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參數(shù)資料
| 型號(hào)： | 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)： | 1/32頁 |
| 文件大?。?/td> | 375K |
| 代理商： | LTC2421 |
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1
LTC2421/LTC2422
24212f
1-/2-Channel 20-Bit
μ
Power
No Latency
Σ
TM
ADCs in MSOP-10
I
Weight Scales
I
Direct Temperature Measurement
I
Gas Analyzers
I
Strain Gauge Transducers
I
Instrumentation
I
Data Acquisition
I
Industrial Process Control
No Latency
Σ
is a trademark of Linear Technology Corporation.
MICROWIRE is a trademark of National Semiconductor Corporation.
Pseudo Differential Bridge Digitizer
, LTC and LT are registered trademarks of Linear Technology Corporation.
The LTC
2421/LTC2422 are 1- and 2-channel 2.7V to 5.5V
micropower 20-bit analog-to-digital converters with an
integrated oscillator, 8ppm INL and 1.2ppm RMS noise.
These ultrasmall devices use delta-sigma technology and
a new digital filter architecture that settles in a single cycle.
This eliminates the latency found in conventional
Σ
converters and simplifies multiplexed applications.
Through a single pin, the LTC2421/LTC2422 can be
configured for better than 110dB rejection at 50Hz or
60Hz
±
2%, or can be driven by an external oscillator for
a user defined rejection frequency in the range 1Hz to
120Hz. The internal oscillator requires no external fre-
quency setting components.
These converters accept an external reference voltage
from 0.1V to V
CC
. With an extended input conversion
range of –12.5% V
REF
to 112.5% V
REF
(V
REF
= FS
SET
–
ZS
SET
), the LTC2421/LTC2422 smoothly resolve the off-
set and overrange problems of preceding sensors or
signal conditioning circuits.
The LTC2421/LTC2422 communicate through a 2- or
3-wire digital interface that is compatible with SPI and
MICROWIRE
TM
protocols.
I
20-Bit ADCs in Tiny MSOP-10 Packages
I
1- or 2-Channel Inputs
I
Single Supply 2.7V to 5.5V Operation
I
Low Supply Current (200
μ
A) and Auto Shutdown
I
Automatic Channel Selection (Ping-Pong) (LTC2422)
I
No Latency: Digital Filter Settles in a
Single Conversion Cycle
I
8ppm INL, No Missing Codes
I
4ppm Full-Scale Error
I
0.5ppm Offset
I
1.2ppm Noise
I
Zero Scale and Full Scale Set for Reference
and Ground Sensing
I
Internal Oscillator—No External Components Required
I
110dB Min, 50Hz/60Hz Notch Filter
I
Reference Input Voltage: 0.1V to V
CC
I
Live Zero—Extended Input Range Accommodates
12.5% Overrange and Underrange
I
Pin Compatible with LTC2401/LTC2402
APPLICATIU
ANALOG INPUT RANGE
ZS
SET
– 0.12V
TO
FS
SET
+ 0.12V
REF
(V
REF
= FS
SET
– ZS
SET
)
V
CC
F
O
FS
SET
ZS
SET
SCK
CH1
SDO
GND
CS
REFERENCE VOLTAGE
ZS
SET
+ 0.1V TO V
CC
0V TO FS
SET
– 100mV
CH0
= INTERNAL OSC/50Hz REJECTION
= EXTERNAL CLOCK SOURCE
= INTERNAL OSC/60Hz REJECTION
3-WIRE
SPI INTERFACE
1
μ
F
1
10
9
8
7
6
2
3
4
5
2.7V TO 5.5V
LTC2422
24212 TA01
V
CC
V
CC
FS
SET
ZS
SET
SCK
CH0
SDO
F
O
CS
CH1
GND
LTC2422
3-WIRE
SPI INTERFACE
INTERNAL OSCILLATOR
60Hz REJECTION
1
9
2.7V TO 5.5V
8
7
10
6
24012TA02
2
4
3
5
DESCRIPTIOU
FEATURES
TYPICAL APPLICATIO
U
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC2422 | 1-/2-Channel 20-Bit UPower No Latency ADCs in MSOP-10 |
| LTUX | 1-/2-Channel 20-Bit UPower No Latency ADCs in MSOP-10 |
| LTUY | 1-/2-Channel 20-Bit UPower No Latency ADCs in MSOP-10 |
| LTUZ | 1-/2-Channel 20-Bit UPower No Latency ADCs in MSOP-10 |
| LTVA | 1-/2-Channel 20-Bit UPower No Latency ADCs in MSOP-10 |
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| LTC2421CMS | 功能描述:IC ADC 1CH 20BIT MICRPWR 10-MSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端，單極 |
| LTC2421CMS#PBF | 功能描述:IC ADC 1CH 20BIT MICRPWR 10-MSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端，單極 |
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