TDA8784 datasheet(8/28 Pages) PHILIPS

8 / 28 page

1999 Sep 21

Philips Semiconductors

Product speciﬁcation

18 Msps, 10-bit analog-to-digital

interface for CCD cameras

TDA8784

CHARACTERISTICS

VCCA =VCCD =5V; VCCO =3V; fCLK = 18 MHz; Tamb =25 °C; unless otherwise speciﬁed.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supplies

VCCA

analog supply voltage

4.75

5.25

VCCD

digital supply voltage

4.75

5.25

VCCO

digital outputs supply voltage

2.5

5.25

ICCA

analog supply current

−

ICCD

digital supply current

−

ICCO

digital outputs supply current

CL = 20 pF on all data outputs;

ramp input

−

Digital inputs

CLOCK INPUT: CLK (REFERENCED TO DGND)

VIL

LOW-level input voltage

−

0.8

VIH

HIGH-level input voltage

2.0

−

VCCD

IIL

LOW-level input current

VCLK = 0.8 V

−1

−

µA

IIH

HIGH-level input current

VCLK = 2.0 V

−−

µA

input impedance

fCLK = 18 MHz

−

Ω

input capacitance

fCLK = 18 MHz

−

INPUTS: SHP AND SHD

VIL

LOW-level input voltage

−

0.8

VIH

HIGH-level input voltage

2.0

−

VCCD

IIL

LOW-level input current

VIL = 0.6 V

−−6

−µA

IIH

HIGH-level input current

VIH = 2.2 V

−

−µA

INPUTS: SEN, SCLK, SDATA, OE, STDBY, CLPDM, CLPOB AND CLPADC

VIL

LOW-level input voltage

−

0.8

VIH

HIGH-level input voltage

2.0

−

VCCD

input current

−2

−

µA

Correlated Double Sampling (CDS)

Vi(CDS)(p-p)

CDS input amplitude

(peak-to-peak value)

−

400

1200

ICPCDS,INP,IND input current pins 8, 46

and 47

−2

−

µA

tCDS(min)

CDS control pulses minimum

active time

fi(CDS1,2) =fCLK(pix);

Vi(CDS) = 1200 mV (p-p)

black-to-white transition in

1 pixel (

±1 LSB typ.);

fcut(CDS) = 40 MHz;

fcut(AGC) = 40 MHz

−−

thd1

hold time INP compared to

control pulse SHP

see Fig.5

−

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