lt5519 Linear Technology Corporation, lt5519 Datasheet
lt5519
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lt5519 Summary of contents
Page 1
... The IF port can be easily matched to a broad range of frequencies for use in many different applications. The LT5519 mixer delivers +17.1dBm typical input 3rd order intercept point at 1GHz with IF input signal levels of –10dBm. The input 1dB compression point is typically +5.5dBm. The IC requires only a single 5V supply. ...
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... C, IF input = 140MHz at –10dBm, LO input = 1.14GHz at –5dBm, RF output measured A CONDITIONS with External Matching –10dBm/Tone 1MHz –10dBm, Single Tone Internally Biased Single-Side Band U W ORDER PART NUMBER GND 12 LT5519EUF + – GND 9 UF PART MARKING 5519 = 37 C/W JA MIN TYP MAX 1 to 400 ...
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... Note 4: Turn-On and Turn-Off times are based on the rise and fall times of the RF output envelope from –40dBm to full power with an IF input power of –10dBm. 1.2 1.0 0.8 0.6 0.4 0.2 5 5.25 5.5 5519 G01 LT5519 MIN TYP 4 (Test Circuit Shown in Figure 2) Shutdown Current vs Supply Voltage T ...
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... LT5519 W U TYPICAL PERFOR A CE CHARACTERISTICS High input = 140MHz at –10dBm, LO input = 1.14GHz at –5dBm, RF output measured at 1000MHz unless otherwise noted. For 2-tone inputs: 2nd IF input = 141MHz at –10dBm. (Test Circuit Shown in Figure 2.) Conversion Gain and SSB Noise Figure vs RF Output Frequency ...
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... puts. The LT5519 works well with a single-ended source driving the LO impedance ground. No external 50 nents are required. An internal resistor is connected and have appropri- across these pins; therefore voltage should not be CC applied across the inputs ...
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... AVX 04023A330KAT2A 1000pF 0402 AVX 04023A102KAT2A 1 F 0603 Taiyo Yuden LMK107BJ105MA 39nH 0402 Toko LL1005-FH39NJ 100 , 0.1% 0603 IRC PFC-W0603R-03-10R1-B 4:1 SM-22 M/A-COM ETC4-1-2 Figure 2. Test Schematic for the LT5519 GND CC3 10pF 6 V CC1 BIAS 5519 BD GND 14 13 ...
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... U U APPLICATIO S I FOR ATIO The LT5519 consists of a double-balanced mixer, a high performance LO buffer and bias/enable circuits. The RF and LO ports may be driven differentially; however, they are intended to be used in single-ended mode by connect- ing one input of each pair to ground. The IF input ports must be DC-isolated from the source and driven differen- tially ...
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... Operation at Different Input Frequencies On the evaluation board shown in Figure 10, the input of the LT5519 can be easily matched for different frequencies by changing the capacitors, C1, C2 and C3. Capacitors C1 and C2 set the input matching frequency while C3 im- proves the leakage performance. Decreasing the value higher input frequencies reduces its impact on conversion gain ...
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... Low Frequency Matching of the RF Output Port 33 33 Without any external components on the RF output, the 33 internal transformer of the LT5519 provides a good 50 15 impedance match for RF frequencies above approximately 6.8 850MHz. Below this frequency, the return loss drops 6.8 below 10dB and degrades the conversion gain. The addi- 6 ...
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... LT5519 U TYPICAL APPLICATIO S 10 (10a) Top Layer Silkscreen (10b) Top Layer Metal Figure 10. Evaluation Board Layout 5519f ...
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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 LT5519 BOTTOM VIEW—EXPOSED PAD R = 0.115 0.55 0.20 TYP (UF) QFN 0503 0.30 0.05 0.65 BSC 5519f 11 ...
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... LT5519 RELATED PARTS PART NUMBER DESCRIPTION Infrastructure LT5511 High Signal Level Upconverting Mixer LT5512 DC-3GHz High Signal Level Downconverting Mixer LT5515 1.5GHz to 2.5GHz Direct Conversion Quadrature Demodulator LT5516 0.8GHz to 1.5GHz Direct Conversion Quadrature Demodulator LT5517 40MHz to 900MHz Direct Conversion Quadrature Demodulator LT5520 1 ...