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参数资料
| 型号： | MAX5302CUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT LP SERIAL 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 设置时间： | 14µs |
| 位数： | 12 |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 1 电压，单极；1 电压，双极 |
| 采样率（每秒）： | * |
MAX5302
Low-Power, 12-Bit Voltage-Output DAC
with Serial Interface
10
______________________________________________________________________________________
DAC
VOUT
V+
+5V
V-
R1 = R2 = 10k
±0.1%
REF
R1
R2
FB
OUT
MAX5302
VDD
GND
Figure 10. Bipolar Output Circuit
Digitally Programmable Current Source
The circuit of Figure 12 places an NPN transistor (2N3904
or similar) within the op amp feedback loop to implement
a digitally programmable, unidirectional current source.
The output current is calculated with the following
equation:
IOUT = (VREF / R) (NB / 4096)
where NB is the numeric value of the DAC’s binary input
code, and R is the sense resistor shown in Figure 12.
Power-Supply Considerations
On power-up, the input and DAC registers are cleared
(set to zero code).
For rated MAX5302 performance, VREF must be at least
1.4V below VDD. Bypass VDD with a 4.7F capacitor in
parallel with a 0.1F capacitor to GND. Use short lead
lengths and place the bypass capacitors as close to
the supply pins as possible.
Grounding and Layout Considerations
Digital or AC transient signals on GND can create noise
at the analog output. Connect GND to the highest-quality
ground available.
Good PC board ground layout minimizes crosstalk
between the DAC output, reference input, and digital
input. Reduce crosstalk by keeping analog lines away
from digital lines. Wire-wrapped boards are not recom-
mended.
Table 3. Bipolar Code Table
MAX5302
DAC
REF
OUT
10k
GND
+5V
VDD
FB
Figure 9. Unipolar Rail-to-Rail Output Circuit
ANALOG OUTPUT
1111 1111 1111 (0)
1000 0000 0001 (0)
DAC CONTENTS
MSB
LSB
1000 0000 0000 (0)
0V
0111 1111 1111 (0)
0000 0000 0000 (0)
0000 0000 0001 (0)
+V
2047
2048
REF
+V
1
2048
REF
-V
1
2048
REF
-V
2047
2048
REF
-V
2048
-V
REF
=
Note: ( ) are for sub-bit.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5302EUA | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX5302EUA+ | 功能描述:数模转换器- DAC 12-Bit Precision DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX5302EUA+T | 功能描述:数模转换器- DAC 12-Bit Precision DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX5302EUA-T | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX5304CUA | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
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