LTC5588IPF-1#PBF Linear Technology, LTC5588IPF-1#PBF Datasheet - Page 23

• Manufacturer Part Number: LTC5588IPF-1#PBF
• Description: IC, MODULATOR, 200MHz To 6GHz, TQFN-24
• Manufacturer: Linear Technology

Specifications of LTC5588IPF-1#PBF

• Frequency Range: 200MHz To 6GHz
• Rf Type: GSM, LTE, WCDMA, WiMax
• Supply Voltage Range: 3.15V To 3.45V
• Rf Ic Case Style: TQFN
• No. Of Pins: 24
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

APPLICATIONS INFORMATION
RF Section
After upconversion, the RF outputs of the I and Q mixers
are combined. An on-chip balun performs internal dif-
ferential to single-ended conversion, while transforming
the output signal to 50Ω as shown in Figure 1.
Table 8 shows the RF port output impedance vs frequency
for EN = High.
Table 8. RF Output Impedance vs Frequency for EN = High
FREQUENCY
(MHz)
0.25
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.2
1.4
1.6
1.8
1.9
2.0
2.5
3.0
3.2
3.5
4.0
4.5
5.0
5.5
6.0
IMPEDANCE
RF OUTPUT
7.8+j11
8.7+j13
9.7+j16
58+j7.1
55+j0.2
27+j2.2
23+j4.5
22+j6.8
52-j2.7
50-j4.3
39-j5.9
32-j1.9
30-j0.2
12+j21
16+j25
19+j29
24+j32
30+j34
35+j35
41+j34
52+j28
58+j18
19+j11
17+j20
15+j27
REFLECTION COEFFICIENT
0.742
0.723
0.702
0.660
0.609
0.560
0.509
0.457
0.409
0.359
0.266
0.180
0.098
0.042
0.032
0.043
0.142
0.227
0.255
0.298
0.365
0.406
0.475
0.541
0.613
MAG
ANGLE
–149
–173
–180
154
149
143
133
123
114
106
–52
–92
172
167
161
151
133
120
3.4
98
91
85
70
57
39
The RF port output impedance for EN = Low is given in
Table 9.
Table 9. RF Output Impedance vs Frequency for EN = Low
FREQUENCY
(MHz)
0.25
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.2
1.4
1.6
1.8
1.9
2.0
2.5
3.0
3.2
3.5
4.0
4.5
5.0
5.5
6.0
IMPEDANCE
RF OUTPUT
7.2+j11
8.0+j13
9.0+j16
57+j7.0
53+j0.4
27+j3.6
24+j5.6
22+j6.9
12+j21
15+j25
19+j29
23+j32
29+j34
35+j35
40+j34
51+j28
57+j18
51-j2.4
48-j4.0
38-j4.9
31-j0.7
29+1.0
19+j11
17+j20
15+j28
REFLECTION COEFFICIENT
0.761
0.742
0.720
0.675
0.622
0.571
0.518
0.464
0.414
0.363
0.266
0.175
0.090
0.030
0.025
0.044
0.153
0.240
0.266
0.308
0.365
0.405
0.478
0.563
0.628
MAG
LTC5588-1
ANGLE
–111
–155
–177
–177
155
149
144
133
123
115
107
–74
169
164
161
151
132
118
7.0
99
92
86
72
60
43
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