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參數(shù)資料
| 型號： | MAX1294BEEI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | 420ksps, +5V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| 中文描述： | 6-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28 |
| 封裝： | 0.150 INCH, 0.025 INCH PITCH, QSOP-28 |
| 文件頁數(shù)： | 16/20頁 |
| 文件大?。?/td> | 226K |
| 代理商： | MAX1294BEEI |
M
420ksps, +5V, 6-/2-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
16
______________________________________________________________________________________
acquisition or conversion can cause additional supply-
noise, which may make it difficult to achieve true 12-bit
performance.
Layout, Grounding, and Bypassing
For best performance, use printed circuit boards. Wire-
wrap configurations are not recommended, since the
layout should ensure proper separation of analog and
digital traces. Do not run analog and digital lines paral-
lel to each other, and don’t lay out digital signal paths
underneath the ADC package. Use separate analog
and digital PC board ground sections with only one
“star point” (Figure 11) connecting the two ground sys-
ensure the ground return to the star ground’s power
supply is low impedance and as short as possible.
Route digital signals far away from sensitive analog and
reference inputs.
High-frequency noise in the power supply, V
DD
, could
impair operation of the ADC’s fast comparator. Bypass
V
DD
to the star ground with a network of two parallel
capacitors, 0.1μF and 4.7μF, located as close to the
MAX1294/MAX1296’s power-supply pin as possible.
Minimize capacitor lead length for best supply-noise
rejection and add an attenuation resistor (5
) if the
power supply is extremely noisy.
Figure 10. Timing Diagram for Fastest Conversion
Figure 11. Power-Supply and Grounding Connections
+5V
+5V
GND
SUPPLIES
DGND
+5V
COM
GND
4.7
μ
F
0.1
μ
F
V
DD
DIGITAL
CIRCUITRY
MAX1294
MAX1296
R* = 5
*OPTIONAL
CLK
ACQUISITION
CONTROL WORD
CONVERSION
D11–D0
ACQUISITION
SAMPLING INSTANT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
WR
RD
D7–D0
STATE
CONTROL
WORD
D11–
D0
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| MAX1294 | 420ksps, +5V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| MAX1294ACEI | 420ksps, +5V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| MAX1294BCEI | 420ksps, +5V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| MAX1296ACEG | 420ksps, +5V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1294BEEI+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 6Ch 420ksps 5.5V Precision 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 |
| MAX1294BEEI+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 6Ch 420ksps 5.5V Precision 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 |
| MAX1294BEEI-T | 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 |
| MAX1294EVKIT | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 MAX1294 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| MAX1295ACEI | 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 |
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