TDA8706 Datasheet, PDF (2/16 Pages) NXP Semiconductors – 6-bit analog-to-digital converter with multiplexer and clamp

Philips Semiconductors
6-bit analog-to-digital converter with
multiplexer and clamp
Preliminary specification
TDA8706
FEATURES
• 6-bit resolution
• Binary 3-state TTL outputs
• TTL compatible digital inputs
• 3 multiplexed video inputs
• Luminance and colour difference clamps
• Internal reference
• 300 mW power dissipation
• 20-pin plastic package.
APPLICATIONS
• General purpose video applications
• Y, U and V signals
• Colour Picture-in-Picture (PIPCO) for TV
• Videophone
• Frame grabber.
GENERAL DESCRIPTION
The TDA8706 is a monolithic bipolar 6-bit
Analog-to-Digital Converter (ADC) with a 3 analog input
multiplexer and a clamp. All digital inputs and outputs are
TTL compatible. Regulator with good temperature
compensation.
FUNCTIONAL DESCRIPTION
The TDA8706 is a ‘like-flash’ converter which produces an
output code in one clock period. The device can withstand
a duty clock cycle of 50 to 66.6% (clock HIGH).
Luminance clamping level is fitted with 00H code (output
000000). Chrominance clamping level is fitted with 20H
code (output 100000).
QUICK REFERENCE DATA
Measured over full voltage and temperature ranges.
SYMBOL
PARAMETER
V_CCA
V_CCD
I_CCA
I_CCD
ILE
DLE
f_CLK
P_tot
T_amb
analog supply voltage (pin 2)
digital supply voltage (pin 10)
analog supply current (pin 20)
digital supply current (pin 10)
integral linearity error
DC differential linearity error
maximum clock frequency
total power dissipation
operating ambient temperature range
MIN.
4.5
4.5
−
−
−
−
20
−
0
TYP.
5.0
5.0
32
28
−
−
−
300
−
MAX.
5.5
5.5
39
37
±0.75
±0.5
−
418
+70
UNIT
V
V
mA
mA
LSB
LSB
MHz
mW
°C
ORDERING INFORMATION
TYPE
NUMBER
TDA8706
TDA8706T
NAME
DIP20
SO20
PACKAGE
DESCRIPTION
plastic dual in-line package; 20 leads (300 mil)
plastic small outline package; 20 leads; body width 7.5 mm
VERSION
SOT146-1
SOT163-1
1996 Aug 20
2