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參數(shù)資料
| 型號： | LTC2440IGN |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 24-Bit High Speed Differential delta-sigma ADC with Selectable Speed/Resolution |
| 中文描述： | 1-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SSOP-16 |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 316K |
| 代理商： | LTC2440IGN |
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LTC2440
1
sn2440, 2440fas
The LTC
2440 is a high speed 24-bit No Latency
Σ
TM
ADC
with 5ppm INL and 5
μ
V offset. It uses proprietary delta-
sigma architecture enabling variable speed and resolution
with no latency. Ten speed/resolution combinations (6.9Hz/
200nV
RMS
to 3.5kHz/25
μ
V
RMS
) are programmed through
a simple serial interface. Alternatively, by tying a single pin
HIGH or LOW, a fast (880Hz/2
μ
V
RMS
) or ultralow noise
(6.9Hz, 200nV
RMS
, 50/60Hz rejection) speed/resolution
combination can be easily selected. The accuracy (offset,
full-scale, linearity, drift) and power dissipation are inde-
pendent of the speed selected. Since there is no latency,
a speed/resolution change may be made between conver-
sions with no degradation in performance.
Following each conversion cycle, the LTC2440 automati-
cally enters a low power sleep state. Power dissipation
may be reduced by increasing the duration of this sleep
state. For example, running at the 3.5kHz conversion
speed but reading data at a 100Hz rate draws 240
μ
A
average current (1.1mW) while reading data at a 7Hz
output rate draws only 25
μ
A (125
μ
W).
The LTC2440 com-
municates through a flexible 3-wire or 4-wire digital inter-
face that is compatible with the LTC2410 and is available
in a narrow 16-lead SSOP package.
■
High Speed Multiplexing
■
Weight Scales
■
Auto Ranging 6-Digit DVMs
■
Direct Temperature Measurement
■
High Speed Data Acquisition
, LTC and LT are registered trademarks of Linear Technology Corporation.
No Latency
Σ
is a trademark of Linear Technology Corporation.
■
Up to 3.5kHz Output Rate
■
Selectable Speed/Resolution
■
2
μ
V
RMS
Noise at 880Hz Output Rate
■
200nV
RMS
Noise at 6.9Hz Output Rate with
Simultaneous 50/60Hz Rejection
■
0.0005% INL, No Missing Codes
■
Autosleep Enables 20
μ
A Operation at 6.9Hz
■
<5
μ
V Offset (4.5V < V
CC
< 5.5V, –40
°
C to 85
°
C)
■
Differential Input and Differential Reference with
GND to V
CC
Common Mode Range
■
No Latency, Each Conversion is Accurate Even After
an Input Step
■
Internal Oscillator—No External Components
■
Pin Compatible with the LTC2410
■
24-Bit ADC in Narrow 16-Lead SSOP Package
APPLICATIU
24-Bit High Speed
Differential
Σ
ADC with
Selectable Speed/Resolution
DESCRIPTIO
U
Speed vs RMS Noise
Simple 24-Bit 2-Speed Acquisition System
2
15
3
13
12
5
6
11
10
2440 TA01
2440 TA01
14
7
1, 8, 9, 16
REFERENCE VOLTAGE
0.1V TO V
CC
ANALOG INPUT
–0.5V
REF
TO 0.5V
REF
3-WIRE
SPI INTERFACE
6.9Hz, 200nV NOISE,
50/60Hz REJECTION
880Hz OUTPUT RATE,
2
μ
V NOISE
10-SPEED SERIAL
PROGRAMMABLE
V
CC
4.5V TO 5.5V
4
V
CC
BUSY
F
O
REF
+
SCK
IN
+
IN
–
SDO
GND
CS
EXT
SDI
LTC2440
REF
–
CONVERSION RATE (Hz)
1
0.1
R
μ
V
1
10
100
10
100
2440 TA02
1000
10000
V
CC
= 5V
V
= 5V
V
REF
= V
IN–
= 0V
2
μ
V AT 880Hz
200nV AT 6.9Hz
(50/60Hz REJECTION)
FEATURES
TYPICAL APPLICATIO
U
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2440IGN#PBF | 功能描述:IC ADC DIFFER 24-BIT HS 16-SSOP 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 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| LTC2440IGN#PBF | 制造商:Linear Technology 功能描述:A/D Converter (A-D) IC 制造商:Linear Technology 功能描述:IC, ADC, 24BIT, 3.5KHZ, SSOP-16 |
| LTC2440IGN#TR | 功能描述:IC CONV A/D 24-BIT DIFF 16-SSOP 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 個單端，單極 |
| LTC2440IGN#TRPBF | 功能描述:IC ADC DIFFER 24-BIT HS 16-SSOP 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 個單端，單極 |
| LTC2440IGNPBF | 制造商:Linear Technology 功能描述:24-Bit Diff. ADC Speed/Resolution SSOP16 |
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