LM4040AIX3-4.1-T [MAXIM]
Two Terminal Voltage Reference, 1 Output, 4.096V, BICMOS, PDSO3, 1.80 X 1.80 MM, SC-70, 3 PIN;
| 型号： | LM4040AIX3-4.1-T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Two Terminal Voltage Reference, 1 Output, 4.096V, BICMOS, PDSO3, 1.80 X 1.80 MM, SC-70, 3 PIN 信息通信管理 光电二极管 |
| 文件： | 总15页 (文件大小：827K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-1787; Rev 4; 4/04
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
General Description
Features
The LM4040 is a precision two-terminal shunt mode,
bandgap voltage reference available in fixed reverse
breakdown voltages of 2.048V, 2.500V, 3.000V, 3.3V,
4.096V, and 5.000V. Ideal for space-critical applica-
tions, the LM4040 is offered in the subminiature 3-pin
✕ Ultra-Small 3-Pin SC70 Package
✕ 0.1% (max) Initial Accuracy
✕ 100ppm/°C (max) Temperature Coefficient
Guaranteed over -40°C to +125°C Temperature
Range
✕
SC70 surface-mount package (1.8mm 1.8mm), 50%
smaller than comparable devices in SOT23 surface-
mount packages (SOT23 versions are also available).
✕ Wide Operating Current Range: 60µA to 15mA
✕ Low 28µV
Output Noise (10Hz to 10kHz)
RMS
Laser-trimmed resistors ensure precise initial accuracy.
With a 100ppm/°C temperature coefficient, the device
is offered in four grades of initial accuracy ranging from
0.1% to 1%. The LM4040 has a 60µA to 15mA shunt
current capability with low dynamic impedance, ensur-
ing stable reverse breakdown voltage accuracy over a
wide range of operating temperatures and currents.
✕ 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V
Fixed Reverse Breakdown Voltages
✕ No Output Capacitors Required
✕ Tolerates Capacitive Loads
The LM4040 does not require an external stabilizing
capacitor while ensuring stability with any capacitive
load.
The LM4040 is guaranteed over the temperature range
of -40°C to +125°C.
Selector Guide
OUTPUT
VOLTAGE
(V)
For a 1.225V output version, refer to the LM4041 data
sheet.
PIN-
PART
TEMP RANGE
PACKAGE
________________________Applications
LM4040_IM3-2.1 -40°C to +85°C 3 SOT23-3
LM4040_IX3-2.1 -40°C to +85°C 3 SC70-3
LM4040_EM3-2.1 -40°C to +125°C 3 SOT23-3
LM4040_EX3-2.1 -40°C to +125°C 3 SC70-3
LM4040_IM3-2.5 -40°C to +85°C 3 SOT23-3
LM4040_IX3-2.5 -40°C to +85°C 3 SC70-3
LM4040_EM3-2.5 -40°C to +125°C 3 SOT23-3
LM4040_EX3-2.5 -40°C to +125°C 3 SC70-3
LM4040_IM3-3.0 -40°C to +85°C 3 SOT23-3
LM4040_IX3-3.0 -40°C to +85°C 3 SC70-3
LM4040_EM3-3.0 -40°C to +125°C 3 SOT23-3
LM4040_EX3-3.0 -40°C to +125°C 3 SC70-3
LM4040_EX3-3.3 -40°C to +125°C 3 SC70-3
LM4040_IM3-4.1 -40°C to +85°C 3 SOT23-3
LM4040_IX3-4.1 -40°C to +85°C 3 SC70-3
LM4040_EM3-4.1 -40°C to +125°C 3 SOT23-3
LM4040_EX3-4.1 -40°C to +125°C 3 SC70-3
LM4040_IM3-5.0 -40°C to +85°C 3 SOT23-3
LM4040_IX3-5.0 -40°C to +85°C 3 SC70-3
LM4040_EM3-5.0 -40°C to +125°C 3 SOT23-3
LM4040_EX3-5.0 -40°C to +125°C 3 SC70-3
2.048
2.048
2.048
2.048
2.500
2.500
2.500
2.500
3.000
3.000
3.000
3.000
3.300
4.096
4.096
4.096
4.096
5.000
5.000
5.000
5.000
Portable, Battery-Powered Equipment
Notebook Computers
Cell Phones
Industrial Process Controls
Pin Configuration
TOP VIEW
+
-
1
2
3
N.C.*
LM4040
SC70-3/SOT23-3
*PIN 3 MUST BE LEFT FLOATING
OR CONNECTED TO PIN 2.
Ordering Information appears at end of data sheet.
________________________________________________________________ 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.
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
ABSOLUTE MAXIMUM RATINGS
Reverse Current (cathode to anode) ..................................20mA
Forward Current (anode to cathode) ..................................10mA
Operating Temperature Range
LM4040_I_ _ _..................................................-40°C to +85°C
LM4040_E_ _ _ ..............................................-40°C to +125°C
Storage Temperature Range.............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s)..................................+300°C
Continuous Power Dissipation (T = +70°C)
A
3-Pin SC70 (derate 2.17mW/°C above +70°C)............174mW
3-Pin SOT23 (derate 4.01mW/°C above +70°C)..........320mW
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—2.048V
(I = 100µA, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
R
A
MIN
PARAMETER
SYMBOL
CONDITIONS
LM4040A (0.1%)
MIN
TYP
2.048
2.048
2.048
2.048
±2.0
±4.0
±10
±20
45
MAX
2.050
2.052
2.058
2.068
±15
UNITS
2.046
2.044
2.038
2.028
LM4040B (0.2%)
LM4040C (0.5%)
LM4040D (1.0%)
Reverse Breakdown Voltage
V
V
T
= +25°C
A
V
R
R
LM4040A
LM4040B
LM4040C
LM4040D
LM4040A/B/C
LM4040D
±17
Reverse Breakdown Voltage
Tolerance (Note 2)
mV
µA
±23
±41
65
Minimum Operating Current
I
RMIN
45
70
I
I
I
I
= 10mA
±20
±15
±15
±15
0.3
R
Average Reverse Voltage
Temperature Coefficient
(Note 2)
LM4040A/B/C
LM4040D
±100
±150
= 1mA
∆V /∆T
ppm/°C
R
R
= 100µA
R
LM4040A/B/C
LM4040D
1.0
1.2
8.0
10.0
0.8
0.9
1.1
≤ I ≤ 1mA
R
RMIN
Reverse Breakdown Voltage
Change with Operating
Current Change
0.3
mV
LM4040A/B/C
LM4040D
2.5
1mA ≤ I ≤ 15mA
R
2.5
LM4040A/B
LM4040C
0.3
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
R
Z
0.3
Ω
R
= 0.1I
R
AC
LM4040D
0.3
Wideband Noise
e
I
= 100µA, 10Hz ≤ f ≤ 10kHz
28
µV
RMS
N
R
Reverse Breakdown Voltage
Long-Term Stability
∆V
T = 1000h
120
ppm
R
2
_______________________________________________________________________________________
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
ELECTRICAL CHARACTERISTICS—2.500V
(I = 100µA, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
R
A
MIN
PARAMETER
SYMBOL
CONDITIONS
LM4040A (0.1%)
MIN
TYP
MAX
UNITS
2.4975 2.5000 2.5025
2.4950 2.5000 2.5050
2.4875 2.5000 2.5125
2.4750 2.5000 2.5250
LM4040B (0.2%)
LM4040C (0.5%)
LM4040D (1.0%)
Reverse Breakdown Voltage
V
V
T
= +25°C
A
V
R
R
LM4040A
LM4040B
LM4040C
LM4040D
LM4040A/B/C
LM4040D
±2.0
±4.0
±10
±20
45
±19
±21
±29
±49
65
Reverse Breakdown Voltage
Tolerance (Note 2)
mV
µA
Minimum Operating Current
I
RMIN
45
70
I
I
I
I
= 10mA
±20
±15
±15
±15
0.3
0.4
2.5
2.5
0.3
0.3
0.3
35
R
Average Reverse Voltage
Temperature Coefficient
(Note 2)
LM4040A/B/C
LM4040D
±100
±150
= 1mA
∆V /∆T
ppm/°C
R
R
= 100µA
R
LM4040A/B/C
LM4040D
1.0
1.2
8.0
10.0
0.8
0.9
1.1
≤ I ≤ 1mA
R
RMIN
Reverse Breakdown Voltage
Change with Operating
Current Change
mV
LM4040A/B/C
LM4040D
1mA ≤ I ≤ 15mA
R
LM4040A/B
LM4040C
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
R
Z
Ω
R
= 0.1I
R
AC
LM4040D
Wideband Noise
e
I
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
R
Reverse Breakdown Voltage
Long-Term Stability
∆V
T = 1000h
120
ppm
R
_______________________________________________________________________________________
3
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
ELECTRICAL CHARACTERISTICS—3.000V
(I = 100µA, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
R
A
MIN
PARAMETER
SYMBOL
CONDITIONS
LM4040A (0.1%)
MIN
TYP
3.000
3.000
3.000
3.000
±3.0
±6.0
±15
±30
45
MAX
3.003
3.006
3.015
3.030
±22
UNITS
2.997
2.994
2.985
2.970
LM4040B (0.2%)
LM4040C (0.5%)
LM4040D (1.0%)
Reverse Breakdown Voltage
V
V
T
= +25°C
A
V
R
R
LM4040A
LM4040B
LM4040C
LM4040D
LM4040A/B/C
LM4040D
±26
Reverse Breakdown Voltage
Tolerance (Note 2)
mV
µA
±34
±59
67
Minimum Operating Current
I
RMIN
45
70
I
I
I
I
= 10mA
±20
±15
±15
±15
0.3
R
Average Reverse Voltage
Temperature Coefficient
(Note 2)
LM4040A/B/C
LM4040D
±100
±150
= 1mA
∆V /∆T
ppm/°C
R
R
= 100µA
R
LM4040A/B/C
LM4040D
1.0
1.2
8.0
10.0
0.8
0.9
1.1
≤ I ≤ 1mA
R
RMIN
Reverse Breakdown Voltage
Change with Operating
Current Change
0.3
mV
LM4040A/B/C
LM4040D
2.5
1mA ≤ I ≤ 15mA
R
2.5
LM4040A/B
LM4040C
0.3
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
R
Z
0.3
Ω
R
= 0.1I
R
AC
LM4040D
0.3
Wideband Noise
e
I
= 100µA, 10Hz ≤ f ≤ 10kHz
45
µV
RMS
N
R
Reverse Breakdown Voltage
Long-Term Stability
∆V
T = 1000h
120
ppm
R
4
_______________________________________________________________________________________
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
ELECTRICAL CHARACTERISTICS—3.300V
(I = 100µA, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
R
A
MIN
PARAMETER
SYMBOL
CONDITIONS
LM4040A (0.1%)
MIN
TYP
MAX
UNITS
3.2967 3.3000 3.3033
3.2934 3.3000 3.3066
3.2835 3.3000 3.3165
3.2670 3.3000 3.3330
LM4040B (0.2%)
LM4040C (0.5%)
LM4040D (1.0%)
Reverse Breakdown Voltage
V
V
T
= +25°C
A
V
R
R
LM4040A
LM4040B
LM4040C
LM4040D
LM4040A/B/C
LM4040D
±3.0
±6.0
±15
±30
45
±22
±26
±34
±59
67
Reverse Breakdown Voltage
Tolerance (Note 2)
mV
µA
Minimum Operating Current
I
RMIN
45
70
I
I
I
I
= 10mA
±20
±15
±15
±15
0.3
0.3
2.5
2.5
0.3
0.3
0.3
50
R
Average Reverse Voltage
Temperature Coefficient
(Note 2)
LM4040A/B/C
LM4040D
±100
±150
= 1mA
∆V /∆T
ppm/°C
R
R
= 100µA
R
LM4040A/B/C
LM4040D
1.0
1.2
8.0
10.0
0.8
0.9
1.1
≤ I ≤ 1mA
R
RMIN
Reverse Breakdown Voltage
Change with Operating
Current Change
mV
LM4040A/B/C
LM4040D
1mA ≤ I ≤ 15mA
R
LM4040A/B
LM4040C
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
R
Z
Ω
R
= 0.1I
R
AC
LM4040D
Wideband Noise
e
I
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
R
Reverse Breakdown Voltage
Long-Term Stability
∆V
T = 1000h
120
ppm
R
_______________________________________________________________________________________
5
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
ELECTRICAL CHARACTERISTICS—4.096V
(I = 100µA, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
R
A
MIN
PARAMETER
SYMBOL
CONDITIONS
LM4040A (0.1%)
MIN
TYP
4.096
4.096
4.096
4.096
±4.1
±8.2
±20
±41
50
MAX
4.100
4.104
4.116
4.137
±31
UNITS
4.092
4.088
4.076
4.055
LM4040B (0.2%)
LM4040C (0.5%)
LM4040D (1.0%)
Reverse Breakdown Voltage
V
V
T
= +25°C
A
V
R
R
LM4040A
LM4040B
LM4040C
LM4040D
LM4040A/B/C
LM4040D
±35
Reverse Breakdown Voltage
Tolerance (Note 2)
mV
µA
±47
±81
73
Minimum Operating Current
I
RMIN
50
78
I
I
I
I
= 10mA
±30
±20
±20
±15
0.5
R
Average Reverse Voltage
Temperature Coefficient
(Note 2)
LM4040A/B/C
LM4040D
±100
±150
= 1mA
∆V /∆T
ppm/°C
R
R
= 100µA
R
LM4040A/B/C
LM4040D
1.2
1.5
≤ I ≤ 1mA
R
RMIN
Reverse Breakdown Voltage
Change with Operating
Current Change
0.5
mV
LM4040A/B/C
LM4040D
3.0
10.0
13.0
1.0
1mA ≤ I ≤ 15mA
R
3.0
LM4040A/B/C
LM4040D
0.5
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
R
Z
Ω
R
= 0.1I
R
AC
0.5
1.3
Wideband Noise
e
I
= 100µA, 10Hz ≤ f ≤ 10kHz
64
µV
RMS
N
R
Reverse Breakdown Voltage
Long-Term Stability
∆V
T = 1000h
120
ppm
R
6
_______________________________________________________________________________________
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
ELECTRICAL CHARACTERISTICS—5.000V
(I = 100µA, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
R
A
MIN
PARAMETER
SYMBOL
CONDITIONS
LM4040A (0.1%)
MIN
TYP
5.000
5.000
5.000
5.000
±5.0
±10
±25
±50
54
MAX
5.005
5.010
5.025
5.050
±38
UNITS
4.995
4.990
4.975
4.950
LM4040B (0.2%)
LM4040C (0.5%)
LM4040D (1.0%)
Reverse Breakdown Voltage
V
V
T
= +25°C
A
V
R
R
LM4040A
LM4040B
LM4040C
LM4040D
LM4040A/B/C
LM4040D
±43
Reverse Breakdown Voltage
Tolerance (Note 2)
mV
µA
±58
±99
80
Minimum Operating Current
I
RMIN
54
85
I
I
I
I
= 10mA
±30
±20
±20
±15
0.5
R
Average Reverse Voltage
Temperature Coefficient
(Note 2)
LM4040A/B/C
LM4040D
±100
±150
= 1mA
∆V /∆T
ppm/°C
R
R
= 100µA
R
LM4040A/B/C
LM4040D
1.4
1.8
≤ I ≤ 1mA
R
RMIN
Reverse Breakdown Voltage
Change with Operating
Current Change
0.5
mV
LM4040A/B/C
LM4040D
3.5
12.0
15.0
1.1
1mA ≤ I ≤ 15mA
R
3.5
LM4040A/B/C
LM4040D
0.5
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
R
Z
Ω
R
= 0.1I
R
AC
0.5
1.5
Wideband Noise
e
I
= 100µA, 10Hz ≤ f ≤ 10kHz
80
µV
RMS
N
R
Reverse Breakdown Voltage
Long-Term Stability
∆V
T = 1000h
120
ppm
R
Note 1: All devices are 100% production tested at +25°C and are guaranteed by design for T = T
to T
, as specified.
MAX
A
MIN
Note 2: The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room-temperature Reverse
Breakdown Voltage Tolerance ± ±(∆V / ∆T)(max∆T)(V )], where ∆V / ∆T is the V temperature coefficient, max∆T is the
R
R
R
R
maximum difference in temperature from the reference point of +25°C to T
or T
, and V is the reverse breakdown
MAX R
MIN
voltage. The total overtemperature tolerance for the different grades in the temperature range where max∆T = +65°C is
shown below:
A grade: ± 0.75% = ± 0.1% ± 100ppm/°C 65°C
B grade: ± 0.85% = ± 0.2% ± 100ppm/°C 65°C
C grade: ± 1.15% = ± 0.5% ± 100ppm/°C 65°C
✕
✕
✕
✕
D grade: ± 1.98% = ± 1.0% ± 150ppm/°C 65°C
The total over-temperature tolerance for the different grades in the extended temperature range where max ∆T = +100°C is
shown below:
A grade: ± 1.1% = ± 0.1% ± 100ppm/°C 100°C
B grade: ± 1.2% = ± 0.2% ± 100ppm/°C 100°C
C grade: ± 1.5% = ± 0.5% ± 100ppm/°C 100°C
✕
✕
✕
✕
D grade: ± 2.5% = ± 1.0% ± 150ppm/°C 100°C
Therefore, as an example, the A-grade LM4040-2.5 has an over-temperature reverse breakdown voltage tolerance of ± 2.5V
✕
0.75% = ± 19mV.
Note 3: Guaranteed by design.
_______________________________________________________________________________________
7
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Typical Operating Characteristics
(I = 100µA, SC70-3 package, T = +25°C, unless otherwise noted.)
R
A
REVERSE CHARACTERISTICS AND
MINIMUM OPERATING CURRENT
LM4040-2.5V
TEMPERATURE DRIFT
LM4040-5.0V
TEMPERATURE DRIFT
6
5
4
3
2
1
0
1
0
5
0
LM4040_I_3-4.1
LM4040_I_3-5.0
-1
-2
-3
-4
-5
LM4040_I_3-3.0
-5
-10
-15
-20
LM4040_I_3-2.5
LM4040_I_3-2.1
0
50
100
-50 -25
0
25
50
75 100 125
-50 -25
0
25
50
75 100 125
REVERSE CURRENT (µA)
TEMPERATURE (°C)
TEMPERATURE (°C)
LM4040-2.5V
REVERSE VOLTAGE vs. I
LM4040-5.0V
REVERSE VOLTAGE vs. I
SHUNT
SHUNT
5
4
3
2
1
6
5
4
3
2
1
T
= +125°C
A
T
= -40°C
A
T
= -40°C
A
T
= +125°C
A
T
= +25°C
A
T
= +85°C
A
T
= +85°C
A
T
= +25°C
A
0
0
0
0
5
10
(mA)
15
20
5
10
15
20
I
I
(mA)
SHUNT
SHUNT
8
_______________________________________________________________________________________
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Typical Operating Characteristics (continued)
(I = 100µA, SC70-3 package, T = +25°C, unless otherwise noted.)
R
A
LM4040-5.0V
LOAD-TRANSIENT RESPONSE
LM4040-2.5V
LOAD-TRANSIENT RESPONSE
LM4040-2.5V
LOAD-TRANSIENT RESPONSE
LM4040-07
LM4040-08
LM4040-06
+25µA
+250µA
+25µA
-25µA
-250µA
-25µA
10mV/div
2mV/div
10mV/div
40µs/div
= 100µA ± 25µA
10µs/div
= 1mA 250µA
10µs/div
CH2: V AC-COUPLED 2mV/div
I
I
SHUNT
L
CH1: V 2V/div
SHUNT
L
GEN
R = 100kΩ, SEE FIGURE 1
R = 10kΩ, SEE FIGURE 1
R
I
= 100µA 25µA, R = 100kΩ, SEE FIGURE 1
SHUNT
L
LM4040-5.0V
LOAD-TRANSIENT RESPONSE
LM4040-5.0V
LOAD-TRANSIENT RESPONSE
LM4040-2.5V
LOAD-TRANSIENT RESPONSE
LM4040-11
LM4040-09
LM4040-10
+2.5mA
+250µA
+2.5mA
-2.5mA
-250µA
-2.5mA
20mV/div
10mV/div
20mV/div
10µs/div
= 10mA 2.5mA
SHUNT
10µs/div
10µs/div
= 10mA 2.5mA
I
I
= 1mA 250µA
R = 10kΩ, SEE FIGURE 1
I
SHUNT
L
SHUNT
L
R = 1kΩ, SEE FIGURE 1
L
R = 1kΩ, SEE FIGURE 1
I
SHUNT
1kΩ
+
-
V
B
R
L
V
R
V
GEN
Figure 1. Load-Transient Test Circuit
_______________________________________________________________________________________
9
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Typical Operating Characteristics (continued)
(I = 100µA, SC70-3 package, T = +25°C, unless otherwise noted.)
R
A
LM4040-2.5V
STARTUP CHARACTERISTICS
LM4040-5.0V
STARTUP CHARACTERISTICS
LM4040-2.5V
OUTPUT IMPEDANCE vs. FREQUENCY
LM4040-12
LM4040-13
1000
5V
5V
0V
C = 1µF
1
0V
100
10
I
= 150µA
R
2V
1V
0V
4V
2V
0V
C = 0
1
1
I
= 1mA
R
R
= 30kΩ
R
= 16kΩ
S
S
SEE FIGURE 2
SEE FIGURE 2
0.1
0
4
8
12 16 20 24 28 32 36
0
10 20 30 40 50 60 70 80 90
0.1k
1k
10k
100k
1M
RESPONSE TIME (µs)
RESPONSE TIME (µs)
FREQUENCY (Hz)
LM4040-5.0V
OUTPUT IMPEDANCE vs. FREQUENCY
LM4040-2.5V
NOISE vs. FREQUENCY
LM4040-5.0V
NOISE vs. FREQUENCY
100
10
1
10,000
1000
100
10,000
1000
100
C = 0
1
I
= 150µA
R
I
R
= 1mA
C = 1µF
1
0.1
0.1k
1k
10k
FREQUENCY (Hz)
100k
1M
1
10
100
1k
10k
1
10
100
1k
10k
FREQUENCY (Hz)
FREQUENCY (Hz)
R
S
V
IN
V
R
1Hz RATE
50%
DUTY CYCLE
Figure 2. Startup Characteristics Test Circuit
10 ______________________________________________________________________________________
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Pin Description
PIN
1
NAME
+
FUNCTION
Positive Terminal of the Shunt Reference
Negative Terminal of the Shunt Reference
2
−
3
N.C.
No connection. Leave this pin unconnected or connected to Pin 2.
Detailed Description
V
S
The LM4040 shunt references use the bandgap princi-
ple to produce a stable, accurate voltage. The device
behaves similarly to an ideal zener diode; a fixed volt-
age is maintained across its output terminals when
biased with 60µA to 15mA of reverse current. The
LM4040 behaves similarly to a silicon diode when
biased with forward currents up 10mA.
I
+ I
SHUNT LOAD
R
S
I
LOAD
V
R
I
SHUNT
LM4040
Figure 3 shows a typical operating circuit. The LM4040
is ideal for providing a stable reference from a high-
voltage power supply.
Applications Information
Figure 3. Typical Operating Circuit
The LM4040’s internal pass transistor is used to maintain a
Temperature Performance
The LM4040 typically exhibits an output voltage tem-
perature coefficient within ± 15ppm/°C. The polarity of
the temperature coefficient may be different from one
device to another; some may have positive coefficients,
and others may have negative coefficients.
constant output voltage (V
) by sinking the necessary
SHUNT
amount of current across a source resistor. The source
resistance (R ) is determined from the load current (I
)
S
LOAD
range, supply voltage (V ) variations, V
, and desired
SHUNT
S
quiescent current.
Choose the value of R when V is at a minimum and I
S
S
LOAD
of 60µA at all
is at a maximum. Maintain a minimum I
High Temperature Operation
The maximum junction temperature of the LM4040 is
+150°C. The maximum operating temperature for the
LM4040_E_ is +125°C. At a maximum load current of 15mA
and a maximum output voltage of 5V, the part will dissipate
75mW of power. The power dissipation limits of the 3-pin
SC70 call for a derating value of 2.17mW/°C above +70°C
and thus for 75mW of power dissipation, the part will self-
heat to 35.56°C above ambient temperature. If the ambient
temperature is +125°C, the part operates at 159.56°C,
thereby exceeding the maximum junction temperature
value of +150°C. For high-temperature operation, care must
be taken to ensure the combination of ambient temperature,
output power dissipation and package thermal resistance
does not conspire to raise the device temperature beyond
that listed in the Absolute Maximum Ratings. Either reduce
the output load current or the ambient temperature to keep
the part within the limits.
SHUNT
times. The R value should be large enough to keep
S
I
less than 15mA for proper regulation when V is
SHUNT
S
maximum and I
to the device, I
is at a minimum. To prevent damage
should never exceed 20mA.
LOAD
SHUNT
Therefore, the value of R is bounded by the following
S
equation:
±V
- V ] / ±60µA + I
] > R >
LOAD(MIN)
S(MIN)
±V
R
LOAD(MAX) S
- V ] / ±20mA + I
]
S(MAX)
R
Choosing a larger resistance minimizes the total power dis-
sipation in the circuit by reducing the shunt current
✕
(P
= V
I ). Provide a safety margin to
SHUNT
D(TOTAL)
S
incorporate the worst-case tolerance of the resistor used.
Ensure that the resistor’s power rating is adequate, using
the following general power equation:
✕
PD = I
(V
S(MAX)
- V
)
R
SHUNT
SHUNT
Output Capacitance
The LM4040 does not require an external capacitor for fre-
quency stability and is stable for any output capacitance.
Chip Information
TRANSISTOR COUNT: 60
PROCESS: BiCMOS
______________________________________________________________________________________ 11
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Ordering Information
OUTPUT
VOLTAGE (V) ACCURACY (%)
INITIAL
TEMPCO
(ppm/°C)
TOP
MARK
PART
TEMP RANGE
PIN-PACKAGE
LM4040AIM3-2.1-T
LM4040AIX3-2.1-T
LM4040BIM3-2.1-T
LM4040BIX3-2.1-T
LM4040CIM3-2.1-T
LM4040CIX3-2.1-T
LM4040DIM3-2.1-T
LM4040DIX3-2.1-T
LM4040AEM3-2.1-T
LM4040AEX3-2.1-T
LM4040BEM3-2.1-T
LM4040BEX3-2.1-T
LM4040CEM3-2.1-T
LM4040CEX3-2.1-T
LM4040DEM3-2.1-T
LM4040DEX3-2.1-T
LM4040AIM3-2.5-T
LM4040AIX3-2.5-T
LM4040BIM3-2.5-T
LM4040BIX3-2.5-T
LM4040CIM3-2.5-T
LM4040CIX3-2.5-T
LM4040DIM3-2.5-T
LM4040DIX3-2.5-T
LM4040AEM3-2.5-T
LM4040AEX3-2.5-T
LM4040BEM3-2.5-T
LM4040BEX3-2.5-T
LM4040CEM3-2.5-T
LM4040CEX3-2.5-T
LM4040DEM3-2.5-T
LM4040DEX3-2.5-T
LM4040AIM3-3.0-T
LM4040AIX3-3.0-T
LM4040BIM3-3.0-T
LM4040BIX3-3.0-T
LM4040CIM3-3.0-T
LM4040CIX3-3.0-T
LM4040DIM3-3.0-T
LM4040DIX3-3.0-T
LM4040AEM3-3.0-T
LM4040AEX3-3.0-T
LM4040BEM3-3.0-T
LM4040BEX3-3.0-T
LM4040CEM3-3.0-T
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
0.1
0.1
0.2
0.2
0.5
0.5
1.0
1.0
0.1
0.1
0.2
0.2
0.5
0.5
1.0
1.0
0.1
0.1
0.2
0.2
0.5
0.5
1.0
1.0
0.1
0.1
0.2
0.2
0.5
0.5
1.0
1.0
0.1
0.1
0.2
0.2
0.5
0.5
1.0
1.0
0.1
0.1
0.2
0.2
0.5
100
100
100
100
100
100
150
150
100
100
100
100
100
100
150
150
100
100
100
100
100
100
150
150
100
100
100
100
100
100
150
150
100
100
100
100
100
100
150
150
100
100
100
100
100
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
FZEF
ABJ
FZEG
ABK
FZEH
ABL
FZEI
ABM
FZNG
ALF
FZNH
ALG
FZNI
ALH
FZNJ
ALI
FZEJ
ABN
FZEK
ABO
FZEL
ABP
FZEM
ABQ
FZNK
ALJ
FZNL
ALK
FZNM
ALL
FZNN
ALM
FZEN
ABR
FZEO
ABS
FZEP
ABT
FZEQ
ABU
FZNO
ALN
FZNP
ALO
FZNQ
12 ______________________________________________________________________________________
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Ordering Information (continued)
OUTPUT
VOLTAGE (V) ACCURACY (%)
INITIAL
TEMPCO
(ppm/°C)
TOP
MARK
PART
TEMP RANGE
PIN-PACKAGE
LM4040CEX3-3.0-T
LM4040DEM3-3.0-T
LM4040DEX3-3.0-T
LM4040AEX3-3.3-T
LM4040BEX3-3.3-T
LM4040CEX3-3.3-T
LM4040DEX3-3.3-T
LM4040AIM3-4.1-T
LM4040AIX3-4.1-T
LM4040BIM3-4.1-T
LM4040BIX3-4.1-T
LM4040CIM3-4.1-T
LM4040CIX3-4.1-T
LM4040DIM3-4.1-T
LM4040DIX3-4.1-T
LM4040AEM3-4.1-T
LM4040AEX3-4.1-T
LM4040BEM3-4.1-T
LM4040BEX3-4.1-T
LM4040CEM3-4.1-T
LM4040CEX3-4.1-T
LM4040DEM3-4.1-T
LM4040DEX3-4.1-T
LM4040AIM3-5.0-T
LM4040AIX3-5.0-T
LM4040BIM3-5.0-T
LM4040BIX3-5.0-T
LM4040CIM3-5.0-T
LM4040CIX3-5.0-T
LM4040DIM3-5.0-T
LM4040DIX3-5.0-T
LM4040AEM3-5.0-T
LM4040AEX3-5.0-T
LM4040BEM3-5.0-T
LM4040BEX3-5.0-T
LM4040CEM3-5.0-T
LM4040CEX3-5.0-T
3.000
3.000
3.000
3.300
3.300
3.300
3.300
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
0.5
1.0
1.0
0.1
0.2
0.5
1.0
0.1
0.1
0.2
0.2
0.5
0.5
1.0
1.0
0.1
0.1
0.2
0.2
0.5
0.5
1.0
1.0
0.1
0.1
0.2
0.2
0.5
0.5
1.0
1.0
0.1
0.1
0.2
0.2
0.5
0.5
100
150
150
100
100
100
150
100
100
100
100
100
100
150
150
100
100
100
100
100
100
150
150
100
100
100
100
100
100
150
150
100
100
100
100
100
100
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
3 SC70-3
3 SOT23-3
3 SC70-3
3 SC70-3
3 SC70-3
3 SC70-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
ALP
FZNR
ALQ
ANY
ANZ
AOA
AOB
FZER
ABV
FZES
ABW
FZET
ABX
FZEU
ABY
FZNS
ALR
FZNT
ALS
FZNU
ALT
FZNV
ALU
FZEV
ABZ
FZEW
ACA
FZEX
ACB
FZEY
ACC
FZNW
ALV
FZNX
ALW
FZNY
ALX
______________________________________________________________________________________ 13
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
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.)
PACKAGE OUTLINE, 3L SOT-23
1
21-0051
F
1
14 ______________________________________________________________________________________
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Package Information (continued)
(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.)
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.
15 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2004 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
相关型号：
LM4040AIX3-5.0+
Two Terminal Voltage Reference, 1 Output, 5V, BICMOS, PDSO3, 1.80 X 1.80 MM, ULTRA SMALL, SC-70, 3 PIN
MAXIM
LM4040AIX3-5.0-T
Two Terminal Voltage Reference, 1 Output, 5V, BICMOS, PDSO3, 1.80 X 1.80 MM, SC-70, 3 PIN
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