AK4254 参数 Datasheet PDF下载

ASAHI KASEI

[AK4254]

ANALOG CHARACTERISTICS

(Ta = 25°C; AVDD=CVDD1=CVDD2=3.0V; unless otherwise specified. Note: 5, Note: 6)

Parameter

Conditions

min

Gain

Input=0.3Vp-p, 100kHz

5.3

Frequency Response

Response at 6MHz

-2.0

Input=0.3Vpp, Sin Wave

Response at 27MHz

(0dB at 100kHz)

Group Delay Distortion

|GD3MHz - GD6MHz|

Dynamic Output Signal

f=100kHz, maximum with distortion < 1.0%.

2.52

Inter channel Isolation

f=4.43MHz, 1Vp-p input

-

S/N

Reference Level = 0.7Vp-p,

-

BW= 100kHz to 6MHz.

Differential Gain

0.7Vpp 5steps modulated staircase.

-

Chrominance & burst are 280mVpp, 4.43MHz.

Differential Phase

0.7Vpp 5steps modulated staircase.

-

Chrominance & burst are 280mVpp, 4.43MHz.

Load Resistance

R1+R2 (Note: 9)

140

Load Capacitance

C1 (Note: 9)

C2 (Note: 9)

Power Supply Current

AVDD+CVDD1+CVDD2

Normal Operation

(PDN pin = “H”, Note: 7)

AVDD+CVDD1+CVDD2

Power-Down Mode

(PDN pin = “L”, Note: 8)

typ

6

-40

10

65

65

+0.4

+2.5

150

max

6.7

+2.0

-20

100

-

-

-

-

-

400

15

30

100

Units

dB

dB

dB

ns

Vpp

dB

dB

%

Degree

Ω

pF

pF

mA

μA

20

10

Note: 5. Video analog characteristics are measured at the pin directly

.

Note: 6. Input Sync Tip Level=-0.43V∼-0.14V (It is the difference with Pedestal Level and Sync Tip Level.)

Horizontal Line Sync Pulse=4.0μs

∼5.4μs,

Equalizing Pulse=2.0μs

∼2.7μs,

Serration Pulse=4.0μs

∼5.4μs

Note: 7.

VIN Black level input, no load

Note: 8. All digital input pins (P/S, I2C/SEL22, CDTI/SDA/SEL21, CCLK/SCL/SEL20, SN/SEL12, CAD1/SEL11,

CAD0/SEL10) are held at AVSS.

Note: 9. Refer to the Figure 2.

R1

75

Ω

VOUT

C2

max: 15pF

(C2)

C1

max: 400pF

(C1)

R2

75

Ω

Figure 2. Load Resistance R1+R2 and Load Capacitance C1/C2

MS0586-E-01

-6-

2007/08