- 您現(xiàn)在的位置：買賣IC網 > PDF目錄2006 > LTC2483IDD#TRPBF (Linear Technology)IC ADC 16BIT I2C 10-DFN PDF資料下載
參數(shù)資料
| 型號： | LTC2483IDD#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 14/34頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 16BIT I2C 10-DFN |
| 標準包裝： | 2,500 |
| 位數(shù)： | 16 |
| 采樣率（每秒）： | 6.8 |
| 數(shù)據(jù)接口： | I²C，串行 |
| 轉換器數(shù)目： | 1 |
| 功率耗散（最大）： | 480µW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-WFDFN 裸露焊盤 |
| 供應商設備封裝： | 10-DFN（3x3） |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 1 個差分，雙極 |
| 配用： | DC955A-ND - BOARD DELTA SIGMA ADC LTC2483 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁當前第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁
LTC2483
2483fc
In addition to this gain error, the converter INL per-
formance is degraded by the reference source imped-
ance. The INL is caused by the input dependent terms
–VIN2/(VREF REQ) – (0.5 VREF DT)/REQ in the reference
pin current as expressed in Figure 7. When using internal
oscillator, every 100Ω of reference source resistance
translates into about 0.61ppm additional INL error. When
CA0/F0 is driven by an external oscillator with a frequency
fEOSC, every 100Ω of source resistance driving REF+ or
REF– translates into about 2.18 10–6 fEOSCppm ad-
ditional INL error. Figure 15 shows the typical INL error
due to the source resistance driving the REF+ or REF– pins
when large CREF values are used. The user is advised to
minimize the source impedance driving the REF+ and
REF– pins.
In applications where the reference and input common
mode voltages are different, extra errors are introduced.
For every 1V of the reference and input common mode
voltage difference (VREFCM – VINCM) and a 5V reference,
each ohm of reference source resistance introduces an
extra (VREFCM – VINCM)/(VREF REQ) full-scale gain error,
which is 0.067ppm when using internal oscillator. If an
applicaTions inFormaTion
external clock is used, the corresponding extra gain error
is 0.24 10–6 fEOSCppm.
The magnitude of the dynamic reference current depends
uponthesizeoftheverystableinternalsamplingcapacitors
andupontheaccuracyoftheconvertersamplingclock.The
accuracy of the internal clock over the entire temperature
andpowersupplyrangeistypicallybetterthan0.5%.Such
a specification can also be easily achieved by an external
clock. When relatively stable resistors (50ppm/°C) are
used for the external source impedance seen by REF+
and REF–, the expected drift of the dynamic current gain
error will be insignificant (about 1% of its value over the
entire temperature and voltage range). Even for the most
stringent applications a one-time calibration operation
may be sufficient.
In addition to the reference sampling charge, the refer-
ence pins ESD protection diodes have a temperature de-
pendent leakage current. This leakage current, nominally
1nA (±10nA max), results in a small gain error. A 100Ω
source resistance will create a 0.05V typical and 0.5V
maximum full-scale error.
Figure 15. INL vs Differential Input Voltage and
Reference Source Resistance for CREF > 1F
VIN/VREF (V)
–0.5
INL
(ppm
OF
V
REF
)
2
6
10
0.3
2483 F15
–2
–6
0
4
8
–4
–8
–10
–0.3
–0.1
0.1
0.5
VCC = 5V
VREF = 5V
VIN(CM) = 2.5V
TA = 25°C
CREF = 10F
R = 1k
R = 100
R = 500
相關PDF資料 |
PDF描述 |
|---|---|
| LTC2485CDD#TRPBF | IC ADC 24BIT I2C 10-DFN |
| LTC2487CDE#PBF | IC ADC 16BIT DELTA SIG 14-DFN |
| LTC2492IDE#TRPBF | IC ADC 24BIT DELTA SIG 14-DFN |
| LTC2493IDE#TRPBF | IC ADC 24BIT DELTA SIG 14-DFN |
| LTC2494IUHF#TRPBF | IC ADC 16BIT W/PGA 38-QFN |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2484CDD | 制造商:Linear Technology 功能描述:ADC Single Delta-Sigma 7.5sps 24-bit Serial 10-Pin DFN EP |
| LTC2484CDD#PBF | 功能描述:IC ADC 24BIT 10-DFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝: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 供應商設備封裝: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 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| LTC2484CDD#TR | 制造商:Linear Technology 功能描述:ADC Single Delta-Sigma 7.5sps 24-bit Serial 10-Pin DFN EP T/R |
| LTC2484CDD#TRPBF | 功能描述:IC ADC 24BIT 10-DFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉換器數(shù)目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤 供應商設備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)目和類型:16 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| LTC2484IDD | 制造商:Linear Technology 功能描述:ADC Single Delta-Sigma 7.5sps 24-bit Serial 10-Pin DFN EP |
發(fā)布緊急采購，3分鐘左右您將得到回復。