PT8214 Datasheet, PDF (4/15 Pages) Princeton Technology Corp – 8-Bit D/A Converter IC

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8-Bit D/A Converter IC
PT8214
PIN DESCRIPTION
Pin Name
I/O
Description
DI*
I Serial data input pin
CLK*
Shift clock input pin
I Serial data input from the DI pin are inputted to the internal shift
register at the rising edge of the CLK signal.
STB*
DO
GND
Load strobe input pin
I When this pin is “High”, the shift register contents are loaded into
the decoder and 8-bit register.
Serial data output pin
O The serial data in the shift register are outputted from this pin.
This pin allows a cascade connection.
- Ground
NC
- No connection
VSS1
- D/A converter ground pin (for AO1 to AO24 outputs)
VDD1
AO12 to AO24
AO25 to AO27
- D/A converter supply voltage (for AO1 to AO24 outputs)
O D/A converter output pin #1
O D/A converter output pin #2
AO28 to AO31 O D/A converter output pin #2
VCC
-
Digital block & operational amplifier output buffer supply voltage
(for AO25 to AO36 outputs)
VSS2
AO32 to AO36
AO1 to AO11
- D/A converter ground pin (for AO25 to AO36 outputs)
O D/A converter output pin #2
O D/A converter output pin #1
Pin No.
1
2
3
4
5
6, 30
7
7
9 to 21
22 to 24
25 to 28
29
32
33 to 37
38 to 48
Note: *=DI, CLK & STB must be fixed at low level when there is no data transfer.
PT8214 V1.0
-4-
January, 2006