Data brief
For further information contact your local STMicroelectronics sales office.
August 2009 Doc ID 16138 Rev 1 1/4
4
STEVAL-CCA023V1
Demonstration board for low noise microphone preamplifier
with 2 V bias based on the TS472
Features
■ 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 @ 0dB: 5 ms typ.
■ Low distortion: 0.1% typ.
■ 40 kHz bandwidth @ -3 dB and adjustable gain
■ Active low standby mode function (1µA 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
Description
The STEVAL-CCA023V1 demonstration board is
designed as an evaluation platform for the TS472
low noise microphone preamplifier with 2.0 V bias
and 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.
STEVAL-CCA023V1
www.st.com
