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參數(shù)資料
| 型號： | LTC2440CGN |
| 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)： | 25/28頁 |
| 文件大小： | 316K |
| 代理商： | LTC2440CGN |
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LTC2440
25
sn2440, 2440fas
APPLICATIU
W
U
U
combinations of oversample ratio and clock frequency.
Understanding these properties is the key to fine tuning
the characteristics of the LTC2440 to the application.
Maximum Conversion Rate
The maximum conversion rate is the fastest possible rate
at which conversions can be performed.
First Notch Frequency
This is the first notch in the SINC
4
portion of the digital
filter and depends on the f
o
clock frequency and the
oversample ratio. Rejection at this frequency and its
multiples (up to the modulator sample rate of 1.8MHz)
exceeds 120dB. This is 8 times the maximum conversion
rate.
Effective Noise Bandwidth
The LTC2440 has extremely good input noise rejection
from the first notch frequency all the way out to the
modulator sample rate (typically 1.8MHz). Effective noise
bandwidth is a measure of how the ADC will reject wideband
input noise up to the modulator sample rate. The example
on the following page shows how the noise rejection of the
LTC2440 reduces the effective noise of an amplifier driv-
ing its input.
Table 6
Oversample Ratio
(OSR)
ADC
Noise*
ENOB
(V
REF
= 5V)*
Maximum Conversion Rate
Internal
9MHz clock
3515.6
1757.8
878.9
439.5
219.7
109.9
54.9
27.5
13.7
6.9
First Notch Frequency
Internal
9MHz clock
28125
14062.5
7031.3
3515.6
1757.8
878.9
439.5
219.7
109.9
54.9
Effective Noise BW
Internal
9MHz clock
3148
1574
787
394
197
98.4
49.2
24.6
12.4
6.2
–3dB point(Hz)
Internal
9MHz clock
1696
848
424
212
106
53
26.5
13.2
6.6
3.3
External
f
o
F
o
/2560
F
o
/5120
F
o
/10240
F
o
/20480
F
o
/40960
F
o
/81920
F
o
/163840
F
o
/327680
F
o
/655360
F
o
/1310720
External
f
o
F
o
/320
F
o
/640
F
o
/1280
F
o
/2560
F
o
/5120
F
o
/1020
F
o
/2050
F
o
/4100
F
o
/8190
F
o
/16380
External
f
o
F
o
/2850
F
o
/5700
F
o
/11400
F
o
/22800
F
o
/45700
F
o
/91400
F
o
/183000
F
o
/366000
F
o
/731000
F
o
/1463000
External
f
o
F
o
/5310
F
o
/10600
F
o
/21200
F
o
/42500
F
o
/84900
F
o
/170000
F
o
/340000
F
o
/679000
F
o
/1358000
F
o
/2717000
64
128
256
512
1024
2048
4096
8192
16384
32768
23
μ
V
3.5
μ
V
2
μ
V
1.4
μ
V
1
μ
V
750nV
510nV
375nV
250nV
200nV
17
20
21.3
21.8
22.4
22.9
23.4
24
24.4
24.6
*ADC noise increases by approximately
√
2 when OSR is decreased by a factor of 2 for OSR 32768 to OSR 256. The ADC noise at OSR 128 and OSR 64
include effects from internal modulator quantization noise.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2440CGN#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(gè)單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| LTC2440CGN#PBF | 制造商:Linear Technology 功能描述:24BIT ADC DELTA SIG HS 16SSOP 制造商:Linear Technology 功能描述:24BIT ADC, DELTA SIG, HS, 16SSOP |
| LTC2440CGN#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(gè)單端，單極 |
| LTC2440CGN#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(gè)單端，單極 |
| LTC2440CGNPBF | 制造商:Linear Technology 功能描述:ADC,LTC2440C 24bit diff D-S SPI SSOP |
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