LT2178/LT2179
12
21789fc
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 1996
LT 0310 REV C • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
LT1078/LT1079 Dual/Quad 55µA Max, Single Supply Precision Op Amps 70µV V
OS
Max and 2.5µV/°C Drift Max, 200kHz BBW,
0.07V/µs Slew Rate, Input/Output Common Mode Includes Ground
LT1211/LT1212 14MHz, 7V/µs Single Supply Dual and Quad Precision Op Amps 275µV V
OS
Max, 6µV/°C Drift Max Input Voltage Range Includes Ground
LT1490/LT1491 Dual/ Quad Micropower Rail-to-Rail Input and Output Op Amps Single Supply Input Range: –0.4V to 44V, Micropower 50µA Amplifi er,
Rail-to-Rail Input and Output, 200kHz GBW
LT2078/LT2079 Dual/Quad 55µA Max, Single Supply Precision Op Amps 70µV V
OS
Max and 2.5µV/°C Drift Max, 200kHz BBW,
0.07V/µs Slew Rate, Input/Output Common Mode Includes Ground
Surface Mount Standard Pinout
R1
301k
50k
C1
1000pF
21789 TA04
V
OUT
1µF
R2
86k
V
IN
50k
–
+
1/4
LT2179
–
+
1/4
LT2179
301k
121k
–
+
1/4
LT2179
C2
1000pF
1000pF
221k
1000pF
–
+
1/4
LT2179
3.3V
121k
12-BIT ACCURATE SIGNAL RANGE FROM 6mV TO 1.8V ON 3.3V SINGLE SUPPLY.
MAXIMUM OUTPUT OFFSET ERROR IS 448µV.
FOR EACH 2ND ORDER SECTION:
W
O
2
=
1
C1C2R1R2
R1 =
1
W
O
QC1
R2 =
Q
W
O
C2
+
Single Supply, 1kHz, 4th Order Butterworth Lowpass Filter
FREQUENCY (kHz)
0.1
GAIN(dB)
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
110
21789 TA05