LTC5588-1
TYPICAL PERFORMANCE CHARACTERISTICS VCC = 3.3V, EN = 3.3V, TA = 25°C, LOP input
AC-terminated with 50Ω to ground, BBPI, BBMI, BBPQ, BBMQ inputs 0.5VDC, and 1VP-P(DIFF), baseband input frequencies = 4.5MHz
and 5.5MHz for OIP3 and OIP2, or else baseband input frequency = 100kHz, I and Q 90° shifted, lower sideband selection, LINOPT pin
floating, unless otherwise noted. Test circuit is shown in Figure 8.
LO Feedthrough to RF Output
vs LO Frequency (PLOM = 10dBm)
LO Feedthrough to RF Output
vs LO Frequency for EN = Low
Image Rejection vs LO Frequency
(PLOM = 0dBm)
–20
–30
–40
–50
–60
–70
–80
–20
–30
–40
–50
–20
–30
–40
–50
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
P
= 10dBm
LOM
P
= 0dBm
LOM
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
–60
–60
0
2
3
4
5
6
0
1
2
3
4
5
6
1
0
1
2
3
4
5
6
LO FREQUENCY (GHz)
LO FREQUENCY (GHz)
LO FREQUENCY (GHz)
55881 G12
55881 G10
55881 G11
LO Feedthrough to RF Output
vs RF Power (PLOM = 0dBm,
fRF = 900MHz)
LO Feedthrough to RF Output
vs RF Power (PLOM = 0dBm,
fRF = 2140MHz)
Image Rejection vs RF Power
(PLOM = 0dBm, fRF = 900MHz)
–40
–41
–42
–43
–40
–45
–50
–55
–36
–38
–40
–42
–44
–46
–48
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
–44
–45
–15
–5
0
5
10
15
–15
–5
0
5
10
15
–10
–10
–15
–5
0
5
10
15
–10
RF POWER (dBm)
RF POWER (dBm)
RF POWER (dBm)
55881 G13
55881 G14
55881 G15
Image Rejection vs RF Power
(PLOM = 0dBm, fRF = 2140MHz)
Output IP3 vs LINOPT Voltage
(fLO = 450MHz, PLOM = 0dBm)
Output IP3 vs LINOPT Voltage
(fLO = 900MHz, PLOM = 0dBm)
40
30
20
10
40
30
20
10
–48
–50
–52
–54
–56
–58
–60
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
5 PARTS SHOWN
5 PARTS SHOWN
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
–15
–5
0
5
10
15
2.0
2.5
3.0
3.5
2.0
2.5
3.0
3.5
–10
LINOPT VOLTAGE (V)
LINOPT VOLTAGE (V)
RF POWER (dBm)
55881 G16
55881 G17
55881 G18
55881fb
7
Linear [ Linear ]
