lt5525 Linear Technology Corporation, lt5525 Datasheet
lt5525
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lt5525 Summary of contents
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... 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. , LTC and LT are registered trademarks of Linear Technology Corporation. ...
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... CONDITIONS Requires RF Matching Below 1300MHz Requires IF Matching CONDITIONS Z = 50Ω 50Ω, External DC Blocks 50Ω, External Match INFORMATION ORDER PART TOP VIEW NUMBER LT5525EUF 12 GND + – GND PART MARKING UF PACKAGE 5525 = 125°C, θ ...
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... 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. LT5525 = 25° –15dBm (–15dBm/tone for 2-tone A RF ...
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... LT5525 W U TYPICAL AC PERFOR A CE CHARACTERISTICS P = –15dBm (–15dBm/tone for 2-tone IIP3 tests, ∆f = 1MHz unless otherwise noted. Test circuit shown in Figure 1. Conversion Gain and IIP3 vs RF Frequency (Low Side LO IIP3 15 10 25°C 5 85°C –40°C GAIN 0 –5 900 ...
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... 1760MHz 140MHz IF 2RF-2LO f = 1830MHz RF 3RF-3LO f = 1806.67MHz RF –16 –12 –8 – INPUT POWER (dBm) 5525 G11 Test circuit shown in Figure 1. Shutdown Current vs Supply Voltage 20 25°C 85°C –40° 2.8 3.2 3.6 4 4.4 4.8 5.2 5.6 SUPPLY VOLTAGE (V) 5525 G13 LT5525 = 1900MHz, 5525f 5 ...
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... LT5525 CTIO S NC (Pins 13, 16): Not Connected Internally. These pins should be grounded on the circuit board for improved LO-to-RF and LO-to-IF isolation. + – (Pins 2, 3): Differential Inputs for the RF Signal. One RF input pin may be DC connected to a low impedance ground to realize a 50Ω single-ended input at the other RF pin ...
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... L2 APPLICATIO S I FOR ATIO The LT5525 consists of a double-balanced mixer, RF balun, RF buffer amplifier, high speed limiting LO buffer and bias/enable circuits. The IC has been optimized for downconverter applications with RF input signals from 0.8GHz to 2.5GHz and LO signals from 500MHz to 3GHz. With proper matching, the IF output can be operated at frequencies from 0 ...
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... Figure 3. RF Input Return Loss Without and with External Matching Components Figure 4 illustrates the typical conversion gain, IIP3 and NF performance of the LT5525 when the RF input match is shifted lower in frequency using an external series 3.9pF capacitor on the RF input. RF input impedance and reflection coefficient (S11) ver- sus frequency are shown in Table 1. The listed data is – ...
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... IF , are internally con- LT5525 575Ω 0.7pF L2 – 5525 F09 Figure 9. IF Output with External Matching ANGLE – ...
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... W U LT5525 element network. This circuit is shown in Figure 11, where L11, L12, C11 and C12 form a narrowband bridge balun. These element values are selected to realize a 180° phase shift at the desired IF frequency, and can be estimated using the equations below ...
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... RF FREQUENCY (MHz) 5525 F13 Figure 14. Typical IIP3 vs RF Frequency with Lumped Element Baluns and IF Frequencies of 240MHz, 360MHz and 450MHz Top Layer Metal LT5525 560 270 180 240MHz 360MHz 450MHz 2400 2600 5525 F14 5525f 11 ...
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... LT5525 PACKAGE DESCRIPTIO 4.35 ± 0.05 2.15 ± 0.05 (4 SIDES) 2.90 ± 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING CONFORMS TO JEDEC PACKAGE OUTLINE MO-220 VARIATION (WGGC) 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE ...