Datasheet

12
LT1494/LT1495/LT1496
TYPICAL APPLICATIONS N
U
13µA, 0kHz to 10kHz Voltage to Frequency Converter
–
+
1/2
LT1495
–
+
1/2
LT1495
5V
5V
1.2
REFERENCE
LTC1440
0V – 2.5V = 0kHz – 10kHz
SUPPLY CURRENT = 6.2µA QUIESCENT
= 13.3µA AT f = 10kHz
LINEARITY: ±0.03%
PSRR (4.4V TO 36V): 10ppm/V
TEMPERATURE DRIFT: 250ppm/°C
1µF
0.0082µF
1N5712
1N4148
Q1: ZTX-849
*1% METAL FILM
†
POLYSTYRENE
360k
100k
562k*
V
IN
0V TO 2.5V
3.9M
270k
10M*
390Ω
12pF
OUTPUT
0kHz TO 10kHz
3.6M TYP
SELECT FOR 100Hz
AT V
IN
= 0.025V
3.9M*
20M
+
–
+
LTC
®
1440
100pF
†
0.05µF
39k 10M
1495 TA07
Q1
15k
–
+
1/2
LT1495
–
+
1/2
LT1495
10M
1µF
5V
–5V
5V
–5V
φ2
φ1
φ2
φ1
10k
10M
GAIN: 1000
OFFSET: 1µV
DRIFT: 50nV/°C
SUPPLY CURRENT: 5.5µA
BANDWIDTH: 0.2Hz
CLOCK RATE: 4Hz
OUTPUT
10k
1M
1495 TA08
1M
1µF
INPUT
φ1
φ2
0.2µF
–
+
1/2
LTC1441
–
+
1/2
LTC1441
10M
10M
10M
0.047µF
CD4016 QUAD
6µA, A
V
= 1000, Chopper Stabilized Amplifier