參數(shù)資料
型號: LTC2421
廠商: Linear Technology Corporation
英文描述: 1-/2-Channel 20-Bit UPower No Latency ADCs in MSOP-10
中文描述: 1-/2-Channel 20位ADC的無延遲UPower采用MSOP - 10
文件頁數(shù): 32/32頁
文件大?。?/td> 375K
代理商: LTC2421
32
LTC2421/LTC2422
24212f
LT/TP 0202 2K PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2002
RELATED PARTS
PART NUMBER
LT1019
LTC1050
LT1236A-5
LTC1391
LT1461-2.5
LTC1535
LTC2400
LTC2401/LTC2402
LTC2404/LTC2408
LTC2413
LTC2415
LTC2420
LTC2424/LTC2428
LTC2430
LTC2431
DESCRIPTION
Precision Bandgap Reference, 2.5V, 5V
Precision Chopper Stabilized Op Amp
Precision Bandgap Reference, 5V
8-Channel Multiplexer
Precision Micropower Voltage Reference
Isolated RS485 Transceiver
24-Bit, No Latency
Σ
ADC in SO-8
1-/2-Channel, 24-Bit, No Latency
Σ
ADC in MSOP
4-/8-Channel, 24-Bit, No Latency
Σ
ADC
24-Bit, No Latency
Σ
ADC
24-Bit, Fully Differential, No Latency
Σ
ADC
20-Bit, No Latency
Σ
ADC in SO-8
4-/8-Channel, 20-Bit, No Latency
Σ
ADC
20-Bit, Fully Differential, No Latency
Σ
ADC in SSOP-16
24-Bit, Fully Differential, No Latency
Σ
ADC in MS10
COMMENTS
3ppm/
°
C Drift, 0.05% Max
No External Components 5
μ
V Offset, 1.6
μ
V
P-P
Noise
0.05% Max, 5ppm/
°
C Drift
Low R
ON
: 45
, Low Charge Injection Serial Interface
50
μ
A Supply Current, 3ppm/
°
C Drift
2500V
RMS
Isolation
4ppm INL, 10ppm Total Unadjusted Error, 200
μ
A
0.6ppm Noise, 4ppm INL, Pin Compatible with the LTC2421/LTC2422
4ppm INL, 10ppm Total Unadjusted Error, 200
μ
A
Simultaneous 50Hz and 60Hz Rejection, 0.16ppm Noise
15Hz Output Rate at 60Hz Rejection, Pin Conpatible with the LTC2410
1.2ppm Noise, 8ppm INL, Pin Compatible with LTC2400
1.2ppm Noise, 8ppm INL, Pin Compatible with LTC2404/LTC2408
0.16ppm Noise, 2ppm INL, 10ppm Total Unadjusted Error, 200
μ
A
0.29ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200
μ
A
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
G
FAX: (408) 434-0507
G
www.linear.com
TYPICAL APPLICATIO
Figure 37 shows the block diagram of a demo circuit
(contact LTC for a demonstration) of a multichannel
isolated temperature measurement system. This circuit
decodes an address to select which LTC2422 receives a
24-bit burst of SCK signal. All devices independently
U
convert either the thermal couple output or the thermistor
cold junction output. After each conversion, the devices
enter their sleep state and wait for the SCK signal before
clocking out data and beginning the next conversion.
V
CC
FS
SET
CH1
CH0
SDO
SCK
ZS
SET
LTC2422
A
Y
D1
RE
R0
LTC1535
V
CC
FS
SET
CH1
CH0
SDO
SCK
2500V
ZS
SET
LTC2422
A
Y
D1
RE
R0
LTC1535
V
CC
FS
SET
CH1
CH0
SDO
SCK
24212 F37
ZS
SET
LTC2422
A
Y
D1
HC138
HC595
ADDRESS
LATCH
RE
R0
LTC1535
SEE FIGURE 34 FOR
THE COMPLETE CIRCUIT
HC138
SCK
SD0
D
IN
(ADDRESS
OR COUNTER)
+
Figure 37. Mulitchannel Isolated Temperature Measurement System
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