- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄39419 > LTC2380HMS-16#TRPBF (LINEAR TECHNOLOGY CORP) SUCCESSIVE APPROXIMATION ADC, PDSO16 PDF資料下載
參數(shù)資料
| 型號： | LTC2380HMS-16#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | SUCCESSIVE APPROXIMATION ADC, PDSO16 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-16 |
| 文件頁數(shù)： | 2/24頁 |
| 文件大?。?/td> | 545K |
| 代理商： | LTC2380HMS-16#TRPBF |
LTC2380-16
10
238016f
OVERVIEW
TheLTC2380-16isalownoise,lowpower,highspeed16-bit
successive approximation register (SAR) ADC. Operating
from a single 2.5V supply, the LTC2380-16 supports a
large and flexible ±VREF fully differential input range with
VREF ranging from 2.5V to 5.1V, making it ideal for high
performance applications which require a wide dynamic
range. The LTC2380-16 achieves ±0.6LSB INL max, no
missing codes at 16-bits and 96.2dB SNR.
Fast 2Msps throughput with no cycle latency makes the
LTC2380-16 ideally suited for a wide variety of high speed
applications.Aninternaloscillatorsetstheconversiontime,
easing external timing considerations. The LTC2380-16
dissipatesonly19mWat2Msps,whileanautopower-down
feature is provided to further reduce power dissipation
during inactive periods.
The LTC2380-16 features a unique digital gain compres-
sion(DGC)function,whicheliminatesthedriveramplifier’s
negative supply while preserving the full resolution of the
ADC. When enabled, the ADC performs a digital scaling
function that maps zero-scale code from 0V to 0.1 VREF
and full-scale code from VREF to 0.9 VREF. For a typical
reference voltage of 5V, the full-scale input range is now
0.5V to 4.5V, which provides adequate headroom for
powering the driving amplifier from a single 5.5V supply.
CONVERTER OPERATION
The LTC2380-16 operates in two phases. During the ac-
quisition phase, the charge redistribution capacitor D/A
converter (CDAC) is connected to the IN+ and IN– pins
to sample the differential analog input voltage. A rising
edge on the CNV pin initiates a conversion. During the
conversionphase,the16-bitCDACissequencedthrougha
successiveapproximationalgorithm,effectivelycomparing
the sampled input with binary-weighted fractions of the
referencevoltage(e.g.VREF/2,VREF/4…VREF/65536)using
the differential comparator. At the end of conversion, the
CDAC output approximates the sampled analog input. The
ADC control logic then prepares the 16-bit digital output
code for serial transfer.
applicaTions inForMaTion
Figure 2. LTC2380-16 Transfer Function
INPUT VOLTAGE (V)
0V
OUTPUT
CODE
(TWO’S
COMPLEMENT)
–1
LSB
238016 F02
011...111
011...110
000...001
000...000
100...000
100...001
111...110
1
LSB
BIPOLAR
ZERO
111...111
FSR/2 – 1LSB
–FSR/2
FSR = +FS – –FS
1LSB = FSR/65536
TRANSFER FUNCTION
The LTC2380-16 digitizes the full-scale voltage of 2 × REF
into 216 levels, resulting in an LSB size of 152V with
REF = 5V. The ideal transfer function is shown in Figure 2.
The output data is in 2’s complement format.
RON
40
CIN
45pF
RON
40
REF
CIN
45pF
IN+
IN–
BIAS
VOLTAGE
238016 F03
Figure 3. The Equivalent Circuit for the
Differential Analog Input of the LTC2380-16
ANALOG INPUT
The analog inputs of the LTC2380-16 are fully differential
in order to maximize the signal swing that can be digitized.
The analog inputs can be modeled by the equivalent circuit
shown in Figure 3. The diodes at the input provide ESD
protection. In the acquisition phase, each input sees ap-
proximately 45pF (CIN) from the sampling CDAC in series
with 40 (RON) from the on-resistance of the sampling
switch. Any unwanted signal that is common to both
inputs will be reduced by the common mode rejection of
the ADC. The inputs draw a current spike while charging
the CIN capacitors during acquisition. During conversion,
the analog inputs draw only a small leakage current.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC2380HMS-16#PBF | SUCCESSIVE APPROXIMATION ADC, PDSO16 |
| LTC2381CDE-16#TRPBF | 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| LTC2381CMS-16#PBF | 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| LTC2381HMS-16#PBF | 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| LTC2381IMS-16#PBF | 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2380IDE-16#PBF | 功能描述:IC ADC 16BIT 2MSPS 16DFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個單端，單極；2 個差分，單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
| LTC2380IDE-16#TRPBF | 功能描述:IC ADC 16BIT 2MSPS 16-DFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個單端，雙極 |
| LTC2380IMS-16#PBF | 功能描述:IC ADC 16BIT 2MSPS 16-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:- 其它有關(guān)文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個單端，單極；2 個差分，單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
| LTC2380IMS-16#PBF-ES | 制造商:Linear Technology 功能描述:ADC Single SAR 2Msps 16-bit Serial 16-Pin MSOP |
| LTC2380IMS-16#TRPBF | 功能描述:IC ADC 16BIT 2MSPS 16-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:- 標準包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個單端，雙極 |
發(fā)布緊急采購，3分鐘左右您將得到回復。