SAA7167 查看數據表（PDF） - Philips Electronics
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SAA7167 Datasheet PDF : 20 Pages
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Philips Semiconductors
YUV-to-RGB Digital-to-Analog
Converter (DAC)
Preliminary specification
SAA7167
FEATURES
• On-chip mixing of digital video data and analog
RGB signals
• Supports video input format of YUV 4 : 2 : 2, 4 : 1 : 1,
2 : 1 : 1 andRGB 5 : 6 : 5
• Video input rate up to 50 MHz
• Allows for both binary and two’s complement video
input data
• Triple 8-bit DACs for video output
• Built-in voltage output amplifier
• Provide keying control with external key and internal
8-bit, 2 × 8-bit and 3 × 8-bit pixel colour key
• Programmable via the I2C-bus
• 5 V CMOS device; LQFP48 package.
GENERAL DESCRIPTION
The SAA7167 is a mixed-mode designed IC containing a
video data path, keying control block, analog mixer, and a
voltage output amplifier, capable of converting digital video
data to analog RGB video, and then mixing video and
external analog RGB inputs.
The video data path contains a data re-formatter,
YUV-to-RGB colour space matrix as well as triple DACs for
video data processing. An analog mixer performs
multiplexing between DAC outputs of the video path and
external analog RGB inputs.
The final analog outputs are buffered with built-in voltage
output amplifiers to provide the direct driving capability for
a 150 Ω load. Figure 1 shows the overall block diagram.
The operation of SAA7167 is controlled via the I2C-bus.
QUICK REFERENCE DATA
SYMBOL
VDDD
VDDA
Tamb
PARAMETER
digital supply voltage
analog supply voltage
operating ambient temperature
MIN.
4.75
4.75
0
MAX.
5.25
5.25
70
UNIT
V
V
°C
ORDERING INFORMATION
TYPE
NUMBER
SAA7167
PACKAGE
NAME
DESCRIPTION
LQFP48 plastic low profile quad flat package; 48 leads; body 7 × 7 × 1.4 mm
VERSION
SOT313-2
1995 Nov 03
2
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