参数资料
型号: LTC6945IUFD#PBF
厂商: Linear Technology
文件页数: 25/28页
文件大小: 0K
描述: IC SYNTHESIZER INTEGER N 28QFN
软件下载: PLLWizard™
PLLWizard™, with .NET 2.0 installer
标准包装: 73
类型: *
PLL:
输入: 时钟
输出: 时钟
电路数: 1
比率 - 输入:输出: 1:1
差分 - 输入:输出: 是/是
频率 - 最大: 6GHz
除法器/乘法器: 是/无
电源电压: 3.15 V ~ 5.25 V
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 28-WFQFN 裸露焊盘
供应商设备封装: 28-QFN(4x5)
包装: 管件
LTC6945
6
6945f
Charge Pump Sink Current Error
vs Voltage, Output Current
Charge Pump Sink Current Error
vs Voltage, Temperature
Charge Pump Source Current
Error vs Voltage, Output Current
TYPICAL PERFORMANCE CHARACTERISTICS
Charge Pump Source Current
Error vs Voltage, Temperature
RF Output Power vs Frequency
(Single-Ended On RF)
RF Output HD2 vs Output Divide
(Single-Ended On RF)
RF Output HD3 vs Output Divide
(Single-Ended On RF)
MUTE Output Power
vs fVCO and Output Divide
(Single-Ended On RF)
Frequency Step Transient
OUTPUT VOLTAGE (V)
0
ERROR
(%)
1
3
5
4
6945 G05
–1
–3
0
2
4
–2
–4
–5
1
0.5
2
1.5
3
3.5
4.5
2.5
5
105°C
25°C
–40°C
ICP = 11.2mA
OUTPUT VOLTAGE (V)
0
ERROR
(%)
1
3
5
4
6945 G04
–1
–3
0
2
4
–2
–4
–5
1
0.5
2
1.5
3
3.5
4.5
2.5
5
250μA
1mA
11.2mA
OUTPUT VOLTAGE (V)
0
ERROR
(%)
1
3
5
4
6945 G06
–1
–3
0
2
4
–2
–4
–5
1
0.5
2
1.5
3
3.5
4.5
2.5
5
250μA
1mA
11.2mA
OUTPUT VOLTAGE (V)
0
ERROR
(%)
1
3
5
4
6945 G07
–1
–3
0
2
4
–2
–4
–5
1
0.5
2
1.5
3
3.5
4.5
2.5
5
–40°C
25°C
105°C
ICP = 11.2mA
FREQUENCY (GHz)
0
–3.5
P
OUT
(dBm)
–3.0
–2.0
–1.5
–1.0
3 3.5 4
5
4.5
5.5
1.0
6945 G08
–2.5
0.5 1 1.5 2 2.5
6
–0.5
0
0.5
105°C
25°C
–40°C
PVCO = 0dBm
LC = 180nH
CS = 270pF
TIME (μs)
0
1.85
FREQUENCY
(GHz)
1.90
2.00
2.05
2.10
10
20
25
45
6945 G12
1.95
515
30
35
40
fPFD = 1MHz
BW = 40kHz
100MHz STEP
fVCO (GHz)
0
HD3
(dBc)
–15
–10
–5
4
6945 G10
–20
–25
–30
1
2
3
5
0.5
4.5
1.5
2.5
3.5
5.5 6
fRF = fVCO/O
PVCO = 0dBm
LC = 180nH
CS = 270pF
O = 6
O = 3
O = 2
O = 1
fVCO (GHz)
0
–120
P
OUT
AT
f
VCO
/O
(dBm)
–110
–90
–80
–70
3 3.5 4
5
4.5
5.5
–30
6945 G11
–100
0.5 1 1.5 2 2.5
6
–60
–50
–40
fRF = fVCO/O
PVCO = 0dBm
LC = 180nH
CS = 270pF
O = 1
O = 2
O = 3
O = 4
O = 5
O = 6
fVCO (GHz)
0
–55
HD2
(dBc)
–50
–40
–35
–30
3 3.5 4
5
4.5
5.5
–20
6945 G09
–45
0.5 1 1.5 2 2.5
6
–25
fRF = fVCO/O
PVCO = 0dBm
LC = 180nH
CS = 270pF
O = 3
O = 5
O = 1
O = 6
O = 2
O = 4
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