LTC1562 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1562' PDF : 28 Pages View PDF
LTC1562
TYPICAL APPLICATIONS (Advanced)
8th Order 50kHz Lowpass Elliptic Filter
with 100dB Stopband Attenuation
CIN2 24pF
RIN1
48.7k
VIN
RQ1 30.1k
R21 31.6k
5V
0.1µF
R23 31.6k
RQ3 34k
RIN3 31.6k
RIN2 37.4k
1
INVB
2
V1B
3
V2B
20
INVC
19 RQ2 13k
V1C
18 R22 57.6k
V2C
5 V+ LTC1562 V – 16
6
SHDN
15
AGND
0.1µF
8
V2A
9
V1A
10
INVA
13
V2D
12 R24 32.4k
V1D
11 RQ4 11.5k
INVD
RIN4 32.4k
– 5V
VOUT
CIN3 18pF
CIN4 10pF
1562 TA12a
SCHEMATIC INCLUDES PIN NUMBERS FOR 20-PIN PACKAGE.
PINS 4, 7, 14, 17 (NOT SHOWN) ALSO CONNECT TO V –
20
0
– 20
– 40
– 60
– 80
–100
–120
10
Amplitude Response
100
FREQUENCY (kHz)
500
1562 TA12b
USES THREE R-C UNIVERSAL NOTCHES AT fN = 133kHz, 167kHz, 222kHz.
DETAILED DESCRIPTION IN LINEAR TECHNOLOGY DESIGN NOTE 195.
WIDEBAND OUTPUT NOISE 60µVRMS
8th Order 100kHz Elliptic Bandpass Filter
RFF2 301k
RIN1
95.3k
1
VIN
INVB
CIN1
5.6pF
RQ1 86.6k
2
V1B
R21 10.7k
3
V2B
RIN2 93.1k
20
INVC
19
V1C
18
V2C
RQ2 84.5k
R22 10k
5V
5 V+ LTC1562 V – 16
0.1µF
6
SHDN
15
AGND
0.1µF
R23 10k
8
V2A
13
V2D
RIN3 294k
RQ3 71.5k
9
V1A
10
INVA
12
V1D
11
INVD
R24 9.53k
RQ4 82.5k
CIN3 18pF
RIN4 95.3k
RFF4 332k
– 5V
VOUT
SCHEMATIC INCLUDES PIN NUMBERS FOR 20-PIN PACKAGE.
PINS 4, 7, 14, 17 (NOT SHOWN) ALSO CONNECT TO V –
1562 F13a
10
0
– 10
– 20
– 30
– 40
– 50
– 60
– 70
– 80
– 90
25
Amplitude Response
100
FREQUENCY (kHz)
175
1562 TA13b
24
Share Link: 
