Datasheet > ADL5330_05

ADL5330_05

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
24页	865K
描述
10 MHz to 3 GHz VGA with 60 dB Gain Control Range

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数据手册

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ADL5330_05 数据手册

ADL5330

–20

–30

–40

–50

–60

–70

–80

–90

–100

–50

–55

–60

–65

–70

–75

–80

–85

–90

WCDMA TRANSMIT APPLICATION

Figure 43 shows a plot of the output spectrum of the ADL5330

transmitting a single-carrier WCDMA signal (Test Model 1-64

at 2140 MHz). The carrier power output is approximately

−9.6 dBm. The gain control voltage is equal to 1.4 V giving a

gain of approximately 14.4 dB. At this power level, an adjacent

channel power ratio of −65.61 dBc is achieved. The alternate

channel power ratio of −71.37 dBc is dominated by the noise

floor of the ADL5330.

ACPR +5MHZ OFFSET

ACPR +10MHZ

OFFSET

NOISE –50MHz OFFSET

MARKER 1 [T1]

RBW 30kHz

RF ATT 0dB

REF LVL

–20dBm

–29.78dBm VBW 300kHz

2.13996994GHz SWT 100ms UNIT

dBm

–20

–30

1 [T1]

–29.78 dBm

2.13996994 GHz

0.4 dB OFFSET

–40 –35 –30 –25 –20 –15 –10

–5

OUTPUT POWER (dBm)

CH PWR

ACP Up

–9.56 dBm

–66.30 dB

–65.61 dB

–71.37 dB

–72.79 dB

ACP Low

ALT1 Up

ALT1 Low

–40

Figure 44. ACPR and Noise vs. Output Power; Single-Carrier

WCDMA Input (Test Model 1-64 at 2140 MHz), V_GAIN= 1.4 V (Fixed)

–50

1 AVG

1RM

EXT

Figure 45 shows how output power, ACPR, and noise vary with

the gain control voltage. V_GAINis varied from 0 V to 1.4 V and

input power is held constant at −19 dBm.

–60

–70

–80

–20

–30

–40

–50

–60

–70

–80

–90

–100

–90

CL2

CL1

–100

–110

–120

CU2

CU1

CU2

CL1

CU1

OUTPUT POWER

ACPR 5MHz

–10

–20

–30

–40

–50

–60

–70

CENTER 2.14GHz

2.46848MHz/

SPAN 24.6848MHz

Figure 43. Single-Carrier WCDMA Spectrum at 2140 MHz;

V_GAIN= 1.4 V, P_IN= −23 dBm

Figure 44 shows how ACPR and noise vary with different input

power levels (gain control voltage is held at 1.4 V). At high

power levels, both adjacent and alternate channel power ratios

sharply increase. As output power drops, adjacent and alternate

channel power ratios both reach minima before the measure-

ment becomes dominated by the noise floor of the ADL5330. At

this point, adjacent and alternate channel power ratios become

approximately equal.

ACPR 10MHz

NOISE –50MHz OFFSET

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

(V)

GAIN

Figure 45. Output Power, ACPR, and Noise vs. V_GAIN

;

Single-Carrier WCDMA (Test Model 1-64 at 2140 MHz) Input at −19 dBm

As the output power drops, the noise floor, measured in dBm/

Hz at 50 MHz carrier offset, initially falls and then levels off.

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