MP7542 Exar Corporation, MP7542 Datasheet

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MP7542

Manufacturer Part Number
MP7542
Description
5 V CMOS 4-Bit Input 12-Bit Digital-to-Analog Converter
Manufacturer
Exar Corporation
Datasheet

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Part Number:
MP7542AD
Quantity:
6 500
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MP7542AD
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FEATURES
GENERAL DESCRIPTION
plying Digital-to-Analog Converter designed for direct interface
to 4 and 8-bit microprocessors.
register, address decoding logic, and a 12-bit CMOS multiplying
DAC. Data is loaded into the data registers in three 4-bit nibbles
and subsequently transferred to the 12-bit DAC register. All data
loading or data transfer operations are identical to the WRITE
SIMPLIFIED BLOCK DIAGRAM
12-Bit DAC with a 4-Bit Parallel Address for 4 & 8-Bit
Microprocessor or Microcontroller Interface
Nonlinearity +1/2 LSB Tmin to Tmax
Latch-Up Free
Low Sensitivity to Output Amplifier V
Low Output Capacitance
The MP7542 is a precision, 12-bit CMOS 4-quadrant multi-
The MP7542 consists of three 4-bit registers, a 12-bit DAC
Rev. 2.00
CLR
WR
CS
A0
A1
Address
Decode
Logic
OS
V
Register
H-Byte
REF
Data
12-Bit Multiplying DAC
12-Bit DAC Register
Register
M-Byte
1
Data
cycle of a static RAM. A CLEAR input allows the 12-bit DAC reg-
ister to be reset to all zeros.
monolithic double metal CMOS fabrication process. A unique
decoding technique is utilized yielding excellent accuracy and
stability.
output amplifier offset to only 330 V per millivolt of offset versus
670 V for the standard R-2R ladder CMOS DACs.
The MP7542 is manufactured using advanced thin-film on
The MP7542 reduces the additional linearity errors due to
Register
L-Byte
Data
+5 V Supply Operation
Low Power Consumption: 40mW Max.
Low Cost
Serial Version: MP7543
Digital-to-Analog Converter
AGND
R
I
I
DB0 (LSB)
DB1
DB2
DB3 (MSB)
V
DGND
OUT1
OUT2
FB
DD
4-Bit Input, 12-Bit
MP7542
5 V CMOS

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MP7542 Summary of contents

Page 1

... The MP7542 is a precision, 12-bit CMOS 4-quadrant multi- plying Digital-to-Analog Converter designed for direct interface to 4 and 8-bit microprocessors. The MP7542 consists of three 4-bit registers, a 12-bit DAC register, address decoding logic, and a 12-bit CMOS multiplying DAC. Data is loaded into the data registers in three 4-bit nibbles and subsequently transferred to the 12-bit DAC register ...

Page 2

... Data Input Bit 2 6 DB1 Data Input Bit 1 7 DB0 Data Input Bit 0 (LSB) Rev. 2.00 INL DNL Part No. (LSB) (LSB) MP7542JN +1 +2 MP7542KN +1/2 +1 MP7542JS +1 +2 MP7542KS +1/2 +1 MP7542AD +1 +2 MP7542BD +1/2 +1 MP7542SD MP7542TD* +1 OUT1 REF OUT2 AGND DD CLR DB3 ...

Page 3

... V 2.5 2 MP7542 Test Conditions/Comments Best Fit Straight Line Spec. (Max INL – Min INL Monotonicity 11 Bits Guaranteed 12 Bits Guaranteed Using Internal R FB Gain/ Temperature Gain =100 , C =13pF Full Scale Change to 1/2 LSB ...

Page 4

... MP7542 ELECTRICAL CHARACTERISTICS (CONT’D) Parameter Symbol SWITCHING 2, 4 CHARACTERISTICS WR Pulse Width t WR Address to WR Hold Time t AWH Hold Time t CWH CLR Pulse Width t CLR Byte Loading Setup t CWS1 Byte Loading, Address to WR Setup t AWS1 Byte Loading Data Setup ...

Page 5

... INH V INL CS V INH V INL WR DB3 - DB0 MP7542 Control Inputs CLR NOTES 1. 1 indicates logic HIGH 2. 0 indicates logic LOW 3. X indicates don’ ...

Page 6

... AD0-7 FROM SYSTEM RESET Figure 2. 8085/MP7542 Interface (Memory Mapped Output) Rev. 2.00 ing the MP7542 in a unipolar mode a CLEAR sets the DAC out- put to zero scale output. In the bipolar mode a CLEAR causes the DAC output –V In summary: 1. The MP7542 DAC register can be asynchronously cleared with the CLR input ...

Page 7

... BSC 2.54 BSC 0.115 0.150 2.92 3. 0.055 0.070 1.40 1.78 0.020 0.080 0.51 2.03 (0.58 mm) for all four corner leads only. 7 MP7542 E C ...

Page 8

... MP7542 16 LEAD CERAMIC DUAL-IN-LINE See Note 1 Q Base Plane Seating L Plane INCHES MILLIMETERS SYMBOL MIN MAX MIN A –– 0.200 b 0.014 0.023 0.356 b 0.038 0.065 0.965 1 c 0.008 0.015 0.203 D –– 0.840 E 0.220 0.310 5.59 E 0.290 0.320 7. 0.100 BSC L 0 ...

Page 9

... INCHES MILLIMETERS MIN MAX MIN MAX 0.097 0.104 2.46 0.0050 0.0115 0.127 0.292 0.014 0.019 0.356 0.482 0.0091 0.0125 0.231 0.318 0.402 0.412 10.21 10.46 0.292 0.299 7.42 0.050 BSC 1.27 BSC 0.400 0.410 10.16 10.41 0.010 0.016 0.254 0.406 0.016 0.035 0.406 0.889 MP7542 A L 2.64 7.59 8 ...

Page 10

... MP7542 Rev. 2.00 Notes 10 ...

Page 11

... Rev. 2.00 Notes 11 MP7542 ...

Page 12

... MP7542 EXAR Corporation reserves the right to make changes to the products contained in this publication in order to im- prove design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits de- scribed herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contains here in are only for illustration purposes and may vary depending upon a user’ ...

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