APR9301-V2-1 View Datasheet(PDF) - APLUS INTEGRATED CIRCUITS

Part Name

Description

Manufacturer

APR9301-V2-1

for Single 20 to 30 Second Message Single-Chip Voice Recording & Playback Device

APLUS INTEGRATED CIRCUITS 

APLUS

APR9301-V2

Figure 4 shows the same application using external

microphone biasing instead of the microphone amplifier on

the APR9301-V2 , thus bypassing the preamplifier portion

of the chip function.

Figure 4 Sample Application Using External Microphone Biasing

NC

1

NC

2

NC

3

NC

4

NC

5

/CE

6

OscR

7

NC

8

52K

NC

9

NC

10

NU1

11

VSS

12

SP+

13

SP-

14

28

VCCD

27

/R e cL

26

VSSD

25

/LED

24

NC

23

/P la yE

22

NC

21

NC

20

A n a In

19

NC

18

NC

17

NC

16

VccA_R

15

VccA_L

0.1 µF

VCC(6VDC)

2K

VCC

0.1µF

47µF

8 Ohm Speaker

VCC

10K

100K

T1

VCC

1K

22µF

R2

0.1uF

Electret

M icrophone

Notes:

NC = No Connect (must be floating).

Pins 23 and 27 have internal pull-up resistors.

The typical sampling frequency is 6.4 kHz with OscR = 52 kW.

NPN bipolar transistor, T1 model #MPS3904 or equivalent.

R1 and R2 are recommended to be 30 kW and 10 kW, respectively, for typical applications.

Substrate should be connected to GND.

Electrical Characteristics

Tables 2 through 4 list Absolute Maximum Ratings,

Recommended DC Characteristics, and recommended

Analog Characteristics for the APR9301-V2 device.

Absolute Maximum Ratings

Stresses greater than those listed in Table 2 may cause

permanent damage to the device. These specifications

represent a stress rating only. Operation of the device at

these or any other conditions above those specified in the

recommended DC Characteristics or recommended Analog

Characteristics of this specification is not implied. Operation

of the device at maximum conditions for extended periods

may affect reliability.

Page 4

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