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PT8214 Datasheet, PDF (5/15 Pages) Princeton Technology Corp – 8-Bit D/A Converter IC
8-Bit D/A Converter IC
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PT8214
FUNCTION DESCRIPTION
PT8214 is an 8-bit D/A Converter IC which provides 14 bits shift register for digital data storage and
channel selection. The 14 bits shift register are shown below.
Last
First
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13
D/A Converter
Channel
The D/A converter output are given in the table below.
Input data
D0 D1 D2 D3 D4 D5 D6 D7 DAC Output
0
0
0
0
0
0
0
0 ≅VSS
1 0 0 0 0 0 0 0 ≅VREF/256x1+VSS
: : : : : : : ::
: : : : : : : ::
: : : : : : : ::
0 1 1 1 1 1 1 1 ≅VREF/256x254+VSS
1 1 1 1 1 1 1 1 ≅VREF/256x255+VSS
Note: VREF=VDD-VSS
The channel selection table is given below.
Input data
D8 D9 D10 D11 D12 D13 Selected channel
0 0 0 0 0 0 Not selected
0
0
0
1
0
1
0
1
0
1
1
0
AO1 to AO30 selected
0
1
1
0
1
0
1
1
1
0
1
0
AO31 to AO36 selected
1
1
0
1
0
1
1
1
0
1
1
1
Not selected
PT8214 V1.0
-5-
January, 2006