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參數(shù)資料
| 型號： | MAX1190 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | ADC |
| 英文描述： | Dual 10-Bit, 120Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs |
| 中文描述： | 雙路、10位、120Msps、3.3V、低功耗ADC，內(nèi)置電壓基準及并行輸出 |
| 文件頁數(shù)： | 16/21頁 |
| 文件大小： | 739K |
| 代理商： | MAX1190 |
M
high-gain accuracy) and a low noise level. The passive
10Hz filter following the buffer attenuates noise pro-
duced in the voltage reference and buffer stages. This
filtered noise density, which decreases for higher fre-
quencies, meets the noise levels specified for preci-
sion-ADC operation.
Unbuffered External Reference Drives
Multiple ADCs
Connecting each REFIN to analog ground disables the
internal reference of each device, allowing the internal
reference ladders to be driven directly by a set of exter-
nal reference sources. Followed by a 10Hz lowpass fil-
ter and precision voltage-divider, the MAX6066
generates a DC level of 2.500V. The buffered outputs of
this divider are set to 2.0V, 1.5V, and 1.0V, with an
accuracy that depends on the tolerance of the divider
resistors (Figure 9).
Those three voltages are buffered by the MAX4252,
which provides low noise and low DC offset. The indi-
vidual voltage followers are connected to 10Hz lowpass
filters, which filter both the reference voltage and ampli-
fier noise to a level of 3nV/
√
Hz
. The 2.0V and 1.0V refer-
ence voltages set the differential full-scale range of the
associated ADCs at 2V
P-P
. The 2.0V and 1.0V buffers
drive the ADCs
’
internal ladder resistances between
them. Note that the common power supply for all active
components removes any concern regarding power-
supply sequencing when powering up or down.
With the outputs of the MAX4252 matching better than
0.1%, the buffers and subsequent lowpass filters can
be replicated to support as many as 32 ADCs. For
applications that require more than 32 matched ADCs,
a voltage reference and divider string common to all
converters is highly recommended.
Dual 10-Bit, 120Msps, 3.3V, Low-Power ADC
with Internal Reference and Parallel Outputs
16
______________________________________________________________________________________
MAX1190
0.1
μ
F
1k
1k
100
100
C
22pF
C
IN
22pF
INB+
INB-
COM
INA+
INA-
0.1
μ
F
R
ISO
50
R
ISO
50
REFP
REFN
V
IN
MAX4108
0.1
μ
F
1k
1k
100
100
C
IN
22pF
C
IN
22pF
0.1
μ
F
R
ISO
50
R
ISO
50
REFP
REFN
V
IN
MAX4108
Figure 7. Using an Op Amp for Single-Ended, AC-Coupled Input Drive
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1190ECM | Dual 10-Bit, 120Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs |
| MAX1191 | Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC |
| MAX1191ETI-T | Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC |
| MAX1198 | Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs |
| MAX1198ECM | Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1190ECM+ | 制造商:Maxim Integrated Products 功能描述:IC SM ADC LOW POWER 10-BIT DUAL |
| MAX1190ECM+D | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10Bit 2Ch 120Msps 3.3V Low-Power 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1190ECM+TD | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10Bit 2Ch 120Msps 3.3V Low-Power 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1190ECM-D | 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1190ECM-TD | 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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