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参数资料
| 型号： | MAX125CCAX+D |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/15页 |
| 文件大小： | 0K |
| 描述： | IC DAS 14BIT 2X4CH 36-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 30 |
| 类型： | 数据采集系统（DAS） |
| 分辨率（位）： | 14 b |
| 数据接口： | 并联 |
| 电压电源： | 模拟和数字，双 ± |
| 电源电压： | ±4.75 V ~ 5.25 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 36-BSOP（0.295"，7.50mm 宽） |
| 供应商设备封装： | 36-SSOP |
| 包装： | 管件 |
| 产品目录页面： | 1393 (CN2011-ZH PDF) |
MAX125/MAX126
Reading a Conversion
Digitized data from up to four channels are stored in
memory to be read out through the parallel interface.
After receiving an INT signal, the user can access up to
four conversion results by performing up to four read
operations.
With CS low, the conversion result from CH_1 is
accessed, and INT is reset high on the first RD falling
edge. On the RD rising edge, the internal address
pointer is advanced. If a single conversion is pro-
grammed, only one RD pulse is required, and the
address pointer is reset to CH_1. For multichannel con-
versions, up to four RD falling edges sequentially
access the data for channels 1 through 4. For
n chan-
nels converted (1 <
n
≤ 4), the address pointer is reset
to CH_1 after
n RD pulses. Do not perform a read oper-
ation during conversion, as it will corrupt the conver-
sion’s accuracy.
__________Applications Information
External Clock
The MAX125/MAX126 require a TTL-compatible clock
up to 16MHz for proper operation. The clock duty
cycle’s range is between 30% and 70%.
Internal and External Reference
The MAX125/MAX126 can be used with an internal or
external reference voltage. An external reference can
be connected directly at REFIN. An internal buffer with
a gain of +1 provides 2.5V at REFOUT.
Internal Reference
The full-scale range with the internal reference is ±5V
for the MAX125 and ±2.5V for the MAX126. Bypass
REFIN with a 0.1F capacitor to AGND and bypass the
REFOUT pin with a 4.7F (min) capacitor to AGND
(Figure 6). The maximum value to compensate the ref-
erence buffer is 22F. Larger values are acceptable if
low-ESR capacitors are used.
External Reference
For operation over a wide temperature range, an exter-
nal 2.5V reference with tighter specifications improves
accuracy. The MAX6325 is an excellent choice
to match the MAX125/MAX126 accuracy over the
commercial and extended temperature ranges with a
2x4-Channel, Simultaneous-Sampling
14-Bit DAS
10
______________________________________________________________________________________
X = Don’t care
Table 1. Modes of Operation
A3
A2
A1
0
1
0
1
A0
0
1
0
1
CONVERSION
TIME (s)
3
6
9
12
MODE
Input Mux A/Two-Channel Conversion
Input Mux A/Three-Channel Conversion
Input Mux A/Four-Channel Conversion
0
1
0
3
Input Mux B/Single-Channel Conversion
0
1
0
1
6
Input Mux B/Two-Channel Conversion
0
1
0
9
Input Mux B/Three-Channel Conversion
0
1
12
Input Mux B/Four-Channel Conversion
1
X
—
Power-Down
TO DAC
REFIN
10k
0.1
F
4.7
F
AV = 1
2.5V
REFOUT
7
6
(2.5V)
MAX125
MAX126
Figure 6. Internal Reference
Input Mux A/Single-Channel Conversion (default at power-up)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX125CCAX-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 |
| MAX125CEAX | 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 |
| MAX125CEAX+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube 制造商:Maxim Integrated Products 功能描述:14BIT DAS 4CH PARALLEL 36SSOP |
| MAX125CEAX+D | 功能描述:模数转换器 - ADC 14-Bit 8Ch 250ksps 2.75V 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 |
| MAX125CEAX+GB7 | 制造商:Maxim Integrated Products 功能描述:2X4-CHANNEL, SIMULTANEOUS-SAMPLING, 14-BIT DAS - Rail/Tube |
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