AD7002AS datasheet(9/16 Pages) AD

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AD7002

–9–

REV. B

0.0

–60.0

1.00 + 07

–45.0

–55.0

1.00 + 04

–50.0

1.00 + 03

–30.0

–40.0

–35.0

–25.0

–20.0

–15.0

–5.0

–10.0

1.00 + 06

1.00 + 05

FREQUENCY – Hz

Figure 5. Transmit Filter Frequency Response

–90

6.4

–70

–80

8.0

–60

–50

–40

–30

–20

–10

5.6

4.8

4.0

3.2

2.4

1.6

FREQUENCY – MHz

GMSK SPECTRUM TEST, DC TO 6.4MHz.

FREQUENCY RESOLUTION: 30.1514kHz

Figure 7. Typical Spectrum Plot of the Transmit Channel

When Transmitting Random Data (0 MHz to 6.4 MHz)

–5

–2

–4

–3

–1

PEAK PHASE TRAJECTORY ERROR = 1.56

RMS PHASE TRAJECTORY ERROR = 0.79

Figure 9. Typical Plot of the Transmit Phase Trajectory

Error

0.80

0.00

1.00 + 07

0.20

0.10

1.00 + 04

1.00 + 03

0.40

0.30

0.50

0.60

0.70

1.00 + 06

1.00 + 05

FREQUENCY – Hz

Figure 6. Transmit Filter Group Delay

–90

1000

–60

–80

100

–70

–30

–50

–40

–20

–10

900

800

700

600

500

400

300

200

FREQUENCY – kHz

GMSK MASK

GMSK SPECTRUM

Figure 8. Typical Spectrum Plot of the Transmit Channel

When Transmitting Random Data (0 MHz to 1 MHz)

1.27

1.21

1.22

1.24

1.23

1.26

1.25

Figure 10. Typical Plot of the Composite Vector Magnitude

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