LT5503EFE-TRPBF データシートの表示（PDF） - Linear Technology

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LT5503EFE-TRPBF

1.2GHz to 2.7GHz Direct IQ Modulator and Mixer

Linear Technology 

LT5503

TYPICAL PERFOR A CE CHARACTERISTICS (I/Q Modulator)

VCC1 = 3VDC, 2.4GHz matching, MODEN = high, GC1 = GC2 = low (max gain), TA = 25°C, MODRFIN = 2.45GHz at –16dBm, (I–IB) and

(Q–QB) = 100kHz sine at 1VP-P differential, Q leads I by 90°, unless otherwise noted. (Test circuit shown in Figure 2.)

Modulator Supply Current vs

Supply Voltage

38

36

TA = 85°C

34

32

30

TA = 25°C

28

26

24

22

TA = –40°C

20

1.8

2.5

3.2

3.9

4.6

5.3

VCC1 SUPPLY VOLTAGE (V)

5503 G01

2.45GHz Modulated Output

Power vs Supply Voltage

–2

–3

–4

–5

–6

1.8

PLO1 = –12dBm

PLO2 = –18dBm

BASEBAND = 1VP-P

TA = 25°C

2.4 3.0 3.6 4.2 4.8 5.4

SUPPLY VOLTAGE (V)

5503 TA01b

Modulator Shutdown Current vs

Supply Voltage

100

MODEN = LOW

10

TA = 85°C

1

TA = 25°C

0.1

1.8

TA = –40°C

2.5

3.2

3.9

4.6

5.3

VCC1 SUPPLY VOLTAGE (V)

5503 G02

Baseband Frequency Response

I/Q Amplitude = 1VP-P

0

–5

DESIRED

SIDEBAND

–10

–15

–20

–25

–30

–35

–40

0.1

CARRIER

IMAGE

1

10

I, Q INPUT FREQUENCY (MHz)

5503 G05

Typical SSB Spectrum

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

2449.6 2449.8 2450.0 2450.2 2450.4 2450.6

FREQUENCY (MHz)

5503 G07

MODEN Current vs Enable

Voltage

220

MODEN = VCC1

200

180

TA = 85°C

160

140

TA = 25°C

120

100

TA = –40°C

80

60

40

1.8

2.5

3.2

3.9

4.6

5.3

MODEN VOLTAGE (V)

5503 G03

MODRFIN and MODRFOUT

Return Loss 2.4GHz Matching

0

MODRFOUT

–10

–20

–30

–40

2050

MODRFIN

2250

2450

2650

FREQUENCY (MHz)

2850

5503 G06

5503f

5

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