- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377740 > LTC1291BIJ8 (LINEAR TECHNOLOGY CORP) PV74L16-8P PDF資料下載
參數(shù)資料
| 型號： | LTC1291BIJ8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | PV74L16-8P |
| 中文描述： | 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP8 |
| 封裝： | CERDIP-8 |
| 文件頁數(shù)： | 14/20頁 |
| 文件大?。?/td> | 376K |
| 代理商： | LTC1291BIJ8 |
14
LTC1291
U
S
A
O
PPLICATI
IU
U
ANALOG CONSIDERATIONS
Grounding
The LTC1291 should be used with an analog ground plane
and single point grounding techniques. Do not use wire
wrapping techniques to breadboard and evaluate the device.
To achieve the optimum performance use a PC board. The
ground pin (Pin 4) should be tied directly to the ground
plane with minimum lead length. Figure 4 shows an
example of an ideal LTC1291 ground plane for a two-sided
board. Of course this much ground plane will not always
be possible, but users should strive to get as close to this
ideal as possible.
HORIZONTAL: 10
μ
s/DIV
Analog Inputs
Because of the capacitive redistribution A/D conversion
techniques used, the analog inputs of the LTC1291 have
capacitive switching input current spikes. These current
spikes settle quickly and do not cause a problem. If large
source resistances are used or if slow settling op amps
drive the inputs, take care to insure the transients caused
by the current spikes settle completely before the
conversion begins.
CS
V
CC
Minimizing Gain and Offset Error
Because the LTC1291’s reference is taken from the power
supply pin (V
CC
) proper PC board layout and supply
bypassing is important for attaining the best performance
from the A/D converter. Any parasitic resistance in the V
CC
Figure 4. Example Ground Plane for the LTC1291
Bypassing
For good performance, V
CC
must be free of noise and
ripple. Any changes in the V
CC
voltage with respect to
ground during the conversion cycle can induce error or
noise in the output code. V
CC
noise and ripple can be kept
below 0.5mV by bypassing the V
CC
pin directly to the
analog ground plane with a minimum of 22
μ
F tantalum
capacitor and with leads as short as possible. A 0.1
μ
F
ceramic disk capacitor should also be placed directly
across V
CC
(Pin 8) and GND (Pin 4) as close to the pins as
possible. The V
CC
supply should have a low output
impedance such as that obtained from a voltage regulator
(e.g., LT323A). Figures 5 and 6 show the effects of good
and poor V
CC
bypassing.
V
V
HORIZONTAL: 10
μ
s/DIV
Figure 5. Poor V
CC
Bypassing. Noise and
Ripple Can Cause A/D Errors
Figure 6. Good V
CC
Bypassing Keeps
Noise and Ripple on V
CC
Below 1mV
1
2
3
4
5
6
7
8
LTC1291
22μF
TANTALUM
V
CC
LTC1291 F04
0.1
μ
F
ANALOG GROUND
PLANE
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1291CCN8 | Single Chip 12-Bit Data Acquisition System |
| LTC1291DCN8 | Single Chip 12-Bit Data Acquisition System |
| LTC1291DIJ8 | Single Chip 12-Bit Data Acquisition System |
| LTC1291 | Single Chip 12-Bit Data Acquisition System |
| LTC1291BC | Single Channel Codec W/Master-Slave Function (3 Slaves) and 89 dB SNR 48-LQFP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1291CCN8 | 功能描述:IC DATA ACQ SYSTEM 12BIT 8-DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| LTC1291CCN8#PBF | 功能描述:IC DATA ACQ SYSTEM 12BIT 8-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| LTC1291DCN8 | 功能描述:IC DATA ACQ SYSTEM 12BIT 8-DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| LTC1291DCN8#PBF | 功能描述:IC DATA ACQ SYSTEM 12BIT 8-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓模塊:Data Converter Basics 標準包裝:1 系列:- 類型:電機控制 分辨率（位）:12 b 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，并聯(lián) 電壓電源:單電源 電源電壓:2.7 V ~ 3.6 V，4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:100-TQFP 供應商設備封裝:100-TQFP（14x14） 包裝:剪切帶 (CT) 其它名稱:296-18373-1 |
| LTC1291DMJ8/883 | 制造商:Linear Technology 功能描述:ADC Single SAR 54ksps 12-bit Serial 8-Pin CDIP 制造商:Linear Technology 功能描述:Single ADC SAR 54ksps 12-bit Serial 8-Pin CDIP |
發(fā)布緊急采購，3分鐘左右您將得到回復。