參數(shù)資料
型號(hào)： MAX5270BCMH
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： DAC
英文描述： Octal, 13-Bit Voltage-Output DAC with Parallel Interface
中文描述： PARALLEL, WORD INPUT LOADING, 22 us SETTLING TIME, 13-BIT DAC, PQFP44
封裝： MQFP-44
文件頁數(shù)： 1/13頁
文件大?。?/td> 251K
代理商： MAX5270BCMH
General Description
The MAX5270 contains eight 13-bit, voltage-output digi-
tal-to-analog converters (DACs). On-chip precision out-
put amplifiers provide the voltage outputs. The device
operates from +12V/-12V supplies. Its output voltage
swing ranges from 0V to +8.192V and is achieved with
no external components. The MAX5270 has three pairs
of differential reference inputs; two of these pairs are
connected to two DACs each, and a third pair is con-
nected to four DACs. The references are independently
controlled, providing different full-scale output voltages
to the respective DACs. The MAX5270 operates within
the following voltage ranges: V
DD
= +11.4V to +12.6V,
V
SS
= -11.4V to -12.6V, and V
CC
= +4.75V to +5.25V.
The MAX5270 features double-buffered interface logic
with a 13-bit parallel data bus. Each DAC has an input
latch and a DAC latch. Data in the DAC latch sets the
output voltage. The eight input latches are addressed
with three address lines. Data is loaded to the input
latch with a single-write instruction. An asynchronous
load input (
LD
) transfers data from the input latch to the
DAC latch. The
LD
input controls all DACs; therefore, all
DACs can be updated simultaneously by asserting the
LD
pin.
An asynchronous
CLR
input sets the output of all eight
DACs to the respective DUTGND input of the op amp.
Note that
CLR
is a CMOS input, which is powered by
V
DD
. All other logic inputs are TTL/CMOS compatible.
The “A” grade of the MAX5270 has a maximum INL of
±2LSBs, while the “B” grade has a maximum INL of
±4LSBs. Both grades are available in 44-pin MQFP
packages.
Applications
Industrial Process Controls
Arbitrary Function Generators
Avionics Equipment
Minimum Component Count Analog Systems
Digital Offset/Gain Adjustment
SONET Applications
Automatic Test Equipment (ATE)
Features
o
Full 13-Bit Performance Without Adjustments
o
Eight DACs in a Single Package
o
Buffered Voltage Outputs
o
Voltage Swing Between 0 and +8.192V
o
22μs Output Settling Time
o
Drives up to 10,000pF Capacitive Load
o
30mV Low Output Glitch
o
Low Power Consumption: 10mA (typ)
o
Small 44-Pin MQFP Package
o
Double-Buffered Digital Inputs
o
Asynchronous Load Updates All DACs
Simultaneously
o
Asynchronous
CLR
Forces All DACs to DUTGND
Potential
Ordering Information
M
Octal, 13-Bit Voltage-Output DAC
with Parallel Interface
DUTGNDGH
OUTH
REFGH-
REFGH+
V
SS
CLR
D12
D11
D10
D9
D8
DUTGNDAB
OUTA
REFAB-
REFAB+
V
DD
V
SS
LD
A2
A1
A0
CS
1
2
3
4
5
6
7
8
9
10
11
1
1
1
1
1
1
1
1
2
2
2
4
4
4
4
4
3
3
3
3
3
3
33
32
31
30
29
28
27
26
25
24
23
W
V
C
G
D
D
D
D
D
D
D
D
O
O
D
O
R
R
V
D
O
D
O
O
MQFP-44
MAX5270
TOP VIEW
PART
MAX5270ACMH
MAX5270BCMH
MAX5270AEMH
MAX5270BEMH
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
TEMP. RANGE
PIN-
PACKAGE
44 MQFP
44 MQFP
44 MQFP
44 MQFP
Functional Diagram appears at end of data sheet.
Pin Configuration
INL
(LSB)
±2
±4
±2
±4
19-1711; Rev 1; 1/01
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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