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PDF LTC5553 Data sheet ( Hoja de datos )
| Número de pieza | LTC5553 | |
| Descripción | 3GHz to 20GHz Microwave Mixer | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Features
nn Upconversion or Downconversion
nn High IIP3: +24.3dBm at 10GHz
+21.5dBm at 17GHz
nn 9dB Conversion Loss at 10GHz
nn +16dBm Input P1dB at 10GHz
nn Integrated LO Buffer: 0dBm LO Drive
nn Low LO-RF Leakage: <–25dBm
nn 50Ω Wideband Matched RF, LO and IF Ports
nn 3.3V/132mA Supply
nn Fast Turn ON/OFF for TDD Operation
nn 3mm × 2mm, 12-Lead QFN Package
Applications
nn 5G Broadband Wireless Access
nn Microwave Transceivers
nn Wireless Backhaul
nn Point-to-Point Microwave
nn Phased-Array Antennas
nn C, X and Ku Band RADAR
nn Test Equipment
nn Satellite Modems
LTC5553
3GHz to 20GHz
Microwave Mixer
Description
The LTC®5553 is a high performance, microwave double
balanced passive mixer that can be used for frequency
upconversion or downconversion.
The LTC5553’s mixer and integrated RF balun are optimized
to cover the 3GHz to 20GHz RF frequency range. The
device includes an integrated LO amplifier optimized for
the 1GHz to 20GHz frequency range, requiring only 0dBm
drive. The integrated IF balun is optimized to cover a very
wide, 500MHz to 9GHz, frequency range while providing
a single-ended 50Ω interface.
The LTC5553 delivers exceptionally high IIP3 and P1dB,
in addition to low LO to RF and LO to IF leakages. The part
also offers a high level of integration in a small package.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Analog
Devices, Inc. All other trademarks are the property of their respective owners. Protected by U.S.
patents, including 9312815.
Electrostatic Sensitive Device
Observe Handling Precautions
ESD Sensitivity:
HBM = Class 0 on Pin 11
Class 1C All Other Pins
CDM = 500V All Pins
Typical Application
LNA
DUPLEXER
PA
LTC5553
RF IF
LO
RX
IFOUT
RX
LO
TX
LO
LO
RF IF
TX
IFIN
LTC5553
5553 TA01a
Conversion Loss and IIP3
(Low Side LO, IF = 1890MHz)
29
27
DOWNMIXING
UPMIXING
25
23
IIP3
21
19
17
15
13
11 CONVERSION LOSS
9
7
3 5 7 9 11 13 15 17 19 21
RF FREQUENCY (GHz)
5553 TA01b
For more information www.linear.com/LTC5553
5553f
1
1 page  
LTC5553
Typical Performance Characteristics 3GHz to 20GHz downmixer application.
VCC = 3.3V, EN = high, TC = 25°C, PLO = 0dBm, PRF = –6dBm (–6dBm/tone for two-tone IIP3 tests, Δf = 2MHz), IF = 1890MHz, unless
otherwise noted. Test circuit shown in Figure 1.
Conversion Loss and IIP3 vs
RF Frequency (Low Side LO)
29
27 IIP3
25
23
–40°C
25°C
85°C
105°C
21
19
17
15
13
11 CONVERSION LOSS
9
7
3 5 7 9 11 13 15 17 19 21
RF FREQUENCY (GHz)
5553 G03
Conversion Loss and IIP3 vs
RF Frequency (High Side LO)
29
27
–40°C
25°C
25 85°C
23 IIP3 105°C
21
19
17
15
13
11 CONVERSION LOSS
9
7
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
RF FREQUENCY (GHz)
5553 G04
Conversion Loss and IIP3 vs
RF Frequency (Low Side LO)
30
28
26
IIP3
LO = –6dBm
LO = 0dBm
LO = 6dBm
24
22
20
18
16
14
12
10 CONVERSION LOSS
8
3 5 7 9 11 13 15 17 19 21
RF FREQUENCY (GHz)
5553 G05
Conversion Loss and IIP3 vs
RF Frequency (High Side LO)
28
26 IIP3
24
LO = –6dBm
LO = 0dBm
LO = 6dBm
22
20
18
16
14
12 CONVERSION LOSS
10
8
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
RF FREQUENCY (GHz)
5553 G06
Conversion Loss and IIP3
vs RF Frequency (Low Side LO)
29
27 IIP3
25
VCC = 3.0V
VCC = 3.3V
VCC = 3.6V
23
21
19
17
15
13
11
9 CONVERSION LOSS
7
3 5 7 9 11 13 15 17 19 21
RF FREQUENCY (GHz)
5553 G07
Conversion Loss and IIP3 vs
RF Frequency (High Side LO)
28
26 IIP3
24
VCC = 3.0V
VCC = 3.3V
VCC = 3.6V
22
20
18
16
14
12 CONVERSION LOSS
10
8
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
RF FREQUENCY (GHz)
5553 G08
For more information www.linear.com/LTC5553
5553f
5
5 Page 
LTC5553
Applications Information
The RF input impedance and input reflection coefficient
versus RF frequency is listed in Table 1. The reference plane
for this data is Pin 5 of the IC, with no external matching,
and the LO is driven at 12GHz.
Table 1. RF Port Impedance and S11
(at Pin 5, No External Matching, LO Input Driven at 12GHz)
FREQUENCY
(GHz)
RF IMPEDANCE
S11
MAG ANGLE
3
62.7 + j40.8
0.36
52.8
4
69.5 + j7.7
0.18
17.9
5
55.7 + j2.4
0.06
21.3
6
55.4 + j10.1
0.11
56.3
7
53.5 + j2.6
0.04
35.3
8
54.1 – j1.7
0.04
–21.8
9
52.7 – j7.3
0.08
–65.8
10
48.4 – j10.4
0.11
–92.5
11
46.6 – j14.8
0.16
–94.2
12
29.4 – j40.8
0.51
–89.6
13
28.7 – j15.6
0.33
–132.5
14
25.6 – j17.7
0.39
–130.8
15
26.0 – j15.4
0.37
–135.9
16
26.2 – j7.6
0.33
–156.5
17
25.4 + j5.2
0.33
164.3
18
21.6 + j14.8
0.44
140.8
19
19.8 + j18.9
0.49
132.9
20
19.6 + j17.2
0.49
136.5
LO Input
The mixer’s LO input, shown in Figure 5, consists of a
single-ended to differential conversion and high speed
limiting differential amplifier. The LO amplifier is optimized
for the 1GHz to 20GHz LO frequency range. LO frequencies
above or below this frequency range may be used with
degraded performance.
The DC voltage at the LO input is about 1.6V. A DC block-
ing capacitor (C1) is required.
LTC5553
LO 11
C1 LO
5553 F05
Figure 5. Simplified LO Input Schematic
The LO is 50Ω matched from 1GHz to 20GHz. External
matching components may be needed for extended LO
operating frequency range. The measured LO input return
loss is shown in Figure 6. The nominal LO input level is
0dBm, although the limiting amplifiers will deliver excellent
performance over a ±6dBm input power range.
0 EN = HIGH
5 EN = LOW
10
15
20
25
30
35
1 3 5 7 9 11 13 15 17 19 21
LO FREQUENCY (GHz)
5553 F06
Figure 6. LO Input Return Loss
The LO input impedance and input reflection coefficient
versus frequency, is shown in Table 2.
For more information www.linear.com/LTC5553
5553f
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet LTC5553.PDF ] | |
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