LTC1052/LTC7652
U
TYPICAL APPLICATIO S
No VOS Adjust* CMOS DAC Buffer—Single Supply
Air Flow Detector
15V
C *
F
10k
5V
5
15V
R
1k
FB
2
3
l
OUT1
+
7
100k
± 1%
6
12–BIT CMOS DAC
V
LTC1052
OUT
5
8
2
3
l
–
FOR HIGHER SPEED, REFER TO
“FAST PRECISION INVERTER”
UNDER TYPICAL APPLICATIONS
OUT2
+
4
7
1k
6
5V = NO AIR FLOW
0V = AIR FLOW
1
LT1004-1.2
LTC1052
15V
4
0.1µF
0.1µF
8
–
43.2Ω
± 1%
4
1
43k
0.1µF
0.1µF
6
5
–
AMBIENT
TEMPERATURE
STILL AIR
–
+
10k
240Ω
TYPE K
+
LTC1052/7652 • TA08
11
+
1µF
1N914
0.1µF
NON POLARIZED
*OFFSET VOLTAGE CAUSES
NONLINEARITY ERRORS.
SEE: “APPLICATION GUIDE
TO CMOS MULTIPLYING D/A
CONVERTERS,”
AIR FLOW
12
≈ – 0.5V
ANALOG DEVICES, INC.
LTC1052/7652 • TA07
1pF
1/2
16
LTC1043
17
1Hz to 30MHz Voltage-to-Frequency Converter
5V
120Ω
CURRENT
12k
SOURCE
STABILIZING
AMP
0.1µF
120Ω
3
7
+
7.5k
6
2N3906
LTC1052
2
8
NC
–
FET BUFFER
2N5486
4
1
RESET DIODE
2N3904
1Hz TO 30MHz
OUTPUT
0.1µF
0.1µF
5V
100pF
50Ω
74S132
0.0.1µF
– 5V
OUT
2k
30MHz
TRIM
2N5486
10k
0.22µF
16.2k*
5V
5V
IN
TRIGGER
HP5082-2810
50Ω
CHARGE
PUMP
OV TO 3V
2k
– 5V
8
7
100k
1000M
11
LT1004–1.2V
10k
1Hz TRIM
†
100pF
0.22µF
100k
– 5V
10
12
*TRW MTR-5/ + 120ppm/°C
†WESCO #32-P/ – 120ppm/°C
0.3Hz/°C ZERO-DRIFT
±0.08% LINEARITY
20ppm/°C GAIN DRIFT
150dB DYNAMIC RANGE
13
16
5V
5
5V
14
11
3
14
5
1/2
LTC1043
1/2 74S74
7
7490
10
1
12
1
LTC1052/7652 • TA09
1052fa
14
Linear [ Linear ]
