
/VCO
PRSC1
V
CC
/LNA
Figure 2 Pin connections - top view
Electrical Characteristics
Tamb = 240
C to 185C, V
CC
= 5V 65%, V
EE
= 0V. These characteristics are guaranteed by either production test or
design. They apply within the specified ambient temperature and supply voltage ranges unless otherwise stated.
Characteristic
Conditions
Max.
Min.
Value
Typ.
Units
IF output pins 1 and 16 will be nominally
connected to V
CC
through the differential
balun load as in Figure 6
Operating condition only
See Figure 3
Differential voltage gain to 50
load on
output of impedance transformer as in
Figure 6.
50-860MHz
Channel bandwidth 8MHz within operating
frequency range
45-865MHz
Pin
99
860
225
11
11
05
220
10
9,11,14
7,8
7,8
7,8
7,8
50
25
8
21
65
97
10
8
mA
MHz
dB
V
dB
dB
dB
dB
Supply current
Input frequency range
Composite peak input signal
Input impedance
Input return loss
Conversion gain
Gain variation across
operating range
Gain variation within channel
Through gain
Noise figure
cont...
Quick Reference Data
All data applies with circuit component values given in Table 1
Characteristic
Value
Units
RF input operating frequency range
Input noise Figure, SSB, 50 to 860MHz
Conversion gain 50 to 860MHz
IIP3 input referred
CTB (fully loaded matrix)
P1dB input referred
IIP2
input referred
Composite 2nd order (fully loaded matrix)
LO phase noise at10 kHz offset, f
RF
50 to 860MHz, application as in Figure 6
LO leak to RF input
Fundamental
Second harmonic
50-860
8
8
121
,264
104
145
,262
,285,see Figure 5
72
92
MHz
dB
dB
dB
V
dBc
dB
V
dB
V
dBc
dBc/Hz
dB
V
dB
V
3
SL2030
Electrical Characteristics (continued)
139
117
10
294
1
95
25
Characteristic
Two tones at 92dB
V
Two tones at 92dB
V
128 channels at 62dB
V
Maximum tuning range 09GHz within
band, application as in Figure 6
Application as Figure 6. See Figure 5 for
a typical device
To device input
To device input
Into 50
load
See Figure 4
Conditions
Max.
Min.
Value
Units
dB
V
dB
V
dBc
GHz
dBc/Hz
GHz
dB
V
dB
V
dB
V
Typ.
153
126
21
285
13
72
92
75
145
121
262
287
IIP2
IIP3
Composite 2nd order
LO operating range
LO phase noise, SSB at 10kHz
offset
IF output frequency range
LO and harmonic leakage
to RF input
Fundamental
2nd harmonic
LO Prescaler output swing
LO Prescaler output impedance
IF output impedance
Pin
12,13
1,16
7,8
7,8
10
10
1,16
Application Notes
Figure 6 shows the SL2030 in a typical upconverter application.
The network connected to RF input pin 7 and pin 8 is to
improve the matching between the device input and the
source. The source would normally be from a cable, via
passive LPF and PlN-diode attenuator all designed for 75
characteristic impedance.
The network connected to the IF output pin 1 and pin 16 is
a broadband tuned balun centred typically on 11 GHz.
This matches the device output impedance of nominally
400
(balanced) to 50 (unbalanced).
Figure 3 Approximate model of RF input
Figure 4 Approximate model of IF output
Figure 5 Phase noise performance
The network connected to the LO pin 12 and pin 13 is a
varactor diode loaded resonant microstrip line resonator.
Fine adjustment of the tuning range can be achieved by
shortening the line (top end) or by physically moving C19
(see Figure 6) closer to the LO pins. This extends the
bottom end of the tuning range.
It is important to provide good decoupling on the 5V
supplies and to use a layout which provides some isolation
between the RF, IF and LO ports.
33p
6
6
820
PIN 7
PIN 8
2p
325
PIN 1
PIN 16
50 100
200
300
400
500
600
700
800 850
RF INPUT FREQUENCY (MHz)
288
289
290
291
292
PHASE NOISE (dBc/Hz MKRN)
4
SL2030
Figure 6 SL2030 upconverter application
SL
2030
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IF2
GND
GND
GND
GND
RFIN
RFIN
IF1
V
CC
/VCO
LO2
LO1
V
CC
/VCO
PRSC1
V
CC
/LNA
L10
L11
R5
C20
R4
C16
L2
L4
L5
C5
C6
B1 BALUN
R3
C4
IF OUT
S1 RESONATOR
C19
C10
C13
V
CC2
C17
C9
V
CC1
C18
C8
C3
R12
SKT2
C21
SKT1
RFIN
C2
C29
C1
L1
R1
R2
D2
D1
V
CC3
C15
C14
C24
R9
R10
C22
EXTERNAL
VARACTOR DRIVE
(REMOVE R9)
SKT4
L7
C35
V
CC1
L6
C33
V
CC2
L3
C32
V
CC3
5V DEVICE SUPPLY
2
1
1
2
3
GND
30V
5V
30V SYNTHESISER
GND
5V SYNTHESISER
J2
POWER
J1
POWER
C11
T1
BCW31
130V
15V
SP
5659
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CP
XTAL
REF/COMP
ADDRESS
SDA
SCL
P3
P2
DRIVE
V
EE
RF I/P
RF I/P
V
CC
ADC
P0
P1
C42
R7
C31
R8
L9
C4
X1 C30
C38
C47
15V
C43
C46
R11
SCL5
5V
SDA5
J3
3
4
5
6
I
2
C BUS
NOTE: Refer to Table 1 for component values
C41
5
SL2030
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
C37
C38
C39
C40
C41
C42
C43
C44
C45
C46
C47
D1
D2
L1
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
Component
1nF
1nF
1 nF
15pF
1pF
1pF
100pF
100pF
100pF
10
F
100nF
100nF
100pF
100pF
100nF
100nF
2pF
100pF
1nF
33nF
1nF
Value/type
Component
15pF
18pF
330nF
1nF
1nF
100nF
1nF
100pF
47
F
33nF
100nF
100nF
100pF
IT402
IT402
100nH
Value/type
L2
L3
L4
L5
L6
L7
L8
L9
L10
L11
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
S1
T1
X1
Component
18nH
220nH
18nH
220nH
220nH
220nH
68nH
68nH
220
20
1k
120
120
15k
22k
15k
1k
47k
50
Resonator (Figure 7)
BCW31
4MHz crystal
Value/type
05
10
15
15
3
3
3
05
05
Table 1 Component values for Figure 6
Figure 7 Microstrip resonator (dimensions are in mm)