ASAHI KASEI

[AK8817/18]

Rev.000

7

2007 / 03

(4) Analog Characteristics

< AVDD = 3.0 V, temperature 25

°C >

Parameter

Symbol

Min

Typ

Max

Units

DAC resolution

9

bit

DAC integral non-linearity ( error )

+/- 0.6

+/- 2.0

LSB

DAC differential non-linearity ( error )

+/- 0.4

+/- 1.0

LSB

DAC output full scale voltage

1.18

1.28

1.38

V

Note1)

DAC output offset voltage

5.0

mV

Note2)

Video Amp Output Gain

5.0

6.0

7.0

dB

Amp Input Level 1Vpp

Video Amp Full scale Level

2.0

Vpp

Note3)

Video Amp THD

-45

-51

dB

100kHz - 5.5MHz Note4)

Video Amp S/N

54

dB

100kHz - 5.5MHz Note4)

LPF Ripple

-1

+/- 0.5

+1

dB

100kHz - 5.5MHz

0dB = 100kHz input

LPF Stop Band Level

20

30

dB

27MHz

0dB = 100kHz input

LPF Group Delay

10

100

ns

|GD3MHz - GD6MHz|

On-chip reference voltage (VREF)

1.17

1.23

1.30

V

Reference voltage drift

-50

ppm/

°C

Note1) Values are when a 390 ohm output load, a 12k ohm IREF pin resistor and on-chip VREF are used.

Full scale output current is calculated as Iout = full scale output voltage ( typ. 1.28 V ) / 390 ohm = typ. 3.28 mA.

Note2) A voltage referenced to VSS when a decimal zero voltage is input to DAC.

Note3) VOUT Output Level Output Load Resistor: 150ohm, Load Capacitor: 15pF Internal Color Bar output

Note4) Output signal from DAC to which Input data corresponded 1Vpp. This signal is input to AMP.

Load resistor is 150ohm and Load capacitor is 15pF as shown bellow figure at (5) Current Consumption.

(5) Current consumption

< Operating voltage : DVDD = AVDD = PVDD = 3.0 V, Ta = +25

°C >

Parameter

Symbol

Min

Typ

Max

Units

Total power consumption

27

35

mA

Note1)

Power-down current 1

10

30

uA

Note2)

Digital part operating current 1

13

mA

Note3)

Analog part operating current 1

14

mA

Note4)

Analog part operating current 2

5.5

mA

Note5)

Analog part operating current 3

0.8

mA

Note6)

Note1) operation at 27 MHz, NTSC mode on-chip 75% color bar output is enabled and Video Amp output is “ on “ ( no

external output loads are connected except for recommended components. ). 15pF capacitors in following figure represent

PCB layout-capacitor.

SAG Compensation ON

SAG Compensation OFF

75ohm

AK8817

VOUT

SAG

75ohm

100uF

15pF

AK8817

VOUT

SAG

47uF

1uF

75ohm

75ohm

15pF

15pF

15pF

Note2) measuring conditions :

input / output settings after power-down sequence are, PDN pin is at GND level, CLKOUT and SDO output are at high

level ( power supply voltage ) with no external connection, input voltage on those input pins is 1/2 level of power supply

which are set to accept Hi-Z input at power-down, and TEST = ATPG = GND ( or left open ).

Power supplies are AVDD = DVSS = PVDD.

Each ground pin ( DVSS, AVSS, PVSS ) is always 0 V ( voltage reference ).

Note3) Operation at 27 MHz, NTSC mode on-chip 75% color bar output is enabled.

Note4) DAC ON, Video Amp On SAG Compensation On

Note5) DAC ON, Video Amp Off (SAG Compensation Off)

Note6) DAC Off, Video Amp Off (SAG Compensation Off)