LT5526 LINER [Linear Technology], LT5526 Datasheet
LT5526
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LT5526 Summary of contents
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... 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. ...
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... Requires RF Matching Requires DC Blocks Requires IF Matching CONDITIONS Z = 50Ω, External Match 50Ω, External DC Blocks 50Ω, External Match INFORMATION ORDER PART TOP VIEW NUMBER LT5526EUF 12 GND + – GND PART MARKING UF PACKAGE 5526 = 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 by 40dB. LT5526 = 25° –15dBm (–15dBm/tone for 2-tone A RF MIN TYP MAX ...
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... LT5526 W U TYPICAL AC PERFOR A CE CHARACTERISTICS T = 25° –15dB (–15dBm/tone for 2-tone IIP3 tests, ∆f = 1MHz 140MHz, unless otherwise noted. Test circuit shown in Figure 1. Conversion Gain, IIP3 and SSB Frequency (Low Side LO 25° 140MHz IF IIP3 16 14 ...
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... IF –40°C –20 –30 LO-IF –40 –50 LO-RF –60 –70 –80 –90 –100 0 2 900 1100 1300 1500 1700 1900 LO FREQUENCY (MHz) 5526 G16 LT5526 T = 25° 1760MHz 140MHz IF –5 0 5526 G14 2100 2300 2500 5526 G17 5526f 5 ...
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... LT5526 W U TYPICAL AC PERFOR A CE CHARACTERISTICS T = 25° –15dB (–15dBm/tone for 2-tone IIP3 tests, ∆f = 1MHz 70MHz, unless otherwise noted. Test circuit shown in Figure 2. Conversion Gain and IIP3 vs RF Frequency 70MHz IF 16 IIP3 25°C 85° ...
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... EXPOSED LO LO PAD HIGH SPEED LO BUFFER LINEAR AMPLIFIER + RF 2 – DOUBLE- BALANCED MIXER BIAS CC2 CC1 LT5526 + (Pins 10, 11): Differential Outputs for the IF (Pins 14, 15): Differential Inputs for the Local GND – GND 9 5526 BD CC 5526f 7 ...
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... T1 T2 TL1, TL2 420MHz – GND LT5526 10 IF – – GND CC1 CC2 REF DES L1 Figure 2. Test Schematic for 350MHz Applications RF 0.018" ...
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... U U APPLICATIO S I FOR ATIO The LT5526 consists of a double-balanced mixer, RF buffer amplifier, high speed limiting LO buffer and bias/enable circuits. The IC has been optimized for downconverter applications with RF input signals to 2GHz and LO signals to 2.5GHz. With proper matching, the IF output can be tuned for operation at frequencies from ...
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... ω • R ω the source resistance (50Ω) and the parasitics of the external RF 0 –5 –10 –15 –20 –25 100 300 500 700 900 1100 1300 FREQUENCY (MHz) 5526 F06 LT5526 R RF 5526 F05 is the RF 5526f ...
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... A simplified schematic of the IF output circuit is shown in Figure 9. The output pins, IF connected to the collectors of the mixer switching transis- tors. Both pins must be biased at the supply voltage, which 5526 F07 can be applied through the center-tap of a transformer or LT5526 0 –5 –10 –15 –20 –25 – ...
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... Figure 9. IF Output with External Matching An equivalent small-signal model for the output is shown in Figure 10. The output impedance can be modeled as a 575Ω resistor in parallel with a 0.7pF capacitor. For most applications, the bond-wire inductance (0.7nH per side) can be ignored. LT5526 0.7nH + ...
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... Figure 12. Typical Return Loss Performance with a 240MHz Narrowband Bridge IF Balun (Swept IF) C13 IF OUT 50Ω L13 OPT C14 5526 F11 Figure 13. Typical Gain and IIP3 Performance with a 240MHz Narrowband Bridge IF Balun (Swept IF) LT5526 0 –5 –10 –15 –20 –25 100 150 200 250 300 ...
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... LT5526 U TYPICAL APPLICATIO S Top Layer Silkscreen 14 Evaluation Board Layouts Top Layer Metal 5526f ...
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... U UF Package 16-Lead Plastic QFN (4mm × 4mm) (Reference LTC DWG # 05-08-1692) 0.72 ±0.05 PACKAGE OUTLINE 0.30 ±0.05 0.65 BSC 0.75 ± 0.05 4.00 ± 0.10 (4 SIDES) 2.15 ± 0.10 (4-SIDES) 0.200 REF 0.00 – 0.05 LT5526 BOTTOM VIEW—EXPOSED PAD R = 0.115 0.55 ± 0.20 TYP (UF) QFN 1103 0.30 ± 0.05 0.65 BSC 5526f 15 ...
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... LT5526 RELATED PARTS PART NUMBER DESCRIPTION Infrastructure LT5511 High Linearity Upconverting Mixer LT5512 DC-3GHz High Signal Level Downconverting Mixer LT5514 Ultralow Distortion, IF Amplifier/ADC Driver with Digitally Controlled Gain LT5515 1.5GHz to 2.5GHz Direct Conversion Quadrature Demodulator LT5516 0.8GHz to 1.5GHz Direct Conversion Quadrature Demodulator ...