MX581SH/883B [MAXIM]
Three Terminal Voltage Reference, 10V, BIPolar, MBCY3;
| 型号： | MX581SH/883B |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Three Terminal Voltage Reference, 10V, BIPolar, MBCY3 |
| 文件： | 总8页 (文件大小：124K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Not Recommended for New Designs
This product was manufactured for Maxim by an outside wafer foundry
using a process that is no longer available. It is not recommended for
new designs. The data sheet remains available for existing users.
A Maxim replacement or an industry second-source may be available.
Please see the QuickView data sheet for this part or contact technical
support for assistance.
For further information, contact Maxim’s Applications Tech Support.
19-1114; Rev 2; 11/04
High-Precision, 10V Reference
General Description
Features
Maxim’s MX581 is a three-terminal, temperature-
compensated, bandgap voltage reference which pro-
vides a precision 10V output from an unregulated input of
12.5V to 30V. Laser trimming is used to minimize initial
error and temperature drift, to as low as 10mV and
15ppm/°C with the MX581.
♦ ±10mV Tolerance (MX581K)
♦ Low Tempco—15ppm/°C max (MAX581K)
♦ No External Components or Trims
♦ Short-Circuit Proof
♦ Output Sources and Sinks Current
♦ 10mA Output Current
No external components are needed to achieve full
accuracy over the operating temperature range. Total
supply current to the device, including the internal output
buffer amplifier is typically 750µA.
♦ Low-Supply Current—1.0mA (max)
♦ Three-Terminal Package
The MX581 is designed for use with 8- to 14-bit ADCs
and DACs as well as data acquisition systems. The
reference is available in a 3-pin T0-39 metal can and an
8-pin SO surface-mount package.
Ordering Information
Applications
CMOS DAC Reference
A/D Converter Reference
Measurement Instrumentation
Threshold Detectors
PIN-
PACKAGE
PART
TEMP RANGE
ERROR
MX581JH
0°C to +70°C 3 TO-39 Can
0°C to +70°C 3 TO-39 Can
0°C to +70°C 8 SO
30mV
10mV
30mV
10mV
30mV
10mV
20mV
10mV
MX581KH
MX581JCSA
MX581KCSA
MX581JESA
MX581KESA
MX581SH
Precision Analog Systems
0°C to +70°C 8 SO
-40°C to +85°C
-40°C to +85°C
8 SO
8 SO
-55°C to +125°C 3 TO-39 Can
-55°C to +125°C 3 TO-39 Can
MX581TH
Typical Operating Circuit
Pin Configurations
BOTTOM VIEW
+V
S
+15V
V
OUT
+10V
GND
+V
S
10kΩ
V
OUT
TO-39
MX581
TOP VIEW
10kΩ
5kΩ
GND
-10V
+10V
N.C.
N.C.
GND
1
2
3
4
8
7
6
5
+V
S
MX400
N.C.
N.C.
N.C.
MX581
+10V REFERENCE
SO
________________________________________________________________ Maxim Integrated Products
1
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.
High-Precision, 10V Reference
ABSOLUTE MAXIMUM RATINGS
Input Voltage (V to GND) .......................................-0.3V, +40V
Continuous Power Dissipation
Storage Temperature Range.............................-65°C to +175°C
Lead Temperature (soldering, 10s) .................................+300°C
IN
TO-39 Can (derate 8.7mW/°C above +60°C) ..............600mW
SO (derate 5.3mW/°C above +75°C) ..........................400mW
Output Short-Circuit Duration (Note 1) ..........................Indefinite
Operating Temperature Range
Die Junction Temperature (T ) ..........................-55°C to +150°C
Thermal Resistance, Junction to Ambient
TO-39 CAN ..............................................................+150°C/W
SO............................................................................+170°C/W
J
Commercial (J, K)...............................................0°C to +70°C
Extended (J, K)................................................-40°C to +85°C
Military (S, T)..................................................-55°C to +125°C
Note 1: Absolute maximum power dissipation must not be exceeded.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V = +15V. T = +25°C, unless otherwise noted.)
IN
A
PARAMETER
SYMBOL
CONDITIONS
MX581J/S
MX581K/T
MIN
TYP
MAX
30
10
UNITS
I = 0mA
L
Output Voltage Tolerance
mV
13.5
(30)
19.5
(30)
6.75
(15)
13
(20)
30
(30)
MX581JH/JCSA
MX581JESA
MX581KH/KCSA
MX581KESA
MX581S
Output Voltage Change with
Temperature
(Temperature Coefficient)
mV
(ppm/°C)
15
(15)
MX581T
0.005
(1.0)
12.5V < V < 15V
IN
%/V
Line Regulation
Load Regulation
No load
(mV)
0.002
(3.0)
15V < V < 30V
IN
20
(220)
50
(550)
ppm/mA
(µV/mA)
I = 0mA to 5mA
L
I
I = 0mA
L
Quiescent Supply Current
Turn-On Settling Time to 0.1%
Noise
750
200
50
1000
µA
µs
Q
t
ON
e
µV
0.1Hz to 10Hz
Noncumulative
n(P-P)
P-P
Long-Term Stability
Short-Circuit Current
25
ppm/kHrs
mA
I
30
SC
T
T
= +25°C
to T
10
5
A
Source
MIN
MIN
MAX
MAX
V
2.5V
> V
+
OUT
MX581J/K
MX581S/T
5
0.2
IN
I
L
Output Current
mA
T
to T
Sink (Note 2)
T
= -55°C to
A
MX581S/T
5
+65°C
Note 2: C
≥ 10nF (see the Output Current section).
LOAD
2
_______________________________________________________________________________________
High-Precision, 10V Reference
Typical Operating Characteristics
SPECTRAL NOISE DENSITY
AND TOTAL RMS NOISE
vs. FREQUENCY
OUTPUT VOLTAGE
vs. TEMPERATURE
QUIESCENT CURRENT
vs. TEMPERATURE
10.005
10.000
9.995
1000
900
800
700
600
500
1000
100
10
NOISE SPECTRAL DENSITY
(mV/√Hz)
1.5µA/°C
TOTAL NOISE (µV ) UP TO
SPECIFIED FREQUENCY
RMS
1
-55 -40 -20
0
20 40 60 80 100 125
-55 -40 -20
0
20 40 60 80 100 125
10
100
1k
10k
100k
1M
TEMPERATURE (°C)
TEMPERATURE (°C)
FREQUENCY (Hz)
MX581 OUTPUT VOLTAGE
vs. SINK AND SOURCE CURRENT
OUTPUT SETTLING
CHARACTERISTICS
MX581 toc05
12
11
+V = +15V
S
10.030
14
12
10
8
T
= +25°C
A
10.020
10.010
10.000
10
20
10
0
6
4
2
0
-25 -20 -15 -10 -5
SOURCE
0
5
10 15 20 25
SINK
0
50 100 150 200 250
SETTLING TIME (µs)
OUTPUT CURRENT (mA)
Detailed Description
As shown in Figure 1, most applications of the MX581
require no external components. Connections are +V ,
OUT
package). Usually the desired accuracy is obtained by
selecting the appropriate device grade. However, any
part can be adjusted to a tighter tolerance, or to slightly
different voltage, using the fine trim circuit in Figure 2.
The table in Figure 2 lists the trim range for different
values of R in the figure, and also shows the effect on
temperature coefficient.
S
+12.5V TO +30V
+V
V
, and GND (GND is tied to the case in the TO-5
S
V
OUT
+10.0V
MX581
GND
Figure 1. MX581 Basic Connection
_______________________________________________________________________________________
3
High-Precision, 10V Reference
Applications Information
Precision High-Current Reference
A pnp power transistor, or Darlington, is easily connect-
ed to the MX581 to greatly increase its output current.
The circuit of Figure 3 provides a +10V output at up to
4A. If the load has a significant capacitive component,
compensation capacitor, C1, should be added. If the
load is purely resistive, high-frequency supply rejection
is improved without C1.
6.8kΩ
10kΩ
4.3kΩ
-15V
R
+V
S
GND
+15V
MX581
V
OUT
MAX.
∆TCR
TRIM
RANGE
R
+10.0V
Low Input Voltage
Although line regulation is specified from 12.5V to 40V,
the MX581 can operate with a +12V 5% input by
adding a resistor as shown in Figure 4. The resistor
22Ω
12Ω
3.9Ω
±30mV
±10mV
±5mV
3.5ppm/°C
2.0ppm/°C
0.6ppm/°C
reduces the current that must be supplied from V
.
OUT
Note that the resistor cannot be used at higher input
voltages since, as the supply increases, it sources
Figure 2. Optional Fine Trim Configuration
more current than V
can sink.
OUT
Voltage Temperature Coefficient
The temperature characteristic of the MX581 consis-
tently follows an “S-curve” (see Typical Operating
Characteristics). A five-point 100% test guarantees
compliance with -55°C to +125°C specifications and
a three-point 100% test guarantees 0°C to +70°C
specifications.
V
≥ 15V
IN
470Ω
The voltage change specifications in the Electrical
Characteristics table state the maximum deviation over
temperature from the reference’s initial value at +25°C,
as well as drift in ppm/°C. By adding the maximum
deviation for a given device to its initial tolerance, the
total error is quickly determined.
2N6040
C1
0.1µF
Output Current
The MX581 is unique in that it can sink as well as
source current. The circuit is also protected for output
shorts to either +VS or GND. The output voltage versus
current characteristic is shown in the Typical Operating
Characteristics. For applications that require the MX581
to sink current, maintain a load capacitance of 10nF or
greater for proper operation.
+V
S
V
V
OUT
10V AT 4A
OUT
MX581
GND
Figure 3. High-Current Precision Supply
Dynamic Performance
The turn-on characteristic and settling performance of
the MX581 are shown in the Typical Operating
Characteristics. Both coarse and fine transient
response is shown. The reference typically settles to
1mV within 180µs after power is applied.
12.5V ±5%
580Ω 5%
10V AT 0mA TO 5mA
+V
S
V
OUT
MX581
GND
Figure 4. 12V Supply Connection
_______________________________________________________________________________________
4
High-Precision, 10V Reference
When using the 2-terminal connection, the load and the
bias resistor must be selected so that the current flow-
ing in the reference is maintained between 1mA and
5mA. The operating temperature range for this connec-
tion is limited to -55°C to +85°C.
Current Limiter
By adding a single resistor as shown in Figure 5, the
MX581 is turned into a precision current limiter for
applications where the driving voltage is 12.5V to 40V.
The programmed current ranges from 0.75mA to 5mA.
Reference for CMOS DACs and ADCs
The MX581 is well suited for use with a wide variety of
digital-to-analog converters, especially CMOS DACs.
Figure 7 shows a circuit in which an MX7533 10-bit
DAC outputs 0 to -10V when using a +10V reference.
For a positive DAC output, the MX581 is configured as
a 2-terminal -10V reference (Figure 6) and connected
Negative 10V Reference
Where a -10V reference is required, the MX581 can be
connected as a two-terminal device and biased like a
zener diode. The circuit is shown in Figure 6. +V and
S
V
are connected to the system’s analog ground
OUT
and the MX581’s GND pin is connected, through a
resistor, to the negative supply. With 1mA flowing in the
reference, the output voltage is typically 2mV greater
than what is obtained with the conventional, positive
hook-up.
to the DAC’s V
input.
REF
In Figure 8, an MX7574 CMOS ADC uses an MX581 for
its -10V reference input. The input range for the ADC is
0 to +10V.
+15V
+V
S
V
OUT
+V
S
MX581
15
14
16
V
OUT
10V
R
V
V
R
FB
DD
REF
1
2
I =
+ 0.75mA
GND
MX581
OUT1
V
OUT
MX7533
0V TO -10V
R
GND
OUT2
GND
3
MAX400
4-13
DIGITAL INPUT
Figure 5. Two-Component Precision Current Limiter
Figure 7. Low-Power, 10-Bit CMOS DAC Connection
-15V
ANALOG
GND
+V
S
1.2kΩ
V
MX7574
OUT
+V
S
GND
2
3
4
5
1
0.01µF
MX581
V
B
A
V
+5V
REF
DFS
IN
DD
MX581
GND
0.01µF
OUT
V
V
-10V
REF
ANALOG
INPUT
18
AGND DGND
DB0-DB7
13-6
1.2kΩ 5%
-15V
DIGITAL OUTPUTS
Figure 6. Two-Terminal -10V Reference
Figure 8. Negative 10V Reference for CMOS ADC
_______________________________________________________________________________________
5
High-Precision, 10V Reference
Chip Topography
0.087"
(2.208mm)
+15V
+V
S
CS
D0
1
V
OUT
2
18
+V
S
MX581
1
/ 74C240
3
GND
0.071"
(1.803mm)
3-STATE BUFFER
V
OUT
GND
Figure 9. MX581 Microprocessor Interface
GND
TRANSISTOR COUNT: 72
SUBSTRATE CONNECTED TO GND
6
_______________________________________________________________________________________
High-Precision, 10V Reference
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
INCHES
MILLIMETERS
DIM
A
MIN
MAX
0.069
0.010
0.019
0.010
MIN
1.35
0.10
0.35
0.19
MAX
1.75
0.25
0.49
0.25
0.053
0.004
0.014
0.007
N
A1
B
C
e
0.050 BSC
1.27 BSC
E
0.150
0.228
0.016
0.157
0.244
0.050
3.80
5.80
0.40
4.00
6.20
1.27
E
H
H
L
VARIATIONS:
INCHES
1
MILLIMETERS
DIM
D
MIN
MAX
0.197
0.344
0.394
MIN
4.80
8.55
9.80
MAX
5.00
N
8
MS012
AA
TOP VIEW
0.189
0.337
0.386
D
8.75 14
10.00 16
AB
D
AC
D
C
A
B
0∞-8∞
e
A1
L
FRONT VIEW
SIDE VIEW
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, .150" SOIC
APPROVAL
DOCUMENT CONTROL NO.
REV.
1
21-0041
B
1
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 7
© 2004 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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