Datasheet for AD7722:
- Manufacturer Part Number : AD7722
- Manufacturer : AD
- Description : 16-Bit, 195 kSPS CMOS, Sigma-Delta ADC
- Series : AD7722
- Reference Price : USD 16.648
- Our Price : We have a better price, contact us by email
- Product Type : Precision A/D Converters
- Function : Single Channel A/D Converters
- Current Suggest : Production
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : AD7722
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
Contact us to check the best price and real time inventory quantity for AD7722. If you need any more information about AD7722, you can also send us by email. Our email is [email protected], we will reply you in 12 hours.
- 16-Bit Σ-Δ ADC
- 64 x Oversampling Ratio
- Up to 220 kSPS Output Word Rate
- Low-Pass, Linear Phase Digital Filter - Inherently Monotonic
- On-Chip 2.5 V Voltage Reference
- Single-Supply 5 V
- High Speed Parallel or Serial Interface
The analog input is continuously sampled by an analog modulator eliminating the need for external sample-and-hold circuitry. The modulator output is processed by two Finite Impulse Response (FIR) digital filters in series. The on-chip filtering reduces the external antialias requirements to first order, in most cases. The group delay for the filter is 215.5 µs, while the settling time for a step input is 431 µs. The sample rate, filter corner frequency, and output word rate are set by an external clock that is nominally 12.5 MHz.
Use of a single bit DAC in the modulator guarantees excellent linearity and dc accuracy. Endpoint accuracy is ensured by on-chip calibration. This calibration procedure minimizes the zero-scale and full-scale errors.
Conversion data is provided at the output register through a flexible serial port or a parallel port. This offers 3-wire, high speed interfacing to digital signal processors. The serial interface operates in an internal clocking (master) mode, whereby an internal serial data clock and framing pulse are device outputs. Additionally, two AD7722s can be configured with the serial data outputs connected together. Each converter alternately transmits its conversion data on a shared serial data line.
The part provides an accurate on-chip 2.5 V reference. A reference input/output function is provided to allow either the internal reference or an external system reference to be used as the reference source for the part.
The AD7722 is available in a 44-pin PQFP package and is specified over the industrial temperature range from –40°C to +85°C.
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.
