CSR8635 View Datasheet(PDF) - CSR plc

Part Name

Description

Manufacturer

CSR8635

The CSR8635 QFN single-chip Bluetooth® audio ROM device targets mid-range stereo speakers and headsets.

CSR plc 

Figure 10.3 shows that an external LC filter circuit of a low-resistance series inductor, L1 (4.7µH), followed by a low

ESR shunt capacitor, C3 (2.2µF), is required between the LX_1V8 terminal and the 1.80V supply rail. Connect the

1.80V supply rail and the VDD_AUX_1V8 pin.

L1

4.7µH

C1

2.2µF

VBAT

3V3_USB

C2

2.2µF

LX

1.8V Switch-mode

Regulator

SENSE

LX_1V8

SMPS_1V8_SENSE

VSS_SMPS_1V8

1.8V Supply Rail

C3

2.2µF

To 1.35V Switch-mode

Regulator Input

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Figure 10.4 shows that an external LC filter circuit of a low-resistance series inductor L1 (4.7µH), followed by a low

ESR shunt capacitor, C3 (4.7µF), is required between the LX_1V35 terminal and the 1.35V supply rail. Connect the

1.35V supply rail and the SMPS_1V35_SENSE pin.

Production Information

© Cambridge Silicon Radio Limited 2013

Confidential Information - This Material is Subject to CSR's Non-disclosure Agreement

Page 60 of 105

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