Linear Technology LTC5551 Manual

DESCRIPTION
Demonstration circuit 2035A features
is a 300MHz to 3.5GHz ultra high dynamic range down
converting mixer. Demo circuit 2035A is optimized for RF
input frequency range 1.1GHz to 2.7GHz. IF output port
is optimized for frequency range 116MHz to 250MHz. RF
input can be matched with few external component for a
wide range of frequencies. IF output port can be matched
externally up to 500MHz. A typical application with low
side LO injection provides the best performance for RF
input frequency range 1.1GHz to 2.7GHz.
PERFORMANCE SUMMARY
0dBm, P = 0dBm (∆f = 2MHz, 0dBm/tone for two-tone IIP3 tests), unless otherwise noted. Test circuit shown in Schematic Diagram.
RF
PARAMETER
VCC Supply Voltage
VCC Supply Current
Shutdown Current
EN Voltage
EN Input Current
RF Input Frequency Range
RF Input Return Loss
IF Output Frequency Range
IF Output Return Loss
LO Frequency Range
LO Input Return Loss
LO Input Power
LO to RF leakage
LO to IF leakage
RF to LO Isolation
RF to IF Isolation
1.1GHz to 2.7GHz Downmixer Application: IF = 153MHz, ISEL = Low, Unless Otherwise Noted.
Power Conversion Gain
Arrow.com.
Downloaded from
DEMO MANUAL DC2035A
300MHz to 3.5GHz Ultra-High Dynamic
Range Downconverting Mixer
LTC 5551, which LTC5551 is optimized for 3.3V operation. A low power
®
mode is available and is activated by pulling the ISEL pin
high. This reduces the power consumption by 1/3, however
reduces the IIP3 to approximately 29dBm.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2035A
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.
Specifications are at V
CONDITION
EN = High, with LO Signal Applied
EN = High, ISIL = HIGH, with LO Signal Applied
EN = Low
Low, Chip Disabled
HIGH, Chip Enabled
V = 0V to 3.3V
EN
LO Signal Applied, with External Match
LO Signal Applied
LO Signal Applied, with External Match
LO Signal Applied
With External Match
With External Match
LO = 1000MHz to 3500MHz,with External LO Match
LO = 1000MHz to 3500MHz, with External LO Match
LO = 1000MHz to 3500MHz,with External LO Match
RF = 1.1GHz to 2.7GHz, with External Match
RF = 1.1GHz to 2.7GHz, with External Match
RF = 1100MHz, Low Side LO
RF = 1500MHz, Low Side LO
RF = 1950MHz, Low Side LO
RF = 2700MHz, Low Side LO
= 3.3V, EN = 3.3V, T = 25°C, ISEL = LOW, P
CC C
LTC5551
=
LO
TYP UNITS
2.5 to 3.6 V
204 mA
142 mA
<100 µA
<0.3 V
>1.2 V
–30 to 100 µA
1.1 to 2.7 GHz
>10 dB
116 to 250 MHz
>10 dB
1.0 to 3.5 GHz
>10 dB
–6 to 6 dBm
≤25 dBm
≤21 dBm
>55 dB
>23 dB
2.5 dB
2.5 dB
2.4 dB
1.7 dB
dc2035af
1