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LTC6948 Datasheet(PDF) 11 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) 11 Page - Analog Devices

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LTC5594
11
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
1
2
3
4
5
6
7
8
9 10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
RF FREQUENCY (GHz)
–40°C
25°C
85°C
105°C
OPTIMIZED AT 25°C
5594 G37
–1 –0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8 1
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
BASEBAND FREQUENCY (GHz)
DEFAULT
OPTIMIZED
TC = 55°C
FIXED fLO = 5800MHz
OPTIMIZED AT fRF = 5900MHz
5594 G38
0
8
16
24
32
40
48
56
64
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
REGISTER VALUE (INTEGER)
–40°C
25°C
85°C
105°C
fRF = 5800MHz
5594 G39
0
64 128 192 256 320 384 448 512
3
2
1
0
–1
–2
–3
–4
–5
–6
–7
REGISTER VALUE (INTEGER)
–40°C
25°C
85°C
105°C
fRF = 5800MHz
5594 G40
0
1
2
3
4
5
6
7
8
9 10
100
80
60
40
20
0
–20
–40
–60
–80
–100
LO FREQUENCY (GHz)
–40°C
25°C
85°C
105°C
5594 G41
0
1
2
3
4
5
6
7
8
9 10
100
80
60
40
20
0
–20
–40
–60
–80
–100
LO FREQUENCY (GHz)
–6dBm
0dBm
6dBm
12dBm
5594 G42
0
1
2
3
4
5
6
7
8
9 10
100
80
60
40
20
0
–20
–40
–60
–80
–100
LO FREQUENCY (GHz)
–40°C
25°C
85°C
105°C
OPTIMIZED AT 25°C
5594 G43
0
32
64
96 128 160 192 224 256
100
80
60
40
20
0
–20
–40
–60
–80
–100
DC OFFSET DAC (INTEGER)
–40°C
25°C
85°C
105°C
fLO = 5830MHz
5594 G45
–30
–25
–20
–15
–10
–5
0
40
35
30
25
20
15
10
RF INPUT POWER (dBm)
–6dBm
0dBm
6dBm
12dBm
TC = 25°C
fLO = 2140MHz
fRF, BLOCK = 2139MHz
fIF, NOISE = 60MHz
5594 G45
Optimized Image Rejection vs
Temperature (TC)
Phase Error vs Temperature (TC)
and PHA Register Value
Optimized DC Offset vs
Temperature (TC)
Optimized Image Rejection vs
Baseband Frequency
DC Offset vs Temperature (TC)
DC Offset vs Temperature (TC)
and Register Value
Gain Error vs Temperature (TC)
and GERR Register Value
DC Offset vs LO Power
Blocking Noise Figure vs
LO Power



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