参数资料
型号: LTC6946IUFD-3#PBF
厂商: Linear Technology
文件页数: 27/30页
文件大小: 0K
描述: IC INTEGER-N PLL W/VCO 28-QFN
软件下载: PLLWizard™
PLLWizard™, with .NET 2.0 installer
标准包装: 73
类型: 时钟/频率合成器(RF/IF),分数-N,整数-N,
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: 5.79GHz
除法器/乘法器: 是/是
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
LTC6946
6
6946fa
TYPICAL PERFORMANCE CHARACTERISTICS
Charge Pump Sink Current Error
vs Voltage, Output Current
Charge Pump Source Current
Error vs Voltage, Temperature
Charge Pump Sink Current Error
vs Voltage, Temperature
RF Output Power vs Frequency
(Single Ended on RF)
Charge Pump Source Current
Error vs Voltage, Output Current
RF Output HD2 vs Output Divide
(Single Ended on RF)
REF Input Sensitivity
vs Frequency
REF0 Output Power vs Frequency
TC = 25°C, VREF+ = VREFO+ = VD+ = VRF+ = 3.3V, VCP+ = VVCO+ = 5V, RFO[1:0] = 3,unless otherwise noted.
REFO Phase Noise
FREQUENCY (MHz)
0
SENSITIVITY
(dBm)
–15
–20
–25
–30
–35
–40
–45
–50
–55
200
6946 G01
50
100
150
250
175
25
75
125
225
BST = 1
FILT = 0
105°C
25°C
–40°C
FREQUENCY (MHz)
0
P
OUT
(dBm)
4
3
2
1
0
–1
–2
–3
–4
200
6946 G02
50
100
150
250
175
25
75
125
225
105°C
25°C
–40°C
OFFSET FREQUENCY (Hz)
–155
PHASE
NOISE
(dBc/Hz)
–150
–145
–140
100
10k
100k
1M
6946 G03
–160
1k
POUT = 1.45dBm
fREF = 10MHz
BST = 1
FILT = 3
NOTE 8
OUTPUT VOLTAGE (V)
0
ERROR
(%)
1
3
5
4
6946 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
6946 G05
–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
OUTPUT VOLTAGE (V)
0
ERROR
(%)
1
3
5
4
6946 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
6946 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)
0.5
P
OUT
(dBm)
–2.5
0.5
1.0
1.5
3.5
3
4 4.5
6946 G08
–3.5
–0.5
–1.5
–3.0
0
–4.0
–1.0
–2.0
1
2 2.5
5 5.5 6
–40°C
25°C
105°C
LTC6946-3
LC = 68nH
CS = 100pF
fVCO (GHz)
3.75
–50
HD2
(dBc)
–45
–40
–35
–30
4.25
4.75
5.25
5.75
6946 G09
–25
–20
4.00
4.50
5.00
5.50
LTC6946-3, fRF = fVCO/O
LC = 68nH, CS = 100pF
O = 3
O = 2
O = 1
O = 6
O = 4
O = 5
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