12
LT1464/LT1465
14645fa LT/GP 0197 5K REV A • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1996
TYPICAL APPLICATION
U
Low Voltage 0.027% Frequency to Voltage Converter
PART NUMBER DESCRIPTION COMMENTS
LT1057 Dual JFET Input Precision, High Speed Op Amp Fast Settling Time, 14V/µs Slew Rate, 5Mhz GBW, 450µV
V
OS
(Max), 50pA I
OS
(Max)
LT1113 Dual Low Noise, Precision, JFET Input Op Amp 6nV/√Hz Input Noise Voltage Density, 480pA I
B
, 6.3MHz GBW
LT1169 Dual Low Noise, Picoampere Bias Current, 20pA I
B
, 8nV/√Hz e
n
, 5.3MHz GBW, 1.5pF Input Capacitance
JFET Input Op Amp
LT1457 Dual Precision JFET Input Op Amp C-Load Drives 10,000pF Capacitive Load, 450µV V
OS
(Max), 4µV/°C Drift
LT1462/LT1463 Dual/Quad Micropower, C-Load Picoampere Bias 28µA Supply Current Per Amplifiers Drives 10µF Capacitive Load, 175kHz GBW
Current JFET Input Op Amps
RELATED PARTS
13 14
4
16 17
12
C
S
1000pF
+
–
5V
–5V
2
3
8
1
4
1/2 LT1464
1/4 LTC1043
0V TO 3V
OUTPUT
5V
–5V
C2
1µF
75k*
10k
GAIN TRIM
C1
1µF
f
IN
= FREQUENCY IN
0kHz to 30kHz
R1
1k
LT1004-1.2C
–5V
V
OUT
= (R2)(C
S
)(
V
REF
)f
IN
TRW#MTR-5/120ppm
LT1464 • TA04
R2
*
V
REF
= –1.235V
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
(408) 432-1900
FAX: (408) 434-0507
●
TELEX: 499-3977
●
www.linear-tech.com