TDA8708B Datasheet, PDF (2/24 Pages) NXP Semiconductors – Video analog input interface

Philips Semiconductors
Video analog input interface
Product specification
TDA8708B
FEATURES
• 8-bit resolution
• Sampling rate up to 32 MHz
• Binary or two’s complement 3-state TTL outputs
• TTL-compatible digital inputs and outputs
• Internal reference voltage regulator
• Power dissipation of 365 mW (typical)
• Input selector circuit (one out of three video inputs)
• Clamp and Automatic Gain Control (AGC) functions for
CVBS and Y signals
• No sample-and-hold circuit required
• The TDA8708B has no white peak control in mode 2
whereas the TDA8708A has control in modes 1 and 2
• In-range output (not TTL levels).
APPLICATIONS
• Video signal decoding
• Scrambled TV (encoding and decoding)
• Digital picture processing
• Frame grabbing.
GENERAL DESCRIPTION
The TDA8708B is an analog input interface for video signal
processing. It includes a video amplifier with clamp and
gain control, an 8-bit Analog-to-Digital Converter (ADC)
with a sampling rate of 32 MHz and an input selector.
QUICK REFERENCE DATA
SYMBOL
V_CCA
V_CCD
V_CCO
I_CCA
I_CCD
I_CCO
ILE
DLE
f_clk(max)
B
P_tot
PARAMETER
analog supply voltage
digital supply voltage
TTL output supply voltage
analog supply current
digital supply current
TTL output supply current
DC integral linearity error
DC differential linearity error
maximum clock frequency
maximum −3 dB bandwidth (AGC amplifier)
total power dissipation
MIN.
4.5
4.5
4.2
−
−
−
−
−
30
12
−
TYP.
5.0
5.0
5.0
37
24
12
−
−
32
18
365
MAX.
5.5
5.5
5.5
45
30
16
±1
±0.5
−
−
500
UNIT
V
V
V
mA
mA
mA
LSB
LSB
MHz
MHz
mW
ORDERING INFORMATION
TYPE NUMBER
TDA8708BT
NAME
SO28
PACKAGE
DESCRIPTION
plastic small outline package; 28 leads; body width 7.5 mm
VERSION
SOT136-1
1996 Nov 26
2