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模数转换器 SIG7794 国产平替 AD7794，替代 AD7794
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信格勒微电子的芯片产品已通过行业头部大厂导入验证，深受百万终端客户好评。
而且因为 fully compatible. 板子拿来，换个芯片，性能更好。MCU 不用改 c code。
SIG7794/SIG7795
4.17SPS to 890SPS ADC with PGA and Reference
Compatible Parts
AD7794/AD7795 pin/register fully compatible (10nV/℃ and 3ppm/℃).
Features
- Programmable Gain: 1/2/4/8/16/32/64/128
- Data Rates: 4.17SPS to 890SPS
- RMS Noises: 20nV at 4.17SPS (Gain = 128)
- 23.2ENOB (21.0 noise-free bits) at 4.17SPS (Gain= 1)
- Offset Drift: 5nV/℃ (Gain = 128)
- Gain Drift: 1ppm/℃
- Integral Non-linearity: 3ppm
- internal reference: 4ppm/℃
- Reference input current: 1uA
- Internal or External Clock
- Simultaneous 50Hz/60Hz Rejection
- 6 Differential Inputs
- Current: 0.5mA
- Specified Temperature Range: -40℃ to 125℃
- Package: 24-ld TSSOP
- Power Supply
ApplicationsAVDD：2.7V to 5.25V
DVDD：2.7V to 5.25V
- Weight Scales and Strain Gauges
- Flow/Pressure Measurement
- Temperature Measurement
- Industrial Process Control
- Medical Instrumentation
