tda8708a NXP Semiconductors, tda8708a Datasheet - Page 10

• Manufacturer Part Number: tda8708a
• Description: Video Analog Input Interface
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 1 Video input selection (CVBS).
Table 2 AGC output current.
Note
1. X = don't care.
2. Mode 2 can only be initialized with successive pulses
Table 5 Output coding and input voltage (typical values).
June 1994
GATE A GATE B
Video analog input interface
Underflow
I1
Overflow
0
0
1
1
on GATE A and GATE B (see Fig.5).
1
0
1
STEP
254
255
0
1
.
.
X
I0
0
1
0
1
1
0
(1)
V
V
CCA
CCA
V
output
output
output
output
output
0 < output <
248
output > 248 I
ADCIN
OUTPUT
DIGITAL
2.41 V
1.41 V
SELECTED INPUT
248 I
0
255
255 I
248 0 A
D7
0
0
0
1
1
1
.
.
+2.5 A
VIN0
VIN1
VIN2
VIN2
AGCM
AGCM
AGCM
2.5 A
2.5 A
I
D6
AGC
0
0
0
1
1
1
.
.
BINARY OUTPUTS
D5
0
0
0
1
1
1
.
.
MODE
D4
0
0
0
1
1
1
.
.
1
1
2
2
2
2
2
(2)
D3
0
0
0
1
1
1
.
.
10
D2
Table 3 CLAMP output current.
Note
1. X = don't care.
Table 4 OF input coding.
Note
1. Use C
0
0
0
1
1
1
.
.
GATE A GATE B
open circuit
X
1
0
(1)
D1
0
0
0
1
1
1
.
.
OF
0
1
D0
0
0
1
0
1
1
.
.
10 pF to DGND.
(1)
1
0
1
D7
1
1
1
0
0
0
.
.
active, two's complement
high impedance
active, binary
D6
output
output
X
output
64 < output
0
0
0
1
1
1
.
.
(1)
TWO'S COMPLEMENT
OUTPUT
DIGITAL
D5
0
0
0
1
1
1
.
.
0
64
0
D4
D0 TO D7
0
0
0
1
1
1
.
.
Product specification
D3
I
0 A
+50 A
0
0
0
1
1
1
.
.
TDA8708A
CLAMPM
I
2.5 A
50 A
CLAMP
D2
0
0
0
1
1
1
.
.
D1
0
0
0
1
1
1
MODE
.
.
1
1
2
2
2
D0
0
0
1
0
1
1
.
.