参数资料
| 型号： | MAX1409CAP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 35/48页 |
| 文件大小： | 0K |
| 描述： | IC DAS 16BIT LP 20-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 类型： | 数据采集系统（DAS） |
| 分辨率（位）： | 16 b |
| 采样率（每秒）： | 60 |
| 数据接口： | 串行 |
| 电压电源： | 模拟和数字 |
| 电源电压： | 2.7 V ~ 3.6 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 带卷 (TR) |
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MAX1407/MAX1408/MAX1409/MAX1414
Low-Power, 16-Bit Multichannel DAS with
Internal Reference,10-Bit DACs, and RTC
40
______________________________________________________________________________________
(BIP = 0). To initiate an ADC conversion: 1) Enter Run
mode by addressing the Run register 2) Select the
desired channels for conversion by writing to the MUX
register, (e.g., 94h selects IN1 for the positive channel
and IN2 for the negative channel) 3) Initiate the conver-
sion by writing to the ADC register, (e.g., 01h). The first
conversion result becomes available in 100ms. The ADC
will keep doing conversions at a rate of 30Hz until pow-
ered down.
To perform an on-chip offset calibration on a specific
configuration, write to the ADC register with the MODE
bit and STA1 bit set to 1. The ADC will do one calibra-
tion using the inputs to the ADC specified in the MUX
register and then stop. The calibration result will be
stored in the Offset register in two’s complement form.
Subsequent ADC conversion results will have the offset
value subtracted before written to the DATA register.
The MODE bit will be reset to 0 automatically upon
completion of the calibration. The ADC is now ready for
a normal conversion.
The offset for a given ADC configuration can be stored
by the P to avoid another ADC recalibration. Write the
stored offset back to the offset register when returning
back to that particular ADC configuration where the cal-
ibration was taken. Subsequent ADC conversion results
will have the offset value subtracted before they are
written to the DATA register.
DAC Unipolar Output
For a unipolar output, the output voltages and the refer-
ence have the same polarity. Figure 16 shows the
MAX1407/MAX1409/MAX1414s’ unipolar output circuit,
which is also the typical operating circuit for the DACs.
Table 11 lists some unipolar input codes and their cor-
responding output voltages.
For larger output swing see Figure 17. This circuit
shows the output amplifiers configured with a closed-
loop gain of +2V/V to provide 0 to 2.5V full-scale range
with the 1.25V reference.
DAC Bipolar Output
The MAX1407/MAX1409/MAX1414 DAC outputs can be
configured for bipolar operation using the application
circuit on Figure 18:
Figure 16. Unipolar Output Circuit
MAX1407/MAX1409/MAX1414
THE MAX1409 HAS ONE DAC
VREF = 1.25V
FB1
REF
FB2
OUT1
OUT2
AGND
DGND
DAC 1
DAC 2
Figure 17. Unipolar Rail-to-Rail Output Circuit
MAX1407/MAX1409/MAX1414
THE MAX1409 HAS ONE DAC
VREF = 1.25V
FB1
10k
10k
REF
FB2
OUT1
OUT2
AGND
DGND
DAC 1
10k
10k
DAC 2
Figure 18. Bipolar Output Circuit
MAX1407/MAX1409/MAX1414
+5V
-5V
FB_
R1
R2
R2 = R1
REF
OUT_
DAC_
VOUT
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1409EAP | 制造商:Maxim Integrated Products 功能描述:LOW-POWER, 16-BIT MULTICHANNEL DAS WITH INTER - Bulk |
| MAX140C/D | 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 |
| MAX140CMH | 制造商:Maxim Integrated Products 功能描述:44 PINS MQFP PKG - Bulk |
| MAX140CMH+ | 制造商:Maxim Integrated Products 功能描述:ADC SGL DUAL SLOPE 3 1/2DIGIT LED 44MQFP - Rail/Tube |
| MAX140CMH+D | 功能描述:模数转换器 - ADC 3 1/2 Dgt ADC w/Ref CPump LED Drivers 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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