SP9502JS View Datasheet(PDF) - Signal Processing Technologies
Part Name
Description
MFG CO.
SP9502JS Datasheet PDF : 11 Pages
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PINOUT — 28–PIN SOIC & DIP
N.C. 1
VOUT2 2
VSS 3
VDD 4
CLR 5
Ref In 2 6
GND 7
B1/B2 8
A9
Ref In 1 10
XFER 11
WR2 12
WR1 13
CS 14
SP9502
28 N.C.
27 DB0
26 DB1
25 DB2
24 DB3
23 DB4
22 DB5
21 DB6
20 DB7
19 DB8
18 DB9
17 DB10
16 DB11
15 VOUT1
PIN ASSIGNMENTS
Pin 1 — N.C. — No Connection.
Pin 2 — VOUT 2 — Voltage Output from DAC2.
Pin 3 — V — –5V Power Supply Input.
SS
Pin 4 — V — +5V Power Supply Input.
DD
Pin 5 — CLR — Clear. Gated with WR2 (pin 12).
Active low. Clears both DAC outputs to 0V.
Pin 6 — REF IN2 — Reference Input for DAC2.
Pin 7 — GND — Ground.
Pin 8 — B1/B2 — Byte 1/Byte 2 — Selects Data
Input Format. A logic “1” on pin 8 selects the 12–
bit mode, and all 12 data bits are presented to the
DAC(s) unchanged; a logic “0” selects the 8–bit
mode, and the four LSBs are connected to the four
MSBs, allowing an 8–bit MSB–justified interface.
Pin 9 — A — Address for DAC Selection — A
logic “0” selects DAC 1; a logic “1” selects
DAC 2.
Pin 10 — REF IN1 — Reference Input for DAC1.
Pin 11 — XFER — Transfer. Gated with WR2
(pin 12); loads all DAC registers simultaneously.
Active low.
Pin 12 — WR2 — Write Input 2 — In conjunction
with XFER (pin 11), controls the transfer of data
from the input registers to the DAC registers. In
conjunction with CLR (pin 5), the DAC registers
are forced to 1000 0000 0000 and the DAC outputs
will settle to OV. Active low.
Pin 13 — WR1 — Write Input1 — In conjunction
with CS (pin 14), enables input register selection,
and controls the transfer of data from the input bus
to the input registers. Active low.
Pin 14 — CS — Chip Select — Enables writing
data to input registers and/or transferring data from
input bus to DAC registers.
Pin 15 — VOUT1 — Voltage Output from DAC1.
Pin 16 — DB11 — Data Bit 11; most significant bit.
Pin 17 — DB10 — Data Bit 10.
Pin 18 — DB — Data Bit 9.
9
Pin 19 — DB8 — Data Bit 8.
Pin 20 — DB7 — Data Bit 7.
Pin 21 — DB6 — Data Bit 6.
Pin 22 — DB — Data Bit 5.
5
Pin 23 — DB4 — Data Bit 4.
Pin 24 — DB3 — Data Bit 3.
Pin 25 — DB2 — Data Bit 2.
Pin 26 — DB1 — Data Bit 1.
Pin 27 — DB0 — Data Bit 0; LSB
Pin 28 — N.C. — No Connection.
SP9502DS/02
SP9502 Dual, 12-Bit, Voltage Output D/A Converter
4
© Copyright 1999 Sipex Corporation
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