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 = 2600MHz, fRF2 = 2601MHz,
PLOM = 0dBm)
Output IP3 vs LINOPT Voltage
(fRF1 = 3500MHz, fRF2 = 3501MHz,
PLOM = 0dBm)
Gain Distribution at 2140MHz
40
30
20
10
40
30
20
10
50
40
30
85°C
25°C
–40°C
f
= 3360MHz
LO
5 PARTS SHOWN
20
10
0
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
f
= 2460MHz
LO
5 PARTS SHOWN
2.0
2.5
3.0
3.5
–0.6 –0.4 –0.2
0
0.2
0.4
0.6
2.0
2.5
3.0
3.5
55881 G37
LINOPT VOLTAGE (V)
LINOPT VOLTAGE (V)
55881 G38
GAIN (dB)
55881 G39
LO Feedthrough Distribution at
2140MHz
Image Rejection Distribution at
2140MHz
Output IP3 Distribution at 2140MHz
30
20
10
0
30
20
10
0
40
30
20
10
0
85°C
25°C
–40°C
NOTE 12
85°C
25°C
–40°C
85°C
25°C
–40°C
30.4
31.2
32
32.8
33.6
34.4
–44 –43 –42 –41 –40 –39 –38 –37
–44 –43 –42 –41 –40 –39 –38 –37
55881 G40
OIP3 (dBm)
LO FEEDTHROUGH (dBm)
IMAGE REJECTION (dBc)
55881 G41
55881 G41
Output Noise Floor vs RF Output
Power and LOM Port Input Power
(fLO = 2140MHz)
Output Noise Floor vs RF Output
Power and Differential LO Input
Power (fLO = 2140MHz)
Output Noise Floor Distribution at
2140MHz
60
50
40
30
20
10
0
–135
–140
–145
–150
–155
–160
–135
–140
–145
–150
–155
–160
85°C
25°C
–40°C
–10dBm
–5dBm
0dBm
f
BB
= 2kHz, CW (NOTE 3)
–10dBm LO BALUN =
–5dBm
0dBm
5dBm
USING BD1631J50100A
= 2kHz, CW (NOTE 3)
f
BB
5dBm
10dBm
15dBm
10dBm
15dBm
20dBm
–161.2
–160.8
–160.4
–160.0
–159.6
–15
–10
–5
0
5
10
–15
–10
–5
0
5
10
NOISE FLOOR (dBm/Hz)
55881 G43
55881 G44
55881 G45
RF OUTPUT POWER (dBm)
RF OUTPUT POWER (dBm)
55881fb
10
Linear [ Linear ]
