MP7542AD EXAR [Exar Corporation], MP7542AD Datasheet

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MP7542AD

Manufacturer Part Number
MP7542AD
Description
5 V CMOS 4-Bit Input, 12-Bit Digital-to-Analog Converter
Manufacturer
EXAR [Exar Corporation]
Datasheet

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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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MP7542AD Summary of contents

Page 1

FEATURES 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 GENERAL DESCRIPTION The MP7542 is a precision, ...

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 3 14 ...

Page 3

ELECTRICAL CHARACTERISTICS ( +10 V unless otherwise noted) DD REF Parameter Symbol 1 STATIC PERFORMANCE Resolution (All Grades) N Integral Non-Linearity INL (Relative Accuracy Differential Non-Linearity DNL J, ...

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 ...

Page 5

INH V INL CS V INH V INL WR DB3 - DB0 MP7542 Control Inputs CLR ...

Page 6

MP7542 APPLICATION NOTES Refer to Section 8 for Applications Information Interface Logic Information The MP7542 is designed to interface as a memory-mapped output device. A typical system configuration is shown below the de- coded device address, and is ...

Page 7

LEAD PLASTIC DUAL-IN-LINE Seating Plane L B SYMBOL ( Note: (1) The minimum limit for dimensions B1 may ...

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 ...

Page 9

LEAD SMALL OUTLINE D 16 Seating Plane e SYMBOL Rev. 2.00 (300 MIL JEDEC SOIC) S16 INCHES ...

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 ...

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