TDA8753 查看數據表（PDF） - Philips Electronics
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TDA8753 Datasheet PDF : 20 Pages
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Philips Semiconductors
YUV 8-bit analog-to-digital interface
Product specification
TDA8753A
FEATURES
• Triple analog-to-digital converter
• 8-bit resolution
• Sampling rate up to 20 MHz
• Power dissipation of 500 mW (typical)
• Internal clamp functions
• 4 : 1 : 1 output data encoder
• Y binary output
• U, V two's complement outputs
• Sample rate converter permits programmable horizontal
compression factors from 1 to 2
• Serial microcontroller interface
• TTL compatible inputs.
APPLICATIONS
• High-speed analog-to-digital conversion for video signal
digitizing in 4 : 1 : 1 format
• 100 Hz improved definition TV for all formats
(4/3, 16/9, 14/9 etc.).
GENERAL DESCRIPTION
The TDA8753A is a monolithic CMOS 8-bit video
low-power analog-to-digital conversion interface for YUV
signals. It converts the YUV analog input signal into 8-bit
binary coded digital words in format 4 : 1 : 1 at a sampling
rate of 20 MHz. All analog signal inputs are clamped.
The device includes a digital sample rate converter for
variable compression with a factor 1 to 2.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
VDDA
VDDD
IDDA
IDDD
INL
DLE
SNR
fclk
Ptot
analog supply voltage
4.75
digital supply voltage
4.75
analog supply current
−
digital supply current
−
integral non-linearity
fclk = 16 MHz; ramp input
−
differential non-linearity fclk = 16 MHz; ramp input; Y
−
fclk = 16 MHz; ramp input; U and V −
signal-to-noise ratio
note 1
43
without harmonics
maximum conversion
20
rate
total power dissipation note 2
−
5.0
5.25
5.0
5.25
55
63
45
55
±0.75 −
±0.5 0.75
±0.6 ±0.9
−
−
V
V
mA
mA
LSB
LSB
LSB
dB
−
−
MHz
500
650
mW
Notes
1. The signal-to-noise ratio without harmonics is measured using a 16 MHz clock frequency. This value is given for a
4.43 MHz input frequency on the Y channel (1.5 MHz on the U and V channels).
2. The external resistor (between VDDA and Iref) fixing internal static currents influences Ptot. The value of the resistor
should be 5.6 kΩ (5%).
ORDERING INFORMATION
TYPE
NUMBER
TDA8753A
NAME
SDIP42
PACKAGE
DESCRIPTION
plastic shrink dual in-line package; 42 leads (600 mil)
VERSION
SOT270-1
1996 Jan 12
2
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