ADL5387 datasheet(25/32 Pages) AD

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ADL5375

Rev. 0 | Page 25 of 32

GSM/EDGE OPERATION

The performance of the ADL5375 in a GSM/EDGE environ-

ment is shown in this section.

Figure 64 illustrates the 6 MHz offset noise of the ADL5375-05

and the ADL5375-15 vs. output power at 940 MHz. Figure 65

demonstrates how the 6 MHz offset noise is affected by varia-

tions in LO drive level for both versions of the ADL5375 at

940 MHz.

OUTPUT POWER (dBm)

–107

–106

–105

–104

–103

–102

–101

–100

–99

–5

–4

–3

–2

–1

ADL5375-05

ADL5375-15

Figure 64. GSM/Edge (8-PSK) 6 MHz Offset Noise at 940 MHz vs. Output

Power,

LO Drive = 0 dBm

LO DRIVE (dBm)

–109

–108

–107

–106

–105

–104

–103

–102

–101

01234567

ADL5375-05

ADL5375-15

Figure 65. GSM/Edge (8-PSK) 6 MHz Offset Noise at 940 MHz vs. LO Drive,

Output Power = 0 dBm

-CDMA OPERATION

The ADL5375 is suitable for W-CDMA operation. Figure 66

and Figure 67 show the adjacent and alternate channel power

ratios for the ADL5375-05 and ADL5375-15, respectively, at an

LO frequency of 2140 MHz.

–84

–82

–80

–78

–76

–74

–72

–70

–68

–66

–64

–62

–60

–18

–16

–14

–12

–10

–8

–6

–4

OUTPUT POWER (dBm)

ALTERNATE CPR

ADJACENT CPR

Figure 66. ADL5375-05 Single-Carrier W-CDMA Adjacent and Alternate

Channel Power vs. Output Power at 2140 MHz; LO Power = 0 dBm

–20

–58

–82

–80

–78

–76

–74

–72

–70

–68

–66

–64

–62

–60

–18

–16

–14

–12

–10

–8

–6

–4

OUTPUT POWER (dBm)

ALTERNATE CPR

ADJACENT CPR

Figure 67. ADL5375-15 Single-Carrier W-CDMA Adjacent and Alternate

Channel Power vs. Output Power at 2140 MHz; LO Power = 0 dBm

Figure 66 and Figure 67 show that both versions of the ADL5375

are able to deliver about or better than −72 dB ACPR at an

output power of −10 dBm.

Figure 68 and Figure 69 illustrate the sensitivity of the EVM to

variations in LO drive at 2140 MHz for the ADL5375-05 and

ADL5375-15 respectively.

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

–6

–4

–2

LO DRIVE (dBm)

SYMBOL EVM

COMPOSITE EVM

Figure 68. ADL5375-05 Single Carrier W-CDMA Composite and Symbol EVM

vs. LO Drive at 2140 MHz; Output Power = −10 dBm

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