Distributor | SKU | Stock | Cost | |
---|---|---|---|---|
DigiKey | AD7730BNZ-ND | 335 | $29.95 | Buy |
Mouser Electronics | 584-AD7730BNZ | 804 | $36.77 | Buy |
Arrow North American Components | AD7730BNZ | 0 | $26.32 | Buy |
Verical Marketplace | AD7730BNZ | 16 | $41.64 | Buy |
Arrow Europe | AD7730BNZ | 16 | $23.85 | Buy |
Farnell | AD7730BNZ | 27 | * $37.26 | Buy |
element14 APAC | AD7730BNZ | 34 | * $39.83 | Buy |
Win Source | AD7730BNZ | 1300 | Buy | |
Analog Devices Inc | AD7730BNZ | $33.74 | Buy | |
Newark | AD7730BNZ | 30 | $36.95 | Buy |
The AD7730 is a complete analog front end for weigh-scale and pressure measurement applications. The device accepts low-level signals directly from a transducer and outputs a serial digital word. The input signal is applied to a proprietary programmable gain front end based around an analog modulator.The modulator output is processed by a low pass programmable digital filter, allowing adjustment of filter cutoff, output rate and settling time.The part features two buffered differential programmable gain analog inputs as well as a differential reference input. The part operates from a single +5 V supply. It accepts four unipolar analog input ranges: 0 mV to ±10 mV, +20 mV, +40 mV and +80 mV and four bipolar ranges: ±10 mV, ±20 mV, ±40 mV and ±80 mV. The peak-to-peak resolution achievable directly from the part is 1 in 230,000 counts. An on-chip 6-bit DAC allows the removal of TARE voltages. Clock signals for synchronizing ac excitation of the bridge are also provided.The serial interface on the part can be configured for three-wire operation and is compatible with microcontrollers and digital signal processors. The AD7730 contains self-calibration and system calibration options, and features an offset drift of less than 5 nV/°C and a gain drift of less than 2 ppm/°C.The part is available in a 24-pin plastic DIP, a 24-lead SOIC and 24-lead TSSOP package.APPLICATIONS Weigh Scales Pressure Measurement