Datasheet > ISD4004-16MSIR

ISD4004-16MSIR

更新时间： 2022-09-29 19:43:03

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
34页	417K
描述
IC VOICE REC/PL 16MIN IN 28SOIC

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ISD4004-16MSIR 数据手册

ISD4004

PIN NAME

PIN #

FUNCTION

SOIC /

PDIP

ANA IN-

Inverting Analog Input: This pin transfers the signal into the device during

recording via differential-input mode.

In this differential-input mode, a 16 mVp-p maximum input signal should be

capacitively coupled to ANA IN- for optimal signal quality, as shown in Figure

1: ANA IN Modes. This capacitor value should be equal to that used on ANA

IN+ pin. The input impedance at ANA IN- is normally 56 KΩ.

In the single-ended mode, ANA IN- should be capacitively coupled to V_SSA

through a capacitor equal to that used on the ANA IN+ pin.

ANA IN+

Non-Inverting Analog Input: This pin is the non-inverting analog input that

transfers the signal to the device for recording. The analog input amplifier

can be driven single ended or differentially.

In the single-ended input mode, a 32 mVp-p (peak-to-peak) maximum signal

should be capacitively connected to this pin for optimal signal quality. The

external capacitor associated with ANA IN+ together with the 3 KΩ input

impedance are selected to give cutoff at the low frequency end of the voice

passband.

In the differential-input mode, the maximum input signal at ANA IN+ should

be 16 mVp-p capacitively coupled for optimal signal quality. The circuit

connections for the two modes are shown in Figure 1.

V_CCA/ V_CCD

18 / 27 Supply Voltage: To minimize noises, the analog and digital circuits in the

ISD4004 devices use separate power busses. These +3V busses are

brought out to separate pins and should be tied together as close to the

supply as possible. In addition, these supplies should be decoupled as close

to the package as possible.

RAC

Row Address Clock: This is an open drain output that provides the signal

of a ROW with a 200 ms period for 8 KHz sampling frequency. (This

represents a single row of memory.) This signal stays HIGH for 175 ms and

stays LOW for 25 ms when it reaches the end of a row.

The RAC pin stays HIGH for 109.37 µsec and stays LOW for 15.63 µsec in

Message Cueing mode (see Message Cueing section for detailed

description). Refer to the AC Parameters table for RAC timing information

at other sample rates.

When a record command is first initiated, the RAC pin remains HIGH for an

extra T_RACLperiod. This is due to the need of loading the internal sample

and hold circuits in the device. This pin can be used for message

management techniques.

A pull-up resistor is required to connect this pin to other device.

Interrupt: This is an open drain output pin. This pin goes LOW and stays

LOW when an Overflow (OVF) or End of Message (EOM) marker is

detected. Each operation that ends with an EOM or OVF will generate an

interrupt. The interrupt will be cleared the next time an SPI cycle is initiated.

The interrupt status can also be read by an R_INTinstruction.

INT

A pull-up resistor is required to connect this pin to other device.

Overflow Flag (OVF) – The Overflow flag indicates that the end of memory

has been reached during a record or playback operation.

End of Message (EOM) – The End of Message flag is set only during

playback operation when an EOM is found. There are eight EOM flag

position options per row.

Jun 28, 2021

Page 7 of 34

Rev1.5

1...4 5 678 9 10...34

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与ISD4004-16MSIR相关器件

型号	品牌	描述	获取价格	数据表
ISD4004-16MSY	NUVOTON	SINGLE-CHIP, MULTIPLE-MESSAGES VOICE RECORD/PLAYBACK DEVICES 8-, 10-, 12-, AND 16-MINUTE D	获取价格
ISD4004-16MSY	WINBOND	Speech Synthesizer With RCDG, 960s, CMOS, PDSO28, 0.300 INCH, LEAD FREE, PLASTIC, SOIC-28	获取价格
ISD4004-16MSYI	WINBOND	Speech Synthesizer With RCDG, 960s, CMOS, PDSO28, 0.300 INCH, LEAD FREE, PLASTIC, SOIC-28	获取价格
ISD4004-16MSYI	NUVOTON	SINGLE-CHIP, MULTIPLE-MESSAGES VOICE RECORD/PLAYBACK DEVICES 8-, 10-, 12-, AND 16-MINUTE D	获取价格
ISD4004-16MX	WINBOND	Single-Chip Voice Record/Playback Devices 8-, 10-, 12-, and 16-Minute Durations	获取价格
ISD4004-16MX	NUVOTON	SINGLE-CHIP, MULTIPLE-MESSAGES VOICE RECORD/PLAYBACK DEVICES 8-, 10-, 12-, AND 16-MINUTE D	获取价格

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