SPX4041_04 [SIPEX]
Precision 1.24V Shunt Voltage Reference; 精密1.24V并联型电压基准
| 型号： | SPX4041_04 |
| 厂家： | 
SIPEX CORPORATION |
| 描述： | Precision 1.24V Shunt Voltage Reference |
| 文件： | 总9页 (文件大小：115K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
SPX4041
Precision 1.24V Shunt Voltage Reference
FEATURES
N/C
N/C
1
2
8
7
CATHODE
N/C
■ Voltage Tolerance........................1% and 2%
■ Wide Operating Curren..........100µA to 15mA
■ Low Temperature Coefficient.........50ppm/°C
■ Fixed Reverse Breakdown Voltage.......1.24V
■ No Output Capacitance Required
SPX4041
8 Pin nSOIC
N/C
3
4
6
5
N/C
N/C
ANODE
■ Two Terminal "Zener" Operation
■ Improved Replacement for TL431
Now Available in Lead Free Packaging
APPLICATIONS
■ Constant Current Source
■ Digital Voltmeter
■ Battery Powered Equipment
■ Instrumentation
■ Automotive Electronics
■ Data Acquisition Systems
■ Power Management
■ Precision Regulators
DESCRIPTION
The SPX4041 is a 2-terminal, temperature compensated, band-gap voltage reference which
providesafixed1.24Voutputforinputcurrentsbetween160µAand15mA. Thebandgapvoltage
(1.24V)isindependentlylasertrimmedfromtheoutputvoltagetoachieveaverylowtemperature
coefficient, then the output voltage is trimmed to 1.24V. This trimming technique and the low
temperature coefficient (A grade: 50 ppm/°C) thin film resistor process gives a very stable device
over the full temperature range. The SPX4041 is available in the sub miniature 3 pin SOT-23,
3 pin TO-92 or 8 pin NSOIC packages. The operating temperature is -40°C to 85°C. The
SPX4041advanceddesigneliminatestheneedforanexternalstabilizedcapacitorwhileinsuring
stability with any capacitive load, making it easy to use.
TYPICAL APPLICATIONS CIRCUIT
Cathode (K)
+
-
1.24V
Anode (A)
Figure 1: Block Diagram
Date: 11/29/04
SPX4041 Precision 1.24V Shunt Voltage Reference
© Copyright 2004 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
Stresses greater than those listed under ABSOLUTE
MAXIMUM RATINGS may cause permanent damage
to the device. This is a stress rating only and functional
operation of the device at these or any other conditions
abovethoseindicatedintheoperationalsectionsofthis
specification is not implied. Exposure to absolute maxi-
mum rating conditions for extended periods may affect
reliability.
Reverse Current (IKA)) ...................................... 20mA
Forward Current (IAK) ....................................... 10mA
Operating Temperature Range (TA) ...... -40 to +85°C
Junction Temperature (TJ) .............................. 150°C
Storage Temperature (TSTG) ................ - 65 to 150°C
Lead Temperature (Soldering 10 sec.), TL ......... 300°C
ELECTRICAL CHARACTERISTICS IIN = 1000µA, TA = 25°C, unless otherwise specified.
SPX4041A
SPX4041
PARAMETER
CONDITIONS
MIN. TYP. MAX MIN. TYP. MAX. UNIT
Reverse Breakdown Voltage IR=500µA
1.24
1.24
V
Reverse Breakdown
Tolerance
IR=500µA
±12
±29
±25
±49
mV
-40°C≤TA≤85°C
Dynamic Output Impedance
Noise Voltage
0.60
15
2.00
100
85
0.60
15
2.00
Ω
0.1kHz≤f≤10Hz
Note 1
µVPP
Temperature Coefficient
Turn-on Setting
100 ppm/°c
µs
0.1% of VOUT
30
30
Temperature Range (TA)
Operating Current Range
-40
0.5
-40
0.5
85
°C
5.0
5.0
mA
15.0
15.0
Thermal Resistance
TO-92 ΘJA
TO-92 ΘJC
SOIC-8 ΘJA
SOIC-8 ΘJC
SOT-23 ΘJA
SOT-23 ΘJC
160
80
175
45
575
150
160
80
175
45
575
150
°C/W
Note 1. Three-point measurement guarantees the error band over the specified temperature range.
*CALCULATING AVERAGE TEMPERATURE COEFFICIENT (TC)
mV
ppm
%
0
0
0
∆VKA(mV)
∆VKA
TC in mV/°C
=
=
∆TA
∆T
∆VKA
∆VKA at 25°C
∆TA
-5
x
100
(
)
%
TC in
/°C
5000
0.5
∆VKA
∆V at 25°C
KA
x
106
(
)
TC in ppm/°C
=
0
15
30
45
60
75
90
105
∆TA
Junction Temperature (°C)
0.033 mV/°C
0.0027 %/°C
27 ppm/°C
Figure 2. VREF vs. Temperature
Date: 11/29/04
SPX4041 Precision 1.24V Shunt Voltage Reference
© Copyright 2004 Sipex Corporation
2
TYPICAL PERFORMANCE CHARACTERISTICS
15.0
Temperature Range: 0°C to 105°C
12.5
10.0
7.5
V
V
KA
IN
5.0
2.5
I
K
0
-2.5
-5.0
-7.5
-10.0
-2
-1
0
1
1.24
2
3
VKA - Cathode Voltage (V)
Figure 3. Test Circuit for VKA=VREF
Figure 4. High Current Operating Characteristics
900
VKA = VREF
Temperature Range: 0°C to 105°C
800
IK = 10mA
1.26
700
600
500
400
1.25
1.24
1.23
1.22
105 °C
300
25 °C
200
-0 °C
100
1.21
1.20
0
1.24
-100
-200
∫∫
-1.0
-0.5
0
0.25
0.5
0.75
1.0
1.25
1.5
-60
-30
0
30
60
90
VKA - Cathode Voltage (V)
TA - Ambient Temperature (°C)
Figure 6. Low Current Operating Characteristics
Figure 5. Reference Voltage vs. Ambient Temperature
0.150
70
60
50
40
30
20
IKA = 160µA to 15mA
f ≤ 1kHz
0.125
0.100
0.075
0.050
0.025
0.0
10
IK = 10mA
TA = 25°C
0
-60
-30
0
30
60
90
120
10
100
1 k
10 k
100 k
f - Frequency (Hz)
TA - Free Air Temperature
Figure 7. Noise Voltage vs Frequency
Figure 8. Low Frequency Dynamic Ouput Impedance
vs TA
Date: 11/29/04
SPX4041 Precision 1.24V Shunt Voltage Reference
© Copyright 2004 Sipex Corporation
3
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
180Ω
V
OUT
I
K
50Ω
f
= 100kHz
p
GND
Figure 9. Frequency=100kHz, IK=10mA, TA=25°C
Figure 10. Test Circuit for Pulse Response
APPLICATION INFORMATION
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
SPX4041 is less than 15mA.
This device is designed for stable opera-
tion and has no need of an external
capacitor. The reference remains stable if
a bypass capacitor is used.
SOT-23
The SPX4041 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.
RS is determined by the supply voltage
(VS), the load and operating current (IL and
IQ), reference’s reverse breakdown voltage
(VR).
Conventional Shunt Regulator
In a conventional shunt regulator applica-
tion (see Figure 11), an external series
resister (RS) is connected between the
supply voltage and the SPX4041. RS
determines the current that flows through
the load (IL) and the reference (IQ). Since
RS = (VS - VR)/(IL+IQ)
V
S
V
IN
R
S
I
+ I
L
Q
3k
I
L
V
OUT
V
V
R
OUT
SPX4041
I
Q
SPX4041
Figure 11. SPX4041 Fixed Shunt Regulator
Figure 12 1.24V Reference Circuit
Date: 11/29/04
SPX4041 Precision 1.24V Shunt Voltage Reference
© Copyright 2004 Sipex Corporation
4
VIN = 12V to 20V
LO = Battery Low
86.7 k
500 k
1 M
7
3
2
+
+
12V
6
LM4250
-
-
8
3.5 M
500 k
4
22 M
150 pF
500 k
150 pF
SPX4041
SPX4041
Figure 13. Low Battery Detector
Figure 14. Micropower 10V Reference
PACKAGE PINOUTS
8-Pin SOIC (S)
SOT-23-3 (M)
TO-92 (N)
+
-
8
2
3
1
N/C
N/C
N/C
-
+
1
2
3
+
2
7
6
5
N/C
N/C
N/C
1
-
3
4
Bottom View
Top View
Top View
Date: 11/29/04
SPX4041 Precision 1.24V Shunt Voltage Reference
© Copyright 2004 Sipex Corporation
5
PACKAGE: 8 PIN NSOIC
D
Ø
e
E/2
L2
E1
E1/2
E
Ø
Seating Plane
Ø1
L
L1
Gauge Plane
VIEW C
1
b
INDEX AREA
(D/2 X E1/2)
TOP VIEW
A1
A
Seating Plane
A2
SIDE VIEW
8 Pin NSOIC JEDEC MO-012 (AA) Variation
MIN
1.35
0.1
1.25
0.31
0.17
NOM
-
-
-
-
-
MAX
1.75
0.25
1.65
0.51
0.24
SYMBOL
A
A1
A2
b
B
B
SEE VIEW C
c
D
E
E1
e
L
4.90 BSC
6.00 BSC
3.90 BSC
1.27 BSC
-
0.4
1.27
b
L1
L2
ø
1.04 REF
0.25 BSC
-
0º
5º
8º
15º
ø1
-
c
Note: Dimensions in (mm)
BASE METAL
SECTION B-B
WITH PLATING
Date: 11/29/04
SPX4041 Precision 1.24V Shunt Voltage Reference
© Copyright 2004 Sipex Corporation
6
PACKAGE: 3 PIN SOT-23
D
b
3
B
B
SEE VIEW C
E1
E
VIEW A-A
1
2
e
Gauge Plane
Seating Plane
e1
L
Ø
L1
VIEW C
A
A2
A
Seating Plane
C
3 Pin SOT-23 JEDEC TO-236 (AB) Variation
A
A1
SIDE VIEW
MIN
0.89
0.01
0.88
0.3
NOM
-
-
0.95
-
MAX
1.12
0.1
1.02
0.5
SYMBOL
A
A1
A2
b
c
D
e
e1
E
0.08
2.8
-
0.2
3.04
b
2.9
0.95 BSC
1.90 BSC
-
1.3
0.5
WITH PLATING
0.95
1.2
0.4
2.64
1.4
0.6
E1
L
c
L1
ø
0.54 REF
-
0º
8º
Note: Dimensions in (mm)
BASE METAL SECTION B-B
Date: 11/29/04
SPX4041 Precision 1.24V Shunt Voltage Reference
© Copyright 2004 Sipex Corporation
7
PACKAGE: 3 PIN TO-92
L
e1
e
W
D
A
b
S1
3 Pin TO-92
MIN
0.17
0.014
0.13
0.95
0.045
0.5
0.085
0.045
0.016
0.175
4º
NOM
MAX
0.195
0.02
0.155
0.105
0.055
0.61
0.095
0.06
0.022
0.195
6º
SYMBOL
A
b
E
e
e1
L
-
-
-
-
-
-
-
-
-
-
-
R
E
R
S1
W
D
a
Note: Dimensions in (inches)
a(2x)
Date: 11/29/04
SPX4041 Precision 1.24V Shunt Voltage Reference
© Copyright 2004 Sipex Corporation
8
ORDERING INFORMATION
Part Number
SPX4041AM
SPX4041AM/TR
SPX4041AS
SPX4041AS/TR
SPX4041AN
SPX4041AN/TR
SPX4041M
Accuracy
1.0%
1.0%
1.0%
1.0%
1.0%
1.0%
2.0%
2.0%
2.0%
2.0%
2.0%
2.0%
Output Voltage
1.24V
Package Type
3-Pin SOT-23
3-Pin SOT-23
8-Pin NSOIC
8-Pin NSOIC
3-Pin TO-92
3-Pin TO-92
3-Pin SOT-23
3-Pin SOT-23
8-Pin NSOIC
8-Pin NSOIC
3-Pin TO-92
3-Pin TO-92
1.24V
1.24V
1.24V
1.24V
1.24V
1.24V
SPX4041M/TR
SPX4041S
1.24V
1.24V
SPX4041S/TR
SPX4041N
1.24V
1.24V
SPX4041N/TR
1.24V
Available in lead free packaging. To order add "-L" suffix to part number.
Example: SPX4041S/TR = standard; SPX4041S-L/TR = lead free
/TR = Tape and Reel
Pack quantity is 2,000 for TO-92, 2,500 for NSOIC and SOT-23.
CLICK HERE TO ORDER SAMPLES
®
ANALOG EXCELLENCE
Sipex Corporation
Headquarters and Sales Office:
233 Hillview Dr
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Date: 11/29/04
SPX4041 Precision 1.24V Shunt Voltage Reference
© Copyright 2004 Sipex Corporation
9
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