- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄39245 > LM12458MEL/883 (NATIONAL SEMICONDUCTOR CORP) PROPRIETARY METHOD ADC, PQCC44 PDF資料下載
參數(shù)資料
| 型號(hào)： | LM12458MEL/883 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | ADC |
| 英文描述： | PROPRIETARY METHOD ADC, PQCC44 |
| 封裝： | EL44A |
| 文件頁數(shù)： | 1/43頁 |
| 文件大?。?/td> | 991K |
| 代理商： | LM12458MEL/883 |
當(dāng)前第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頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁
LM12454/LM12458/LM12H458
12-Bit + Sign Data Acquisition System with
Self-Calibration
General Description
The LM12454, LM12458, and LM12H458 are highly inte-
grated Data Acquisition Systems. Operating on just 5V, they
combine a fully-differential self-calibrating (correcting linear-
ity and zero errors) 13-bit (12-bit + sign) analog-to-digital
converter (ADC) and sample-and-hold (S/H) with extensive
analog functions and digital functionality. Up to 32 consecu-
tive conversions, using two’s complement format, can be
stored in an internal 32-word (16-bit wide) FIFO data buffer.
An internal 8-word RAM can store the conversion sequence
for up to eight acquisitions through the LM12(H)458’s
eight-input multiplexer. The LM12454 has a four-channel
multiplexer, a differential multiplexer output, and a differential
S/H input. The LM12454 and LM12(H)458 can also operate
with 8-bit + sign resolution and in a supervisory “watchdog”
mode that compares an input signal against two program-
mable limits.
Programmable acquisition times and conversion rates are
possible through the use of internal clock-driven timers. The
reference voltage input can be externally generated for ab-
solute or ratiometric operation or can be derived using the in-
ternal 2.5V bandgap reference.
All registers, RAM, and FIFO are directly addressable
through the high speed microprocessor interface to either an
8-bit or 16-bit databus. The LM12454 and LM12(H)458 in-
clude
a
direct
memory
access
(DMA)
interface
for
high-speed conversion data transfer.
An evaluation/interface board is available. Order num-
ber LM12458EVAL.
Additional applications information can be found in applica-
tions notes AN-906, AN-947 and AN-949.
Key Specifications
(f
CLK = 5 MHz; 8 MHz, H)
j Resolution
12-bit + sign or 8-bit + sign
j 13-bit conversion time
8.8 s, 5.5 s (H) (max)
j 9-bit conversion time
4.2 s, 2.6 s (H) (max)
j 13-bit Through-put rate
88k samples/s (min),
140k samples/s (H) (min)
j Comparison time
(“watchdog” mode)
2.2 s (max),
1.4 s (H) (max)
j ILE
±1 LSB (max)
j V
IN range
GND to V
A
+
j Power dissipation
30 mW, 34 mW (H) (max)
j Stand-by mode
50 W (typ)
j Single supply
3V to 5.5V
Features
n Three operating modes: 12-bit + sign, 8-bit + sign, and
“watchdog”
n Single-ended or differential inputs
n Built-in Sample-and-Hold and 2.5V bandgap reference
n Instruction RAM and event sequencer
n 8-channel (LM12(H)458), 4-channel (LM12454)
multiplexer
n 32-word conversion FIFO
n Programmable acquisition times and conversion rates
n Self-calibration and diagnostic mode
n 8- or 16-bit wide databus dmicroprocessor or DSP
interface
Applications
n Data Logging
n Instrumentation
n Process Control
n Energy Management
n Inertial Guidance
TRI-STATE is a registered trademark of National Semiconductor Corporation.
AT is a registered trademark of International Business Machines Corporation.
July 1999
LM12454/LM12458/LM12H458
12-Bit
+
Sign
Data
Acquisition
System
with
Self-Calibration
1999 National Semiconductor Corporation
DS011264
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 5962-9319501MYA | SPECIALTY ANALOG CIRCUIT, PQCC44 |
| LM12H458MWG-MCP | SPECIALTY ANALOG CIRCUIT, CDFP44 |
| LM12H458MWG/883 | SPECIALTY ANALOG CIRCUIT, CDFP44 |
| LM1262NA/NOPB | 3 CHANNEL, VIDEO PREAMPLIFIER, PDIP24 |
| LM129BH/883 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 6.9 V, MBCY2 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM12458MW/883 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single-Ended Data Acquisition System |
| LM1246 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs |
| LM1246AAA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs |
| LM1246AAC/NA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:IC 150MHZ RGB PREAMP 1246 DIP24 |
| LM1246AAC/NA/NOPB | 功能描述:IC PREAMP RGB 150MHZ 24-DIP RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標(biāo)準(zhǔn)包裝:3,000 系列:OMNITUNE™ 類型:調(diào)諧器 應(yīng)用:移動(dòng)電話，手機(jī)，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應(yīng)商設(shè)備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。