AM3703CUS datasheet(152/280 Pages) TI

152 / 280 page

AM3715, AM3703

SPRS616F

– JUNE 2010 – REVISED AUGUST 2011

www.ti.com

Table 5-2. Video DAC

– Dynamic Electrical Specifications(6)

PARAMET

CONDITIONS/ASSUMPTIONS

MIN

TYP

MAX

UNIT

fCLK

(1)

Output update rate

Equal to input clock frequency

MHz

Clock jitter

RMS clock jitter required in order to

assure 10-bit accuracy

Attenuation at 5.1 MHz

Corner frequency for

DC mode

1.5

signal

AC mode

Signal bandwidth

3 dB

DC mode

MHz

AC mode

Differential gain(2)

111 to 895 input code

DC mode

–5%

range

AC mode

–5%

Differential phase(2)

111 to 895 input code

DC mode

–3º

range

AC mode

–3º

SFDR

Within bandwidth 1 kHz to

fCLK = 54 MHz, fOUT = 1

DC mode

6 MHz

MHz, sine wane input,

AC mode

111 to 895 input code

range

SNR

Within bandwidth 1 kHz to

fCLK = 54 MHz, fOUT = 1

DC mode

6 MHz

MHz, sine wane input,

AC mode

256 to 768 input code

range

PSR(4)

Power supply rejection (up 100 mVpp at 6 MHz, input code 895

6(4)

to 6 MHz)

Crosstalk

Between the two video

–50

–40

channels

CLoad

TVOUT (cvideo_out1 and

Total decoupling capacity from

300

cvideo_out2) stability,

cvideo_out1 or cvideo_out2 to ground,

TVOUT decoupling

CLoad1

capacity

CTOT

TVOUT stability, total

Total decoupling capacity: CTOT = CLoad1

600

TVOUT decoupling

+ CLoad2

capacity

(1) For internal input clock information, see the DSS chapter of AM/DM37x Technical Reference Manual (literature number SPRUGN4).

(2) The differential gain and phase value is for dc coupling. Note that there is degradation for the ac coupling. The Differential Gain and

Phase are measured with respect to the gain and phase of the burst signal (

–20 to 20 IRE)

(3) The SNR value is for dc coupling.

(4) PSR measures the effect of a supply disturbance at cvideo1_out and cvideo2_out.

(5) The flat band measurement is done at 500 kHz for characterizing the attenuation at 5.1 MHz.

(6) For more information on code range definition, see Figure 5-4.

152

Video DAC Specifications

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