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Linear Technology DC 1710A-D Quick Start Manual

Dual 2.3ghz to 4.5ghz high dynamic range downconverting mixer
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DESCRIPTION
Demonstration Circuit 1710A-D is a dual 2.3GHz to
4.5GHz high dynamic range downconverting mixer
®
featuring the LTC
5593. The LTC5593 is part of a
family of dual-channel high dynamic range, high
gain downconverting mixers covering the 600MHz
to 4.5GHz frequency range. The Demo Circuit
1710A-D and the LTC5593 are optimized for
2.3GHz to 4.5GHz RF applications. The LO fre-
quency must fall within the 2.1GHz to 4.2GHz
range for optimum performance. A typical appli-
cation is a LTE or WiMAX multichannel or diversity
receiver with a 2.3GHz to 2.7GHz RF input.
The LTC5593 is designed for 3.3V operation, how-
ever the IF amplifiers can be powered by 5V for the
highest P1dB. A low current mode is provided for
power savings, and each of the mixer channels
has independent shutdown control.
DEMO CIRCUIT 1710A-D

QUICK START GUIDE

Dual 2.3GHz to 4.5GHz
HIGH DYNAMIC RANGE
DOWNCONVERTING MIXER
The LTC5593's high conversion gain and high dy-
namic range enable the use of lossy IF filters in
high-selective receiver designs, while minimizing
the total solution cost, board space and system-
level variation.
High Dynamic Range Dual Downconverting Mixer Family
DEMO #
IC PART #
DC1710A-A
LTC5590
DC1710A-B
LTC5591
DC1710A-C
LTC5592
DC1710A-D
LTC5593
Design files for this circuit board are available. Call
the LTC factory.
, LT, LTC, LTM, Linear Technology and the Linear Logo are registered trade-
marks of Linear Technology Corporation. All other trademarks are the property of
their respective owners.
LTC5593
RF RANGE
LO RANGE
600MHz-1.7GHz
700MHz-1.5GHz
1.3GHz-2.3GHz
1.4GHz-2.1GHz
1.6GHz-2.7GHz
1.7GHz-2.5GHz
2.3GHz-4.5GHz
2.1GHz-4.2GHz
1

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Summary of Contents for Linear Technology DC 1710A-D

  • Page 1: Quick Start Guide

    IF amplifiers can be powered by 5V for the highest P1dB. A low current mode is provided for , LT, LTC, LTM, Linear Technology and the Linear Logo are registered trade- marks of Linear Technology Corporation. All other trademarks are the property of power savings, and each of the mixer channels their respective owners.
  • Page 2 LTC55933 able pins must be pulled high or low. If left floating, the on/off state of the IC will be indeterminate. A APPLICATIONS NOTE logic table for the Enable control (ENA, ENB) is For detailed applications information, please refer shown in Table 1. to the LTC5593 datasheet.
  • Page 3 LTC55933 ter than 12dB return loss. For LO frequency from Demonstration Circuit 1710A-D can be easily re- 3.4GHz to 3.8GHz, the LO port can be well configured for other IF frequencies by simply re- matched by using C2 = 0.6pF and L4 = 10nH. placing inductors L1A, L2A, L1B and L2B.
  • Page 4 LTC55933 MEASUREMENT EQUIPMENT driven. Generally, spectrum analyzers are de- signed to operate at their best with about AND SETUP -30dBm at their input filter or preselector. Suffi- cient spectrum analyzer input attenuation The LTC5593 is a dual high dynamic range down- should be used to avoid saturating the instru- converting mixer IC with very high input 3rd order ment, but too much attenuation reduces sensi-...

  • Page 5: Quick Start Procedure

    LTC55933 QUICK START PROCEDURE RF PERFORMANCE MEASUREMENTS 1. Connect all test equipment as shown in Figure 6 with the signal generators and the DC power Demonstration circuit 1710A-D is easy to set up to supply turned off. evaluate the performance of the LTC5593. Refer to Figure 1, Figure 2, and Figure 3 for proper equip- 2.
  • Page 6 LTC55933 NOISE FIGURE MEASUREMENT 6. Calculate Input 3rd Order Intercept: 1. Configure and calibrate the noise figure meter IIP3 = (∆ )/2 + P for mixer measurements. Where ∆ is the lowest IF 2. Connect all test equipment as shown in Figure output signal power at either f or f 7 with the signal generator and the DC power...
  • Page 7 LTC55933 Figure 2. Proper Equipment Setup for RF Performance Measurements Figure 3. Proper Equipment Setup for Noise Figure Measurement...
  • Page 8 LTC55933 Figure 4. Demonstration Circuit schematic...
  • Page 9 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Analog Devices Inc. DC1710A-D...