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參數(shù)資料
| 型號： | MAX1200ACMH |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | RB Series - Econoline Unregulated DC-DC Converters; Input Voltage (Vdc): 24V; Output Voltage (Vdc): 05V; Power: 1W; Low Cost 1W Converter; Power Sharing on Dual Output Version; Industry Standard Pinout; 1kVDC & 2kVDC Isolation Options; Optional Continuous Short Circuit Protected; UL94V-0 Package Material; Efficiency to 85% |
| 中文描述： | 1-CH 16-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP44 |
| 封裝： | M0-108AA-2, MQFP-44 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大小： | 204K |
| 代理商： | MAX1200ACMH |
M
+5V S ingle-S upply, 1Msps, 16-Bit
S elf-Calibrating ADC
_______________________________________________________________________________________
9
Choic e of Referenc e
It is important to choose a low-noise reference such as
the MAX6341, which can provide both excellent load
regulation and low temperature drift. The equivalent
input circuit for the reference pins is shown in Figure 3.
Note that the reference pins drive approximately 1k
of
resistance on-chip. They also drive a switched capaci-
tor of 21pF. To meet the dynamic performance, the ref-
erence voltage is required to settle to 0.0015% within
one clock cycle. Carefully choose an appropriate driv-
ing circuit (Figure 4). The capacitors at the reference
pins (RFPF, RFNF) provide the dynamic charge
required during each clock cycle, while the op amps
ensure accuracy of the reference signals. These
capacitors must have low dielectric-absorption charac-
teristics, such as polystyrene or teflon capacitors.
The reference pins can be connected to either single-
ended or differential voltages within the specified maxi-
mum levels. Typically the positive reference pin (RFPF)
would be driven to +4.096V, and the negative refer-
ence pin (RFNF) connected to analog ground for best
SNR performance. If THD performance is more impor-
tant to the application than signal-to-noise ratio, choose
a lower level, differential voltage such as V
RFPS
=
+3.5V and V
RFNS
= +1.5V.
There are sense pins, RFPS and RFNS, which can be
used with external amplifiers to compensate for any
resistive drop on these lines, internal or external to the
chip. Ensure a correct reference voltage by using prop-
er Kelvin connections at the sense pins.
Common-Mode V oltage
The switched-capacitor input circuit at the analog input
allows signals between AGND and the analog power
supply. Since the common-mode voltage has a strong
influence on the performance of the ADC, the best
results are obtained by choosing V
CM
= (V
RFPS
+
V
RFNS
) / 2. This can be achieved by using a resistive
divider between the two reference potentials. Figure 4
shows a typical driving circuit for good dynamic perfor-
mance.
RFPF
INP
INN
RFPF
CM
CM
RFNF
Figure 2. Simplified MDAC Architecture
RFPF
RFPS
RFNF
RFNS
Figure 3. Equivalent Input at the Reference Pins. The sense
pins should not draw any DC current.
V
RFP
= +4.096V
V
RFN
= 0
5k
5k
MAX410
CHIP BOUNDARY
CM
RFNS
RFNF
RFPS
RFPF
MAX410
MAX410
Figure 4. Drive Circuit for Reference Pins and Common-Mode
Pin
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1200ACMH-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 |
| MAX1200BCMH | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1200EVKIT-MQFP | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 Evaluation Kit for the MAX1200 MAX1201 MAX1205 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 |
| MAX1201 | 制造商:Technical Pro 功能描述:Passive Two Way Molded ABS 12" PA/DJ Speaker - 1000W Max 制造商:TECHNICAL PRO 功能描述:DWO PA/DJ PROFESSIONAL SPEAKERTWO WAY 12 INCH 1000W MAX |
| MAX1202ACAP | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Integrated Circuits (ICs) 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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