AKD4634 datasheet(7/77 Pages) AKM

Part #	AKD4634

Description	16-Bit Mono CODEC with ALC & MIC/SPK-AMP

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Manufacturer	AKM [Asahi Kasei Microsystems]

Direct Link	http://www.akm.com

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[AK4634]

Rev. 0.5

2007/10

- 7 -

ANALOG CHRACTERISTICS

(Ta=25

°C; AVDD = DVDD = SVDD=3.3V; VSS1-3 =0V; fs=8kHz, BICK=64fs; Signal Frequency=1kHz; 16bit Data;

Measurement frequency=20Hz

∼ 3.4kHz; EXT Slave Mode; unless otherwise specified)

Parameter

min

typ

max

Units

MIC Amplifier: MIC, LIN pins ; MDIF bit = “0”; (Single-ended input)

Input Resistance

20

30

40

k

Ω

Gain

(MGAIN3-0 bits = “0000”)

-

0

-

dB

(MGAIN3-0 bits = “0001”)

-

20

-

dB

(MGAIN3-0 bits = “0010”)

-

26

-

dB

(MGAIN3-0 bits = “0011”)

-

32

-

dB

(MGAIN3-0 bits = “0100”)

-

10

-

dB

(MGAIN3-0 bits = “0101”)

-

17

-

dB

(MGAIN3-0 bits = “0110”)

-

23

-

dB

(MGAIN3-0 bits = “0111”)

-

29

-

dB

(MGAIN3-0 bits = “1000”)

-

3

-

dB

(MGAIN3-0 bits = “1001”)

-

6

-

dB

MIC Amplifier: MICP, MICN pins ; MDIF bit = “1”; (Full-differential input)

Input Voltage

(MGAIN3-0 bits = “0001”)

-

0.228

Vpp

(Note 6)

(MGAIN3-0 bits = “0010”)

-

0.114

Vpp

(MGAIN3-0 bits = “0011”)

-

0.057

Vpp

(MGAIN3-0 bits = “0100”)

-

0.720

Vpp

(MGAIN3-0 bits = “0101”)

-

0.322

Vpp

(MGAIN3-0 bits = “0110”)

-

0.161

Vpp

(MGAIN3-0 bits = “0111”)

-

0.080

Vpp

(MGAIN3-0 bits = “1001”)

-

1.14

Vpp

MIC Power Supply: MPI pin

Output Voltage

(Note 7)

TBD

2.64

TBD

V

Load Resistance

2

-

k

Ω

Load Capacitance

-

30

pF

ADC Analog Input Characteristics: MIC/LIN

ADC, MIC Gain=20dB, IVOL=0dB, ALC1bit = “0”

Resolution

-

16

Bits

Input Voltage (MIC Gain=20dB, Note 8)

TBD

0.198

TBD

Vpp

S/(N+D)

(

−1dBFS) (Note 9)

TBD

84

-

dB

D-Range

(

−60dBFS)

TBD

86

-

dB

S/N

TBD

86

-

dB

DAC Characteristics:

Resolution

16

Bits

Mono Line Output Characteristics: AOUT pin, DAC

→ AOUT, RL=10kΩ

Output Voltage (Note 10) LOVL bit = “0”

TBD

1.98

TBD

Vpp

LOVL bit = “1”

TBD

2.50

TBD

Vpp

S/(N+D)

(0dBFS) (Note 9)

TBD

85

-

dB

D-Range

(-60dBFS)

TBD

93

-

dB

S/N

TBD

93

-

dB

Load Resistance

10

-

k

Ω

Load Capacitance

-

30

pF

Speaker-Amp Characteristics: SDTI

SPP/SPN pins, ALC2 bit = “0”, SPKG bit = “0”, RL=8Ω + 10μH,

BTL = SVDD=3.3V

Output Power (0dBFS)

(Note 11)

-

400

-

mW

S/(N+D)

400mW output

-

20

-

dB

150mW output

-

55

-

dB

Output Noise Level

TBD

-80

-

dBV

Load Resistance

8

-

Ω

Load Capacitance

-

30

pF

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AKD4634 Datasheet(PDF) 7 Page - Asahi Kasei Microsystems

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