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LTC6948 Datasheet(PDF) 10 Page - Analog Devices

Part # LTC6948
Description  300MHz to 9GHz High Linearity I/Q Demodulator with Wideband IF Amplifier
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC6948 Datasheet(HTML) 10 Page - Analog Devices

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LTC5594
10
Rev A
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS V
CC = 5V, EN = 3.3V, TC = 25°C, PLO = 6dBm,
HSLO, RF tone spacing = 4MHz, fIF = 30MHz, PIF = –1.5dBm per tone, and register defaults. DC Blocks, 50Ω terminations, and
MACOM H9 180° combiner at amplifier outputs de-embedded from measurement unless otherwise noted. Test circuit shown in
Figure 1 with 1GHz interstage filter.
0
32
64
96 128 160 192 224 256
20
10
0
–10
–20
–30
–40
–50
–60
–70
–80
REGISTER VALUE (INTEGER)
HD2IY, –40°C
HD2IY, 25°C
HD2IY, 85°C
HD2IY, 105°C
HD2IX, –40°C
HD2IX, 25°C
HD2IX, 85°C
HD2IX, 105°C
I-CHANNEL
fRF = 5800MHz
5594 G28
0
32
64
96 128 160 192 224 256
20
10
0
–10
–20
–30
–40
–50
–60
–70
–80
REGISTER VALUE (INTEGER)
HD2QY, –40°C
HD2QY, 25°C
HD2QY, 85°C
HD2QY, 105°C
HD2QX, –40°C
HD2QX, 25°C
HD2QX, 85°C
HD2QX, 105°C
Q-CHANNEL
fRF = 5800MHz
5594 G29
0
1
2
3
4
5
6
7
8
9 10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
RF FREQUENCY (GHz)
I, –40°C
I, 25°C
I, 85°C
I, 105°C
Q, –40°C
Q, 25°C
Q, 85°C
Q, 105°C
5594 G30
0
1
2
3
4
5
6
7
8
9 10
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
RF FREQUENCY (GHz)
I, –40°C
I, 25°C
I, 85°C
I, 105°C
Q, –40°C
Q, 25°C
Q, 85°C
Q, 105°C
C
OPTIMIZED AT 25°C
5594 G31
0
32
64
96 128 160 192 224 256
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
REGISTER VALUE (INTEGER)
HD3IY, –40°C
HD3IY, 25°C
HD3IY, 85°C
HD3IY, 105°C
HD3IX, –40°C
HD3IX, 25°C
HD3IX, 85°C
HD3IX, 105°C
I-CHANNEL
fRF = 5800MHz
5594 G32
0
32
64
96 128 160 192 224 256
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
REGISTER VALUE (INTEGER)
HD3QY, –40°C
HD3QY, 25°C
HD3QY, 85°C
HD3QY, 105°C
HD3QX, –40°C
HD3QX, 25°C
HD3QX, 85°C
HD3QX, 105°C
Q-CHANNEL
fRF = 5800MHz
5594 G33
0
1
2
3
4
5
6
7
8
9 10
15
14
13
12
11
10
9
8
7
6
5
RF FREQUENCY (GHz)
I
Q
5594 G34
0
1
2
3
4
5
6
7
8
9 10
0
–10
–20
–30
–40
–50
–60
–70
LO FREQUENCY (GHz)
–40°C
25°C
85°C
105°C
5594 G35
0
1
2
3
4
5
6
7
8
9 10
0
–10
–20
–30
–40
–50
–60
–70
LO FREQUENCY (GHz)
–6dBm
0dBm
6dBm
12dBm
5594 G36
HD2 vs Temperature (TC) and
Register Value
Optimized HD3 vs
Temperature (TC)
Output Referred P1dB
HD2 vs Temperature (TC) and
Register Value
HD3 vs Temperature (TC) and
Register Value
Image Rejection vs
Temperature (TC)
HD3 vs Temperature (TC)
HD3 vs Temperature (TC) and
Register Value
Image Rejection vs LO Power



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