TDA8709A Datasheet, PDF (5/28 Pages) NXP Semiconductors – Video analog input interface

Philips Semiconductors
Video analog input interface
Product specification
TDA8709A
FUNCTIONAL DESCRIPTION
TDA8709A is an 8-bit ADC with internal clamping and a
preamplifier with adjustable gain.
The clamping value is switched via pin 27 between
digital 16 (for R, G, B signals) and digital 128 (for
chrominance or colour difference signals). While clamping
pulse at pin 27 is logic 1, the device will adjust the
clamping level to the chosen value. The output format can
be selected between binary and two's complement at
pin 28.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
V_CCA
V_CCD
V_CCO
∆V_CC
V_I
I_O
T_stg
T_amb
T_j
analog supply voltage
digital supply voltage
TTL output supply voltage
supply voltage difference between V_CCA and V_CCD
supply voltage difference between V_CCO and V_CCD
supply voltage difference between V_CCA and V_CCO
input voltage
output current
storage temperature
operating ambient temperature
junction temperature
MIN.
−0.3
−0.3
−0.3
−0.5
−0.5
−1.0
−0.3
−
−55
0
0
MAX.
+7.0
+7.0
+7.0
+0.5
+0.5
+1.0
+7.0
+10
+150
+70
+125
UNIT
V
V
V
V
V
V
V
mA
°C
°C
°C
THERMAL CHARACTERISTICS
SYMBOL
R_{th j-a}
PARAMETER
thermal resistance from junction to ambient in free air
SOT117-1
SOT136-1
VALUE
55
70
UNIT
K/W
K/W
June 1994
5