LT1495/LT1496
TYPICAL APPLICATIONS
N
13µA, 0kHz to 10kHz Voltage to Frequency Converter
270k
10M*
5V
390Ω
V
IN
0V TO 2.5V
562k*
100k
1/2
LT1495
3.9M*
–
0.0082µF
LTC
®
1440
1µF
+
12pF
1N5712
1N4148
Q1: ZTX-849
*1% METAL FILM
†
POLYSTYRENE
15k
Q1
360k
3.6M TYP
SELECT FOR 100Hz
AT V
IN
= 0.025V
10M
39k
100pF
†
1/2
LT1495
6µA, A
V
= 1000, Chopper Stabilized Amplifier
0.2µF
5V
φ1
INPUT
φ2
1µF
+
1M
1/2
LT1495
1µF
φ2
–
– 5V
10M
φ1
10k
10M
φ1
5V
0.047µF
10M
10M
10
+
–
1/2
LTC1441
1/2
LTC1441
– 5V
φ2
–
OUTPUT
0kHz TO 10kHz
0.05µF
1M
–
1/2
LT1495
OUTPUT
+
10M
GAIN: 1000
OFFSET: 1µV
DRIFT: 50nV/°C
SUPPLY CURRENT: 5.5µA
BANDWIDTH: 0.2Hz
CLOCK RATE: 4Hz
CD4016 QUAD
1495 TA08
+
+
–
+
U
3.9M
20M
5V
1.2
REFERENCE
LTC1440
0V – 2.5V = 0kHz – 10kHz
SUPPLY CURRENT = 6.2µA QUIESCENT
= 13.3
µA
AT f = 10kHz
LINEARITY:
±
0.03%
PSRR (4.4V TO 36V): 10ppm/V
TEMPERATURE DRIFT: 250ppm/°C
1495 TA07
10k
+
–
LINER [ LINEAR TECHNOLOGY ]
