LT5575EUF#PBF Linear Technology, LT5575EUF#PBF Datasheet
LT5575EUF#PBF
Specifications of LT5575EUF#PBF
Available stocks
Related parts for LT5575EUF#PBF
LT5575EUF#PBF Summary of contents
Page 1
... Q channels. These outputs can interface directly to channel-select fi lters (LPFs baseband amplifi ers. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. *Operation over a wider frequency range is possible with reduced performance. Consult the factory ...
Page 2
... LT5575. ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT5575EUF#PBF LT5575EUF#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on nonstandard lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi ...
Page 3
AC ELECTRICAL CHARACTERISTICS PARAMETER RF Input Frequency Range LO Input Frequency Range Baseband Frequency Range Baseband I/Q Output Impedance RF Input Return Loss LO Input Return Loss LO Input Power AC ELECTRICAL CHARACTERISTICS 2-tone IIP2 and IIP3 tests), Baseband Frequency ...
Page 4
LT5575 AC ELECTRICAL CHARACTERISTICS 2-tone IIP2 and IIP3 tests), Baseband Frequency = 1MHz (0.9MHz and 1.1MHz for 2-tone tests), P (Notes PARAMETER Isolation Note 1: Stresses beyond those listed under Absolute Maximum Ratings may ...
Page 5
TYPICAL AC PERFORMANCE CHARACTERISTICS (–10dBm/tone for 2-tone IIP2 and IIP3 tests), f Test Circuit Shown in Figure 1 (Note 6). Conversion Gain, NF and IIP3 vs Frequency 35 –40°C 25°C 30 85°C IIP3 25 LOW MID BAND BAND 20 HIGH ...
Page 6
LT5575 TYPICAL AC PERFORMANCE CHARACTERISTICS (–10dBm/tone for 2-tone IIP2 and IIP3 tests), f Test Circuit Shown in Figure 1 (Note 6). Conversion Gain, IIP3 Input Power at 900MHz 901MHz LO IIP3 30 25 –40°C ...
Page 7
TYPICAL AC PERFORMANCE CHARACTERISTICS (–10dBm/tone for 2-tone IIP2 and IIP3 tests), f Test Circuit Shown in Figure 1 (Notes 6, 7). I/Q Gain Mismatch vs LO Input Power 0 1MHz BB 0.2 0.1 2500MHz 1900MHz 0.0 900MHz –0.1 ...
Page 8
LT5575 TYPICAL AC PERFORMANCE CHARACTERISTICS (–10dBm/tone for 2-tone IIP2 and IIP3 tests), f Test Circuit Shown in Figure 1 (Note 6). Conversion Gain Distribution at 1900MHz 25° ...
Page 9
PIN FUNCTIONS GND (Pins 11): Ground pin. RF (Pin 2): RF Input Pin. This is a single-ended 50Ω ter- minated input. No external matching network is required for the high frequency band. An external series capacitor ...
Page 10
LT5575 TEST CIRCUIT J1 RF 0.018" = 4.4 r 0.062" 0.018" SIZE REF DES VALUE C5, C7 1000pF 0402 C8 0.1µF 0402 C9 2.2µF 3216 R1 100kΩ 0402 Figure 2. Top Side of Evaluation Board 10 J3 – I OUT ...
Page 11
APPLICATIONS INFORMATION The LT5575 is a direct I/Q demodulator targeting high linearity receiver applications, such as RFID readers and wireless infrastructure. It consists of RF transconductance amplifi ers, I/Q mixers, a quadrature LO phase shifter, and bias circuitry. The RF ...
Page 12
LT5575 APPLICATIONS INFORMATION The RF input impedance and S11 parameters (without external matching components) are listed in Table 1. Table 1. RF Input Impedance FREQUENCY INPUT Ω (GHz) IMPEDANCE ( ) 0.8 8.1 +j 21.3 0.9 10.5 +j 24.9 1.0 ...
Page 13
APPLICATIONS INFORMATION The LO input impedance and S11 parameters (without external matching components) are listed in Table 2. Table 2. LO Input Impedance FREQUENCY INPUT Ω (GHz) IMPEDANCE ( ) 0.8 9.6 +j 23.7 0 27.1 1.0 17.9 ...
Page 14
LT5575 APPLICATIONS INFORMATION Care should be taken when the demodulator’s outputs are DC-coupled to the external load to make sure that the I/Q mixers are biased properly. If the current drain from the outputs exceeds 6mA, there can be signifi ...
Page 15
... ON THE TOP AND BOTTOM OF PACKAGE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. UF Package 16-Lead Plastic QFN (4mm × ...
Page 16
... Response 25ns Response Time, Comparator Reference Input, Latch Enable Input, –26dBm to +12dBm Input Range Low Frequency to 1GHz, 83dB Log Linear Dynamic Range www.linear.com ● = 28mA CC = 28mA 78mA, CC Baseband DC Baseband DC Baseband DC Baseband DC 5575f LT 0107 • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2007 ...