FeaTures
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LTC5576
3GHz to 8GHz
High Linearity Active
Upconverting Mixer
DescripTion
The
LTC
®
5576
is a high linearity active mixer optimized for
upconverting applications requiring wide input bandwidth,
low distortion and low LO leakage. The integrated output
transformer is optimized for 4GHz to 6GHz applications,
but is easily retuned for output frequencies as low as 3GHz,
or as high as 8GHz, with minor performance degradation.
The input is optimized for use with 1:1 transmission-line
baluns, allowing very wideband impedance matching.
The LO input port is single-ended and requires only 0dBm
of LO power to achieve excellent distortion and noise per-
formance while also reducing circuit requirements. The
LTC5576 offers low LO leakage, reducing the demands
of output filtering to meet LO suppression requirements.
The LTC5576 is optimized for 5V but can also be used
with a 3.3V supply with slightly reduced performance. The
enable function allows the part to be easily shut down for
further power savings.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
25dBm OIP3
–0.6dB Conversion Gain
14.1dB Noise Figure at 5.8GHz
–154dBm/Hz Output Noise Floor
Low LO-RF Leakage
0dBm LO Drive
Broadband 50Ω Matched Input
High Input P1dB: 10dBm at 5V
5V or 3.3V Supply at 99mA
Single-Ended Output and LO Input
Enable Pin
–40°C to 105°C Operation (T
C
)
16-Lead (4mm × 4mm) QFN Package
applicaTions
n
n
n
n
Wideband Transmitters
4G and 5G Wireless Infrastructure
Fixed Wireless Access Equipment
Wireless Repeaters
Typical applicaTion
100pF
LO
50
0.3pF
30
OIP3 and Conversion Gain vs
Output Frequency (LSLO)
15
TEMPERATURE
MONITOR
TC1-1-13M
1:1
100pF
TEMP
LO
OIP3 (dBm)
25
20
f
IN
= 456MHz
f
IN
= 900MHz
OIP3
G
C
10
5
GAIN (dB)
IN
50
IN
+
IN
–
BIAS
V
CC
IADJ
2.61k
5V
10nF
1µF
5576 TA01a
15
10
0
–5
100pF
OUT
0.2pF
OUT
50
LGND
EN
EN
T
C
= 25°C, OUTPUT TUNED FOR EACH BAND
5
–10
3000
4000
5000
6000
7000
8000
OUTPUT FREQUENCY (MHz)
5576 TA01b
5576fa
For more information
www.linear.com/LTC5576
1
LTC5576
absoluTe MaxiMuM raTings
(Note 1)
pin conFiguraTion
TOP VIEW
GND
GND
12 GND
17
11 GND
10 OUT
9
5
EN
6
V
CC
7
V
CC
8
IADJ
GND
LO
TP
TEMP 1
IN
+
2
IN
–
3
LGND 4
Supply Voltage (V
CC
) ..................................................6V
Enable Voltage .................................–0.3V to V
CC
+ 0.3V
IADJ Pin Voltage ..........................................–0.3 to 2.7V
LO Input Power (1GHz to 8GHz) ......................... +10dBm
IN
+
, IN
–
Input Power (30MHz to 6GHz) .............. +15dBm
TEMP Input Current ...............................................10mA
Operating Temperature Range (T
C
) ........ –40°C to 105°C
Junction Temperature (T
J
) .................................... 150°C
Storage Temperature Range .................. –65°C to 150°C
16 15 14 13
UF PACKAGE
16-LEAD (4mm
×
4mm) PLASTIC QFN
T
JMAX
= 150°C,
θ
JC
= 6°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH
LTC5576IUF#PBF
TAPE AND REEL
LTC5576IUF#TRPBF
(http://www.linear.com/product/LTC5576#orderinfo)
PART MARKING
5576
PACKAGE DESCRIPTION
16-Lead (4mm × 4mm) Plastic QFN
CASE TEMPERATURE RANGE
–40°C to 105°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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.
Dc elecTrical characTerisTics
PARAMETER
Supply Voltage (V
CC
)
Supply Current
CONDITIONS
5V Supply
3.3V Supply
5V, R1 = 2.61kΩ
3.3V, R1 = 649Ω
Shutdown (EN = Low)
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
C
= 25°C, V
CC
= 5V. Test circuit shown in Figure 1. (Note 2)
MIN
l
l
TYP
5
3.3
99
85
1.3
MAX
5.3
3.5
112
UNITS
V
V
mA
mA
mA
V
4.5
3.1
Enable Logic Input (EN)
EN Input High Voltage (On)
EN Input Low Voltage (Off)
EN Input Current
Turn-On Time
Turn-Off Time
Current Adjust Pin (IADJ)
Open Circuit DC Voltage
Short Circuit DC Current
Temperature Sensing Diode (TEMP)
DC Voltage at T
J
= 25°C
Voltage Temperature Coefficient
I
IN
= 10μA
I
IN
= 80μA
I
IN
= 10μA
I
IN
= 80μA
697
755
–1.80
–1.61
mV
mV
mV/°C
mV/°C
5576fa
1.8
0.5
–0.3V to V
CC
+ 0.3V
–20
0.6
0.6
1.8
1.9
200
V
µA
µs
µs
V
mA
2
For more information
www.linear.com/LTC5576
LTC5576
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
C
= 25°C. V
CC
= 5V, EN = High, P
LO
= 0dBm. Test circuit shown in Figure 1.
(Notes 2, 3)
PARAMETER
LO Input Frequency Range
Input (IN) Frequency Range
Output (OUT) Frequency Range
Input Return Loss
LO Input Return Loss
LO Input Power
LO to IN Leakage
IN to LO Isolation
CONDITIONS
External Matching Required
External Matching Required
External Matching Required
Z
O
= 50Ω
Z
O
= 50Ω
Single-Ended
f
LO
= 1GHz to 8GHz
f
IN
= 0.1GHz to 6GHz
l
l
l
l
ac elecTrical characTerisTics
MIN
TYP
1 to 8
0.03 to 6
3 to 8
>10
>10
MAX
UNITS
GHz
GHz
GHz
dB
dB
–6
0
≤–30
>35
6
dBm
dBm
dB
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
C
= 25°C. V
CC
= 5V, EN = High, P
IN
= –10dBm (–10dBm/Tone for 2-tone tests, ∆f =
2MHz), P
LO
= 0dBm, unless otherwise noted. Test circuit shown in Figure 1. (Notes 2, 3 and 4)
5V Upmixer Application: Low Side LO, P
LO
, = 0dBm, P
IN
= –10dBm
PARAMETER
Conversion Gain
CONDITIONS
f
IN
= 456MHz, f
OUT
= 3.5GHz, f
LO
= 3.044GHz
f
IN
= 900MHz, f
OUT
= 5.8GHz, f
LO
= 4.9GHz
f
IN
= 900MHz, f
OUT
= 8GHz, f
LO
= 7.1GHz
T
C
= –40°C to 105°C, f
OUT
= 5.8GHz
f
IN
= 456MHz, f
OUT
= 3.5GHz, f
LO
= 3.044GHz
f
IN
= 900MHz, f
OUT
= 5.8GHz, f
LO
= 4.9GHz
f
IN
= 900MHz, f
OUT
= 8GHz, f
LO
= 7.1GHz
f
IN
= 456MHz, f
OUT
= 3.5GHz, f
LO
= 3.044GHz
f
IN
= 900MHz, f
OUT
= 5.8GHz, f
LO
= 4.9GHz
f
IN
= 900MHz, f
OUT
= 8GHz, f
LO
= 7.1GHz
f
IN
= 1GHz, f
OUT
= 5801MHz, f
LO
= 4899MHz
f
IN
= 456MHz, f
OUT
= 3.5GHz, f
LO
= 3.044GHz
f
IN
= 900MHz, f
OUT
= 5.8GHz, f
LO
= 4.9GHz
f
IN
= 900MHz, f
OUT
= 8GHz, f
LO
= 7.1GHz
f
IN
= 456MHz, f
OUT
= 3.5GHz, f
LO
= 3.044GHz
f
IN
= 900MHz, f
OUT
= 5.8GHz, f
LO
= 4.9GHz
f
IN
= 900MHz, f
OUT
= 8GHz, f
LO
= 7.1GHz
f
IN
= 456MHz, f
OUT
= 3.5GHz, f
LO
= 3.044GHz
f
IN
= 900MHz, f
OUT
= 5.8GHz, f
LO
= 4.9GHz
f
IN
= 900MHz, f
OUT
= 8GHz, f
LO
= 7.1GHz
l
ac elecTrical characTerisTics
MIN
–1.5
TYP
–0.6
–0.6
–2.0
–0.009
25
25
25
12.4
14.1
17.5
–154
10.8
10.4
10.3
–36
–35
–28
70
38
35
MAX
UNITS
dB
dB
dB
dB/°C
dBm
dBm
dBm
dB
dB
dB
dBm/Hz
dBm
dBm
dBm
dBm
dBm
dBm
dB
dB
dB
Conversion Gain vs Temperature
Output 3rd Order Intercept
SSB Noise Figure
SSB Noise Floor at P
IN
= 5dBm
Input 1dB Compression
LO-OUT Leakage
IN to OUT Isolation
5576fa
For more information
www.linear.com/LTC5576
3
LTC5576
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
= –10dBm (–10dBm/Tone for 2-tone tests, ∆f
= 2MHz), P
LO
= 0dBm, unless otherwise noted. Test circuit shown in Figure 1. (Notes 2, 3 and 4)
3.3V Upmixer Application: Low Side LO, P
LO
, = 0dBm, P
IN
= –10dBm
PARAMETER
Conversion Gain
CONDITIONS
f
IN
= 456MHz, f
OUT
= 3.5GHz, f
LO
= 3.044GHz
f
IN
= 900MHz, f
OUT
= 5.8GHz, f
LO
= 4.9GHz
f
IN
= 900MHz, f
OUT
= 8GHz, f
LO
= 7.1GHz
T
C
= –40°C to 105°C, f
OUT
= 5.8 GHz
f
IN
= 456MHz, f
OUT
= 3.5GHz, f
LO
= 3.044GHz
f
IN
= 900MHz, f
OUT
= 5.8GHz, f
LO
= 4.9GHz
f
IN
= 900MHz, f
OUT
= 8GHz, f
LO
= 7.1GHz
f
IN
= 456MHz, f
OUT
= 3.5GHz, f
LO
= 3.044GHz
f
IN
= 900MHz, f
OUT
= 5.8GHz, f
LO
= 4.9GHz
f
IN
= 900MHz, f
OUT
= 8GHz, f
LO
= 7.1GHz
f
IN
= 1GHz, f
OUT
= 5801MHz, f
LO
= 4899MHz
f
IN
= 456MHz, f
OUT
= 3.5GHz, f
LO
= 3.044GHz
f
IN
= 900MHz, f
OUT
= 5.8GHz, f
LO
=4.9GHz
f
IN
= 900MHz, f
OUT
= 8GHz, f
LO
= 7.1GHz
f
IN
= 456MHz, f
OUT
= 3.5GHz, f
LO
= 3.044GHz
f
IN
= 900MHz, f
OUT
= 5.8GHz, f
LO
= 4.9GHz
f
IN
= 900MHz, f
OUT
= 8GHz, f
LO
= 7.1GHz
f
IN
= 456MHz, f
OUT
= 3.5GHz, f
LO
= 3.044GHz
f
IN
= 900MHz, f
OUT
= 5.8GHz, f
LO
= 4.9GHz
f
IN
= 900MHz, f
OUT
= 8GHz, f
LO
= 7.1GHz
l
ac elecTrical characTerisTics
MIN
TYP
–0.6
–0.6
–2.0
–0.009
21
23
19
11.5
12.8
17.8
–154
8.4
8.5
8.1
–39
–36
–27
70
38
33
MAX
UNITS
dB
dB
dB
dB/°C
dBm
dBm
dBm
dB
dB
dB
dBm/Hz
dBm
dBm
dBm
dBm
dBm
dBm
dB
dB
dB
Conversion Gain vs Temperature
Output 3rd Order Intercept
SSB Noise Figure
SSB Noise Floor at P
IN
= 5dBm
Input 1dB Compression
LO-OUT Leakage
IN to OUT Isolation
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 LTC5576 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 component and
evaluation PCB losses.
4
5576fa
For more information
www.linear.com/LTC5576
LTC5576
Typical Dc perForMance characTerisTics
5V Supply Current vs Supply
Voltage
110
105
SUPPLY CURRENT (mA)
SUPPLY CURRENT (mA)
100
95
90
85
80
75
70
4.5
T
C
= 105°C
85°C
25°C
–40°C
4.7
4.9
5.1
SUPPLY VOLTAGE (V)
5.3
5576 G01
(Test Circuit shown in Figure 1)
3.3V Supply Current vs Supply
Voltage
110
105
100
95
90
85
80
75
70
3
3.1
3.2
3.3
3.4
SUPPLY VOLTAGE (V)
3.5
3.6
5576 G02
R1 = 2.61k
R1 = 649
T
C
= 105°C
85°C
25°C
–40°C
5V, 5800MHz Output Frequency:
T
C
= 25°C. V
CC
= 5V, EN = High, P
IN
= –10dBm (–10dBm/Tone for 2-tone tests, ∆f = 2MHz), P
LO
= 0dBm, f
IN
= 900MHz, unless
otherwise noted.
Test circuit shown in Figure 1.
Typical ac perForMance characTerisTics
Conversion Gain Distribution
35
30
DISTRIBUTION (%)
25
20
15
10
5
0
–1.5
–1
–0.5
GAIN (dB)
0
1.5
5576 G03
OIP3 Distribution
25
20
DISTRIBUTION (%)
T
C
= 105°C
T
C
= 25°C
T
C
= –40°C
DISTRIBUTION (%)
30
25
20
15
10
5
Noise Figure Distribution
T
C
= 105°C
T
C
= 25°C
T
C
= –40°C
T
C
= 105°C
T
C
= 25°C
T
C
= –40°C
15
10
5
0
18
20
22
24
26
OIP3 (dBm)
28
30
5576 G04
0
12.5
13.5
NF (dB)
14.5
15.5
5576 G05
5576fa
For more information
www.linear.com/LTC5576
5
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