TS472_06 datasheet(4/24 Pages) STMICROELECTRONICS

Part #	TS472

Description	Very low noise microphone preamplifier with 2.0V bias output and active low standby mode

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Typical application schematic

TS472

4/24

Typical application schematic

Figure 1 shows a typical application schematic for the TS472.

Figure 1.

Application schematic (flip-chip)

Table 2.

External component descriptions

Components

Functional description

Cin+, Cin-

Input coupling capacitors that block the DC voltage at the amplifier input

terminal.

Cout+, Cout-

Output coupling capacitors that block the DC voltage coming from the

amplifier output terminal (pins C2 and D2) and determine Lower cut-off

frequency.

Rout+, Rout-

Output load resistors used to charge the output coupling capacitors Cout.

These output resistors can be represented by an input impedance of a

following stage.

Rpos, Rneg

Polarizing resistors for biasing of a microphone.

Supply bypass capacitor that provides power supply filtering.

Bypass pin capacitor that provides half-supply filtering.

C1, C2

Low pass filter capacitors allowing to cut the high frequency.

TS472 Datasheet(PDF) 4 Page - STMicroelectronics