LTC6909 Linear Dimensions Semiconductor, LTC6909 Datasheet - Page 18

• Manufacturer Part Number: LTC6909
• Description: Multiphase Silicon Oscillator
• Manufacturer: Linear Dimensions Semiconductor

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LTC6909
TYPICAL APPLICATIONS
18
0.1μF
0.1μF
V
+
10 OUTPUT PHASES (OUTPUTS SHIFTED BY 36 DEGREES)
R
SET
21k
0.1μF
80.6k
787k
402k
140k
0.1μF
2.7V TO 5.5V
V
GND
V
SET
PH0
PH1
PH2
MOD
+
+
D
A
LTC6909
OPEN
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Using Additional Standard Logic Inverters to Achieve 10- and 14-Phase Outputs
V
GND
PH0
PH1
OUT1
OUT2
OUT3
OUT4
LP
SA
NC
INVA
NC
LPA
AGND
V
+
–
A
LTC1563-2
Combining Eight Outputs With a Lowpass Filter to Create a Sine Wave
LTC6909
249k
OUT8
OUT7
OUT6
OUT5
MOD
INVB
PH2
V
LPB
SET
NC
NC
SB
NC
EN
+
V
D
+
16
15
14
13
12
11
10
9
16
15
14
13
12
11
10
9
80.6k
402k
140k
(Inverters Are 74HC04 or Equivalent)
0.1μF
0.1μF
16.2k
20k
0° (360°)
180°
72°
252°
144°
324°
216°
36°
288°
108°
16.2k
787k
100kHz
SINE WAVE
OUTPUT
6909 TA04
0.1μF
0.1μF
V
+
R
500mV/DIV
14 OUTPUT PHASES (OUTPUTS SHIFTED BY 25.71 DEGREES)
SET
V
GND
V
SET
PH0
PH1
PH2
MOD
+
+
V
THD = 0.2%
D
A
LTC6909
+
= 5V
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
2μs/DIV
6909 TA06
0° (360°)
180°
51.43°
231.43°
102.86°
282.86°
154.29°
334.29°
205.71°
25.71°
257.14°
77.14°
308.57°
128.57°
6909 TA03
6909f