AK4635 datasheet(8/81 Pages) AKM

8 / 81 page

[AK4635]

Rev. 0.6

2007/10

- 8 -

Parameter

Min

Typ

max

Units

Speaker-Amp Characteristics: SDTI

SPP/SPN pins, ALC2 bit = “0”, SPKG bit = “0”, CL = 3μF, Rseries = 10Ω x 2,

BTL, SVDD = 3.8V

Output Voltage (0dBFS)

(Note 12)

2.5

Vrms

S/(N+D) (Note 13)

Output Noise Level (Note 13)

-68

dBV

Load Impedance (Note 14)

Load Capacitance

μF

V Input Characteristics:

Maximum Input Voltage (Note 17)

1.2

Vpp

Pull Down Current

1.0

μA

V Output Characteristics:

Output Gain

VIN = 100kHz (GCA = 0dB) (Note 18)

TBD

6.0

TBD

Maximum Output

at DC output

TBD

2.52

Vpp

Voltage

(Note 18)

at Sag Compensation Output

100

μF+4.7μF, AVDD ≥ 3.0 V

2.4

Vpp

at Sag Compensation Output

μF+4.7μF, AVDD ≥ 3.1V

2.4

Vpp

Clamp Voltage

at DC output (Note 18)

S/N

BW = 100kH

∼ 6MHz

(Note 18)

Secondary Distortion VIN = 3.58MHz, 1.0Vpp (Sin Wave)

(Note 18, Note 19)

-45

Load Resistance

140

150

Load Capacitance

CL1 (Figure 4)

CL2 (Figure 5)

CL3 (Figure 4, Figure 5) (Note 20)

400

LPF

Frequency Response

Response at 6.75MHz

TBD

-0.5

Input=1.26Vpp, Sin Wave

(0dB at 100kHz)

Response at 27MHz

-40

TBD

Group Delay

|GD3MHz

− GD6MHz|

100

GCA Characteristics:

Step Size

GCA =

−1.0dB ∼ +10.5dB

TBD

0.5

TBD

Power Supplies

Power Up (PDN pin = “H”)

All Circuit Power-up Except Video Amp (Note 21)

AVDD+DVDD

fs = 8kHz

fs = 48kHz

TBD

SVDD: Speaker-Amp Normal Operation (No Output)

SVDD=3.3V

1.5

TBD

Video Amp Power-up : (Note 22) (Note 24)

AVDD+DVDD

TBD

All Circuit Power-up : (Note 23) (Note 24)

AVDD+DVDD

fs = 48kHz

TBD

Power Down (PDN pin = “L”) (Note 25)

AVDD+DVDD+SVDD

TBD

μA

Note 7. The voltage difference between MICP and MICN pins. AC coupling capacitor should be inserted in series at each

input pin. Full-differential mic input is not available at MGAIN3-0 bits = “1000” or “0000”. Maximum input

voltage of MICP and MICN pins are proportional to AVDD voltage, respectively.

Vin = |(MICP)

− (MICN)| = 0.069 x AVDD(max)@MGAIN3-0 bits = “0001”,

0.035 x AVDD(max)@MGAIN3-0 bits = “0010”, 0.017 x AVDD(max)@MGAIN3-0 bits = “0011”,

0.218x AVDD(max)@MGAIN3-0 bits = “0100”, 0.097x AVDD(max)@MGAIN3-0 bits = “0101”,

0.048x AVDD(max)@MGAIN3-0 bits = “0110”, 0.024x AVDD(max)@MGAIN3-0 bits = “0111”,

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