LT5558 데이터 시트보기 (PDF) - Linear Technology
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LT5558 Datasheet PDF : 16 Pages
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LT5558
TYPICAL PERFORMANCE CHARACTERISTICS VCC = 5V, EN = High, TA = 25°C, fLO = 900MHz,
fRF = 902MHz, PLO = 0dBm. BBPI, BBMI, BBPQ, BBMQ CM input voltage = 2.1VDC, baseband input frequency = 2MHz, I and Q 90°
shifted, without image or LO feedthrough nulling. fRF = fBB + fLO (upper side-band selection). PRF(OUT) = –10dBm (–10dBm/tone for
2-tone measurements), unless otherwise noted. (Note 3)
RF CW Output Power, HD2 and
HD3 vs CW Baseband Voltage and
Temperature
–10
10
–20
0
RF
–30
–10
–40
–20
HD3
–50
–30
HD2
–60
–40
–70
–80
0
1
2
3
–40°C
25°C
85°C
4
5
I AND Q BASEBAND VOLTAGE (VP-P, DIFF)
–50
–60
5558 G17
HD2 = MAX POWER AT fLO + 2 • fBB OR fLO – 2 • fBB
HD3 = MAX POWER AT fLO + 3 • fBB OR fLO – 3 • fBB
RF CW Output Power, HD2 and
HD3 vs CW Baseband Voltage and
Supply Voltage
–10
10
–20
0
RF
–30
–10
–40
–20
HD3
–50
–30
HD2
–60
–40
–70
–80
0
1
2
3
4.5V
5V
5.5V
4
5
I AND Q BASEBAND VOLTAGE (VP-P, DIFF)
–50
–60
5558 G18
HD2 = MAX POWER AT fLO + 2 • fBB OR fLO – 2 • fBB
HD3 = MAX POWER AT fLO + 3 • fBB OR fLO – 3 • fBB
LO Feedthrough to RF Output vs
CW Baseband Voltage
–30
5V, –40°C
5V, 25°C
5V, 85°C
–35
4.5V, 25°C
5.5V, 25°C
–40
–45
–50
0
1
2
3
4
5
I AND Q BASEBAND VOLTAGE (VP-P, DIFF)
5558 G19
Image Rejection vs CW Baseband
Voltage
–40
5V, –40°C
5V, 25°C
5V, 85°C
–45
4.5V, 25°C
5.5V, 25°C
–50
–55
–60
0
1
2
3
4
5
I AND Q BASEBAND VOLTAGE (VP-P, DIFF)
5558 G20
RF Two-Tone Power (Each Tone),
IM2 and IM3 vs Baseband Voltage
and Temperature
10
0
RF
–10
–20
fBBI = 2MHz, 2.1MHz, 0°
–30 fBBQ = 2MHz, 2.1MHz, 90°
–40
–50
–60
–70
–80
0.1
IM3
IM2
1
–40°C
25°C
85°C
10
I AND Q BASEBAND VOLTAGE (VP-P, DIFF, EACH TONE)
5558 G21
IM2 = POWER AT fLO + 4.1MHz
IM3 = MAX POWER AT fLO + 1.9MHz OR fLO + 2.2MHz
RF Two-Tone Power (Each Tone),
IM2 and IM3 vs Baseband Voltage
and Supply Voltage
10
0
RF
–10
–20 fBBI = 2MHz, 2.1MHz, 0°
–30 fBBQ = 2MHz, 2.1MHz, 90°
–40
IM3
IM2
–50
–60
–70
–80
0.1
4.5V
5V
5.5V
1
10
I AND Q BASEBAND VOLTAGE (VP-P, DIFF, EACH TONE)
5558 G22
IM2 = POWER AT fLO + 4.1MHz
IM3 = MAX POWER AT fLO + 1.9MHz OR fLO + 2.2MHz
5558fa
6
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