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Philips Semiconductors
40 Msps, 10-bit analog-to-digital
interface for CCD cameras
SYMBOL
Z
additional 8-bit control DAC
OFDOUT
(OFD) output impedance
I
OFD output current drive
OFDOUT
ADC clamp control DAC (see Fig.8)
V
ADC clamp 10-bit control DAC
DACOUT(p-p)
output voltage (peak-to-peak
value)
V
DC output voltage
DACOUT
Z
ADC clamp control DAC output
DACOUT
impedance
I
DAC output current drive
DACOUT
OFE
maximum offset error of
LOOP
DAC + ADC clamp loop
Digital outputs (f
= 40 MHz; C
CLK
V
HIGH-level output voltage
OH
V
LOW-level output voltage
OL
I
output current in 3-state mode
OZ
t
output hold time
o(h)
t
output delay time
o(d)
Serial interface
f
maximum frequency of serial
SCLK(max)
interface
Notes
1. More information about CDS related signals is available in the following figures: The clamp current for pin CPCDS is
given in Fig. 9, clamp current for pins IND and INP in Fig 10 and for clamp current for pin V
output amplitude is shown in Fig. 14
2. Noise measurement at ADC outputs: the coupling capacitor at the input is connected to ground, so that only the noise
contribution of the front-end is evaluated. The front-end operates at 18 Mpix with a line of 1024 pixels. The first 40 are
used to run CLPOB and the last 40 to run CLPDM. Data at the ADC outputs is measured during the other pixels.
The differences between the types of codes statistic is then computed; the result is the noise. No quantization noise
is taken into account as no signal is input. Figure15 gives noise figure graphs with signal input.
3. Depending on operating pixel frequency, the output voltage and capacitance must be determined according to the
output delay timings (t
2002 Oct 23
PARAMETER
= 20 pF); note 3
L
), see Fig.5.
o(d)
CONDITIONS
static
code 0
code 1023
static
code 0
code 1023
I
= 1 mA
OH
I
= 1 mA
OL
0 V < V
< V
o
CCO
C
= 20 pF; V
= 5 V
L
CCO
C
= 10 pF; V
= 5 V
L
CCO
C
= 20 pF; V
= 3 V
L
CCO
C
= 10 pF; V
= 3 V
L
CCO
C
= 20 pF; V
= 2.5 V
L
CCO
C
= 10 pF; V
= 2.5 V
L
CCO
11
Product specification
TDA8783
MIN.
TYP.
MAX.
2000
50
1
1.5
2.5
250
50
5
5
V
0.5
V
CCO
CCO
0
0.5
20
+20
8
17
23
15
21
20
29
17
25
22
33
18
28
5
in Fig 11. The CDS
ref
UNIT
A
V
V
V
A
LSB
LSB
V
V
A
ns
ns
ns
ns
ns
ns
ns
MHz
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