Datasheet SL2030, SL2030IG, SL2030MP1S, SL2030MP1T Datasheet (MITEL)

Page 1
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)
Single Chip Broadband Solution
Wide Dynamic Range RF Input
Low Phase Noise Balanced Internal Local Oscillator
Wide Frequency Range: 50 to 860 MHz
ESD Protection 2kV min., MIL-STD-883B Method 3015
Cat.1 (Normal ESD handling procedures should be observed)
Applications
Double Conversion Tuners
Digital Terrestrial Tuners
Data Transmit Systems
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, θ
JA
Chip to case, θ
JC
20·3V to 17V
2·5V
20·3 to VCC 10·3V
255°C to 1150°C
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
Page 2
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
VCC/LNA
Figure 2 Pin connections - top view
Electrical Characteristics
Tamb = 240°C to 185°C, VCC = 5V 65%, VEE = 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 VCC 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
0·5
220
10
9,11,14
7,8 7,8 7,8 7,8
50
25
8
21
6·5
97
10
8
mA
MHz
dBµV
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, fRF 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
dBµV
dBc dBµV dBµV
dBc
dBc/Hz
dBµV dBµV
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3
SL2030
Electrical Characteristics (continued)
139
117
1·0
294
1
95 25
Characteristic
Two tones at 92dBµV Two tones at 92dBµV 128 channels at 62dBµV Maximum tuning range 0·9GHz 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
dBµV dBµV
dBc
GHz
dBc/Hz
GHz
dBµV dBµV dBµV
Typ.
153 126
2·1
285
1·3
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 1·1 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.
3·3p
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)
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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
C38C47
15V
C43 C46
R11
SCL5
5V
SDA5
J3
3
4
5
6
I2C BUS
NOTE: Refer to Table 1 for component values
C41
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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
1·5pF
1pF 1pF
100pF 100pF 100pF
10µF
100nF 100nF 100pF 100pF 100nF 100nF
2pF
100pF
1nF
33nF
1nF
Value/type Component
1·5pF
18pF
330nF
1nF 1nF
100nF
1nF
100pF
4·7µF 3·3nF
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
6·8nH 6·8nH
220
20
1k 120 120
15k 22k 15k
1k
4·7k
50
Resonator (Figure 7)
BCW31
4MHz crystal
Value/type
0·5
1·0
1·5
1·5
3 3 3
0·5
0·5
Table 1 Component values for Figure 6
Figure 7 Microstrip resonator (dimensions are in mm)
Page 6
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