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LT5525EUF#PBF

P1-P3P4-P6P7-P9P10-P12
1
LT5525
5525f
High Linearity, Low Power
Downconverting Mixer
■
Wide Input Frequency Range: 0.8GHz to 2.5GHz*
■
Broadband LO and IF Operation
■
High Input IP3: +17.6dBm at 1900MHz
■
Typical Conversion Gain: –1.9dB at 1900MHz
■
High LO-RF and LO-IF Isolation
■
SSB Noise Figure: 15.1dB at 1900MHz
■
Single-Ended 50Ω RF and LO Interface
■
Integrated LO Buffer: –5dBm Drive Level
■
Low Supply Current: 28mA Typ
■
Enable Function
■
Single 5V Supply
■
16-Lead QFN (4mm × 4mm) Package
■
Point-to-Point Data Communication Systems
■
Wireless Infrastructure
■
High Performance Radios
■
High Linearity Receiver Applications
High Signal Level Frequency Downconversion
DESCRIPTIO
U
FEATURES
APPLICATIO S
U
TYPICAL APPLICATIO
U
The LT
®
5525 is a low power broadband mixer optimized
for high linearity applications such as point-to-point data
transmission, high performance radios and wireless infra-
structure systems. The device includes an internally 50Ω
matched high speed LO amplifier driving a double-bal-
anced active mixer core. An integrated RF buffer amplifier
provides excellent LO-RF isolation. The RF input balun and
all associated 50Ω matching components are integrated.
The IF ports can be easily matched across a broad range
of frequencies for use in a wide variety of applications.
The LT5525 offers a high performance alternative to
passive mixers. Unlike passive mixers, which require high
LO drive levels, the LT5525 operates at significantly lower
LO input levels and is much less sensitive to LO power
level variations.
IF Output Power and IM3 vs
RF Input Power (Two Input Tones)
RF
+
RF
–
IF
+
IF
–
LO
–
5525 TA01
LO
+
BIAS
EN
V
CC2
LO INPUT
–5dBm
V
CC1
V
CC
5V DC
0.01µF
1.2pF
100pF
150nH
4:1
150nH
1900MHz
GND
LT5525
140MHz1900MHz
LNA VGA ADC
RF INPUT POWER (dBm/TONE)
–20
–100
OUTPUT POWER (dBm/TONE)
–90
–70
–60
–50
0
–30
–15
–10
5525 TA02
–80
–20
P
OUT
IM3
–10
–40
–5
0
T
A
= 25°C
f
RF
= 1900MHz
f
LO
= 1760MHz
f
IF
= 140MHz
P
LO
= –5dBm
, LTC and LT are registered trademarks of Linear Technology Corporation.
*Operation over a wider frequency range is achievable with reduced performance.
Consult factory for more information.
2
LT5525
5525f
ORDER PART
NUMBER
(Note 1)
Supply Voltage ...................................................... 5.5V
Enable Voltage ............................... –0.3V to V
CC
+ 0.3V
LO Input Power ............................................... +10dBm
LO
+
to LO
–
Differential DC Voltage ......................... ±1V
LO
+
and LO
–
Common Mode DC Voltage... –0.5V to V
CC
RF Input Power ................................................ +10dBm
RF
+
to RF
–
Differential DC Voltage ..................... ±0.13V
RF
+
and RF
–
Common Mode DC Voltage ... –0.5V to V
CC
IF
+
and IF
–
Common Mode DC Voltage................... 5.5V
Operating Temperature Range ................ – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 125°C
Junction Temperature (T
J
)................................... 125°C
LT5525EUF
T
JMAX
= 125°C, θ
JA
= 37°C/W
EXPOSED PAD (PIN 17) IS GND,
MUST BE SOLDERED TO PCB.
NC PINS SHOULD BE GROUNDED
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
V
CC
= 5V, EN = 3V, T
A
= 25°C (Note 3), unless otherwise noted. Test circuit shown in Figure 1.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
16 15 14 13
5 6 7 8
TOP VIEW
17
UF PACKAGE
16-LEAD (4mm × 4mm) PLASTIC QFN
9
10
11
12
4
3
2
1NC
RF
+
RF
–
NC
GND
IF
+
IF
–
GND
NC
LO
+
LO
–
NC
EN
V
CC1
V
CC2
NC
UF PART
MARKING
5525
DC ELECTRICAL CHARACTERISTICS
AC ELECTRICAL CHARACTERISTICS
(Notes 2, 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
RF Input Frequency Range (Note 4) Requires RF Matching Below 1300MHz 800 to 2500 MHz
LO Input Frequency Range (Note 4) 500 to 3000 MHz
IF Output Frequency Range (Note 4) Requires IF Matching 0.1 to 1000 MHz
V
CC
= 5V, EN = 3V, T
A
= 25°C. Test circuit shown in Figure 1. (Notes 2, 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
RF Input Return Loss Z
O
= 50Ω 15 dB
LO Input Return Loss Z
O
= 50Ω, External DC Blocks 15 dB
IF Output Return Loss Z
O
= 50Ω, External Match 15 dB
LO Input Power –10 to 0 dBm
PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Supply Requirements (V
CC
)
Supply Voltage (Note 6) 3.6 5 5.3 V
Supply Current V
CC
= 5V 28 33 mA
Shutdown Current EN = Low 100 µA
Enable (EN) Low = Off, High = On
EN Input High Voltage (On) 3V
EN Input Low Voltage (Off) 0.3 V
Enable Pin Input Current EN = 5V 55 µA
EN = 0V 0.1 µA
Turn-On Time (Note 5) 3 µs
Turn-Off Time (Note 5) 6 µs
3
LT5525
5525f
AC ELECTRICAL CHARACTERISTICS
V
CC
= 5V, EN = 3V, T
A
= 25°C, P
RF
= –15dBm (–15dBm/tone for 2-tone
IIP3 tests, ∆f = 1MHz), f
LO
= f
RF
– 140MHz, P
LO
= –5dBm, IF output measured at 140MHz, unless otherwise noted. Test circuit shown
in Figure 1. (Notes 2, 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Conversion Gain f
RF
= 900MHz –2.6 dB
f
RF
= 1900MHz –1.9 dB
f
RF
= 2100MHz –2.0 dB
f
RF
= 2500MHz –2.0 dB
Conversion Gain vs Temperature T
A
= –40°C to 85°C –0.020 dB/°C
Input 3rd Order Intercept f
RF
= 900MHz 21.0 dBm
f
RF
= 1900MHz 17.6 dBm
f
RF
= 2100MHz 17.6 dBm
f
RF
= 2500MHz 12.0 dBm
Single Sideband Noise Figure f
RF
= 900MHz 14.0 dB
f
RF
= 1900MHz 15.1 dB
f
RF
= 2100MHz 15.6 dB
f
RF
= 2500MHz 15.6 dB
LO to RF Leakage f
LO
= 500MHz to 1000MHz ≤–50 dBm
f
LO
= 1000MHz to 3000MHz ≤–43 dBm
LO to IF Leakage f
LO
= 500MHz to 1400MHz ≤–50 dBm
f
LO
= 1400MHz to 3000MHz ≤–39 dBm
RF to LO Isolation f
RF
= 500MHz to 3000MHz >38 dB
RF to IF Isolation f
RF
= 900MHz 62 dB
f
RF
= 1900MHz 42 dB
f
RF
= 2100MHz 40 dB
f
RF
= 2500MHz 33 dB
Input 1dB Compression f
RF
= 900MHz 7.6 dBm
f
RF
= 1900MHz 4 dBm
f
RF
= 2100MHz 4 dBm
f
RF
= 2500MHz 3 dBm
2RF-2LO Output Spurious Product 900MHz: f
RF
= 830MHz at –15dBm –63 dBc
(f
RF
= f
LO
+ f
IF
/2) 1900MHz: f
RF
= 1830MHz at –15dBm –53 dBc
2100MHz: f
RF
= 2030MHz at –15dBm –45 dBc
2500MHz: f
RF
= 2430Hz at –15dBm –42 dBc
3RF-3LO Output Spurious Product 900MHz: f
RF
= 806.67MHz at –15dBm –74 dBc
(f
RF
= f
LO
+ f
IF
/3) 1900MHz: f
RF
= 1806.67MHz at –15dBm –59 dBc
2100MHz: f
RF
= 2006.67MHz at –15dBm –59 dBc
2500MHz: f
RF
= 2406.67Hz at –15dBm –60 dBc
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The performance is measured with the test circuit shown in
Figure 1. For 900MHz measurements, C1 = 3.9pF. For all other
measurements, C1 is not used.
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: Operation over a wider frequency range is possible with reduced
performance. Consult the factory for information and assistance.
Note 5: Turn-on and turn-off times correspond to a change in the output
level of 40dB.
Note 6: The part is operable below 3.6V with reduced performance.
P1-P3P4-P6P7-P9P10-P12

LT5525EUF#PBF

Mfr. #:
Buy LT5525EUF#PBF
Manufacturer:
Analog Devices Inc.
Description:
RF Mixer 2.5GHz Low Power Downconverting Mixer
Lifecycle:
New from this manufacturer.
Delivery:
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