LT5521 datasheet(5/16 Pages) LINER

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LT5521

5521f

LO-RF Leakage vs LO Frequency

Conversion Gain, IIP3 and Noise

Figure vs Supply Voltage

Conversion Gain and IIP3

vs LO Power

LO-RF Leakage vs LO Power

LO-RF Leakage vs Supply Voltage

Noise Figure vs LO Power

TYPICAL AC PERFOR A CE CHARACTERISTICS f

LO = 1700MHz, fIF = 250MHz, fRF = 1950MHz,

PLO = –5dBm, VCC = 5V, EN = 2.9V, TA = 25°C, unless otherwise noted. Test circuit shown in Figure 1 is tuned for 1.95GHz output

frequency and VCC = 5V.

LO FREQUENCY (MHz)

1500

–48

–46

–44

–42

–40

1600

1700

°C

1800

1900

5521 G06

–38

–36

1550

1650

1750

1850

–40

°C

VCC (V)

4.6

–2

4.8

5.0

5.2

5.4

5521 G07

IIP3

4.7

4.9

5.1

5.3

°C

–40

°C

LO POWER (dBm)

–25

–10

5521 G08

–20

–15

–5

IIP3

510

–2

–4

°C

–40

°C

LO POWER (dBm)

–25

–50

–48

–44

–42

–40

–5

–32

5521 G09

–46

–15

–20

–10

–38

–36

–34

°C

–40

°C

VCC (V)

4.7

–44

–42

–40

°C

–40

5.0

5.2

5521 G10

–46

–48

–50

4.8

4.9

5.1

–38

–36

–34

5.3

°C

LO POWER (dBm)

–20

5521 G11

–15

–10

–5

°C

–40

°C

Low Side LO (LS) and High Side

LO (HS) Comparison: Conversion

Gain and IIP3 vs RF Frequency

RFOUT (MHz)

1750

2050

5521 G13

1850

1950

2150

–2

–4

IIP3

LS: R1 = R7 = 110

Ω

HS: R1 = R7 = 121

Ω

fIF = 250MHz

Low Side LO (LS) and High Side

LO (HS) Comparison: Noise Figure

vs RF Frequency

RFOUT (MHz)

1700

11.5

11.7

12.1

12.3

12.5

13.5

12.9

1800

1900 1950

5521 G14

11.9

13.1

13.3

12.7

1750

1850

2000 2050 2100

LS: R1 = R7 = 110

Ω

HS: R1 = R7 = 121

Ω

fIF = 250MHz

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