参数资料
| 型号： | MAX114ENG+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/12页 |
| 文件大小： | 0K |
| 描述： | IC ADC 8BIT 1MSPS 24-DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 15 |
| 位数： | 8 |
| 采样率（每秒）： | 1M |
| 数据接口： | 并联 |
| 转换器数目： | 3 |
| 功率耗散（最大）： | 40mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 24-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 24-PDIP |
| 包装： | 管件 |
| 输入数目和类型： | 8 个单端，单极 |
MAX114/MAX118
In read mode,
WR/RDY is configured as a status output
(RDY), so it can drive the ready or wait input of a P.
RDY is an open-collector output (no internal pull-up)
that goes low after the falling edge of
CS and goes high
at the end of the conversion. If not used, the
WR/RDY
pin can be left unconnected. The
INT output goes low
at the end of the conversion and returns high on the ris-
ing edge of
CS or RD.
Write-Read Mode (MODE = 1)
Figures 4 and 5 show the operating sequence for write-
read mode. The comparator inputs track the analog
input voltage for the duration of tACQ. The conversion is
initiated by a falling edge of
WR. When WR returns
high, the result of the four-MSBs flash is latched into the
output buffers and the conversion of the four-LSBs flash
starts.
INT goes low, indicating conversion end, and the
lower four data bits are latched into the output buffers.
The data is then accessible after
RD goes low (see
Timing Characteristics).
A minimum acquisition time (tACQ) is required from INT
going low to the start of another conversion (
WR going
low).
Options for reading data from the converter include
using internal delay, reading before delay, and pipelined
operation (discussed in the following sections).
Using Internal Delay
The P waits for the
INT output to go low before reading
the data (Figure 4).
INT goes low after the rising edge of
WR, indicating that the conversion is complete and the
result is available in the output latch. With
CS low, data
outputs D0–D7 can be accessed by pulling
RD low. INT
is then reset by the rising edge of
CS or RD.
Fastest Conversion:
Reading Before Delay
Figure 5 shows an external method of controlling the
conversion time. The internally generated delay (tINTL)
varies slightly with temperature and supply voltage,
and can be overridden with
RD to achieve the fastest
conversion time.
RD is brought low after the rising edge
of
WR, but before INT goes low. This completes the
conversion and enables the output buffers that contain
the conversion result (D0–D7).
INT also goes low after
the falling edge of
RD and is reset on the rising edge of
RD or CS. The total conversion time is therefore: tWR +
tRD + tACC1 = 660ns.
+5V, 1Msps, 4 & 8-Channel,
8-Bit ADCs with 1A Power-Down
8
_______________________________________________________________________________________
tAH
tACQ
tDH
tREAD2
tRD
D0–D7
RD
WR
CS
INT
VALID DATA
(N)
tINTL
tACC2
tWR
tCSS
tCSH
tACQ
tCSS
tCSH
A0–A2
tINTH
ADDRESS
VALID (N)
ADDRESS VALID (N + 1)
Figure 4. Write-Read Mode Timing (tRD > tINTL) (MODE = 1)
tCSS
tACQ
tDH
tREAD1
tRD
tINTL
tACQ
tAH
RD
WR
CS
INT
VALID DATA
(N)
tCSS
tCSH
tINTH
tWR
tCSH
tACC1
tCWR
tRI
A0–A2
D0–D7
ADDRESS
VALID (N)
ADDRESS VALID (N + 1)
Figure 5. Write-Read Mode Timing (tRD < tINTL) (MODE = 1)
tCSS
tRDY
tACQ
tAH
WITH EXTERNAL
PULL-UP
tCSH
tACQ
tINTH
tUP
tDH
tCRD
tACCO
D0–D7
RDY
RD
CS
PWRDN
INT
A0–A2
VALID DATA
(N)
ADDRESS VALID (N + 1)
ADDRESS VALID
(N)
tAH
Figure 3. Read Mode Timing (MODE = 0)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX114ENG+ | 功能描述:模数转换器 - ADC 8-Bit 4Ch 1Msps 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 |
| MAX114-MAX118 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:+5V, 1Msps, 4 & 8-Channel, 8-Bit ADCs with 1レA Power-Down |
| MAX114MRG | 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 |
| MAX115 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:2x4-Channel, Simultaneous-Sampling 12-Bit ADCs |
| MAX1150 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:8-Bit, 500Msps Flash ADC |
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