参数资料
| 型号： | MX7705EWE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 18/33页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT 2CH 16-SOIC |
| 产品培训模块： | MAX11200 ADC Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 46 |
| 位数： | 16 |
| 采样率（每秒）： | 500 |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 管件 |
| 输入数目和类型： | 2 个差分，单极 |
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Test Register
This register is reserved for factory testing of the device.
For proper operation of the MX7705, do not change this
register from its default power-on reset values.
Offset and Gain-Calibration Registers
The MX7705 contains one offset register and one gain
register for each input channel. Each register is 24 bits
wide and can be written and read. The offset registers
store the calibration coefficients resulting from a zero-
scale calibration, and the gain registers store the cali-
bration coefficients resulting from a full-scale
calibration. The data stored in these registers are 24-bit
straight binary values representing the offset or gain
errors associated with the selected channel. A 24-bit
read or write operation can be performed on the cali-
bration registers for any selected channel. During a
write operation, 24 bits of data must be written to the
register, or no data is transferred.
Write to the calibration registers in normal mode only.
After writing to the calibration registers, the devices
implement the new offset and gain-register calibration
coefficients at the beginning of a new acquisition. To
ensure the results are valid, discard the first conversion
result after writing to the calibration registers.
To ensure that a conversion is not made using invalid
calibration data, drive FSYNC high prior to writing to the
calibration registers, and then release FSYNC low to ini-
tiate conversion.
Power-On Reset
At power-up, the serial-interface, logic, digital-filter, and
modulator circuits are reset. The registers are set to
their default values. The device returns to wait for a
write to the communications register. For accurate
measurements, perform calibration routines after
power-up. Allow time for the external reference and
oscillator to start up before starting calibration. See the
Typical Operating Characteristics for typical external-
oscillator startup times.
MX7705
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADC
______________________________________________________________________________________
25
Table 13. Output Data Rate and Notch Frequency vs. Filter Select and CLKIN Frequency
CLKIN FREQUENCY
fCLKIN (MHz)*
CLK
FS1
FS0
OUTPUT DATA RATE
(FIRST NOTCH) (Hz)
-3dB FILTER CUTOFF**
(Hz)
1
0
20
5.24
1
0
1
25
6.55
1
0
1
0
100
26.20
1
0
1
200
52.40
2.4576
1
0
50
13.10
2.4576
1
0
1
60
15.70
2.4576
1
0
250
65.50
2.4576
1
500
131.00
*
These values are given for CLKDIV = 0. External clock frequency, fCLKIN, can be two times the values in this column if CLKDIV = 1.
**
The filter -3dB filter cutoff frequency = 0.262 x filter first-notch frequency.
Table 12. Clock Register
FIRST BIT (MSB)
(LSB)
FUNCTION
RESERVED
CLKOUT
DISABLE
CLOCK
DIVIDER
CLOCK
SELECT
FILTER SELECT
Name
MXID
ZERO
CLKDIS
CLKDIV
CLK
FS1
FS0
Defaults
1
0
1
0
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MX7705EWE+ | 功能描述:模数转换器 - ADC 16-Bit 2Ch 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 |
| MX7705EWE+T | 功能描述:模数转换器 - ADC 16-Bit 2Ch 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 |
| MX7705EWE-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 |
| MX7820 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CMOS.1.3µ.s.8-Bit ADC with Voltage Reference and Track/Hold |
| MX7820BQ | 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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