
36
LTC2424/LTC2428
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC2400 24-Bit µPower, No Latency ∆Σ ADC in SO-8 4ppm INL, 10ppm TUE, 200µA, Pin Compatible with LTC2420
LTC2401/LTC2402 1-/2-Channel, 24-Bit No Latency ∆Σ ADCs 24 Bits in MSOP Package
LTC2410 24-Bit No Latency ∆Σ ADC with Differential Inputs 800nV Noise, Differential Reference, 2.7V to 5.5V Operation
LTC2411 24-Bit No Latency ∆Σ ADC with Differential Inputs/Reference 1.6µV Noise, Fully Differential, 10-Lead MSOP Package
LTC2413 24-Bit No Latency ∆Σ ADC Simultaneous 50Hz to 60Hz Rejection 0.16ppm Noise
LTC2404/LTC2408 4/8 Channel, 24-Bit ∆Σ ADCs <4ppm INL, No Missing Codes
LTC2420 20-Bit No Latency ∆Σ ADC Fast Mode Allows 100sps, Low Cost
Fiugre 36. Measure DC to Daylight Using the LTC2428
TYPICAL APPLICATION
U
LINEAR TECHNOLOGY CORPORATION 2000
24248f LT/TP 0201 4K • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear-tech.com
24248 F36
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
9
10
11
12
13
14
15
17
+
–
8-CHANNEL
MUX
5ZS
SET
GND
1, 6, 16, 18, 22, 27, 28
MPU
SERIAL DATA LINK
MICROWIRE AND
SPI COMPATABLE
LT1236CS8-5
23
20
19, 25
21
24
CSADC
CSMUX
CLK
D
IN
SDO
26
F
O
20-BIT
∆Σ ADC
LTC2428
ADCINMUXOUT
7 4 3 2, 8
1µF
5V
FS
SET
V
CC
–
+
OUT IN
GND
+
4
26
0V TO 5V
100µF
INTERNAL OSC
SELECTED FOR
60Hz REJECTION
+
10µF
8V
5V
REF
ELECTROMETER
INPUT
(pH, PIEZO)
5V
GUARD RING
DC
VOLTMETER
INPUT
1mV TO 1000V
–5V
R3, 10k
5V
MAX
C1, 0.1µF
LT1793
3
2
6
4
7
+
–
+
5V
–5V
LTC1050
2
3
6
7
4
R4
1k
R9
1k
1%
+
R7
10k, 0.1%
R5
5k, 1%
R8
100Ω, 5%
3-WIRE R-PACK
R6
10k, 0.1%
IN914 IN914
1µF
AC
INPUT
60Hz
60Hz–RF
RF POWER
R1
900k
0.1%, 1W, 1000 WVDC
R2
4.7k
0.1%
50Ω
R13
5k
0.1%
5V
DAYLIGHT
HAMAMATSU
PHOTODIODE
S1336-5BK
100Ω
Pt RTD
(3-WIRE)
RT
FORCE SENSE
INFRARED
INFRARED
THERMOCOUPLE
OMEGA
0S36-01
V
REF
5V
50Ω LOAD
BONDED TO
RTD ON
INSULATED
MOUNTING
R11
24.9k, 0.1%
J1
J2
J3
V
REF
5V
THERMISTOR
10kΩ NTC
LOCAL
TEMP
R12
24.9k, 0.1%
R10
5k
1%
–60mV TO 4V
2.7V AT 0°C
0.9V AT 40°C
–2.2mV to 16mV
0V to 4V
20mV TO 80mV
<1mV
Comentarios a estos manuales