AD8348 데이터 시트보기 (PDF) - Analog Devices

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AD8348

50 MHz to 1000 MHz Quadrature Demodulator / Compact, 28-lead TSSOP package

Analog Devices 

AD8348

TYPICAL PERFORMANCE CHARACTERISTICS

VGA AND DEMODULATOR

30

4

LINERR T = +85°C, VPOS = 5V, FREQ = 380MHz

25

LINERR T = +25°C, VPOS = 5V, FREQ = 380MHz

3

20

LINERR T = –40°C, VPOS = 5V, FREQ = 380MHz

2

15

1

10

0

5

–1

0

–2

T = +85°C, VPOS = 5V, FREQ = 380MHz

–5

–3

–10

T = +25°C, VPOS = 5V, FREQ = 380MHz

–4

–15

T = –40°C, VPOS = 5V, FREQ = 380MHz

–5

–20

–6

0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2

VGIN (V)

Figure 12. Mixer Gain and Linearity Error vs. VGIN, VPOS = 5 V, FIF = 380 MHz,

FBB = 1 MHz, Temperature = −40°C, +25°C, +85°C

25

4

LINERR T = +85°C, VPOS = 2.7V, FREQ = 900MHz

20

LINERR T = +25°C, VPOS = 2.7V, FREQ = 900MHz

3

15

LINERR T = –40°C, VPOS = 2.7V,

FREQ = 900MHz

2

10

1

5

0

0

–1

–5

–2

T = +85°C, VPOS = 2.7V,

FREQ = 900MHz

–10

–3

–15

T = +25°C, VPOS = 2.7V, FREQ = 900MHz

–4

–20

T = –40°C, VPOS = 2.7V, FREQ = 900MHz

–5

–25

–6

0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2

VGIN (V)

Figure 15. Mixer Gain and Linearity Error vs. VGIN, VPOS = 2.7 V, FIF = 900 MHz,

FBB = 1 MHz, Temperature = −40°C, +25°C, +85°C

25

4

LINERR T = +85°C, VPOS = 5V, FREQ = 900MHz

20

LINERR T = +25°C, VPOS = 5V, FREQ = 900MHz

3

15

LINERR T = –40°C, VPOS = 5V,

2

FREQ = 900MHz

10

1

5

0

0

–1

–5

T = +85°C, VPOS = 5V,

–2

FREQ = 900MHz

–10

–3

–15

T = +25°C, VPOS = 5V, FREQ = 900MHz

–4

–20

T = –40°C, VPOS = 5V, FREQ = 900MHz

–5

–25

–6

0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2

VGIN (V)

Figure 13. Mixer Gain and Linearity Error vs. VGIN, VPOS = 5 V, FIF = 900 MHz,

FBB = 1 MHz, Temperature = −40°C, +25°C, +85°C

28

26

24

5V, 0.2V, +25°C

22

2.7V, 0.2V, +25°C

5V, 0.2V, +85°C

2.7V, 0.2V, +85°C

20

5V, 0.2V, –40°C

2.7V, 0.2V, –40°C

18

100 200 300 400 500 600 700 800 900 1000

IF FREQUENCY (MHz)

Figure 16. Gain vs. FIF, VGIN = 0.2 V, FBB = 1 MHz,

Temperature = −40°C, +25°C, +85°C

30

4

LINERR T = +85°C, VPOS = 2.7V, FREQ = 380MHz

25

LINERR T = +25°C, VPOS = 2.7V, FREQ = 380MHz

3

20

LINERR T = –40°C, VPOS = 2.7V,

FREQ = 380MHz

2

15

1

10

0

5

–1

0

–2

T = +85°C, VPOS = 2.7V,

FREQ = 380MHz

–5

–3

–10

T = +25°C, VPOS = 2.7V, FREQ = 380MHz

–4

–15

T = –40°C, VPOS = 2.7V, FREQ = 380MHz

–5

–20

–6

0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2

VGIN (V)

Figure 14. Mixer Gain and Linearity Error vs. VGIN, VPOS = 2.7 V, FIF = 380 MHz,

FBB = 1 MHz, Temperature = −40°C, +25°C, +85°C

–15

5V, 1.2V, +85 °C

2.7V, 1.2V, +85 °C

–20

5V, 1.2V, –40°C

2.7V, 1.2V, +25°C

2.7V, 1.2V, –40°C

–25

5V, 1.2V, +25 °C

–30

100 200 300 400 500 600 700 800 900 1000

IF FREQUENCY (MHz)

Figure 17. Gain vs. FIF, VGIN = 1.2 V, FBB = 1 MHz,

Temperature = −40°C, +25°C, +85°C

Rev. A | Page 11 of 28

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