LC89080Q Sanyo, LC89080Q Datasheet - Page 5

• Manufacturer Part Number: LC89080Q
• Description: Video Signal 3-Channel 8-Bit D/A Converter
• Manufacturer: Sanyo

LC89080 Operation
The LC89080 and LC89080Q include three current-matrix D/A converters on chip. These D/A converters each have 63
basic current cells (with current weight I) and two weighted current cells (I/2 and I/4). These current cells are turned on
or off according to the input digital code (a binary code). The sum of these currents is output to the output pins (IO and
IOB) and the output current is converted to a voltage by the output resistor (R
shows the ideal relationship between the digital input and the analog output when V
Sample Application Circuit: LC89080
MSB
D1
0
0
0
0
1
1
1
1
D2
0
0
0
1
0
1
1
1
D3
0
0
0
1
0
1
1
1
Digital input code
D4
0
0
0
1
0
1
1
1
D5
0
0
0
1
0
1
1
1
D6
0
0
0
1
0
1
1
1
LC89080, 89080Q
D7
0
0
1
1
0
0
1
1
LSB
D8
0
1
0
1
0
1
0
1
(positive output)
O
0.004
0.008
0.496
0.500
0.988
0.992
0.996
) to acquire the analog output. The table
IO
0
REF
Analog output voltage
IN is 1 V.
(negative output)
0.996
0.992
0.988
0.500
0.496
0.008
0.004
IOB
0
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