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Surface mount test points from KOA make board testing simple and reliable, samples available from Anglia
KOA have introduced the RC series of surface mount test points, they allow customers to conveniently measure signals and voltages at various points on the PCB either during production or in the field.
 

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New demo board from STMicroelectronics helps assess low-noise microphone preamplifier with 2 V bias

 

The STEVAL-CCA023V1 is designed to evaluate the TS472 differential-input microphone preamplifier optimized for high-performance PDA and notebook audio systems. The TS472 features an adjustable gain from 0 to 40 dB with excellent power-supply and common-mode rejection ratios. The device also includes a complete shutdown function, with active low standby mode.

The board supports customization of the testing conditions, allowing the gain of the TS472 device to be adjusted, or an electret microphone to be biased either externally or using the TS472 built-in 2.0 V bias voltage.

Features and Description
  Low noise: 10 nV / √ Hz typ. equivalent input noise @ F=1 kHz
  Fully differential input/output
  2.2 V to 5.5 V single supply operation
  Low power consumption @ 20 dB: 1.8 mA
  Fast start up time @ 0 dB: 5 ms typ.
  Low distortion: 0.1% typ.
  40 kHz bandwidth @ -3 dB and adjustable gain
  Active low standby mode function (1 μA max)
  Low noise 2.0 V microphone bias output
  Available in flip-chip ECOPACK® package and QFN24 4x4 mm
  ESD protection (2 kV)
  RoHS compliant

Click here for a datasheet

For more information, or details on the full range of STMicroelectronics products available from Anglia, please call +44 (0)1945 474747 or email info@anglia.com

Alternatively, click on this link to go to the main STMicroelectronics section where you can view other news articles and product data.

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This news article was originally published in January 2011.

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28/3/11