Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

AD7541 Datasheet(PDF) 3 Page - Intersil Corporation

Part # AD7541
Description  12-Bit, Multiplying D/A Converter
Download  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

AD7541 Datasheet(HTML) 3 Page - Intersil Corporation

  AD7541 Datasheet HTML 1Page - Intersil Corporation AD7541 Datasheet HTML 2Page - Intersil Corporation AD7541 Datasheet HTML 3Page - Intersil Corporation AD7541 Datasheet HTML 4Page - Intersil Corporation AD7541 Datasheet HTML 5Page - Intersil Corporation AD7541 Datasheet HTML 6Page - Intersil Corporation AD7541 Datasheet HTML 7Page - Intersil Corporation AD7541 Datasheet HTML 8Page - Intersil Corporation  
Zoom Inzoom in Zoom Outzoom out
 3 / 8 page
background image
10-11
Definition of Terms
Nonlinearity: Error contributed by deviation of the DAC
transfer function from a “best fit straight line” function. Nor-
mally expressed as a percentage of full scale range. For a
multiplying DAC, this should hold true over the entire VREF
range.
Resolution: Value of the LSB. For example, a unipolar
converter with n bits has a resolution of LSB = (VREF)/2
-N. A
bipolar
converter
of
n
bits
has
a
resolution
of
LSB=(VREF)/2
-(N-1). Resolution in no way implies linearity.
Settling Time: Time required for the output function of the
DAC to settle to within 1/2 LSB for a given digital input
stimulus, i.e., 0 to Full Scale.
Gain Error: Ratio of the DAC’s operational amplifier output
voltage to the nominal input voltage value.
Feedthrough Error: Error caused by capacitive coupling
from VREF to output with all switches OFF.
Output Capacitance: Capacitance from IOUT1, and IOUT2
terminals to ground.
Output Leakage Current: Current which appears on
IOUT1, terminal when all digital inputs are LOW or on IOUT2
terminal when all inputs are HIGH.
Detailed Description
The AD7541 is a 12-bit, monolithic, multiplying D/A converter.
A highly stable thin film R-2R resistor ladder network and
NMOS SPDT switches form the basis of the converter circuit.
CMOS level shifters provide low power TTL/CMOS compati-
ble operation. An external voltage or current reference and an
operational amplifier are all that is required for most voltage
output applications. A simplified equivalent circuit of the DAC
is shown on page 1, (Functional Diagram). The NMOS SPDT
switches steer the ladder leg currents between IOUT1 and
IOUT2 buses which must be held at ground potential. This
configuration maintains a constant current in each ladder leg
independent of the input code. Converter errors are further
eliminated by using wider metal interconnections between the
major bits and the outputs. Use of high threshold switches
reduces the offset (leakage) errors to a negligible level.
Each circuit is laser-trimmed, at the wafer level, to better than
12-bits linearity. For the first four bits of the ladder, special
trim-tabbed geometries are used to keep the body of the
resistors, carrying the majority of the output current, undis-
turbed. The resultant time stability of the trimmed circuits is
comparable to that of untrimmed units.
The level shifter circuits are comprised of three inverters with
a positive feedback from the output of the second to first
(Figure 1). This configuration results in TTL/COMS compati-
ble operation over the full military temperature range. With
the ladder SPDT switches driven by the level shifter, each
switch is binary weighted for an “ON” resistance proportional
to the respective ladder leg current. This assures a constant
voltage drop across each switch, creating equipotential ter-
minations for the 2R ladder resistor, resulting in accurate leg
currents.
Input Current
VIN = 0V or V+ (Note 6)
-
-
±1-
±1
µA
Input Coding
See Tables 1 and 2 (Note 6)
Binary/Offset Binary
Input Capacitance
(Note 6)
-
-
8
-
8
pF
POWER SUPPLY CHARACTERISTICS
Power Supply Voltage Range
Accuracy Is Not Guaranteed
Over This Range
+5 to +16
V
I+
All Digital Inputs High or Low
(Excluding Ladder Network)
-
-
2.0
-
2.5
mA
Total Power Dissipation
(Including Ladder Network)
-
20
-
-
-
mW
NOTES:
2. The digital control inputs are zener protected; however, permanent damage may occur on unconnected units under high energy
electrostatic fields. Keep unused units in conductive foam at all times.
3. Do not apply voltages higher than VDD or less than GND potential on any terminal except VREF and RFEEDBACK.
4. Full scale range (FSR) is 10V for unipolar and
±10V for bipolar modes.
5. Using internal feedback resistor, RFEEDBACK.
6. Guaranteed by design or characterization and not production tested.
7. Accuracy not guaranteed unless outputs at ground potential.
Electrical Specifications
V+ = +15V, VREF = +10V, VOUT1 = VOUT2 = 0V, TA = 25
oC, Unless Otherwise Specified (Continued)
PARAMETER
TEST CONDITIONS
TA = 25
oCT
A MIN-MAX
UNITS
MIN
TYP
MAX
MIN
MAX
AD7541


Similar Part No. - AD7541

ManufacturerPart #DatasheetDescription
logo
Intersil Corporation
AD7541 INTERSIL-AD7541 Datasheet
164Kb / 8P
   12-Bit, Multiplying D/A Converter
AD7541 INTERSIL-AD7541 Datasheet
4Mb / 122P
   P-CHANNEL JFET
logo
Renesas Technology Corp
AD7541 RENESAS-AD7541 Datasheet
480Kb / 8P
   12-Bit, Multiplying D/A Converter
May 2002
logo
Analog Devices
AD7541A AD-AD7541A Datasheet
227Kb / 8P
   CMOS 12-Bit Monolithic Multiplying DAC
REV. B
AD7541A AD-AD7541A Datasheet
180Kb / 8P
   CMOS 12-Bit Monolithic Multiplying DAC
REV. B
More results

Similar Description - AD7541

ManufacturerPart #DatasheetDescription
logo
NXP Semiconductors
AM6012 PHILIPS-AM6012 Datasheet
107Kb / 11P
   12-Bit multiplying D/A converter
August 31, 1994
logo
Intersil Corporation
AD7541 INTERSIL-AD7541_02 Datasheet
164Kb / 8P
   12-Bit, Multiplying D/A Converter
logo
Renesas Technology Corp
AD7541 RENESAS-AD7541 Datasheet
480Kb / 8P
   12-Bit, Multiplying D/A Converter
May 2002
logo
Maxim Integrated Produc...
MX7541 MAXIM-MX7541 Datasheet
179Kb / 4P
   CMOS 12 Bit Multiplying D/A Converter
19-0940; Rev 1; 7/95
MX7541A MAXIM-MX7541A Datasheet
317Kb / 8P
   CMOS 12 Bit Multiplying D/A Converter
19-0941; Rev 2; 7/95
logo
National Semiconductor ...
DAC1218 NSC-DAC1218 Datasheet
227Kb / 12P
   12-Bit Binary Multiplying D/A Converter
DAC1020 NSC-DAC1020 Datasheet
264Kb / 14P
   10-Bit, 12-Bit Binary Multiplying D/A Converter
logo
Analog Devices
AD394 AD-AD394_15 Datasheet
626Kb / 12P
   Compatible Multiplying Quad 12-Bit D/A Converter
REV. A
DAC312 AD-DAC312_15 Datasheet
272Kb / 14P
   12-Bit High Speed Multiplying D/A Converter
DAC8043A AD-DAC8043A Datasheet
137Kb / 8P
   12-Bit Serial Input Multiplying D/A Converter
REV. 0
More results


Html Pages

1 2 3 4 5 6 7 8


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
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
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com