1998 Oct 15

13

Philips Semiconductors

Preliminary specification

10-bit, 3.0 V analog-to-digital interface for

CCD cameras

TDA8787

Fig.8 Total noise performance as a function of AGC gain.

Noise measurement at ADC outputs:

Coupling capacitor at input is grounded, so only noise contribution of the front-end is evaluated. Front-end works at 18 Mpixels with line of 1024 pixels

whose first 40 are used to run CLPOB and the last 40 for CLPDM. Data at the ADC outputs are measured during the other pixels. As a result of this,

the standard deviation of the codes statistic is computed, resulting in the noise. No quantization noise is taken into account as no signal is inputted.

handbook, halfpage

64

0

192

320

128

AGC code

256

383

FCE098

Ntot(rms)

(LSB)

10

8

6

4

2

0