Hi Phil,

The AD7691 is part of a 10 pin SAR family that are pin and package compatible. You can see this in the parts table in the AD4003 datasheet (table 8). The most recent release in this 10 pin compatible family is the AD4003 which was released last…

Kowshik,

For the best fidelity in measurement, I would recommend a precision ADC, and these are available in speeds of greater than 1Msps, which is certainly fast enough for most biometric signals. For Analog Devices, High Speed ADC's are for much higher…