Datasheet

17
LTC1563-2/LTC1563-3
156323fa
TYPICAL APPLICATIO S
U
4096 Point FFT of the Output Data
22kHz, 5th Order, 0.1dB Ripple Chebyshev Lowpass Filter
Driving the LTC1604, 16-Bit ADC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LP
SA
NC
INVA
NC
LPA
AGND
V
–
V
+
LPB
NC
INVB
NC
SB
NC
EN
5V
V
IN
5V
R31
82.5k
R32
78.7k
R22
137k
R21
243k
0.1µF
LTC1563-2
0.1µF
C11
560pF
R12 137k
R
A1
26.7k R
B1
215k
+
+
+
+
+
1
2
3
4
5
6
7
8
9
10
34
A
IN
+
A
IN
–
V
REF
REFCOMP
AGND
AGND
AGND
AGND
DV
DD
DGND
V
SS
35
36
33
32
31
30
27
11 TO 26
29
28
AV
DD
AV
DD
SHDN
CS
CONVST
RD
BUSY
OV
DD
OGND
LTC1604
560pF
2.2µF
47µF
49.9Ω
10µF
10µF
10µF
10µF
5V OR 3V
16-BIT
PARALLEL BUS
µP
CONTROL
LINES
5V
10Ω
–5V
–5V
+
10µF
1563 TA08
0
–20
–40
–60
–80
–100
–120
–140
0 36.58 73.15 109.73 146.30
FREQUENCY (kHz)
AMPLITUDE (dB)
f
SAMPLE
= 292.6kHz
f
IN
= 20kHz
SINAD = 85dB
THD = –91.5dB
1563 TA08a