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.
Output IP3 vs LINOPT Voltage
(fRF1 = 2139MHz, fRF2 = 2140MHz,
PLOM = 0dBm)
Output IP3 vs LINOPT Voltage
(fRF1 = 2599MHz, fRF2 = 2600MHz,
PLOM = 0dBm)
Output IP3 vs LINOPT Voltage
(fRF1 = 3499MHz, fRF2 = 3500MHz,
PLOM = 0dBm)
40
30
20
10
40
30
20
10
40
30
20
10
f
= 2280MHz
f
= 2740MHz
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
f
= 3640MHz
LO
LO
LO
5 PARTS SHOWN
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
2.0
2.5
3.0
3.5
2.0
2.5
3.0
3.5
2.0
2.5
3.0
3.5
LINOPT VOLTAGE (V)
55881 G28
55881 G29
55881 G30
LINOPT VOLTAGE (V)
LINOPT VOLTAGE (V)
Output IP3 vs RF Frequency for Low
Side LO Injection (fBB1 = 140MHz,
fBB2 = 141MHz, PLOM = 0dBm)
Output IP3 vs RF Frequency for Low
Side LO Injection (fBB1 = 140MHz,
fBB2 = 141MHz, PLOM = 10dBm)
Output IP3 vs LINOPT Voltage
(fRF1 = 450MHz, fRF2 = 451MHz,
PLOM = 0dBm)
40
30
20
10
40
30
20
10
40
30
20
10
f
= f – f
LO RF BB1
f
= 310MHz
LO
f
= f – f
LO RF BB1
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
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
0
0
0
1
2
3
4
5
6
2.0
2.5
3.0
3.5
0
1
2
3
4
5
6
RF FREQUENCY (GHz)
LINOPT VOLTAGE (V)
55881 G31
RF FREQUENCY (GHz)
55881 G33
55881 G32
Output IP3 vs LINOPT Voltage
Output IP3 vs LINOPT Voltage
(fRF1 = 1900MHz, fRF2 = 1901MHz,
PLOM = 0dBm)
Output IP3 vs LINOPT Voltage
(fRF1 = 2140MHz, fRF2 = 2141MHz,
PLOM = 0dBm)
(fRF1 = 900MHz, fRF2 = 901MHz,
PLOM = 0dBm)
40
30
20
10
40
30
20
10
40
30
20
10
f
= 760MHz
f
= 1760MHz
LO
f
= 2000MHz
LO
LO
5 PARTS SHOWN
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
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
2.0
2.5
3.0
3.5
2.0
2.5
3.0
3.5
2.0
2.5
3.0
3.5
LINOPT VOLTAGE (V)
55881 G35
LINOPT VOLTAGE (V)
55881 G34
LINOPT VOLTAGE (V)
55881 G36
55881fb
9
Linear [ Linear ]
