TDA8758 Datasheet, PDF (12/24 Pages) NXP Semiconductors – YC 8-bit low-power analog-to-digital video interface

Philips Semiconductors
YC 8-bit low-power analog-to-digital video
interface
Product specification
TDA8758
Table 2 AGC output current
PWE
0
0
1
1
GATE A
0
1
0
1
DIGITAL
OUTPUT
output < 255
output > 255
output < 0
0 < output < 255
output > 255
X⁽¹⁾
output < 0
0 < output < 255
Note
1. X = don't care.
I_AGC
0 µA
+540 µA
+8 µA
−8 µA
+540 µA
0 µA
+8 µA
−8 µA
Table 4 OFY and OFC input coding
OFY (or OFC)
Y0 to Y7 (or C0 TO C7)
0
active, twos complement
1
high impedance
open circuit⁽¹⁾ active, binary
Note
1. Use C ≥ 10 pF to DGND.
Table 3 CLAMP output current
CLAMP
C
X⁽¹⁾
Y
GATE B
1
0
1
DIGITAL
OUTPUT
output < 128
output > 128
X⁽¹⁾
output < 64
64 < output
Note
1. X = don't care.
I_CLAMP
+54 µA
−54 µA
0 µA
+54 µA
−54 µA
Table 5 Output coding and ANOUTY (or ANOUTC) voltage (typical values)
STEP
Underflow
0
1
.
.
254
255
Overflow
BINARY OUTPUTS
TWOS COMPLIMENT
V_I
D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0
−
0000000010000000
2.6
0000000010000000
−
0000000110000001
−
................
−
................
−
1111111001111110
3.6
1111111101111111
−
1111111101111111
1996 Feb 01
12