The AD7403 isolated sigma-delta modulator achieves an 81-dB Signal-to-Noise And Distortion ratio (SINAD) (min) @ 78 KSPS over a -40Cdeg to +125Cdeg temperature range, which is 11 dB higher than competing devices.
AD7403 Sigma-Delta Modulator integrates ADI's iCoupler Digital Isolation Technology
The AD7403 isolated sigma-delta modulator integrates ADI's iCoupler digital isolation technology, creating a single-chip solution for measuring the voltage across a shunt resistor by converting an analog signal into a 1-bit data stream that can be clocked at up to 20 MHz.
The higher performance of the isolated sigma-delta modulator enables the use of a smaller shunt resistor, which reduces thermal loss across the shunt while retaining measurement accuracy.
One is the 2nd order sigma-delta modulator with feed-forward signal path , which has a high linearity even at low OSR.
The simulated integrator outputs histograms of the 4th order cascaded sigma-delta modulator with -4dB/2.
5mW 185-Msample/s sigma-delta modulator for UMTS/GSM dual-standard IF Reception", IEEE J.
9 mW 79/50 dB DR sigma-delta modulator for GSM/WCDMA in a 0.
9] Jen-Shiun Chiang; Pao-Chu Chou; 2003, "Dual mode Sigma-Delta Modulator for Wideband Receiver Applications", Teng-Hung Chang; ISCAS '03.
The AD1555 contains an analog multiplexer, a fully differential PGA and a fourth-order sigma-delta modulator
that simplifies system design and reduces the need for the unique and rare design expertise previously required to attain high common mode rejection.
These components were selected for their high performance, size and compatibility and include AD7401 isolated sigma-delta modulators
, ADUM5000 isolated DC-to-DC converters and ADUM5230 isolated half-bridge gate drivers.
Intellectual Property includes Silicon IP such as Sigma-Delta modulators
for data conversion and RF applications; SoC Design Platforms and supportive modules such as their AMBA solutions and other, application specific, development platforms; VGA/SXGA cores.