MX7837KN+ Maxim Integrated Products, MX7837KN+ Datasheet

IC DAC 12BIT DL MULT 24-DIP

MX7837KN+

Manufacturer Part Number
MX7837KN+
Description
IC DAC 12BIT DL MULT 24-DIP
Manufacturer
Maxim Integrated Products
Datasheet
1.MX7837JN.pdf (12 pages)

Specifications of MX7837KN+

Settling Time
4µs
Number Of Bits
12
Data Interface
Parallel
Number Of Converters
2
Voltage Supply Source
Dual ±
Power Dissipation (max)
1.07W
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
24-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MX7837/MX7847 are dual, 12-bit, multiplying, volt-
age-output digital-to-analog converters (DACs). Each
DAC has an output amplifier and a feedback resistor.
The output amplifier is capable of developing ±10V
across a 2kΩ load. The amplifier feedback resistor is
internally connected to V
nal trims are required to achieve full 12-bit performance
over the entire operating temperature range.
The MX7847 has a 12-bit parallel data input, whereas
the MX7837 operates with a double-buffered 8-bit-bus
interface that loads data in two write operations. All
logic signals are level triggered and are TTL and CMOS
compatible. Fast timing specifications make these
DACs compatible with most microprocessors.
________________________Applications
19-0158; Rev 0; 7/93
Call toll free 1-800-998-8800 for free samples or literature.
_________________Pin Configurations
_______________General Description
TOP VIEW
MX7847 on last page.
Small Component-Count Analog Systems
Digital Offset/Gain Adjustments
Industrial Process Control
Function Generators
Automatic Test Equipment
Automatic Calibration
Machine and Motion Control Systems
Waveform Reconstruction
Synchro Applications
AGNDA
AGNDB
V
V
DGND
V
V
R
OUTA
OUTB
R
REFA
REFB
V
V
FBA
FBB
CS
DD
SS
________________________________________________________________ Maxim Integrated Products
10
11
12
1
2
3
4
5
6
7
8
9
OUT
MX7837
DIP/SO
on the MX7847. No exter-
15
24
23
22
21
20
19
18
17
16
14
13
DB0/DB8
DB1/DB9
DB2/DB10
DB3/DB11
DB4
DB5
DB6
DB7
A0
A1
LDAC
WR
Ordering Information continued on last page.
* Contact factory for availability and processing to MIL-STD-883.
____________________________Features
_________Typical Operating Circuits
Complete, Dual, 12-Bit
______________Ordering Information
MX7837JN
MX7837KN
MX7837JR
MX7837KR
MX7837C/D
V
V
LDAC
Two 12-Bit Multiplying DACs with Buffered
Voltage Output
Specified with ±12V or ±15V Supplies
No External Adjustments Required
Fast Timing Specifications
24-Pin DIP and SO Packages
12-Bit Parallel Interface (MX7847)
8-Bit + 4-Bit Interface (MX7837)
REFA
REFB
DB0
DB7
MX7847 on last page.
WR
CS
PART
A0
A1
CONTROL
DGND
LOGIC
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
Multiplying DACs
LATCH
LATCH
INPUT
INPUT
MSB
DAC LATCH B
MSB
DAC LATCH A
4
4
DAC B
DAC A
12
12
24 Narrow Plastic DIP
24 Narrow Plastic DIP
24 Wide SO
24 Wide SO
Dice*
LATCH
PIN-PACKAGE
INPUT
LATCH
INPUT
LSB
LSB
8
8
MX7837
V
V
SS
DD
ERROR
(LSB)
R
V
AGNDA
R
V
AGNDB
±1/2
±1/2
FBA
OUTA
FBB
OUTB
±1
±1
±1
1

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MX7837KN+ Summary of contents

Page 1

... REFB DGND FBB DIP/SO MX7847 on last page. ________________________________________________________________ Maxim Integrated Products Call toll free 1-800-998-8800 for free samples or literature. Complete, Dual, 12-Bit ____________________________Features Two 12-Bit Multiplying DACs with Buffered Voltage Output Specified with ±12V or ±15V Supplies No External Adjustments Required Fast Timing Specifications ...

Page 2

Complete, Dual, 12-Bit Multiplying DACs ABSOLUTE MAXIMUM RATINGS V to DGND, AGNDA, AGNDB ............................-0.3V to +17V DGND, AGNDA, AGNDB (Note 1) ..............+0.3V to -17V AGNDA, AGNDB .. (V REFA REFB SS AGNDA, ...

Page 3

ELECTRICAL CHARACTERISTICS (continued 11.4V to 16.5V -11.4V to -16.5V, AGNDA = AGNDB = DGND = 0V connected to R (MX7837 OUT FB A PARAMETER SYMBOL POWER REQUIREMENTS V Range ...

Page 4

Complete, Dual, 12-Bit Multiplying DACs TIMING CHARACTERISTICS (V = 11.4V to 16.5V -11.4V to -16.5V, AGNDA = AGNDB = DGND = 0V PARAMETER Setup Time Hold Time WR Pulse ...

Page 5

Operating Characteristics (continued +25° 15V -15V SMALL-SIGNAL PULSE RESPONSE AGNDA 50mV/div OUTA TIMEBASE = 2 s/div V = ±100mV SQUARE WAVE REFA ______________________________________________________________Pin Description PIN ...

Page 6

Complete, Dual, 12-Bit Multiplying DACs REF SHOWN FOR ALL 1s ON DAC Figure 1. D/A Simplified Circuit Diagram _______________Detailed Description Figure 1 shows a simplified circuit ...

Page 7

LDAC DAC A LATCH DAC INPUT LATCH DAC A A1 LATCH Figure 4. MX7837 Input Control Logic CS, WR, A0, and A1 control data loading to the input latches. The eight data inputs ...

Page 8

Complete, Dual, 12-Bit Multiplying DACs Bipolar Operation (4-Quadrant Figure 7 shows the MX7837/MX7847 connected for binary operation. The offset-binary coding is shown in Table 4. When signal, the circuit performs IN 4-quadrant multiplication. R1, R2, and ...

Page 9

Configurations TOP VIEW CSA 1 CSB REFA V 4 OUTA AGNDA 5 MX7847 AGNDB OUTB V 10 REFB DGND 11 DB11 12 DIP/SO Typical Operating Circuits DAC ...

Page 10

Complete, Dual, 12-Bit Multiplying DACs __________________________________________________________Chip Topographies MX7837 DB0/DB8 DB1/DB9 REFA FBA V OUTA AGNDA AGNDB V OUTB V DGND R WR FBB REFB 0.140" (3.56mm) TRANSISTOR COUNT: 1240; SUBSTRATE CONNECTED ...

Page 11

Information ______________________________________________________________________________________ Complete, Dual, 12-Bit 45˚ A 0.127mm 0.004in Multiplying DACs INCHES MILLIMETERS DIM MIN MAX MIN A – ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1993 Maxim Integrated Products ...

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