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LT5526EUF#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
1
LT5526
5526f
High Linearity, Low Power
Downconverting Mixer
■
Operation up to 2GHz
■
Broadband RF, LO and IF Operation
■
High Input IP3: +16.5dBm at 900MHz
■
Typical Conversion Gain: 0.6dB at 900MHz
■
SSB Noise Figure: 11dB at 900MHz
■
On-Chip 50Ω LO Match
■
Integrated LO Buffer: –5dBm Drive Level
■
High LO-RF and LO-IF Isolation
■
Low Supply Current: 28mA Typ
■
Enable Function
■
Single 5V Supply
■
16-Lead QFN (4mm × 4mm) Package
■
Point-to-Point Data Communication Systems
■
Wireless Infrastructure
■
Cable Downlink Infrastructure
■
High Linearity Receiver Applications
High Signal Level Frequency Downconversion
DESCRIPTIO
U
FEATURES
APPLICATIO S
U
TYPICAL APPLICATIO
U
The LT
®
5526 is a low power broadband mixer optimized
for high linearity applications such as point-to-point data
transmission, cable infrastructure and wireless infrastruc-
ture systems. The device includes an internally matched
high speed LO amplifier driving a double-balanced active
mixer core. An integrated RF buffer amplifier provides
excellent LO-RF isolation. The RF and IF ports can be easily
matched across a broad range of frequencies for use in a
wide variety of applications.
The LT5526 offers a high performance alternative to
passive mixers. Unlike passive mixers which have conver-
sion loss and require high LO drive levels, the LT5526
delivers conversion gain at significantly lower LO input
levels and is much less sensitive to LO power level
variations.
, LTC and LT are registered trademarks of Linear Technology Corporation.
RF
+
RF
–
IF
+
IF
–
LO
–
5526 TA01
LO
+
BIAS
EN
V
CC2
LO INPUT
–5dBm
V
CC1
V
CC
5V DC
900MHz
GND
LT5526
140MHz900MHz
LNA VGA ADC
IF Output Power and IM3 vs
RF Input Power (Two Input Tones)
RF INPUT POWER (dBm/TONE)
–20
–100
OUTPUT POWER (dBm/TONE)
–90
–70
–60
–50
0
–30
–15
–10
5526 TA02
–80
–20
P
OUT
IM3
–10
–40
–5
0
T
A
= 25°C
f
IF
= 140MHz
f
RF
= 900MHz
f
LO
= 760MHz
P
LO
= –5dBm
2
LT5526
5526f
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
RF Input Power ................................................ +10dBm
RF
+
to RF
–
Differential DC Voltage ....................... ±0.7V
Operating Temperature Range ................ – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 125°C
Junction Temperature (T
J
)................................... 125°C
LT5526EUF
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
5526
DC ELECTRICAL CHARACTERISTICS
AC ELECTRICAL CHARACTERISTICS
(Notes 2, 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
RF Input Frequency Range (Note 4) Requires RF Matching 0.1 to 2000 MHz
LO Input Frequency Range (Note 4) Requires DC Blocks 0.1 to 2500 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 circuits shown in Figures 1 and 2. (Notes 2, 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
RF Input Return Loss Z
O
= 50Ω, External Match 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 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 0.01 µA
Turn-On Time (Note 5) 3 µs
Turn-Off Time (Note 5) 6 µs
3
LT5526
5526f
AC ELECTRICAL CHARACTERISTICS
V
CC
= 5V, EN = 3V, T
A
= 25°C, P
RF
= –15dBm (–15dBm/tone for 2-tone
IIP3 tests, ∆f = 1MHz), P
LO
= –5dBm, unless otherwise noted. Test circuits shown in Figures 1 and 2. (Notes 2, 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
RF to LO Isolation f
RF
= 350MHz, f
IF
= 70MHz, f
LO
= 420MHz 69 dB
f
RF
= 900MHz, f
IF
= 140MHz, f
LO
= 760MHz 55 dB
f
RF
= 1900MHz, f
IF
= 140MHz, f
LO
= 1760MHz 50 dB
Conversion Gain f
RF
= 350MHz, f
IF
= 70MHz, f
LO
= 420MHz 0.6 dB
f
RF
= 900MHz, f
IF
= 140MHz, f
LO
= 760MHz 0.6 dB
f
RF
= 1900MHz, f
IF
= 140MHz, f
LO
= 1760MHz 0.4 dB
Conversion Gain vs Temperature T
A
= –40°C to 85°C –0.013 dB/°C
Input 3rd Order Intercept f
RF
= 350MHz, f
IF
= 70MHz, f
LO
= 420MHz 15.2 dBm
f
RF
= 900MHz, f
IF
= 140MHz, f
LO
= 760MHz 16.5 dBm
f
RF
= 1900MHz, f
IF
= 140MHz, f
LO
= 1760MHz 14.1 dBm
Single Sideband Noise Figure f
RF
= 350MHz, f
IF
= 70MHz, f
LO
= 420MHz 12.7 dB
f
RF
= 900MHz, f
IF
= 140MHz, f
LO
= 760MHz 11.0 dB
f
RF
= 1900MHz, f
IF
= 140MHz, f
LO
= 1760MHz 13.7 dB
LO to RF Leakage f
RF
= 350MHz, f
IF
= 70MHz, f
LO
= 420MHz –65 dBm
f
RF
= 900MHz, f
IF
= 140MHz, f
LO
= 760MHz –65 dBm
f
RF
= 1900MHz, f
IF
= 140MHz, f
LO
= 1760MHz –55 dBm
LO to IF Leakage f
RF
= 350MHz, f
IF
= 70MHz, f
LO
= 420MHz –56 dBm
f
RF
= 900MHz, f
IF
= 140MHz, f
LO
= 760MHz –74 dBm
f
RF
= 1900MHz, f
IF
= 140MHz, f
LO
= 1760MHz –37 dBm
2RF-2LO Output Spurious Product 350MHz: f
RF
= 385MHz at –15dBm, f
LO
= 420MHz –75 dBc
(f
RF
= f
LO
± f
IF
/2) 900MHZ: f
RF
= 830MHz at –15dBm, f
LO
= 760MHz –72 dBc
1900MHz: f
RF
= 1830MHz at –15dBm, f
LO
= 1760MHz –48 dBc
3RF-3LO Output Spurious Product 350MHz: f
RF
= 396.67MHz at –15dBm, f
LO
= 420MHz –65 dBc
(f
RF
= f
LO
± f
IF
/3) 900MHZ: f
RF
= 806.67MHz at –15dBm, f
LO
= 760MHz –68 dBc
1900MHz: f
RF
= 1806.67MHz at –15dBm, f
LO
= 1760MHz –56 dBc
Input 1dB Compression f
RF
= 350MHz, f
IF
= 70MHz, f
LO
= 420MHz 5 dBm
f
RF
= 900MHz, f
IF
= 140MHz, f
LO
= 760MHz 5 dBm
f
RF
= 1900MHz, f
IF
= 140MHz, f
LO
= 1760MHz 1 dBm
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The 900MHz and 1900MHz performance is measured with the test
circuit shown in Figure 1. The 350MHz performance is measured using the
test circuit in Figure 2.
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 by 40dB.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LT5526EUF#PBF

Mfr. #:
Buy LT5526EUF#PBF
Manufacturer:
Analog Devices Inc.
Description:
RF Mixer 2GHz Low Power Downconverting Mixer
Lifecycle:
New from this manufacturer.
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