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参数资料
| 型号： | MAX1309ECM |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | ADC |
| 英文描述： | Metal Dust Cap; For Use With:Amphenol PCD FW Field TV Square Flange Receptacles; Body Plating:Olive Drab Cadmium RoHS Compliant: Yes |
| 中文描述： | 4-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| 封装： | 7 X 7 MM, 1.40 MM HEIGHT, MS-026BBC, TQFP-48 |
| 文件页数： | 22/36页 |
| 文件大小： | 487K |
| 代理商： | MAX1309ECM |
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M
8-/4-/2-Channel,12-Bit,Simultaneous-Sampling ADCs
with ±10V, ±5V, and 0 to +5V Analog Input Ranges
22
______________________________________________________________________________________
Starting a Conversion
To start a conversion using internal clock mode, pull
CONVST low for the acquisition time (t
ACQ
). The T/H
acquires the signal while CONVST is low, and conver-
sion begins on the rising edge of CONVST. The end-of-
conversion signal (
EOC
) pulses low whenever a
conversion result becomes available for read. The end-
of-last-conversion signal (
EOLC
) goes low when the last
conversion result is available (Figure 7).
To start a conversion using external clock mode, pull
CONVST low for the acquisition time (t
ACQ
). The T/H
acquires the signal while CONVST is low. The rising
edge of CONVST is the sampling instant. Apply an
external clock to CLK to start the conversion. To avoid
T/H droop degrading the sampled analog input signals,
the first CLK pulse must occur within 10μs from the
rising edge of CONVST. Additionally, the external clock
frequency must be greater than 100kHz to avoid T/H
droop-degrading accuracy. The first conversion result
is available for read when
EOC
goes low on the rising
edge of the 13th clock cycle. Subsequent conversion
results are available after every third clock cycle there-
after (Figures 8 and 9).
In both internal and external clock modes, hold
CONVST high until the last conversion result is read. If
CONVST goes low in the middle of a conversion, the
current conversion is aborted and a new conversion is
initiated. Furthermore, there must be a period of bus
inactivity (t
QUIET
) for 50ns or longer before the falling
edge of CONVST for the specified ADC performance.
CONVST
CH0
TRACK
HOLD
D0–D11
SAMPLE
INSTANT
t
ACQ
t
EOC
t
ACC
t
CTR
t
RDH
t
RTC
t
RDL
t
REQ
TRACK
CH1
t
CONV
t
NEXT
EOC
t
CVEOLCD
t
QUIET
≥
50ns
EOLC
CS*
RD
*CS CAN BE LOW AT ALL TIMES, LOW DURING THE RD CYCLES, OR THE SAME AS RD.
Figure 7. Read During Conversion—Channel 0 and Channel 1 Selected, Internal Clock
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1313ECM | 8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs with 【10V, 【5V, and 0 to +5V Analog Input Ranges |
| MAX1314ECM | 8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs with 【10V, 【5V, and 0 to +5V Analog Input Ranges |
| MAX1310ECM | 8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs with 【10V, 【5V, and 0 to +5V Analog Input Ranges |
| MAX1312ECM | 8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs with 【10V, 【5V, and 0 to +5V Analog Input Ranges |
| MAX1305ECM | 8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs with 【10V, 【5V, and 0 to +5V Analog Input Ranges |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1309ECM/V+ | 功能描述:模数转换器 - ADC 12-Bit 4Ch 1.075Msps 3V 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 |
| MAX1309ECM/V+T | 功能描述:模数转换器 - ADC 12-Bit 4Ch 1.075Msps 3V 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 |
| MAX1309ECM+ | 功能描述:模数转换器 - ADC 12-Bit 4Ch 1.075Msps 3V 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 |
| MAX1309ECM+T | 功能描述:模数转换器 - ADC 12-Bit 4Ch 1.075Msps 3V 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 |
| MAX1309ECM-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 |
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