ADR821

ANALOG DEVICE

Analog Device ADR821 2.5V Low Power, Precision Reference And Operational Amplifier Simple Type: Amplifier The ADR821 offers a combination of precision voltage reference and op amp in a 10-lead mini small outline package (MSOP). The reference and the op amp can be operated independently, offering the user a range of flexibility for arranging the combination. Featuring a combined operating current of less than 400 µA and 15 ppm/°C on the reference, the ADR821 is ideally suited for applications requiring precision and low power. Available with the reference at 1.25 V and at 2.5 V, the ADR821 also comes in two grades. The reference on the A grade offers 30 ppm/°C temperature drift performance and ±0.4% initial accuracy. The B grade provides tighter temperature drift performance of 15 ppm/°C and only ±0.2% initial accuracy. All versions operate from -40°C to +125°C. Download the datasheet (PDF)

AD7401A

ANALOG DEVICE

Analog Devices AD7401A Second-Order Sigma-Delta Modulator Simple Type: Analog I/O Module The AD7401A is a second-order, sigma-delta (S-?) modulator that converts an analog input signal into a high speed, 1-bit data stream with on-chip digital isolation based on Analog Devices, Inc., iCoupler technology. The AD7401A operates from a 5 V power supply and accepts a differential input signal of ±250 mV (±320 mV full scale). The analog input is continuously sampled by the analog modulator, eliminating the need for external sample-and-hold circuitry. The input information is contained in the output stream as a density of ones with a data rate up to 20 MHz. The original information can be reconstructed with an appropriate digital filter. Download the datasheet (PDF)