TDA8787 Philips Semiconductors, TDA8787 Datasheet - Page 8

• Manufacturer Part Number: TDA8787
• Description: 10-bit/ 3.0 V analog-to-digital interface for CCD cameras
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1998 Oct 15
Correlated Double Sampling (CDS)
V
V
I
t
t
t
Amplifier
DR
Analog-to-Digital Converter (ADC)
LE
LE
Total chain characteristics (CDS + AGC + ADC)
f
t
t
t
t
V
N
O
V
i(IN)
CDS(min)
h(IN-SHP)
h(IN-SHD)
pix(max)
CLKH
CLKL
d(SHD-CLK)
su(PBK-CLK)
G
i(CDS)(p-p)
reset(max)
i(IN)
n(i)(eq)(rms)
SYMBOL
tot(rms)
10-bit, 3.0 V analog-to-digital interface for
CCD cameras
CCD(max)
i
d
AGC
AGC
maximum peak-to-peak
CDS input amplitude
(video signal)
maximum CDS input reset
pulse amplitude
input current into pin IN
(pin 4)
CDS control pulses
minimum active time
CDS input hold time
(pin IN) compared to
control pulse SHP
CDS input hold time
(pin IN) compared to
control pulse SHD
AGC dynamic range
maximum AGC gain step
integral linearity error
differential linearity error
maximum pixel frequency
CLK pulse width HIGH
CLK pulse width LOW
time delay between
SHD and CLK
set-up time of PBK
compared to CLK
video input dynamic signal
for ADC full-scale output
total output noise (RMS
value)
maximum offset between
CCD floating level and
CCD dark pixel level
equivalent input noise
voltage (RMS value)
PARAMETER
V
V
at floating gate level
video input = V
2 LSB error at ADC output
V
T
V
T
f
f
see Fig.9
AGC code = 00
AGC code = 383
see Fig.8
pix
pix
amb
amb
CC
CC
CCA
CCA
AGC gain = 0 dB
AGC gain = 9 dB
= 18 MHz; ramp input
= 18 MHz; ramp input
= 2.85 V
= 25 C; see Fig.9
= 25 C; see Fig.9
= V
= V
3.0 V
CONDITIONS
CCD
CCD
= 30 V;
= 30 V;
i(CDS)(p-p)
8
;
650
800
500
11
3
3
18
15
15
10
10
800
12.7
1
0.3
70
MIN.
15
5
5
36
0.25
0.8
110
1.3
0.5
TYP.
Preliminary specification
+1
7
7
+0.3
+70
TDA8787
MAX.
2.5
0.9
mV
mV
mV
ns
ns
ns
dB
dB
LSB
LSB
MHz
ns
ns
ns
ns
mV
mV
LSB
LSB
mV
UNIT
A
V