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Nuvoton ISD-DEMO8101 User Manual

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The ISD-DEMO8101 is a SOP8 demo board for ISD8101 series. It is available to demonstrate
basic functionality and to make it easy to try different configurations of components and
component values.
In the standard configuration, there are no pins on any of the input/output pads on the PCB, and
may be either soldered with wires or jumper pins. As a fast way to test, it is found that the larger
size "E-Z Hook" style clip lead probe wires can attach easily to the holes around the outside edge
of the PCB.
The picture below illustrates all the input controls and BTL speaker output.
JON
R10
Sept, 2010
Arrow.com.
Downloaded from
ISD-DEMO8101 User's Manual
JCE
JSE
VDD
VSS
CE
Point
Power
Figure 1: ISD-DEMO8101EVB Pins and Jumpers Definition
R6
R3
SPN
SPP
R4
Speaker
Rev 1.0
Ground
ACP
ACN
Ground
R1
Page 1 / 8

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Summary of Contents for Nuvoton ISD-DEMO8101

  • Page 1 ISD-DEMO8101 User’s Manual The ISD-DEMO8101 is a SOP8 demo board for ISD8101 series. It is available to demonstrate basic functionality and to make it easy to try different configurations of components and component values. In the standard configuration, there are no pins on any of the input/output pads on the PCB, and may be either soldered with wires or jumper pins.
  • Page 2 Figure 2: ISD-DEMO8101EVB Possible Connections Hardware Connections:  Connect an 8Ω or larger loading speaker to SPP and SPN.  Connect a power supply to the related terminals. Please ensure the polarity of the power is correct to avoid any damages to the ISD8101 device. ...
  • Page 3 Operations: Standalone Operations: Below are four common ways that parts such as the ISD8101 are used in audio circuits. To use this user guide, it is best to first identify which of these configurations most closely matches the desired application scenario. Best performance is always achieved by using the differential configuration, and when this can be used, difficult noise/pop/click issues can be most reduced.

  • Page 4: Application Schematic

    Application Schematic: 0.1uF Cbulk 0 - 50k 5.5k C1 value range: 10uF to 100uF 100uf is preferred 0.01uF -1uF 5.5k VREF 0.1uF-4.7uF Bias External Generator V >1.1V = Controller Enabled ISD8101 Figure 3: SINGLE-ENDED DESIGN CONTROLLED BY CHIP ENABLE CASE 0.1uF Cbulk 0 - 50k...
  • Page 5 Figure 5: Differential Input Design Controlled by Chip Enable. Differential inputs are used, and are best such as when filtering a PWM (Pulse Width Modulated) signal and handling other difficult signal input design requirements. An external controller manages Chip Enable. Connect jumper JCE, and then CE depends on the CE point control voltage.
  • Page 6 Vinv 0.1uF 0.1uF Cbulk 5.5k C1 value range: 10uF to 100uF 100uf is preferred 0.01uF 5.5k Vinp 0.1uF VREF 0.1uF-4.7uF Bias External Generator V >1.1V = Controller Enabled ISD8101 Figure 5: DIFFERENTIAL INPUT DESIGN CONTROLLED BY CHIP ENABLE CASE Vinv 0.1uF 0.1uF Cbulk...
  • Page 7 EVB Schematic: jumper PWR1 PWR2 VDD1 VDD2 0-ohm C3-NS C4-NS 100uF 0.1uF 33pF 10pF VSS1 VSS2 DCN1 DCN2 ACN1 R12-NS tINV ACN2 C12-NS tVDD LPN1 50k 1% 0-ohm 0-ohm SPN1 LPN2 C11-NS 22pF SPN2 VREF jumper R14-NS C8-NS R7-NS C5-NS Vref SPP1 C14-NS...

  • Page 8: Version History

    Nuvoton customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Nuvoton for any damages resulting from such improper use or sales.