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参数资料
| 型号： | MAX147ACAP+T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | ADC |
| 英文描述： | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
| 中文描述： | 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20 |
| 封装： | SSOP-20 |
| 文件页数： | 27/28页 |
| 文件大小： | 746K |
| 代理商： | MAX147ACAP+T |
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MAX146/MAX147
+2.7V, Low-Power, 8-Channel,
Serial 12-Bit ADCs
8
_______________________________________________________________________________________
NAME
FUNCTION
1–8
CH0–CH7
Sampling Analog Inputs
PIN
9
COM
Ground reference for analog inputs. COM sets zero-code voltage in single-ended mode. Must be
stable to ±0.5LSB.
10
SHDN
Three-Level Shutdown Input. Pulling SHDN low shuts the MAX146/MAX147 down; otherwise, they are
fully operational. Pulling SHDN high puts the reference-buffer amplifier in internal compensation mode.
Letting SHDN float puts the reference-buffer amplifier in external compensation mode.
15
DOUT
Serial Data Output. Data is clocked out at SCLK’s falling edge. High impedance when CS is high.
14
DGND
Digital Ground
13
AGND
Analog Ground
11
VREF
Reference-Buffer Output/ADC Reference Input. Reference voltage for analog-to-digital conversion.
In internal reference mode (MAX146 only), the reference buffer provides a 2.500V nominal output,
externally adjustable at REFADJ. In external reference mode, disable the internal buffer by pulling
REFADJ to VDD.
19
SCLK
Serial Clock Input. Clocks data in and out of serial interface. In external clock mode, SCLK also sets
the conversion speed. (Duty cycle must be 40% to 60%.)
18
CS
Active-Low Chip Select. Data will not be clocked into DIN unless CS is low. When CS is high, DOUT is
high impedance.
17
DIN
Serial Data Input. Data is clocked in at SCLK’s rising edge.
16
SSTRB
Serial Strobe Output. In internal clock mode, SSTRB goes low when the MAX146/MAX147 begin the
A/D conversion, and goes high when the conversion is finished. In external clock mode, SSTRB pulses
high for one clock period before the MSB decision. High impedance when CS is high (external clock
mode).
______________________________________________________________Pin Description
VDD
6k
DGND
DOUT
CLOAD
50pF
CLOAD
50pF
DGND
6k
DOUT
a) High-Z to VOH and VOL to VOH
b) High-Z to VOL and VOH to VOL
VDD
6k
DGND
DOUT
CLOAD
50pF
CLOAD
50pF
DGND
6k
DOUT
a) VOH to High-Z
b) VOL to High-Z
Figure 1. Load Circuits for Enable Time
Figure 2. Load Circuits for Disable Time
12
REFADJ
Input to the Reference-Buffer Amplifier. To disable the reference-buffer amplifier, tie REFADJ to VDD.
20
VDD
Positive Supply Voltage
相关PDF资料 |
PDF描述 |
|---|---|
| MAX147ACAP+ | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
| MAX146BEPP+ | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
| MAX146BEAP+ | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
| MAX146BEAP+T | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
| MAX146BCPP+ | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX147ACPP | 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 |
| MAX147ACPP+ | 功能描述:模数转换器 - ADC 12-Bit 8Ch 133ksps 5.25V 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 |
| MAX147AEAP | 功能描述:模数转换器 - ADC Integrated Circuits (ICs) 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 |
| MAX147AEAP+ | 功能描述:模数转换器 - ADC 12-Bit 8Ch 133ksps 5.25V 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 |
| MAX147AEAP+T | 功能描述:模数转换器 - ADC 12-Bit 8Ch 133ksps 5.25V 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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