Moteur de recherche de fiches techniques de composants électroniques
  French  ▼

Delete All
ON OFF
ALLDATASHEET.FR

X  

Preview PDF Download HTML

SMP9517 Fiches technique(PDF) 2 Page - Summit Microelectronics, Inc.

No de pièce SMP9517
Description  Nonvolatile DACPOT™ Electronic Potentiometer With Debounced Push Button Interface
Download  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  SUMMIT [Summit Microelectronics, Inc.]
Site Internet  http://www.summitmicro.com
Logo SUMMIT - Summit Microelectronics, Inc.

SMP9517 Fiches technique(HTML) 2 Page - Summit Microelectronics, Inc.

  SMP9517 Datasheet HTML 1Page - Summit Microelectronics, Inc. SMP9517 Datasheet HTML 2Page - Summit Microelectronics, Inc. SMP9517 Datasheet HTML 3Page - Summit Microelectronics, Inc. SMP9517 Datasheet HTML 4Page - Summit Microelectronics, Inc. SMP9517 Datasheet HTML 5Page - Summit Microelectronics, Inc. SMP9517 Datasheet HTML 6Page - Summit Microelectronics, Inc. SMP9517 Datasheet HTML 7Page - Summit Microelectronics, Inc. SMP9517 Datasheet HTML 8Page - Summit Microelectronics, Inc.  
Zoom Inzoom in Zoom Outzoom out
 2 / 8 page
background image
2
SMP9517
SUMMIT MICROELECTRONICS, Inc.
2035 3.0 5/10/00
Analog Section
The SMP9517 is an 7-bit, voltage output digital-to-analog
converter (DAC). The DAC consists of a resistor network
that converts 7-bit digital values into equivalent analog
output voltages in proportion to the applied reference
voltage.
Reference Inputs
The voltage differential between the VL and VH inputs sets
the full-scale output voltage range. VL must be equal to or
greater than ground (a positive voltage). VH must be
greater than VL and less than or equal to VDD. See
specifications for guaranteed operating limits.
Output Buffer Amplifier
The voltage output is from a precision unity-gain follower
that provides a rail-to-rail output swing.
Digital Interface
The interface provides simple pushbutton control of an
up/down counter that drives the DAC. The DAC output is
a ratiometric voltage output.
UP# is an active low pushbutton input. An internal pull-up
resistor, with nominal value of 50k
Ω, eliminates an exter-
nal resistor. A 30ms debounce period is included in the
input timing to prevent multiple pulsing of the counter.
Either a switch closure to ground or a low logic level will,
after the debounce time, change the potentiometer tap
position. UP# moves the output voltage towards the VH
reference input.
If the UP# pushbutton is kept depressed the counter will
continue to increment at the rate of one count every
250ms for one second. After one second the counter
increments faster, one count every 50ms, until the
pushbutton is released. Changes to the DAC output using
the UP# input do not alter the data stored in EEPROM.
PINOUT
DWN# is an active low pushbutton input that decrements
the counter and moves the potentiometer output voltage
towards the VL reference input. The DWN# control input
also includes an internal 50k
Ω pull-up resistor and a 30ms
debounce period to prevent multiple pulsing. A low logic
level will also change the potentiometer tap position after
the debounce period.
If the DWN# pushbutton is kept depressed the counter
continues to decrement at the rate of one count every
250ms for one second. After one second the counter
decrements at one count every 50ms until the pushbutton
is released. Changes to the DAC output using the DWN#
input do not alter the data stored in EEPROM.
STR# This input can be used in two ways:
1) If the input is tied low, then AUTOSTORE is enabled.
When VDD powers down, an automatic store cycle
takes place that updates the nonvolatile EEPROM
memory.
2) STR# is an active low pushbutton input that also
updates the nonvolatile memory.
The input is
debounced but does not have an internal pull-up
resistor. For every valid push the SMP9517 will store
the current potentiometer position to EEPROM.
PIN NAMES
2035 Table01 3.0
l
o
b
m
y
Sn
o
i
t
p
i
r
c
s
e
D
#
P
UV
s
e
v
o
m
,
t
u
p
n
i
B
P
T
U
O
V
d
r
a
w
o
t
H
t
u
p
n
i
#
N
W
DV
s
e
v
o
m
,
t
u
p
n
i
B
P
T
U
O
V
d
r
a
w
o
t
L
t
u
p
n
i
V
H
V
F
E
R
h
g
i
h
D
N
Gd
n
u
o
r
G
V
T
U
O
t
u
p
t
u
o
e
g
a
t
l
o
v
d
e
m
m
i
r
T
V
L
V
F
E
R
w
o
l
#
R
T
S
t
u
p
n
i
l
o
r
t
n
o
c
a
g
n
i
d
i
v
o
r
p
,
t
u
p
n
i
e
r
o
t
S
n
o
i
t
a
r
e
p
o
e
r
o
t
s
a
e
t
a
i
t
i
n
i
o
t
V
D
D
)
V
5
.
5
o
t
V
7
.
2
(
e
g
a
t
l
o
v
y
l
p
p
u
S
UP#
DWN#
VH
GND
VDD
STR#
VL
VOUT
1
2
3
4
8
7
6
5
8-Pin SOIC
2035 T PCon 3.0


Html Pages

1  2  3  4  5  6  7  8 


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn