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参数资料
型号： MAX186DCPP+
厂商： Maxim Integrated Products
文件页数： 9/25页
文件大小： 0K
描述： IC DAS 8CH 12BIT T/H LP 20-DIP
产品培训模块： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装： 18
类型： 数据采集系统（DAS），ADC
分辨率（位）： 12 b
采样率（每秒）： 133k
数据接口： MICROWIRE?，QSPI?，串行，SPI?
电压电源： 双 ±
电源电压： ±5V
工作温度： 0°C ~ 70°C
安装类型： 通孔
封装/外壳： 20-DIP（0.300"，7.62mm）
供应商设备封装： 20-PDIP
包装： 管件
产品目录页面： 1393 (CN2011-ZH PDF)
Low-Power, 8-Channel,
Serial 12-Bit ADCs
Maxim Integrated
17
MAX186/MAX188
FULL
POWER-DOWN
POWERED
UP
POWERED UP
DATA VALID
INTERNAL CLOCK MODE
SX XXXX 10
S
00
XX
X
S
MODE
DOUT
DIN
CLOCK
MODE
SETS INTERNAL
CLOCK MODE
SETS FULL
POWER-DOWN
CONVERSION
SSTRB
10 0
DIN
REFADJ
VREF
2.5V
0V
4V
0V
10 1
1
11
0 0
10 1
FULLPD
FASTPD
NOPD
FULLPD
FASTPD
2ms WAIT
COMPLETE CONVERSION SEQUENCE
tBUFFEN
≈15s
τ = RC = 20kΩ x CREFADJ
(ZEROS)
CH1
CH7
(ZEROS)
Hardware Power-Down
The SHDN pin places the converter into the full
power-down mode. Unlike with the software shut-down
modes, conversion is not completed. It stops coinci-
dentally with SHDN being brought low. There is no
power-up delay if an external reference is used and is
not shut down. The SHDN pin also selects internal or
external reference compensation (see Table 7).
Power-Down Sequencing
The MAX186/MAX188 auto power-down modes can
save considerable power when operating at less than
maximum sample rates. The following discussion illus-
trates the various power-down sequences.
Lowest Power at up to 500
Conversions/Channel/Second
The following examples illustrate two different power-down
sequences. Other combinations of clock rates, compen-
sation modes, and power-down modes may give lowest
power consumption in other applications.
Figure 14a depicts the MAX186 power consumption for
one or eight channel conversions utilizing full
power-down mode and internal reference compensation.
A 0.01F bypass capacitor at REFADJ forms an RC filter
with the internal 20k
Ω reference resistor with a 0.2ms
time constant. To achieve full 12-bit accuracy, 10 time
constants or 2ms are required after power-up. Waiting
2ms in FASTPD mode instead of full power-up will reduce
the power consumption by a factor of 10 or more. This is
achieved by using the sequence shown in Figure 13.
Figure 12b. Timing Diagram Power-Down Modes, Internal Clock
Figure 13. MAX186 FULLPD/FASTPD Power-Up Sequence
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相关代理商/技术参数
参数描述
MAX186DCPP+ 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
MAX186DCWP 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
MAX186DCWP+ 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
MAX186DCWP+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
MAX186DCWP-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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