AS4040BM-2 [ETC]
Analog IC ; 模拟IC\n
| 型号： | AS4040BM-2 |
| 厂家： | 
ETC |
| 描述： | Analog IC
|
| 文件： | 总7页 (文件大小：130K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AS4040
Precision Micropower 2.5V Shunt Voltage Reference
FEATURES
APPLICATIONS
• Constant Current Source
• Digital Voltmeter
• Low temperature coefficient 100 ppm/°C
• Operating current range 100µA to 15 mA
• Low power, 250 mW @ Iin=100 mA
• Two terminal "Zener" operation
• Small package: SOT - 23, TO-92, and SO-8
• Fixed reverse breakdown voltage 2.5 Volt
• No output capacitance required
• Power Supply Monitor
• Precision Regulators
• Battery-Powered Equipment
• Instrumentation
• Automotive Electronics
• Data Acquisition Systems
• Energy Management
• Similar replacement for LM4040
PRODUCT DESCRIPTION
The AS4040 is a two-terminal, temperature compensated, band-gap voltage reference, which provides a fixed 2.5V output for input
currents between 100 µA to 15mA. The bandgap voltage (2.5V) is independently trimmed from the output voltage to achieve a very
low tempco. This trimming technique process gives a very stable device over the full temperature range (A grade 50 ppm/ °C). The
AS4040 is available in the sub-miniature (3mm × 1.3mm) SOT-23, SO-8 surface mount package, or TO-92 package. The operating
temperature is -40°C to 85°C.
The AS4040 advanced design eliminates the need for an external stabilized capacitor while insuring stability with any capacitive load,
making them easy to use.
ORDERING INFORMATION
Reverse Breakdown Voltage
Temperature Coef.
Output Accuracy
Part Number
AS4041YN-X
AS4041YS-X
AS4041YM-X
Package Type
TO-92
1=0.5%
2=1%
SO-8
SOT-23
Y=
2.5 = 2.5V
V=
A=100ppm/°C
B=150ppm/°C
X=
5.0 = 5.0V
Note: Consult factory for lower tempco and tolerance.
PIN CONNECTIONS
TO-92 (N)
8-Pin Surface Mount (S)
SOT-23-3 (M)
3
1
2
2
8
N/C
1
2
3
+
+
-
1
7
6
5
N/C
N/C
N/C
N/C
N/C
Bottom View
3
-
4
Top View
Top View
Rev. 10/11/00
AS4040
ABSOLUTE MAXIMUM RATINGS
Reverse Current................................................................20mA
Forward Current ...............................................................10mA
Storage Temperature ...................................... -65°C to +150°C
Lead Temperature (Soldering) ........................................ 300°C
Power Dissipation at 25°C
M Package ......................................................300mW
N Package.......................................................550mW
S Package........................................................525mW
Temperature Range................................... -40°C ≤ TA ≤ +85°C
ELECTRICAL CHARACTERISTICS (AS4040-2.5V)
Electrical Characteristics at IIN = 1000µA, and TA = +25°C unless otherwise noted. . Boldface limits apply over temperature
AS4040A-2
AS4040B-2
Units
Parameters
Reverse Breakdown
Voltage
Conditions
Min
Typ
Max
Min
Typ Max
2.500
2.500
V
IR=500 µA
Reverse Breakdown
mV
mV
Ω
µV p-p
ppm/°C
µSec
mA
°C
Units
IR=500 µA
25
49
2
25
Tolerance
49
Output Impedance
Noise Voltage
Tempco
Turn-on Setting
Operating Current Range
Temp. Range
0.60
15
0.60
15
2
0.1KHz≤f ≤10Hz
Note 1
0.1% of VOUT
Note 2
50
100
30
30
0.1
-40
15
85
0.1
-40
15
85
AS4040A-3
Typ
AS4040B-3
Parameters
Reverse Breakdown
Voltage
Conditions
Min
Max
Min
Typ Max
2.500
2.500
V
IR=500 µA
Reverse Breakdown
mV
mV
Ω
µV p-p
ppm/°C
µSec
mA
°C
IR=500 µA
50
50
74
2
Tolerance
74
Output Impedance
Noise Voltage
Tempco
Turn-on Setting
Operating Current Range
Temp. Range
0.60
15
2
0.60
15
0.1KHz≤f ≤10Hz
Note 1
0.1% of VOUT
Note 2
50
100
30
30
0.1
15
0.1
15
-40
85
-40
85
Rev. 10/11/00
AS4040
ELECTRICAL CHARACTERISTICS (AS4040-5.0V)
Electrical Characteristics at IIN = 1000µA, and TA = +25°C unless otherwise noted. . Boldface limits apply over temperature
AS4040A-1
AS4040B-1
AS4040C-1
Units
Parameters
Reverse Breakdown
Voltage
Conditions
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
5.000
5.000
5.000
V
IR=500 µA
Reverse Breakdown
mV
mV
Ω
IR=500 µA
24
58
2
24
58
2
24
58
2
tolerance
Output Impedance
0.60
0.3
15
0.60
0.3
15
0.60
0.3
15
0.9
1.1
1.1
Noise Voltage
Tempco
0.1KHz≤f ≤10Hz
Note 1
0.1% of VOUT
Note 2
µV p-p
ppm/°C
µSec
100
15
150
15
150
15
Turn-on Setting
30
30
30
Operating Current
0.175
-40
0.175
-40
0.175
-40
mA
Range
Temp. Range
85
85
85
°C
Units
AS4040A-2
Typ
AS4040B-2
Typ
AS4040C-2
Typ
Parameters
Reverse Breakdown
Voltage
Conditions
Min
Max
Min
Max
Min
Max
5.000
5.000
5.000
V
IR=500 µA
Reverse Breakdown
mV
mV
Ω
IR=500 µA
50
98
2
50
98
2
50
98
2
Tolerance
Output Impedance
Noise Voltage
Tempco
0.60
15
0.60
15
0.60
15
0.1KHz≤f ≤10Hz
Note 1
0.1% of VOUT
Note 2
µV p-p
ppm/°C
µSec
50
15
85
100
15
150
15
Turn-on Setting
30
30
30
Operating Current
0.175
-40
0.175
-40
0.175
-40
mA
Range
Temp. Range
85
85
°C
Units
AS4040A-3
Typ
AS4040B-3
Typ
AS4040C-3
Typ
Parameters
Reverse Breakdown
Voltage
Conditions
Min
Max
Min
Max
Min
Max
5.000
5.000
5.000
V
IR=500 µA
Reverse Breakdown
mV
mV
Ω
IR=500 µA
100
148
2
100
148
2
100
148
2
Tolerance
Output Impedance
Noise Voltage
Tempco
0.60
15
0.60
15
0.60
15
0.1KHz≤f ≤10Hz
Note 1
0.1% of VOUT
Note 2
µV p-p
ppm/°C
µSec
50
15
85
100
15
150
15
Turn-on Setting
30
30
30
Operating Current
0.175
-40
0.175
-40
0.175
-40
mA
Range
Temp. Range
85
85
°C
Note:
1) Three-point measurement guarantees the error band over the specified temperature range.
2) Optimum performance is obtained at currents below 1000 µA.
3) Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation using statistical quality control.
Rev. 10/11/00
AS4040
AS4040 Applications Hints
This device is designed for stable operation and has no need
of an external capacitor between pin 4 and 8. The reference
remains stable if a bypass capacitor is used.
Figure 1. AS4040 Fixed
Shunt Regulator Application
SOT-23
The AS4040 in the SOT-23 package has a parasitic Schottky
diode between pin 3 and pin 1. Pin 1 of SOT-23 must float
or be connected to pin 3.
VS
Conventional Shunt Regulator
RS
VR
IO + IL
IL
In a conventional shunt regulator application (see Figure 1),
an external series resister (RS) is connected between the
supply voltage and the AS4040. RS determines the current
that flows through the load (IL) and the reference(IQ). Since
load current and supply voltage may vary, RS should be small
enough to supply at least the minimum acceptable IQ to the
reference even when the supply voltage is at its minimum and
the load current is at its maximum value. When the supply
voltage is at its maximum and IL is at its minimum, RS should
be large enough so that the current flowing through the
AS4040 is less than 15mA
VO
IQ
AS4040
RS is determined by the supply voltage (VS), the load and
operating current (IL and IQ), reference’s reverse breakdown
voltage (VR).
RS = (VS - VR)/(IL+IQ)
Rev. 10/11/00
AS4040
PACKAGE DRAWING
8-PIN SOIC (S)
4.0 (0.158)
3.8 (0.150)
5.2 (0.205)
4.6 (0.181)
6.2 (0.244)
5.8 (0.228)
Pin 1
1.27 (0.50)
BSC
1.75 (0.069)
1.35 (0.053)
0.78 (0.031)
0.61 (0.024)
0.77 (0.030)
0.64 (0.025)
°
(4 PLCS)
°
45
5.0 (0.197)
4.8 (0.188)
0.37 (0.015)
BSC
7
°
-6
°
3
0.56 (0.022)
0.49 (0.019)
0.22 (0.009)
0.19 (0.007)
°
7
(4 PLCS)
0.45 (0.018)
0.35 (0.014)
0.20 (0.008)
0.10 (0.004)
Rev. 10/11/00
AS4040
DRAWING PACKAGE
SOT-23-3L (M)
0.015 - 0.018
(0.381 - 0.457)
0.047 - 0.055 0.083 - 0.098
(1.194 - 1.397) (2.108 - 2.489)
0.035 - 0.040
(0.889 - 1.016)
0.020 - 0.024
0.070 - 0.080
(0.508 - 0.610)
(1.778 - 2.032)
0.110 - 0.120
0.003 - 0.005
(2.794 - 3.048)
(0.076 - 0.127)
0.030 - 0.041
0.018 - 0.024
(0.457 - 0.610)
0.001 - 0.004
(0.025 - 0.102)
(0.762 - 1.041)
Rev. 10/11/00
AS4040
PACKAGE DRAWING
TO-92 (N)
0.090 (2.286) Radius typ.
2
1
3
0.145 (3.683)
0.135 (3.429)
0.055 (1.397)
0.045 (1.143)
10° typ.
BOTTOM VIEW
0.085 (2.159) Diameter
0.185 (4.699)
0.045 (1.143)
5° typ.
5° typ.
0.185 (4.699)
0.175 (4.445)
0.090 (2.286) typ.
Seating Plane
0.025 (0.635) Max
Uncontrolled
Lead Diameter
0.500 (12.70) Min.
0.016 (0.406)
0.014 (0.356)
0.0155 (0.3937)
0.0145 (0.3683)
0.055 (1.397)
0.045 (1.143)
0.105 (2.667)
0.095 (2.413)
Rev. 10/11/00
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