12bit ADC for extended-temperature applications

The new 12bit WM2152 analogue to digital convertor from Wolfson Microelectronics delivers 30Msample/s conversion performance over an extended temperature range.

The new 12bit WM2152 analogue to digital convertor from Wolfson Microelectronics delivers 30Msample/s conversion performance over an extended temperature range.

Designed for 3.3V applications in commercial or industrial environments, the new device delivers high signal to noise ratio and low total harmonic distortion, combined with low typical power consumption of 160mW.

Extensive on-chip features include internal voltage reference to minimise external circuitry, a programmable gain amplifier (PGA) and out of range indicator flag.

An external voltage reference can also be selected, for applications where a common system reference or precision reference is required.

The differential sample and hold input enables high common mode noise immunity and low distortion, and the PGA supports 1 and 2V maximum differential input modes plus a third mode for single-ended input signals such as composite video.

The PGA modes are selected via two external mode selection pins.

Conversion is controlled by a single clock input, and an output enable pin is provided allowing several devices to share a common bus.

The WM2152 is designed for direct IF sampling, baseband digitisation or video digitisation in applications such as portable instrumentation, digital imaging and high-speed data acquisition.

Its low average power consumption, combined with a 36uW power down mode controlled via the mode selection pins, mean the device helps meet the power budget requirements of many modern product designs including battery powered equipment.

The WM2152 is available in 28-pin TSSOP packages for commercial applications from 0 to +70C operating temperature, or industrial applications requiring -40 to +85C operation.

Back to top