LT5527 LINER [Linear Technology], LT5527 Datasheet
LT5527
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LT5527 Summary of contents
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... The IF output is partially matched and usable for IF frequencies up to 600MHz. The LT5527’s high level of integration minimizes the total solution cost, board space and system-level variation. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. ...
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... ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT5527EUF#PBF LT5527EUF#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi ...
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... Note 3: Specifi cations over the –40°C to 85°C temperature range are assured by design, characterization and correlation with statistical process controls. Note 4: SSB Noise Figure measurements performed with a small-signal noise source and bandpass fi lter on RF input, and no other RF signal applied. LT5527 MIN TYP MAX UNITS >10 dB > ...
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... LT5527 TYPICAL AC PERFORMANCE CHARACTERISTICS High –5dBm (–5dBm/tone for 2-tone IIP3 tests, Δf = 1MHz otherwise noted. Test circuit shown in Figure 1. Conversion Gain, IIP3 and Frequency 24 IIP3 SSB 25° 240MHz 8 LOW SIDE LO 6 HIGH SIDE LO ...
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... –6 –4 – INPUT POWER (dBm) 5527 G19 LT5527 Midband (No external RF/LO matching) 2 × 2 and 3 × 3 Spurs vs LO Power (Single Tone) –50 –55 3RF-3LO (RF = 1740MHz) –60 –65 2RF-2LO –70 (RF = 1780MHz) –75 –80 – 25°C A – ...
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... LT5527 TYPICAL AC PERFORMANCE CHARACTERISTICS RF/LO matching 5V High 140MHz, unless otherwise noted. Test circuit shown in Figure 1. Conversion Gain, IIP3 and Frequency (900MHz Low Side Application) 25 IIP3 23 21 LOW SIDE 25° 140MHz SSB 750 ...
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... Exposed Pad (Pin 17): Circuit Ground Return for the Entire IC. This must be soldered to the printed circuit board ground plane REGULATOR EXPOSED LIMITING V CC1 AMPLIFIERS LINEAR AMPLIFIER RF DOUBLE-BALANCED MIXER BIAS CC2 CC1 LT5527 pin and decoupled CC2 17 PAD GND – GND 5527 BD CC 5527fa 7 ...
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... REF DES VALUE L4, C4 GND LT5527 50Ω – (mm) NC GND CC2 CC1 REF DES VALUE L4, C4, C5 L1, L2 100nH L3 ...
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... APPLICATIONS INFORMATION Introduction The LT5527 consists of a high linearity double-balanced mixer, RF buffer amplifi er, high speed limiting LO buffer amplifi er and bias/enable circuits. The RF and LO inputs are both single ended. The IF output is differential. Low side or high side LO injection can be used. Two evaluation circuits are available. The standard evalua- ...
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... LT5527 APPLICATIONS INFORMATION series transmission line/shunt capacitor matching topol- ogy allows the LT5527 to be used for multiple frequency standards without circuit board layout modifi cations. The series transmission line can also be replaced with a series chip inductor for a more compact layout. ...
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... Direct 8:1 transformer 87.9 • Lowpass matching + 4:1 transformer 53.2 146.7 • Discrete IF balun Figure 7. IF Output with External Matching Figure 8. IF Output Small-Signal Model LT5527 DIFFERENTIAL OUTPUT IMPEDANCE (RIF || XIF) 415||-j64k 415||-j6.4k 415||-j909 413||-j453 407||-j264 403||-j211 395||-j165 ...
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... LT5527 APPLICATIONS INFORMATION Direct 8:1 IF Transformer Matching For IF frequencies below 100MHz, the simplest IF matching technique is an 8:1 transformer connected across the IF pins. The transformer will perform impedance transfor- mation and provide a single-ended 50Ω output. No other matching is required. Measured performance using this technique is shown in Figure 9. This matching is easily ...
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... Frequency Using Discrete IF Balun Matching = 50Ω) OUT C6 (pF) (nH) 6.8 220 4.7 220 3 68 2.7 47 Figure 13. Conversion Gain, IIP3 and SSB Output Frequency Using Discrete IF Balun Matching LT5527 0 –5 –10 –15 190MHz –20 240MHz 380MHz –25 450MHz –30 50 100 150 200 250 300 ...
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... LT5527 APPLICATIONS INFORMATION matching inductors in a band-pass IF matching network. The values of L1, L2 and C3 are calculated to resonate at the desired IF frequency with a quality factor that satisfi es the required IF bandwidth. The L and C values are then adjusted to account for the mixer’s internal 2.5pF capaci- tance and the SAW fi ...
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... Plastic QFN (4mm × 4mm) (Reference LTC DWG # 05-08-1692) 0.72 ±0.05 PACKAGE OUTLINE 0.30 ±0.05 0.65 BSC BOTTOM VIEW—EXPOSED PAD 0.75 ± 0. 0.115 2.15 ± 0.10 (4-SIDES) 0.200 REF 0.00 – 0.05 LT5527 PIN 1 NOTCH R = 0.20 TYP OR 0.35 × 45° CHAMFER TYP 15 16 0.55 ± 0. (UF16) QFN 10-04 0.30 ± 0.05 0.65 BSC 5527fa ...
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... LT5527 RELATED PARTS PART NUMBER DESCRIPTION Infrastructure LT5511 High Linearity Upconverting Mixer LT5512 1kHz to 3GHz High Signal Level Active Mixer LT5514 Ultralow Distortion, IF Amplifi er/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 ...