ad7541a Analog Devices, Inc., ad7541a Datasheet

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ad7541a

Manufacturer Part Number
ad7541a
Description
Cmos 12-bit Monolithic Multiplying Dac
Manufacturer
Analog Devices, Inc.
Datasheet

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a
GENERAL DESCRIPTION
The Analog Devices AD7541A is a low cost, high performance
12-bit monolithic multiplying digital-to-analog converter. It is
fabricated using advanced, low noise, thin film on CMOS
technology and is available in a standard 18-lead DIP and in
20-terminal surface mount packages.
The AD7541A is functionally and pin compatible with the in-
dustry standard AD7541 device and offers improved specifica-
tions and performance. The improved design ensures that the
device is latch-up free so no output protection Schottky diodes
are required.
This new device uses laser wafer trimming to provide full 12-bit
endpoint linearity with several new high performance grades.
Model
AD7541AJN
AD7541AKN 0 C to +70 C
AD7541AJP
AD7541AKP 0 C to +70 C
AD7541AKR 0 C to +70 C
AD7541AAQ –25 C to +85 C
AD7541ABQ –25 C to +85 C
AD7541ASQ –55 C to +125 C
AD7541ATQ –55 C to +125 C
AD7541ASE
AD7541ATE –55 C to +125 C
NOTES
1
2
3
REV. B
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
Analog Devices reserves the right to ship either ceramic (D-18) or cerdip (Q-18)
To order MIL-STD-883, Class B process parts, add /883B to part number. Contact
E = Leadless Ceramic Chip Carrier; N = Plastic DIP; P = Plastic Leaded Chip
hermetic packages.
local sales office for military data sheet.
Carrier; Q = Cerdip; R = Small Outline IC.
FEATURES
Improved Version of AD7541
Full Four-Quadrant Multiplication
12-Bit Linearity (Endpoint)
All Parts Guaranteed Monotonic
TTL/CMOS Compatible
Low Cost
Protection Schottky Diodes Not Required
Low Logic Input Leakage
2
Temperature
Range
0 C to +70 C
0 C to +70 C
–55 C to +125 C
ORDERING GUIDE
Relative
Accuracy
T
1 LSB
1/2 LSB
1 LSB
1/2 LSB
1/2 LSB
1 LSB
1/2 LSB
1 LSB
1/2 LSB
1 LSB
1/2 LSB
MIN
to T
MAX
1
Gain
Error
T
6 LSB
1 LSB
6
1
1
6 LSB
1 LSB
6 LSB
1 LSB
6 LSB
1 LSB
A
= +25 C
Package
Options
N-18
N-18
P-20A
P-20A
R-18
Q-18
Q-18
Q-18
Q-18
E-20A
E-20A
3
12-Bit Monolithic Multiplying DAC
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
PRODUCT HIGHLIGHTS
Compatibility: The AD7541A can be used as a direct replace-
ment for any AD7541-type device. As with the Analog Devices
AD7541, the digital inputs are TTL/CMOS compatible and
have been designed to have a 1 A maximum input current
requirement so as not to load the driving circuitry.
Improvements: The AD7541A offers the following improved
specifications over the AD7541:
1. Gain Error for all grades has been reduced with premium
2. Gain Error temperature coefficient has been reduced to
3. Digital-to-analog charge injection energy for this new device
4. Latch-up proof.
5. Improvements in laser wafer trimming provides 1/2 LSB max
6. All grades are guaranteed monotonic to 12 bits over the
grade versions having a maximum gain error of 3 LSB.
2 ppm/ C typical and 5 ppm/ C maximum.
is typically 20% less than the standard AD7541 part.
differential nonlinearity for top grade devices over the operat-
ing temperature range (vs. 1 LSB on older 7541 types).
operating temperature range.
V
REF
BIT 1 (MSB)
FUNCTIONAL BLOCK DIAGRAM
20k
DIGITAL INPUTS (DTL/TTL/CMOS COMPATIBLE)
S1
10k
LOGIC: A SWITCH IS CLOSED TO I
ITS DIGITAL INPUT IN A "HIGH" STATE.
BIT 2
World Wide Web Site: http://www.analog.com
20k
S2
10k
BIT 3
20k
S3
10k
BIT 12 (LSB)
© Analog Devices, Inc., 1997
20k
OUT1
S12
AD7541A
FOR
10k
20k
CMOS
OUT2
OUT1
R
FEEDBACK

Related parts for ad7541a

ad7541a Summary of contents

Page 1

... Protection Schottky Diodes Not Required Low Logic Input Leakage GENERAL DESCRIPTION The Analog Devices AD7541A is a low cost, high performance 12-bit monolithic multiplying digital-to-analog converter fabricated using advanced, low noise, thin film on CMOS technology and is available in a standard 18-lead DIP and in 20-terminal surface mount packages ...

Page 2

... AD7541A–SPECIFICATIONS Parameter ACCURACY Resolution Relative Accuracy Differential Nonlinearity Gain Error 2 Gain Temperature Coefficient Gain/ Temperature Output Leakage Current OUT1 (Pin 1) OUT2 (Pin 2) REFERENCE INPUT Input Resistance (Pin 17 to GND) DIGITAL INPUTS V (Input HIGH Voltage (Input LOW Voltage (Input Current) ...

Page 3

... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD7541A features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...

Page 4

... Additionally, the ampli- OUT times the DAC feedback resistance, nominally 33pF OUT1 REF AD7541A * R1 2 OUT2 DGND PINS 4–15 3 ANALOG COMMON DIGITAL BIT 1 – BIT 12 GROUND * REFER TO TABLE 1 Figure 4. Unipolar Binary Operation Trim Resistor JN/AQ/SD KN/BQ/TD R1 100 ...

Page 5

... AD7541A 20k 16 18 33pF OUT1 REF AD7541A A1 10k OUT2 2 10% GND AD544L PINS 4–15 3 1/2 AD7592JN ANALOG COMMON DIGITAL GROUND SIGN BIT * FOR VALUES OF R1 AND R2 BIT 1 – BIT 12 SEE TABLE 1. LSB Analog Output, V ...

Page 6

... AD7541A, particularly in circuits with high cur- rents and fast rise and fall times. Temperature Coefficients: The gain temperature coefficient of the AD7541A has a maximum value of 5 ppm/ C and a typi- cal value of 2 ppm/ C. This corresponds to worst case gain shifts of 2 LSBs and 0.8 LSBs, respectively, over a 100 C temperature range ...

Page 7

... PIN 1 0.1043 (2.65) 0.0926 (2.35) 0.0500 0.0192 (0.49) SEATING 0.0125 (0.32) (1.27) 0.0138 (0.35) PLANE BSC 0.0091 (0.23) –7– AD7541A 20-Lead Plastic Leadless Chip Carrier (P-20A) 0.180 (4.57) 0.165 (4.19) 0.048 (1.21) 0.056 (1.42) 0.042 (1.07) 0.025 (0.63) 0.042 (1.07) 0.015 (0.38 0.021 (0.53 PIN 1 0.050 0.013 (0.33) 0.330 (8.38) IDENTIFIER (1 ...

Page 8

–8– ...

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