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参数资料
| 型号： | MAX116 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | 2x4-Channel, Simultaneous-Sampling 12-Bit ADCs |
| 中文描述： | 2x4通道、同时采样、12位ADC |
| 文件页数： | 12/14页 |
| 文件大小： | 215K |
| 代理商： | MAX116 |
M
(LSB) values. Output coding is two-complement binary
with 1LSB = 2.44mV for the MAX115 and
1LSB = 1.22mV for the MAX116.
Output Demultiplexer
An output demultiplexer circuit is useful for isolating
data from one channel in a four-channel conversion
sequence. Figure 9’s circuit uses the external 16MHz
clock and the
INT
signal to generate four
RD
pulses
and a latch clock to save data from the desired chan-
nel.
CS
must be low during the four
RD
pulses. The
channel is selected with the binary coding of two
switches. A 16-bit 16373 latch simplifies layout.
Motor-Control Applications
Vector motor control requires monitoring of the individ-
ual phase currents. In their most basic application, the
MAX115/MAX116 simultaneously sample two currents
(CH1A and CH2A, Figure 10) and preserve the neces-
sary relative phase information. Only two of the three
phase currents have to be digitized because the third
component can be mathematically derived with a coor-
dinate transformation.
The circuit of Figure 10 shows a typical vector motor-
control application using all available inputs of the
MAX115/MAX116. CH1A and CH2A are connected
to two isolated Hall-effect current sensors and are a
2x4-Channel, Simultaneous-Sampling
12-Bit ADCs
12
______________________________________________________________________________________
PRE
CLR
ENP
ENT
LOAD
HC161
1/2 HC74
V
CC
V
CC
V
CC
A
B
C
D
(LSB) 0
1
2
3
RCO
D
Q
Q
CLR
P0
P1
P2
P3
P4
P5
P6
P7
HC688
P = Q
Q0
Q1
Q2
Q3
V
CC
Q4
Q5
Q6
Q7
G
LATCH
CLOCK
(TO 16373 LATCH)
0
1
0
1
CH1
CH2
CH3
CH4
0
0
1
1
10k
EXTERNAL
CLOCK
EXTERNAL
CLOCK
RD
INT
Figure 9. Output Demultiplexer Circuit
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1160 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:10-Bit, 20Msps, TTL-Output ADC |
| MAX11600 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/8-/12-Channel 2-Wire Serial 8-Bit ADCs |
| MAX11600_10 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Evaluation System |
| MAX11600EKA+ | 制造商:Maxim Integrated Products 功能描述: |
| MAX11600EKA+T | 功能描述:模数转换器 - ADC 8-Bit 4Ch 188ksps 5.5V 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 |
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