MP7528AD EXAR [Exar Corporation], MP7528AD Datasheet

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MP7528AD

Manufacturer Part Number
MP7528AD
Description
CMOS Dual Buffered Multiplying 8-Bit Digital-to-Analog Converter
Manufacturer
EXAR [Exar Corporation]
Datasheet
FEATURES
GENERAL DESCRIPTION
using EXAR’s proven decoded DAC architecture. It features ex-
cellent DAC-to-DAC matching and guaranteed monotonicity.
easy microprocessor interface.
a common 8-bit TTL/CMOS compatible input port. Control input
SIMPLIFIED BLOCK AND TIMING DIAGRAM
DACA/DACB
On-Chip Latches for Both DACs
+5 V to +15 V Operation
DACs Matched to 1%
Four Quadrant Multiplication
15 V CMOS Compatible
See MP7529A or MP7529B for Improved Performance
The MP7528 is a dual 8-bit digital/analog converter designed
Separate on-chip latches are provided for each DAC to allow
Data is transferred into either of the two DAC data latches via
DB7-DB0
Rev. 2.00
WR
CS
V
DD
DGND
D
E
D
E
LATCH A
LATCH B
Q
Q
V
V
REFA
REFB
DAC A
DAC B
1
DACA/DACB determines which DAC is to be loaded. The
MP7528’s load cycle is similar to the write cycle of a random ac-
cess memory and the device is bus compatible with most 8-bit
microprocessors.
only 2 mA of current (maximum).
acteristics with a separate reference input and feedback resistor
for each DAC.
The device operates from a +5V to +15V power supply with
Both DACs offer excellent four quadrant multiplication char-
APPLICATIONS
Microprocessor Controlled Gain Circuits
Microprocessor Controlled Attenuator Circuits
Microprocessor Controlled Function Generation
Precision AGC Circuits
Bus Structured Instruments
R
R
AGND
I
I
OUTB
OUTA
FBA
FBB
Dual Buffered Multiplying 8-Bit
Digital-to-Analog Converter
DACA/DACB
DB7-DB0
OUT
WR
CS
MP7528
CMOS

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MP7528AD Summary of contents

Page 1

FEATURES On-Chip Latches for Both DACs + +15 V Operation DACs Matched to 1% Four Quadrant Multiplication 15 V CMOS Compatible See MP7529A or MP7529B for Improved Performance GENERAL DESCRIPTION The MP7528 is a dual 8-bit digital/analog converter ...

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... Pin CDIP, PDIP (0.300”) D20, N20 Rev. 2.00 INL DNL Part No. (LSB) (LSB) MP7528JN +1 +1 MP7528KN +1/2 +1 MP7528LN +1/4 +1 MP7528JS +1 +1 MP7528KS +1/2 +1 MP7528LS +1/4 +1 MP7528JP +1 +1 MP7528KP +1/2 +1 MP7528LP +1/4 +1 MP7528AD +1 +1 MP7528BD +1/2 +1 MP7528CD +1/4 +1 MP7528SD MP7528TD* +1 OUTB FBB REFB See ...

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PIN CONFIGURATIONS (CONT’D) DACA/DACB (MSB) DB7 PIN OUT DEFINITIONS PIN NO Rev. 2. OUTA OUTB R AGND R ...

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MP7528 ELECTRICAL CHARACTERISTICS ( +10 V unless otherwise noted) DD REF Parameter Symbol 1 STATIC PERFORMANCE Resolution (All Grades) N Integral Non-Linearity INL (Relative Accuracy Monotonicity ...

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ELECTRICAL CHARACTERISTICS (CONT’D) Parameter Symbol 3 DIGITAL INPUTS Logical “1” Voltage V IH Logical “0” Voltage V IL Input Leakage Current I LKG 2 Input Capacitance Data C IN Control ANALOG OUTPUTS Output Capacitance C OUTA C ...

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MP7528 ELECTRICAL CHARACTERISTICS ( +10 V unless otherwise noted) DD REF Parameter Symbol 1 STATIC PERFORMANCE Resolution (All Grades) N Integral Non-Linearity INL (Relative Accuracy Monotonicity ...

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ELECTRICAL CHARACTERISTICS (CONT’D) Parameter Symbol 2 ANALOG OUTPUTS Output Capacitance C OUTA C OUTA C OUTB C OUTB 5 POWER SUPPLY 2 Functional Voltage Range V DD Supply Current I DD SWITCHING CHARACTERISTICS Chip Select to Write Set-Up Time t ...

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MP7528 INTERFACE LOGIC INFORMATION DAC Selection: Both DAC latches share a common 8-bit in- put port. The control input DACA/DACB selects which DAC can accept data from the input port. Mode Selection: Inputs CS and WR control the operating mode ...

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MICROPROCESSOR INTERFACE Address Bus A0-A15 A* Address Decode V MA Logic CPU A+1** 6800 2 Data Bus D0–D7 Analog circuitry has been omitted for clarity *A = Decoded 7528 DAC A Address ** Decoded 7528 DAC B ...

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MP7528 Rev. 2.00 This page left blank 10 ...

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LEAD CERAMIC DUAL-IN-LINE S 1 See 20 Note Base Plane Seating L Plane b 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 ...

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MP7528 20 LEAD PLASTIC DUAL-IN-LINE Seating Plane L B SYMBOL ( Note: (1) The minimum limit for dimensions B1 ...

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LEAD SMALL OUTLINE D 20 Seating Plane e SYMBOL Rev. 2.00 (300 MIL JEDEC SOIC) S20 INCHES ...

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MP7528 Rev. 2.00 Notes 14 ...

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Rev. 2.00 Notes 15 MP7528 ...

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MP7528 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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