Datasheet for AD7731BRZ:
- Manufacturer Part Number : AD7731BRZ
- Manufacturer : AD
- Description : Low Noise, High Throughput 24-Bit Sigma-Delta ADC IC
- Series : AD7731
- Reference Price : USD 9.496
- Our Price : We have a better price, contact us by email
- Product Type : Precision A/D Converters
- Function : Multiplexed A/D Converters
- Current Suggest : Production
- Status : Production
- ROHS Status : ROHS Compliant (Lead Free)
- Package Type : 24-Lead SOIC (Wide)
- Pins : 24
- MFG Package Case : RW-24
- Part Type : OTH
- Standard Packing Type : Tube
- Standard Packing Quantity : 31
- Working Temperature : -40 to 85C
- Other Part Number : AD7731BRZ
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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- 24-Bit Sigma-Delta ADC
- 16 Bits p-p Resolution at 800 Hz Output Rate
- Programmable Output Rates up to 6.4 kHz
- Programmable Gain Front End
- ±0.0015% Nonlinearity
- Buffered Differential Inputs
- Programmable Filter Cutoffs
- FASTStep™* Mode for Channel Sequencing
- Single Supply Operation
The AD7731 is a complete analog front-end for process controlapplications. The device has a proprietary programmable gainfront end that allows it to accept a range of input signal ranges,including low level signals, directly from a transducer. The sigmadeltaarchitecture of the part consists of an analog modulatorand a low pass programmable digital filter, allowing adjustmentof filter cutoff, output rate and settling time.
The part features three buffered differential programmable gainanalog inputs (which can be configured as five pseudo-differentialinputs), as well as a differential reference input. The part operatesfrom a single +5 V supply and accepts seven unipolar analoginput ranges: 0 to +20 mV, +40 mV, +80 mV, +160 mV,+320 mV, +640 mV and +1.28 V, and seven bipolar ranges:±20 mV, ±40 mV, ±80 mV, ±160 mV, ±320 mV, ±640 mV and±1.28 V. The peak-to-peak resolution achievable directly fromthe part is 16 bits at an 800 Hz output rate. The part can switchbetween channels with 1 ms settling time and maintain a performancelevel of 13 bits of peak-to-peak resolution.
The serial interface on the part can be configured for three-wireoperation and is compatible with microcontrollers and digitalsignal processors. The AD7731 contains self-calibration andsystem calibration options and features an offset drift of lessthan 5 nV/°C and a gain drift of less than 2 ppm/°C.
The part is available in a 24-lead plastic DIP, a 24-lead SOICand 24-lead TSSOP package.
Applications
- Process Control
- PLCs/DCS
- Industrial Instrumentation
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.