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TDA8786A View Datasheet(PDF) - Philips Electronics

Part NameTDA8786A Philips
Philips Electronics Philips
Description10-bit analog-to-digital interface for CCD cameras.
TDA8786A Datasheet PDF : 28 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
Philips Semiconductors
10-bit analog-to-digital interface for
CCD cameras
Product specification
TDA8786; TDA8786A
CHARACTERISTICS
VCCA = VCCD = 4.75 V; VCCO = 2.6 V; fCLK = 18 MHz; Tamb = 25 °C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
Supplies
VCCA
VCCD
VCCO
analog supply voltage
digital supply voltage
digital outputs supply
voltage
4.5
4.75
4.5
4.75
2.5
2.6
ICCA
analog supply current
83
ICCD
digital supply current
16
ICCO
digital outputs supply
CL = 20 pF on all data
1
current
outputs; ramp input
Digital inputs
CLOCK INPUT: CLK (REFERENCED TO DGND)
VIL
LOW-level input voltage
VIH
HIGH-level input voltage
IIL
LOW-level input current VCLK = 0.8 V
IIH
HIGH-level input current VCLK = 2.0 V
Zi
input impedance
fCLK = 18 MHz
Ci
input capacitance
fCLK = 18 MHz
0
2.0
1
2
2
INPUTS: CDSP1 AND CDSP2
VIL
LOW-level input voltage
VIH
HIGH-level input voltage
IIL
LOW-level input current VIL = 0.6 V
IIH
HIGH-level input current VIH = 2.2 V
0
2.2
100
0
INPUTS: SEN, STDBY, CLPCDS, CLPOPB, PBK AND CLPADC
VIL
LOW-level input voltage
VIH
HIGH-level input voltage
Ii
input current
0
2.2
2
INPUTS: SEN, SDATA AND SCLK (see Fig.14)
tsu1
SEN set-up time compared
to SCLK rising edge
4
tsu2
SDATA set-up time
compared to SCLK rising
edge
4
tsu3
SEN set-up time compared
to SCLK falling edge
4
thd3
SEN hold time compared
to SCLK rising edge
4
thd4
SDATA hold time
compared to SCLK rising
edge
4
MAX. UNIT
5.5 V
5.5 V
5.5 V
mA
mA
mA
0.8 V
VCCD V
+1
µA
20
µA
k
pF
0.6 V
VCCD V
µA
µA
0.6 V
VCCD V
+2
µA
ns
ns
ns
ns
ns
1997 Nov 17
7
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The TDA8786; TDA8786A is a 10-bit analog-to-digital interface for CCD cameras. The device includes a correlated double sampling circuit, AGC, a soft clipper circuit and a low power 10-bit Analog-to-Digital Converter (ADC) together with its reference voltage regulator.

The AGC and soft clipper circuits are controlled by on-chip DACs via a serial interface.
A 10-bit DAC controls the ADC input clamp level. A pre-blanking function is also included.
An additional DAC is provided for additional system controls; its output voltage range is 1.4 V (p-p) which is available at pin OFDOUT.

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