LTC1064-4C View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1064-4C' PDF : 12 Pages View PDF
LTC1064-4
TYPICAL APPLICATIO S
V+
1N5817
VIN
0.1µF
1
INV C
R(h, I) 14
2
VIN
COMP2* 13
3
LTC1064-4
AGND
V–
12
4 V+
11
fCLK
1N5817
5
10
AGND 50/100 V+/V–
6
9
COMP1* VOUT
VOUT
7 INV A
NC 8
1064-4 F01
V–
0.1µF
Figure 1. Using Schottky Diodes to Protect
the IC from Power Supply Spikes
V+= 15V
0.1µF
5k
0.1µF
5k
VIN
1N5817
V+/2
1
INV C
R(h, I) 14
2
VIN
13
COMP2*
3
LTC1064-4
AGND
V–
12
4 V+
5
AGND
11
fCLK 0V TO 10V
10
50/100
6
COMP1*
7 INV A
9
VOUT
8
NC
VOUT
1064-4 F02
Figure 2. Single Supply Operation. If Fast Power Up or Down
Transients are Expected, Use a 1N5817 Schottky Diode
Between Pin 4 and Pin 5.
V+
1N5817
0.1µF
VIN
5k
5k
1
INV C
R(h, I) 14
2
VIN
13
COMP2*
3
LTC1064-4
AGND
V–
12
4 V+
5
AGND
11
fCLK
10
50/100
6
COMP1*
7 INV A
9
VOUT
8
NC
V+
VIN
2.2k
5k 1µF
T2L
LEVEL
VOUT
1
INV C
R(h, I) 14
POWER SOURCE
V+
V–
2
VIN
13
COMP2*
3
LTC1064-4
AGND
V–
12
4 V+
0.1µF 5
AGND
11
fCLK
50/100 10 V+/V–
0.1µF
10k
6
9
10k
COMP1* VOUT
–
7 INV A
8
NC
+
0.1µF
8
VOUT
1064-4 F03
Figure 3. Level Shifting the Input T2L Clock
for Single Supply Operation ≥6V.
RECOMMENDED OP AMPS:
LT1022, LT318, LT1056
4
0.1µF
1064-4 F04
Figure 4. Buffering the Filter Output. The Buffer Op Amp
Should Not Share the LTC1064-4 Power Lines.
8
VIN
V+
0.1µF
1
INV C
14
R(h, I)
2
VIN
13
COMP2*
3
LTC1064-4
AGND
V–
12
4 V+
11
fCLK
V–
0.1µF
5
AGND
50/100 10 V+/V–
6
9 4.99k
COMP1* VOUT
4.99k
7
INV A
8
NC
430pF
10k
200pF
–
LT1056
+
VOUT
50Ω
0.027µF
1064-4 F05
Figure 5. Adding an Output Buffer-Filter to Eliminate Any Clock Feedthrough.
Passband Error of Output Buffer is ±0.1dB to 50kHz, –3dB at 94kHz.
10644fb
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