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参数资料
| 型号： | MAX115EAX |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | ADC |
| 英文描述： | 2x4-Channel, Simultaneous-Sampling 12-Bit ADCs |
| 中文描述： | 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO36 |
| 封装： | 0.300 INCH, 0.80 MM PITCH, SSOP-36 |
| 文件页数： | 10/14页 |
| 文件大小： | 215K |
| 代理商： | MAX115EAX |
M
For multichannel conversions,
INT
goes low after the last
channel has been digitized.
To input data into the MAX115/MAX116, pull
CS
low,
program the bidirectional pins A0–A3 (Table 1), and
pulse
WR
low. Data is latched into the devices on the
WR
or
CS
rising edge. The ADC is now ready to convert.
Once programmed, the ADC continues operating in the
same mode until reprogrammed or until power is
removed. Figure 5 shows an example of programming a
four-channel conversion using Input Mux A.
Starting a Conversion
After programming the MAX115/MAX116 as outlined in
the
Programming Modes
section, pulse
CONVST
low to
initiate a conversion sequence. The analog inputs are
sampled at the
CONVST
rising edge. Do not start a
new conversion while the conversion is in progress.
Monitor the
INT
output. A falling edge indicates the end
of a conversion sequence.
Reading a Conversion
Digitized data from up to four channels is 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 results from CH1_ are
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. For multi-
channel conversions, up to four
RD
falling edges
sequentially access the data for channels 1 through 4.
For any number of channels converted, the address
pointer is reset to CH1_ after four
RD
pulses. The
address pointer also resets after receiving a
CNVST
pulse. Do not perform a read operation during conver-
sion; it will corrupt the conversion’s accuracy.
__________Applications Information
Clock
The MAX115/MAX116 have an internal 10MHz (typ)
clock, which is activated by connecting CLK to DV
DD
(internal clock startup time is 165μs typ). The CLK input
also accepts an external clock with duty cycle between
30% and 70%.
2x4-Channel, Simultaneous-Sampling
12-Bit ADCs
10
______________________________________________________________________________________
X = Don’t care
Table 1. Modes of Operation
TO DAC
REFIN
10k
0.1
μ
F
4.7
μ
F
A
V
= 1
2.5V
REFOUT
7
6
(2.5V)
(2.5V)
MAX115
MAX116
Figure 6. Internal Reference
Input Mux A/Single-Channel Conversion (default at power-up)
Input Mux A/Two-Channel Conversion
Power-Down
—
X
X
X
1
Input Mux B/Four-Channel Conversion
8
1
1
1
0
Input Mux B/Three-Channel Conversion
6
0
1
1
0
Input Mux B/Two-Channel Conversion
4
1
0
1
0
Input Mux B/Single-Channel Conversion
2
0
0
1
0
Input Mux A/Four-Channel Conversion
Input Mux A/Three-Channel Conversion
MODE
8
6
4
2
CONVERSION
TIME (μs)
1
0
1
0
A0
1
0
0
1
0
0
0
0
0
0
0
0
A1
A2
A3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX115EAX+ | 制造商:Maxim Integrated Products 功能描述: |
| MAX115EAX+T | 功能描述:数据转换系统 RoHS:否 制造商:Texas Instruments 转换速率:0.001 MSPs 分辨率:24 bit 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX115EAX-T | 功能描述:数据转换系统 RoHS:否 制造商:Texas Instruments 转换速率:0.001 MSPs 分辨率:24 bit 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX115EVB16 | 功能描述:数据转换 IC 开发工具 12-Bit 8Ch 116ksps 2.6V Precision ADC RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| MAX115EVKIT | 功能描述:数据转换 IC 开发工具 MAX115 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
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