datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

SMP08FS View Datasheet(PDF) - Analog Devices

Part Name
Description
View to exact match
SMP08FS Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
SMP08
+12V
REF02
+12V
+5V
DIGITAL
INPUTS
4
VREFA
17
VDD
DAC8228 VOA 3
3
WR
CS
VZ
GND
1
16 15
5
WR
ADDRESS
BUS
ADDRESS
DECODE
A
11
B
10
C
9
DGND
8
INH
6
SMP08
VSS
VSS
VSS
VSS
VSS
VSS
VSS
13 CH0
14 CH1
15 CH2
12 CH3
1 CH4
5 CH5
2 CH6
4 CH7
+12V
VSS
16
7
0.1µF
CHANNEL DECODING
PIN 9 PIN 10 PIN 11 PIN 6
C
B
A
INH
CH PIN
0
0
0
0
0
13
0
0
1
0
1
14
0
1
0
0
2
15
0
1
1
0
3
12
1
0
0
0
4
1
1
0
1
0
5
5
1
1
0
0
6
2
1
1
1
0
7
4
X
X
X
1
NONE –
Figure 18. 8-Channel Multiplexed D/A Converter
Do not apply signals to the SMP08 with power off unless the
input current is limited to less than 10 mA.
TYPICAL APPLICATIONS
AN 8-CHANNEL MULTIPLEXED D/A CONVERTER
Figure 18 illustrates a typical demultiplexing function of the
SMP08. It is used to sample-and-hold eight different output
voltages corresponding to eight different digital codes from a
D/A converter. The SMP08’s droop rate of 20 mV/s requires a
refresh once every 500 ms, before the voltage drifts beyond
1/2 LSB accuracy (1 LSB of an 8-bit DAC is equivalent to
19.5 mV out of a full-scale voltage of 5 V). For a 10-bit DAC
the refresh rate must be less than 120 ms, and, for a 12-bit
system, 31 ms. This implementation is very cost effective com-
pared to using multiple DACs as the number of output channels
increases.
REV. D
–7–
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]