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參數(shù)資料
| 型號： | LM12L454CIV |
| 英文描述： | IC-SM-12 BIT DAS |
| 中文描述： | 集成電路的Sm - DAS的12位 |
| 文件頁數(shù)： | 29/36頁 |
| 文件大?。?/td> | 538K |
| 代理商： | LM12L454CIV |
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6.0 Application Circuits
(Continued)
TL/H/11711–24
Note:
The layout utilizes a split ground plane. The analog ground plane is placed under all analog signals and U5 pins 1, 34–44. The remaining signals and pins are
placed over the digital ground. The single point ground connection is at U6, pin 2, and this is connected to the motherboard pin B1.
Parts List:
Y1
HC49U, 8 MHz crystal
D1
1N4002
L1
33
m
H
DB37F; parallel connector
P1
R1
10 M
X
, 5%,
(/4
W
2 k
X
, 5%,
(/4
W
10 k
X
, 6 resistor SIP, 5%,
(/8
W
R2
RN1
JP1, JP2 HX3, 3-pin jumper
S1
SW DIP-8; 8 SPST switches
C1–3, C6, C9–11,
C19, C22 0.1
m
F, 50V, monolithic
ceramic
C4
68 pF, 50V, ceramic disk
C5
15 pF, 50V, ceramic disk
C7, C21
100
m
F, 25V, electrolytic
C8, C12,
C20
10
m
F, 35V, electrolytic
C13, C16 0.01
m
F, 50V, monolithic
ceramic
C14, C18 1
m
F, 35V, tantalum
C15, C17 100
m
F, 50V, ceramic disk
U1
MM74HCT244N
U2
GAL16V8-20LNC
U3
MM74HCT245N
U4
MM74HCU04N
U5
LM12H458CIV
LM12H454CIV
or
U6
LM340AT-5.0
SK1
44-pin PLCC socket
A1
LM12H458/4 Rev. D PC
Board
FIGURE 13. Schematic and Parts List for the LM12(H)454/8 Evaluation/Interface
Board for XT and AT Style Computers, Order Number LM12458EVAL
29
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM12L458 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:12-Bit + Sign Data Acquisition System with Self-Calibration |
| LM12L458_06 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:12-Bit + Sign Data Acquisition System with Self-Calibration |
| LM12L458CIV | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| LM12L458CIV/NOPB | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| LM12L458CIVF | 制造商:Rochester Electronics LLC 功能描述:12-BIT PARALLEL I/O DAS - Bulk |
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