datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

LTC6948 View Datasheet(PDF) - Linear Technology

Part Name
Description
View to exact match
LTC6948 Datasheet PDF : 36 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
LTC6948
Typical Performance Characteristics TA = 25°C. VREF+ = VD+ = VRF+ = 3.3V, VCP+ = VVCO+ =
5V, INTN = 0, DITHEN = 1, CPLE = 1, RFO[1:0] = 3, unless otherwise noted.
Charge Pump Source Current
Error vs Voltage, Temperature
5
4
3
2
1
0
–1
–2 ICP = 11.2mA
–3
CPLE = 0
105°C
–4
25°C
–40°C
–5
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
OUTPUT VOLTAGE (V)
6948 G07
RF Output HD3 vs Output Divide
(Single-Ended on RF+)
–5
O=6 O=5
–10
–15
O=3
O=4
–20
O=2
–25
–30
O=1
–35 LTC6948-4
LC = 68nH
–40 CS = 100pF
fRF = fVCO/O
–45
4.2 4.6 5.0 5.4 5.8
fVCO (GHz)
6.2 6.6
6948 G10
RF Output Power vs Frequency
(Single-Ended on RF+)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5 LTC6948-4
–2.0 LC = 68nH
CS = 100pF
–2.5
105°C
–3.0
25°C
–40°C
–3.5
0.5 1.5 2.5 3.5 4.5
FREQUENCY (GHz)
5.5 6.5
6948 G08
MUTE Output Power vs fVCO and
Output Divide
(Single-Ended on RF+)
–45
–55
LTC6948-4, LC = 68nH
CS = 100pF, fRF = fVCO/O
–65
O=1
O=2
O=3
–75
O=4
–85
O=5
O=6
–95
4.2 4.6 5.0 5.4 5.8 6.2 6.6
fVCO (MHz)
6948 G11
RF Output HD2 vs Output Divide
(Single-Ended on RF+)
–20
O=5
–25
O=3
–30
O=1
–35
–40
O=2
O=4
–45
O=6
–50 LTC6948-4, LC = 68nH,
CS = 100pF , fRF = fVCO/O
–55
4.2 4.6 5.0 5.4 5.8 6.2 6.6
fVCO (GHz)
6948 G09
LTC6948-3 Frequency Step
Transient
3.0
2.9
CALIBRATION TIME
2.8
2.7
2.6
2.5
2.4
2.3
2.2
–5 0
126MHz STEP
fPFD = 61.44MHz
fCAL = 1.28MHz
LOOP BW = 180kHz
MTCAL = 0
O=2
5 10 15
TIME (µs)
20 25
6948 G12
LTC6948-1 VCO Tuning Sensitivity
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8
FREQUENCY (GHz)
6948 G13
LTC6948-2 VCO Tuning Sensitivity
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0
FREQUENCY (GHz)
6948 G14
For more information www.linear.com/LTC6948
LTC6948-3 VCO Tuning Sensitivity
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
3.8
4.2 4.6 5.0
FREQUENCY (GHz)
5.4 5.8
6948 G15
6948f
7
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]