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LT5520EUF#TRPBF

P1-P3P4-P6P7-P9P10-P12
LT5520
1
5520f
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
■
Wide RF Output Frequency Range: 1.3GHz
to 2.3GHz
■
15.9dBm Typical Input IP3 at 1.9GHz
■
On-Chip RF Output Transformer
■
No External LO or RF Matching Required
■
Single-Ended LO and RF Operation
■
Integrated LO Buffer: –5dBm Drive Level
■
Low LO to RF Leakage: – 41dBm Typical
■
Wide IF Frequency Range: DC to 400MHz
■
Enable Function with Low Off-State Leakage Current
■
Single 5V Supply
■
Small 16-Lead QFN Plastic Package
■
Wireless Infrastructure
■
Cable Downlink Infrastructure
■
Point-to-Point Data Communications
■
High Linearity Frequency Conversion
1.3GHz to 2.3GHz
High Linearity
Upconverting Mixer
The LT
®
5520 mixer is designed to meet the high linearity
requirements of wireless and cable infrastructure trans-
mission applications. A high-speed, internally matched,
LO amplifier drives a double-balanced mixer core, allow-
ing the use of a low power, single-ended LO source. An RF
output transformer is integrated, thus eliminating the
need for external matching components at the RF output,
while reducing system cost, component count, board area
and system-level variations. The IF port can be easily
matched to a broad range of frequencies for use in many
different applications.
The LT5520 mixer delivers 15.9dBm typical input 3rd
order intercept point at 1.9GHz with IF input signal levels
of –10dBm. The input 1dB compression point is typically
4dBm. The IC requires only a single 5V supply.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Figure 1. Frequency Conversion in Wireless Infrastructure Transmitter
RF Output Power and Output IM3 vs
IF Input Power (Two Input Tones)
IF
+
IF
–
LO
–
LO
+
RF
+
RF
–
PA
LO INPUT
–5dBm
BIAS
EN V
CC1
V
CC2
V
CC3
5V
DC
5520 F01
BPF
BPF
GND
IF
INPUT
4:1
220pF
220pF
15pF
100Ω
100Ω
(OPTIONAL)
1µF 1000pF
39nH
RF
OUTPUT
10pF
5pF5pF
85Ω
LT5520
IF INPUT POWER (dBm/TONE)
–16
P
OUT
, IM3 (dBm/TONE)
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
0
5520 • F01b
–12
–8
–4
4
P
LO
= –5dBm
f
LO
= 1760MHz
f
IF1
= 140MHz
f
IF2
= 141MHz
f
RF
= 1900MHz
T
A
= 25°C
P
OUT
IM3
LT5520
2
5520f
Supply Voltage ....................................................... 5.5V
Enable Voltage ............................. –0.3V to (V
CC
+ 0.3V)
LO Input Power (Differential).............................. 10dBm
RF
+
to RF
–
Differential DC Voltage...................... ±0.13V
RF Output DC Common Mode Voltage ......... –1V to V
CC
IF Input Power (Differential) ............................... 10dBm
IF
+
, IF
–
DC Currents.............................................. 25mA
LO
+
to LO
–
Differential DC Voltage .......................... ±1V
LO Input DC Common Mode Voltage............ –1V to V
CC
Operating Temperature Range .................–40°C to 85°C
Storage Temperature Range ................. –65°C to 125°C
Junction Temperature (T
J
)....................................125°C
ORDER PART
NUMBER
UF PART
MARKING
T
JMAX
= 125°C, θ
JA
= 37°C/W
5520
LT5520EUF
ABSOLUTE AXI U RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UUW
(Note 1)
ELECTRICAL CHARACTERISTICS
Consult LTC Marketing for parts specified with wider operating temperature ranges.
16 15 14 13
5 6 7 8
TOP VIEW
UF PACKAGE
16-LEAD (4mm × 4mm) PLASTIC QFN
EXPOSED PAD IS GND (PIN 17),
MUST BE SOLDERED TO PCB
9
10
11
12
4
3
2
1
EN
V
CC1
V
CC2
V
CC3
GND
IF
+
IF
–
GND
GND
RF
+
RF
–
GND
GND
LO
–
LO
+
GND
17
DC ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
IF Input Frequency Range DC to 400 MHz
LO Input Frequency Range 900 to 2700 MHz
RF Output Frequency Range 1300 to 2300 MHz
1900MHz Application: V
CC
= 5V
DC
, EN = High, T
A
= 25°C, IF input = 140MHz at –10dBm, LO input = 1.76GHz at –5dBm, RF output
measured at 1900MHz, unless otherwise noted. Test circuit shown in Figure 2. (Notes 2, 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
IF Input Return Loss Z
O
= 50Ω, with External Matching 20 dB
LO Input Return Loss Z
O
= 50Ω 16 dB
RF Output Return Loss Z
O
= 50Ω 20 dB
LO Input Power –10 to 0 dBm
Conversion Gain –1 dB
Input 3rd Order Intercept –10dBm/Tone, ∆f = 1MHz 15.9 dBm
Input 2nd Order Intercept –10dBm, Single-Tone 45 dBm
LO to RF Leakage –41 dBm
LO to IF Leakage –35 dBm
Input 1dB Compression 4 dBm
IF Common Mode Voltage Internally Biased 1.77 V
DC
Noise Figure Single Side Band 15 dB
(Test Circuit Shown in Figure 2) V
CC
= 5V
DC
, EN = High , T
A
= 25°C (Note 3), unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Enable (EN) Low = Off, High = On
Turn-On Time (Note 4) 2 µs
Turn-Off Time (Note 4) 6 µs
Input Current V
ENABLE
= 5V
DC
110 µA
LT5520
3
5520f
RF OUTPUT FREQUENCY (MHz)
1300 1300
GAIN, NF (dB)
18
16
14
12
10
8
6
4
2
0
–2
–4
23002100
5520 • GO3
1500
1700
1900
2500
RF OUTPUT FREQUENCY (MHz)
1500 2300
1700
1900
2100
2500
RF OUTPUT FREQUENCY (MHz)
1300 1500 2300
1700
1900
2100
2500
IIP3 (dBm)
32
30
28
26
24
22
20
18
16
14
12
5520 • GO4
LO LEAKAGE (dBm)
–10
–20
–30
–40
–50
–60
5520 • GO5
SUPPLY VOLTAGE (V)
4.0 4.25
SUPPLY CURRENT (mA)
4.5 5.04.75
5.25
5.5 4.0 4.25 4.5 5.04.75
5.25
5.5
5520 • GO1
66
64
62
60
58
56
54
52
50
SUPPLY VOLTAGE (V)
SHUTDOWN CURRENT (µA)
5520 • GO2
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
T
A
= –40°C
T
A
= 85°C
T
A
= 25°C
HIGH SIDE LO
HIGH SIDE LO
HIGH SIDE LO
HIGH SIDE LO
LOW SIDE AND HIGH SIDE LO
LOW SIDE LO
LOW SIDE LO
LOW SIDE LO
LOW SIDE LO
SSB NF
GAIN
IIP2
IIP3
55
50
45
40
35
30
25
20
15
10
5
IIP2 (dBm)
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
(Test Circuit Shown in Figure 2) V
CC
= 5V
DC
, EN = High , T
A
= 25°C (Note 3), unless otherwise noted.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: External components on the final test circuit are optimized for
operation at f
RF
= 1900MHz, f
LO
= 1.76GHz and f
IF
= 140MHz.
Note 3: Specifications over the –40°C to 85°C temperature range are
assured by design, characterization and correlation with statistical process
controls.
Note 4: Turn-On and Turn-Off times are based on the rise and fall times of
the RF output envelope from full power to –40dBm with an IF input power
of –10dBm.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Supply Current
vs Supply Voltage
Shutdown Current
vs Supply Voltage
PARAMETER CONDITIONS MIN TYP MAX UNITS
Enable = High (On) 3V
DC
Enable = Low (Off) 0.5 V
DC
Power Supply Requirements (V
CC
)
Supply Voltage 4.5 to 5.25 V
DC
Supply Current V
CC
= 5V
DC
60 70 mA
Shutdown Current EN = Low 1 100 µA
Conversion Gain and SSB Noise
Figure vs RF Output Frequency
IIP3 and IIP2
vs RF Output Frequency
LO-RF Leakage
vs RF Output Frequency
V
CC
= 5V
DC
, EN = High, T
A
= 25°C, IF input = 140MHz at –10dBm, LO input = 1.76GHz at –5dBm, RF output measured at 1900MHz,
unless otherwise noted. For 2-tone inputs: 2nd IF input = 141MHz at –10dBm. (Test Circuit Shown in Figure 2.)
(Test Circuit Shown in Figure 2)
DC ELECTRICAL CHARACTERISTICS
P1-P3P4-P6P7-P9P10-P12

LT5520EUF#TRPBF

Mfr. #:
Buy LT5520EUF#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
RF Mixer 1.3GHz to 2.3GHz Upconverting Mixer
Lifecycle:
New from this manufacturer.
Delivery:
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