MP7528KN Exar Corporation, MP7528KN Datasheet

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MP7528KN

Manufacturer Part Number
MP7528KN
Description
CMOS Dual Buffered Multiplying 8-Bit Digital-to-Analog Converter
Manufacturer
Exar Corporation
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MP7528KN
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
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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MP7528KN 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 ...

Page 2

... REFA DGND 5 DACA/DACB 6 (MSB) DB7 7 DB6 8 DB5 9 DB4 10 20 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 ...

Page 3

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

Page 4

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 ...

Page 5

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 ...

Page 6

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 ...

Page 7

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 ...

Page 8

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 ...

Page 9

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 ...

Page 10

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

Page 11

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 ...

Page 12

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

Page 13

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

Page 14

MP7528 Rev. 2.00 Notes 14 ...

Page 15

Rev. 2.00 Notes 15 MP7528 ...

Page 16

... While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized ...

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