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LTC6946 bảng dữ liệu(PDF) 7 Page - Linear Technology

tên linh kiện LTC6946
Giải thích chi tiết về linh kiện  Ultralow Noise and Spurious 0.37GHz to 5.7GHz Integer-N Synthesizer with Integrated VCO
PDF  30 Pages
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nhà sản xuất  LINER [Linear Technology]
Trang chủ  http://www.linear.com
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LTC6946 bảng dữ liệu(HTML) 7 Page - Linear Technology

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LTC6946
7
6946fa
TYPICAL PERFORMANCE CHARACTERISTICS
TC = 25°C, VREF+ = VREFO+ = VD+ = VRF+ = 3.3V, VCP+ = VVCO+ = 5V, RFO[1:0] = 3,unless otherwise noted.
LTC6946-1 VCO Tuning Sensitivity
LTC6946-2 VCO Tuning Sensitivity
LTC6946-3 VCO Tuning Sensitivity
RF Output HD3 vs Output Divide
(Single Ended on RF–)
MUTE Output Power vs fVCO and
Output Divide (Single Ended on RF–)
LTC6946-3 Frequency Step
Transient vs CPCHI/LO
LTC6946-1 VCO Phase Noise
LTC6946-2 VCO Phase Noise
LTC6946-3 VCO Phase Noise
fVCO (GHz)
3.75
–40
–35
–30
–25
–20
4.25
4.75
5.25
5.75
6946 G10
–15
–10
–5
4.00
4.50
5.00
5.50
LTC6946-3
LC = 68nH
CS = 100pF
fRF = fVCO/O
O = 6
O = 3
O = 2
O = 1
O = 5
O = 4
fVCO (MHz)
3800 4050
–70
–60
–50
5300 5550
6946 G11
–80
–90
4300 4550 4800 5050
5800
–100
–110
–40
LTC6946-3, LC = 68nH
CS = 100pF, fRF = fVCO/O
O = 1
O = 4
O = 6
O = 5
O = 2
O = 3
TIME (μs)
0
2.55
2.60
2.65
2.70
2.75
2.80
2.85
50
100
150
200
6946 G12
250
CALIBRATIION
TIME
CPCHI,
CPCLO = 0
CPCHI,
CPCLO = 1
fPFD = 1MHz
fCAL = 125kHz
BW = 40kHz
100MHz STEP
FREQUENCY (MHz)
2100
3.0
3.5
4.5
5.0
5.5
8.0
6.5
2600
3100
6946 G13
4.0
7.0
7.5
6.0
3600
4100
FREQUENCY (MHz)
2800
3.0
3.5
4.5
5.0
5.5
8.0
6.5
3300
3800
4300
6946 G14
4.0
7.0
7.5
6.0
4800
5300
FREQUENCY (MHz)
3500
2.5
3.0
4.0
4.5
5.0
5500
7.0
6946 G15
3.5
4500
4000
6000
5000
6500
5.5
6.0
6.5
OFFSET FREQUENCY (Hz)
1k
–100
–90
–80
–70
–60
100k
10k
1M
10M 40M
6946 G16
–110
–130
–150
–120
–140
–160
–50
–40
fVCO = fRF = 3GHz
OFFSET FREQUENCY (Hz)
1k
–100
–90
–80
–70
–60
100k
10k
1M
10M 40M
6946 G17
–110
–130
–150
–120
–140
–160
–50
–40
fVCO = fRF = 4GHz
OFFSET FREQUENCY (Hz)
1k
–100
–90
–80
–70
–60
100k
10k
1M
10M 40M
6946 G18
–110
–130
–150
–120
–140
–160
–50
–40
fVCO = fRF = 5GHz



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