Datasheet

LT6236/LT6237/LT6238
21
623637fa
For more information www.linear.com/LT6236
TYPICAL APPLICATIONS
Single Supply, Low Noise, Low Power, Bandpass Filter with Gain = 10
Driving a Fully Differential ADC
Driving a Single-Ended ADC
+
–
R2
732Ω
R4
10k
C3
0.1µF
EN
LT6236
f
0
=
1
= 1MHz
C = √C1C2, R = R1 = R2
f
0
=
(
732Ω
)
MHz, MAXIMUM f
0
= 1MHz
f
–3dB
=
f
0
A
V
= 20dB at f
0
EN = 4µV
RMS
INPUT REFERRED
I
S
= 3.7mA FOR V
+
= 5V
62367 TA02
0.1µF
C2
47pF
C1
1000pF
R3
10k
R1
732Ω
V
OUT
V
+
V
IN
2πRC
R
2.5
FREQUENCY (Hz)
100k
GAIN (dB)
23
3
–7
1M 10M
62367 TA03
Frequency Response Plot of Bandpass Filter
62367 TA04
IN
–
IN
+
270pF
38.3Ω
38.3Ω
6V
–2V
1/2 LT6237
LOWPASS FILTERS
1/2 LT6237
LTC2389-18
270pF
+
–
+
–
49.9Ω
49.9Ω
V
A
V
B
4.096V
0V
4.096V
0V
4.096V
0V
OR OR
62367 TA05
IN
–
IN
+
1nF
10Ω
LOWPASS FILTER
LTC2389-18
LT6236
+
–
4.096V
0V
6V
–2V
49.9Ω
49.9Ω