参数资料
| 型号： | MX7828LP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/12页 |
| 文件大小： | 0K |
| 描述： | IC ADC 8BIT HS 28-PLCC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 500 |
| 位数： | 8 |
| 采样率（每秒）： | 400k |
| 数据接口： | 并联 |
| 转换器数目： | 3 |
| 功率耗散（最大）： | 75mW |
| 电压电源： | 单电源 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-LCC（J 形引线） |
| 供应商设备封装： | 28-PLCC（11.51x11.51） |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 8 个单端，单极 |
does not require microprocessor WAIT states. A READ
operation simultaneously initiates a conversion and
reads the previous conversion result.
Interface Mode 0
Figure 5 shows the timing diagram for Mode 0 opera-
tion. This is used with microprocessors that have WAIT
state capability, whereby a READ instruction is extend-
ed to accommodate slow-memory devices. Taking CS
and RD low latches the analog multiplexer address and
starts a conversion. Data outputs DB0–DB7 remain in
the high-impedance condition until the conversion is
complete.
There are two status outputs: Interrupt (INT) and Ready
(RDY). RDY, an open-drain output (no internal pull-up
device), is connected to the processor’s READY/WAIT
input. RDY goes low on the falling edge of CS and goes
high impedance at the end of the conversion, when the
conversion result appears on the data outputs. If the RDY
output is not required, its external pull-up resistor can be
omitted. INT goes low when the conversion is complete
and returns high on the rising edge of CS or RD.
Interface Mode 1
Mode 1 is designed for applications where the micro-
processor is not forced into a WAIT state. Taking CS
and RD low latches the multiplexer address and starts
a conversion (Figure 6). Data from the previous conver-
sion is immediately read from the outputs (DB0–DB7).
INT goes high at the rising edge of CS or RD and goes
low at the end of the conversion. A second READ oper-
ation is required to read the result of this conversion.
The second READ latches a new multiplexer address
and starts another conversion. A delay of 2.5s must
be allowed between READ operations. RDY goes low
on the falling edge of CS and goes high impedance at
the rising edge of CS. If RDY is not needed, its external
pull-up resistor can be omitted.
MX7824/MX7828
CMOS, High-Speed, 8-Bit ADCs
with Multiplexer
_______________________________________________________________________________________
7
500ns
VIN IS TRACKED
BY INTERNAL
COMPARATORS
VIN IS SAMPLED
AND THE FOUR MSBs
ARE LATCHED
SETUP TIME REQUIRED
BY THE INTERNAL
COMPARATORS PRIOR TO
STARTING CONVERSION
600ns
RD
INT GOING LOW
INDICATES THAT
CONVERSION IS
COMPLETE AND
THAT DATA CAN
BE READ
1000ns
Figure 4. Operating Sequence
DATA
VALID
ADDR
VALID
ADDR
VALID
INT
RDY
RD
ANALOG
CHANNEL
ADDRESS
CS
tAS
tAH
tRDY
tCRD
HIGH IMPEDANCE
tCSS
tINTH
tDH
tACC2
tAS
tP
tCSH
Figure 5. Mode 0 Timing Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MX7828TQ | 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 |
| MX7828TQ/883 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Single-Ended Data Acquisition System |
| MX7828TQ/883B | 功能描述:模数转换器 - ADC 8-Bit 8Ch 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 |
| MX7828TQ883B | 制造商:MAXIM 功能描述:New |
| MX7828UQ | 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 |
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