ISD5008SI 查看數據表（PDF） - Winbond

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ISD5008SI

SINGLE-CHIP, VOICE RECORD / PLAYBACK DEVICE 4-, 5-, 6- AND 8-SECOND DURATION

Winbond 

ISD5008 Product

ANA IN (Analog Input)

The ANA IN pin is the analog input from the tele-

phone chip set. It can be switched (by the SPI bus)

to the speaker output, the array input or to various

other paths. This pin is designed to accept a nom-

inal 1.11 Vp-p when at its minimum gain (6 dB)

setting. There is additional gain available in 3 dB

steps controlled from the SPI bus, if required, up to

15 dB.

Figure 2: ANA IN Input Modes

Gain Resistor Ratio

Setting

(Rb/Ra)

00

63.9/102

01

77.9/88.1

10

92.3/73.8

11

106/60

Gain

Gain2

(dB)

0.625 –4.1

0.88 –1.1

1.25 1.9

1.77 4.9

Setting(1)

Table 4: ANA IN Amplifier Gain Settings

0TLP Input

VPP(3)

CFG0

AIG1

AIG0

Gain(2)

Array In/Out Speaker Out

VPP

VPP(4)

6 dB

1.11

0

9 dB

.785

0

12 dB

.555

1

15 dB

.393

1

0

.625

.694

2.22

1

.883

.694

2.22

0

1.250

.694

2.22

1

1.767

.694

2.22

1. Gain from ANA IN to SP+/–

2. Gain from ANA IN to ARRAY IN

3. 0TLP Input is the reference Transmission Level Point that is used for testing. This level is typically 3 dB below clipping.

4. Speaker Out gain set to 1.6 (High). (Differential)

4

Voice Solutions in Silicon™

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