参数资料
型号: MAX1191ETI+
厂商: Maxim Integrated Products
文件页数: 15/27页
文件大小: 0K
描述: IC ADC 8BIT 7.5MSPS DUAL 28-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 60
位数: 8
采样率(每秒): 7.5M
数据接口: 并联
转换器数目: 2
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-WFQFN 裸露焊盘
供应商设备封装: 28-TQFN-EP(5x5)
包装: 管件
输入数目和类型: 4 个单端,双极;2 个差分,双极
产品目录页面: 1396 (CN2011-ZH PDF)
MAX1191
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
22
______________________________________________________________________________________
Figure 11 shows the MAX6066 precision bandgap ref-
erence used as a common reference for multiple con-
verters. The 2.500V output of the MAX6066 is followed
by a 10Hz lowpass filter and precision voltage-divider.
The MAX4254 buffers the taps of this divider to provide
the 1.75V, 1.5V, and 1.25V sources to drive REFP,
REFN, and COM. The MAX4254 provides a low offset
voltage and low noise level. The individual voltage fol-
lowers are connected to 10Hz lowpass filters, which fil-
ter both the reference-voltage and amplifier noise to a
level of 3nV/
√Hz. The 1.75V and 1.25V reference volt-
ages set the differential full-scale range of the associat-
ed ADCs at ±0.5V.
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 sup-
port as many as 160 MAX1191s.
MAX4254
1/4
47
3V
2
2.500V
3
1
REFP
VDD
MAX1191
N = 1
27
GND
NOTE: ONE FRONT-END
REFERENCE CIRCUIT
SUPPORTS UP TO 160 MAX1191s.
3
0.1
F
10
F
6V
1
F
1%
30.1k
1%
10.0k
0.1
F
2.2
F
330
F
6V
0.33
F
26
24
0.33
F
REFN
REFIN
25
0.33
F
COM
MAX6066
1.748V
1%
10.0k
1%
49.9k
REFP
VDD
MAX1191
N = 160
27
GND
0.33
F
26
24
0.33
F
REFN
25
0.33
F
COM
1.47k
MAX4254
47
6
5
7
10
F
6V
330
F
6V
1.498V
1.47k
47
9
10
8
10
F
6V
330
F
6V
1.248V
MAX4254
1.47k
1M
MAX4254
13
12
14
11
4
0.1
F
UNCOMMITTED
1M
3V
1/4
Figure 11. External Unbuffered Reference Driving 160 ADCs with MAX4254 and MAX6066
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相关代理商/技术参数
参数描述
MAX1191ETI+ 功能描述:模数转换器 - ADC 8-Bit 2Ch 7.5Msps 3.6V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
MAX1191ETI+T 功能描述:模数转换器 - ADC 8-Bit 2Ch 7.5Msps 3.6V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
MAX1191ETI-T 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
MAX1192ETI 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
MAX1192ETI+ 功能描述:模数转换器 - ADC 8-Bit 2Ch 22Msps 3.6V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32