LTC5562
LF–7GHz
Wideband Low Power Active Mixer
FEATURES
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DESCRIPTION
The
LTC
®
5562
is a versatile low power mixer optimized for
applications requiring wide input bandwidth, low distor-
tion and low LO leakage. This mixer can be used for either
upconverting or downconverting applications, and provides
a nominal conversion gain of 1dB. The differential input is
optimized for use with a 1:1 transmission-line balun, the
input is 50Ω broadband matched from 30MHz to 7GHz.
The LO can be differential or single-ended and requires
only –1dBm of LO power to achieve excellent distortion
and noise performance. The impedance match at the LO
input is maintained during shutdown. This mixer offers low
LO leakage, greatly reducing the need for output filtering
to meet LO suppression requirements.
The LTC5562 uses a 3.3V supply for low power consump-
tion and the enable control allows the part to be shut
down for further power savings. The total mixer current
is adjustable, by simply adding a resistor in series with
the LGND pin, for applications requiring even lower power.
All registered trademarks and trademarks are the property of their respective owners.
Wideband Frequency Range to 7GHz
Low Power: 2.7V to 3.6V, 40mA Supply
Supply Current Adjustable Down to 15mA
Up or Downconversion
OIP3: +20dBm at 3.6GHz Out
Conversion Gain: +1dB
Low LO Drive:
–4dBm
to +2dBm
LO Impedance Match Maintained During Shutdown
Enable Control, 10µA Shutdown Current
2kV ESD (HBM and CDM)
–40°C to 105°C Operation
Small 2mm × 2mm 10-Lead QFN Package
APPLICATIONS
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Portable Radios
Portable Test Instruments
Wireless Infrastructure
Fixed Wireless Access Equipment
VHF & UHF Mixer
Wireless Repeaters
TYPICAL APPLICATION
3.6GHz Upconverting Mixer
10nF
EN
240MHz
IN
50Ω
T1
1:1
1nF
EN
IN
–
1µF
V
CC
BIAS
OUT
–
1nF
TC1-1-13
R1
IN
+
LGND
+
–
LTC5562
GAIN (dB), OIP3 (dBm)
GND V
CC
3.6nH
3.6nH
1.2pF
T2
4:1
OUT
+
2.7nH 1.2pF
NCS4-442+
3.6GHz
OUT
LO
+
0.9pF
1.5nH
LO
–
5562 TA01a
100pF
10pF
3.36GHz
LO
50
30
24
28
22
26
20 OIP3
24
18
f
IN
= 240MHz 22
T
C
= – 40°C
16
25°C
LOW SIDE LO 20
14
85°C
V
CC
= 3.3V
18
12
105°C
16
10
14
8
12
6
NF
10
4
8
2 GAIN
6
0
4
–2
3400
3600
3800
4000
4200
4400
OUTPUT FREQUENCY (MHz)
5562 TA01a
Conversion Gain, OIP3 and NF vs f
OUT
P
LO
LO
–2dBm, I
TOTAL
= 35mA (R1 = 5 )
=
Total
For more information
www.linear.com/LTC5562
1
5562f
NF (dB)
LTC5562
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PIN CONFIGURATION
TOP VIEW
LGND
IN
+
IN
–
8
7
6
5
OUT
–
GND
V
CC
Supply Voltage (V
CC
, OUT
+
, OUT
–
) ..........................4.0V
EN Voltage ........................................ –0.3V to V
CC
+0.3V
LO
+
, LO
–
Input Power ........................................ +10dBm
IN
+
, IN
–
Input Power .......................................... +15dBm
Operating Temperature Range (T
C
) ........ –40°C to 105°C
Junction Temperature (T
J
) .................................... 150°C
Storage Temperature Range .................. –65°C to 150°C
10 9
LO
+
1
LO
–
2
3
EN
11
4
OUT
+
UC PACKAGE
10-LEAD (2mm
×
2mm) PLASTIC QFN
T
JMAX
= 150°C,
θ
JC
= 25°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LTC5562IUC#PBF
TAPE AND REEL
LTC5562IUC#TRPBF
http://www.linear.com/product/LTC5562#orderinfo
PART MARKING
LGZQ
PACKAGE DESCRIPTION
10-Lead (2mm × 2mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 105°C
Consult ADI Marketing for parts specified with wider operating temperature ranges.
Consult ADI Marketing for information on lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/.
Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
2
5562f
For more information
www.linear.com/LTC5562
LTC5562
DC ELECTRICAL CHARACTERISTICS
PARAMETER
Supply Voltage (V
CC
)
Supply Current, EN = High
R1 = 0
R1 = 10
R1 = 20
R1 = 60
Shutdown
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The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at V
CC
= 3.3V, T
C
= 25°C. Test circuits shown in Figures 1 and 2. (Note 2)
CONDITIONS
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MIN
2.7
TYP
3.3
40
30
25
15
10
MAX
3.6
46
UNITS
V
mA
Supply Current, EN = Low
Enable Logic Input (EN)
EN Input High Voltage (On)
EN Input Low Voltage (Off)
EN Input Current
Turn-On Time
Turn-Off Time
µA
V
0.5
V
µA
µs
µs
25
1.8
–15
0.1
0.5
–0.3V to V
CC
+ 0.3V
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at V
CC
= 3.3V, EN = High, T
C
= 25°C, P
LO
= –1dBm, R1 = 0 . Test circuits shown in
Figures 1 and 2. (Notes 2, 3, 4)
PARAMETER
LO Input Frequency Range
Input Frequency Range
Output Frequency Range
Input Return Loss
LO Input Return Loss
Output Impedance
CONDITIONS
External Matching Required
External Matching Required
External Matching Required
Z
O
= 50 , External Matching Required Below 30MHz
Z
O
= 50 , External Matching Required
Differential at 900MHz
Differential at 3.5GHz
Differential at 5.8GHz
Single-Ended or Differential
f
LO
= 1MHz to 1.8GHz
f
LO
= 1.8GHz to 4.5GHz
f
LO
> 4.5GHz
f
LO
= 1MHz to 1.8GHz
f
LO
= 1.8GHz to 4.4GHz
f
LO
> 4.4GHz
–4
l
l
l
AC ELECTRICAL CHARACTERISTICS
MIN
TYP
LF-9
LF-7
DC-7
>12
>10
650 || 0.3pF
350 || 0.3pF
120 || 0.3pF
–1
< –45
< –35
< –30
< –37
< –35
< –30
MAX
UNITS
GHz
GHz
GHz
dB
dB
R || C
R || C
R || C
LO Input Power
LO to IN Leakage
2
dBm
dBm
dBm
dBm
dBm
dBm
dBm
LO to OUT Leakage
For more information
www.linear.com/LTC5562
3
5562f
LTC5562
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
C
= 25°C. V
CC
= 3.3V, EN = High, P
IN
= –12dBm (–12dBm/Tone for 2-tone
tests), P
LO
= –1dBm, R1 = 0 , unless otherwise noted. Test circuit shown in Figure 1. (Notes 2, 3, 4)
Upconverting Applications
PARAMETER
Conversion Gain
CONDITIONS
f
IN
= 140MHz, f
OUT
= 900MHz, High Side LO
f
IN
= 240MHz, f
OUT
= 3.6GHz, Low Side LO
f
IN
= 900MHz, f
OUT
= 5.8GHz, Low Side LO
T
C
= –40°C to 105ºC, f
OUT
= 3.6GHz
f
IN
= 140MHz, f
OUT
= 900MHz, High Side LO
f
IN
= 240MHz, f
OUT
= 3.6GHz, Low Side LO
f
IN
= 900MHz, f
OUT
= 5.8GHz, Low Side LO
∆f
IN
= 141MHz, f
OUT
= 900MHz, High Side LO
∆f
IN
= 241MHz, f
OUT
= 3.6GHz, Low Side LO
∆f
IN
= 901MHz, f
OUT
= 5.8GHz, Low Side LO
f
IN
= 140MHz, f
OUT
= 900MHz, High Side LO
f
IN
= 240MHz, f
OUT
= 3.6GHz, Low Side LO
f
IN
= 900MHz, f
OUT
= 5.8GHz, Low Side LO
f
IN
= 240MHz, f
OUT
= 3.6GHz, Low Side LO
f
IN
= 140MHz, f
OUT
= 900MHz, High Side LO
f
IN
= 240MHz, f
OUT
= 3.6GHz, Low Side LO
f
IN
= 900MHz, f
OUT
= 5.8GHz, Low Side LO
f
IN
= 140MHz, f
OUT
= 900MHz, High Side LO
f
IN
= 240MHz, f
OUT
= 3.6GHz, Low Side LO
f
IN
= 900MHz, f
OUT
= 5.8GHz, Low Side LO
f
IN
= 140MHz, f
OUT
= 900MHz, High Side LO
f
IN
= 240MHz, f
OUT
= 3.6GHz, Low Side LO
f
IN
= 900MHz, f
OUT
= 5.8GHz, Low Side LO
f
IN
= 140MHz, f
OUT
= 900MHz, High Side LO
f
IN
= 240MHz, f
OUT
= 3.6GHz, Low Side LO
f
IN
= 900MHz, f
OUT
= 5.8GHz, Low Side LO
f
IN
= 140MHz, f
OUT
= 900MHz, High Side LO
f
IN
= 240MHz, f
OUT
= 3.6GHz, Low Side LO
f
IN
= 900MHz, f
OUT
= 5.8GHz, Low Side LO
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AC ELECTRICAL CHARACTERISTICS
MIN
0.3
TYP
1.5
1
2
–0.01
21
19
17
36
36
31
13.5
14.6
15.9
–157
6
5
4.5
–37
–35
–30
–50
–39
–30
65
68
68
60
56
62
MAX
UNITS
dB
dB
dB
dB/°C
dBm
dBm
dBm
dBm
dBm
dBm
dB
dB
dB
dBm/Hz
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dB
dB
dB
dB
dB
dB
Conversion Gain vs Temperature
Two-Tone Output 3rd Order Intercept
(∆f = 2MHz)
Two-Tone Output 2nd Order Intercept
18
SSB Noise Figure
Output Noise Floor at P
IN
= 0dBm
Input 1dB Compression
LO-OUT Leakage
LO-IN Leakage
IN to OUT Isolation
IN-LO Isolation
4
5562f
For more information
www.linear.com/LTC5562
LTC5562
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
C
= 25°C. V
CC
= 3.3V, EN = High, P
RF
= –12dBm (–12dBm/Tone for 2-tone
tests), P
LO
= –1dBm, R1 = 0 . Test circuit shown in Figure 2. (Notes 2, 3, 4)
Downconverting Applications
PARAMETER
Conversion Gain
CONDITIONS
f
IN
= 900MHz, f
OUT
= 140MHz, High Side LO
f
IN
= 3.6GHz, f
OUT
= 456MHz, High Side LO
f
IN
= 5.8GHz, f
OUT
= 800MHz, Low Side LO
T
C
= –40°C to 105°C, f
OUT
= 3.6 GHz
f
IN
= 900MHz, f
OUT
= 140MHz, High Side LO
f
IN
= 3.6GHz, f
OUT
= 456MHz, High Side LO
f
IN
= 5.8GHz, f
OUT
= 800MHz, Low Side LO
f
IN
= 900MHz, f
OUT
= 140MHz, High Side LO
f
IN
= 3.6GHz, f
OUT
= 456MHz, High Side LO
f
IN
= 5.8GHz, f
OUT
= 800MHz, Low Side LO
f
IN
= 3.6GHz, f
OUT
= 350MHz, Low Side LO
f
IN
= 900MHz, f
OUT
= 140MHz, High Side LO
f
IN
= 3.6GHz, f
OUT
= 456MHz, High Side LO
f
IN
= 5.8GHz, f
OUT
= 800MHz, Low Side LO
f
IN
= 900MHz, f
OUT
= 140MHz, High Side LO
f
IN
= 3.6GHz, f
OUT
= 456MHz, High Side LO
f
IN
= 5.8GHz, f
OUT
= 800MHz, Low Side LO
f
IN
= 900MHz, f
OUT
= 140MHz, High Side LO
f
IN
= 3.6GHz, f
OUT
= 456MHz, High Side LO
f
IN
= 5.8GHz, f
OUT
= 800MHz, Low Side LO
f
IN
= 900MHz, f
OUT
= 140MHz, High Side LO
f
IN
= 3.6GHz, f
OUT
= 456MHz, High Side LO
f
IN
= 5.8GHz, f
OUT
= 800MHz, Low Side LO
f
IN
= 900MHz, f
OUT
= 140MHz, High Side LO
f
IN
= 3.6GHz, f
OUT
= 456MHz, High Side LO
f
IN
= 5.8GHz, f
OUT
= 800MHz, Low Side LO
f
IN
= 5400MHz, f
LO
= 5000MHz, f
SPUR
= 800MHz
f
IN
= 5249.67Hz, f
LO
= 4983MHz, f
SPUR
= 800MHz
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AC ELECTRICAL CHARACTERISTICS
MIN
TYP
1.9
2
2
–0.01
19
16
14
13.9
14.2
14.6
–158
7
6
5.5
–45
–55
–45
–55
–38
–39
50
60
44
42
39
58
–62
–82
MAX
UNITS
dB
dB
dB
dB/°C
dBm
dBm
dBm
dB
dB
dB
dBm/Hz
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dB
dB
dB
dB
dB
dB
dBc
dBc
Conversion Gain vs Temperature
Two-Tone Input 3rd Order Intercept
(∆f = 2MHz)
SSB Noise Figure
Output Noise Floor at P
IN
= 0dBm
Input 1dB Compression
LO-OUT Leakage
LO-IN Leakage
IN to OUT Isolation
IN-LO Isolation
1/2 IF Output Spurious Product
1/3 IF Output Spurious Product
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
The LTC5562 is guaranteed functional over the –40°C to 105°C
case temperature range.
Note 3:
SSB Noise Figure measured with a small-signal noise source,
bandpass filter and 3dB matching pad on IN port, and bandpass filter on
the LO input.
Note 4:
Specified performance includes all external components and
evaluation PCB losses.
For more information
www.linear.com/LTC5562
5
5562f
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