AU_ (21.06.2005 09:02, просмотров: 1056)
AD7799 - АЦП новый от AD, 24 разряда и типа шум 27/65 nV. Теперь можно входной усилитель на тензопреобразователь не ставить? http://www.promelec.ru/pdf/AD7798_9_0.pdf
FEATURES
RMS noise:
27 nV at 4.17 Hz (AD7799)
65 nV at 16.7 Hz (AD7799)
40 nV at 4.17 Hz (AD7798)
85 nV at 16.7 Hz (AD7798)
Current: 380 µA typ
Power-down: 1 µA max
Low noise programmable gain instrumentation-amp
Update rate: 4.17 Hz to 500 Hz
3 differential inputs
Internal clock oscillator
Simultaneous 50 Hz/60 Hz rejection
Reference Detect
Low-side power switch
Programmable digital outputs
Burnout currents
Power supply: 2.7 V to 5.25 V
–40°C to +105°C temperature range
Independent interface power supply
16-lead TSSOP package
INTERFACE
3-wire serial
SPI®-, QSPI™-, MICROWIRE™-, and DSP-compatible
Schmitt trigger on SCLK
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