AD8349 datasheet(13/28 Pages) AD

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AD8349

Rev. 0 | Page 13 of 28

–60

–45

–40

–35

–30

–25

CARRIER FEEDTHROUGH (dBm)

–55

–50

FLO = 1900MHz

Figure 37. Carrier Feedthrough Distribution at FLO = 1900 MHz (FBB = 1 MHz,

I and Q Inputs Driven in Quadrature at 1.2 Vp-p, TA = 25°C)

CARRIER FEEDTHROUGH (dBm)

–70

–65

–60

–55

–50

–45

–40

–35

–30

FLO = 2140 MHz

Figure 38. Carrier Feedthrough Distribution at FLO = 2140 MHz (FBB = 1 MHz,

I and Q Inputs Driven in Quadrature at 1.2 V p-p, TA = 25°C)

–80

–70

–60

–50

–40

–30

CARRIER FEEDTHROUGH (dBm)

FLO = 900MHz

Figure 39. Carrier Feedthrough Distribution at FLO = 900 MHz. (FBB = 1 MHz, I

and Q Inputs Driven in Quadrature at 1.2 V p-p, TA = 25°C)

–70

–65

–60

–55

–50

–45

CARRIER FEEDTHROUGH (dBm)

AFTER NULLING TO < –65dBm AT +25

°C

T = –40

°C

T = +85

°C

Figure 40. Carrier Feedthrough Distribution at Temperature Extremes, After

Carrier Feedthrough Nulled to < - 65 dBm at TA = 25°C. (FLO = 2140 MHz,

I and Q Inputs at a bias of 400 mV)

–75

–65

–60

–55

–50

–35

SIDEBAND SUPPRESSION (dBc)

AFTER NULLING TO < –50dBc AT +25

°C

–70

–40

–45

T = –40

°C

T = +85

°C

Figure 41. Sideband Suppression Distribution at Temperature Extremes, After

Sideband Suppression Nulled to < -50 dBc at TA = 25°C. (FLO = 2140 MHz,

FBB = 1 MHz, I and Q Inputs biased at 0.4 V)

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