Datasheet SPX4041AM-2, SPX4041AM-3, SPX4041AN-2, SPX4041AN-3, SPX4041AS-2 Datasheet (Sipex Corporation)

Rev. 10/25/00

Precision Micropower 1.24V Shunt Voltage Reference

FEATURES APPLICATIONS

•

Low temperature coefficient 50 ppm/°C • Constant Current Source

•

Operating current range 100µA to 15 mA • Digital Voltmeter

•

Low power, 250 mW @ IIN =100 mA • Power Supply Monitor

•

Two terminal "Zener" operation • Precision Regulators

•

Small package: SOT - 23, TO-92, and SO-8 • Battery-Powered Equipment

•

Fixed reverse breakdown voltage 2.5 Volt • Instrumentation

•

No output capacitance required • Automotive Electronics

•

Output voltage tolerance ± 0.5% • Data Acquisition Systems

•

Energy Management

PRODUCT DESCRIPTION

The SPX4041 is a two-terminal, temperature compensated, band-gap voltage reference, which provides a fixed 1.24V output for input
currents between 500 µA to 5mA. The bandgap voltage (1.24V) is independently laser trimmed from the output voltage to achieve a
very low tempco, then the output voltage is laser trimmed to 1.24 volts. This trimming technique and the low tempco (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 sub­miniature (3mm × 1.3mm) SOT-23, SO-8 surface mount package, or TO-92 package. The operating temperature is -40°C to 85°C.

The SPX4041 advanced design eliminates the need for an external stabilized capacitor while insuring stability with any capacitive
load, making them easy to use.

PIN CONNECTIONS

Top View

2

1

3

4

8

7

6

5

8-Pin Surface Mount (S) SOT-23-3 (M)

Top View

2

3

+

-

1

Bottom View

TO-92 (N)

132

N/C

N/C

N/C

- N/C

N/C

N/C

+

SPX4041

Rev. 10/25/00

SPX4041

ABSOLUTE MAXIMUM RATINGS

Reverse Current................................................................20mA Power Dissipation at 25°C

Forward Current...............................................................10mA M Package ......................................................300mW

Storage Temperature ...................................... -65°C to +150°C N Package ....................................................... 550mW

Lead Temperature (Soldering) ........................................300°C S Package........................................................ 525mW

Temperature Range................................... -40°C ≤ T

A

≤ +85°C

ELECTRICAL CHARACTERISTICS

Electrical Characteristics at IIN = 1000µA, and TA = +25°C unless otherwise noted. .

Boldface limits apply over temperature.

Parameters

Conditions

SPX4041A2

Min Typ Max

SPX4041B2

Min Typ Max

Units

Reverse Breakdown
Voltage

I

R

=500 µA

1.24 1.24 V

Reverse Breakdown
Tolerance

I

R

=500 µA

±

25

±

49

±

25

±

49

mV
mV

Output Impedance 0.60 2 0.60 2

Ω

Noise Voltage

0.1kHz≤f ≤10Hz

15 15

µ

V p-p

Tempco Note 1 50 100

ppm/°C

Turn-on Setting 0.1% of V

OUT

30 30

µ

Sec
Operating Current
Range

Note 2 0.5 5

15

0.5 5
15

mA

Temp. Range -40 85 -40 85

°

C

Parameters

Conditions

SPX4041A3

Min Typ Max

SPX4041B3

Min Typ Max

Units

Reverse Breakdown
Voltage

I

R

=500 µA

1.24 1.24 V

Reverse Breakdown
Tolerance

I

R

=500 µA

±

50

±

74

±

50

±

74

mV
mV

Output Impedance 0.60 2 0.60 2

Ω

Noise Voltage

0.1kHz≤f ≤10Hz

15 15

µ

V p-p

Tempco Note 1 50 100

ppm/°C

Turn-on Setting 0.1% of V

OUT

30 30

µ

Sec
Operating Current
Range

Note 2 0.1 5

15

0.1 5
15

mA

Temp. Range -40 85 -40 85

°

C

Rev. 10/25/00

SPX4041

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.

SPX4041 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.

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.

Conventional Shunt Regulator

In a conventional shunt regulator application (see Figure 1),
an external series resister (R

S

) is connected between the

supply voltage and the SPX4041. R

S

determines the current

that flows through the load (I

L

) and the reference(IQ). Since

load current and supply voltage may vary, R

S

should be small

enough to supply at least the minimum acceptable I

Q

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 I

L

is at its minimum, RS should
be large enough so that the current flowing through the
SPX4041-x.x is less than 15mA

R

S

is determined by the supply voltage (VS), the load and

operating current (I

L

and IQ), reference’s reverse breakdown

voltage (V

R

).

RS = (VS - VR)/(IL+IQ)

Figure 1. SPX4041 Fixed

Shunt Regulator Application

V

S

R

S

V

R

I

L

I

Q

IO + I

L

V

O

SPX4041

Rev. 10/25/00

SPX4041

DRAWING PACKAGE
8-PIN SOIC (S)

Pin 1

1.27 (0.50)
BSC

3.8 (0.150)

4.0 (0.158)

4.6 (0.181)

5.2 (0.205)

5.8 (0.228)

6.2 (0.244)

4.8 (0.188)

5.0 (0.197)

0.49 (0.019)

0.56 (0.022)

0.35 (0.014)

0.45 (0.018)

0.10 (0.004)

0.20 (0.008)

0.19 (0.007)

0.22 (0.009)

1.35 (0.053)

1.75 (0.069)

0.61 (0.024)

0.78 (0.031)

3°-6

°

0.64 (0.025)

0.77 (0.030)

45

°

7°(4 PLCS)

7

°

(4 PLCS)

0.37 (0.015)
BSC

Rev. 10/25/00

SPX4041

DRAWING PACKAGE
SOT-23-3L (M)

0.015 - 0.018

(0.381 - 0.457)

0.020 - 0.024

(0.508 - 0.610)

0.110 - 0.120

(2.794 - 3.048)

0.001 - 0.004

(0.025 - 0.102)

0.030 - 0.041

(0.762 - 1.041)

0.018 - 0.024

(0.457 - 0.610)

0.070 - 0.080

(1.778 - 2.032)

0.035 - 0.040

(0.889 - 1.016)

0.047 - 0.055

(1.194 - 1.397)

0.083 - 0.098

(2.108 - 2.489)

0.003 - 0.005

(0.076 - 0.127)

Rev. 10/25/00

SPX4041

DRAWING PACKAGE
TO-92 (N)

1

2

3

0.055 (1.397)

0.045 (1.143)

0.145 (3.683)

0.135 (3.429)

10° typ.

BOTTOM VIEW

0.185 (4.699)

0.045 (1.143)

0.185 (4.699)

0.175 (4.445)

0.085 (2.159) Diameter

0.090 (2.286) typ.

Seating Plane

0.016 (0.406)

0.014 (0.356)

0.055 (1.397)

0.045 (1.143)

0.105 (2.667)

0.095 (2.413)

0.500 (12.70) Min.

0.025 (0.635) Max
Uncontrolled
Lead Diameter

5° typ.

5° typ.

0.090 (2.286) Radius typ.

0.0155 (0.3937)

0.0145 (0.3683)

Rev. 10/25/00

SPX4041

ORDERING INFORMATION

Ordering No. Temp Coef. Output Accuracy Packages

SPX4041AN-2

100ppm 1% 3 Lead TO-92

SPX4041AN-3

100ppm 2% 3 Lead TO-92

SPX4041BN-2

150ppm 1% 3 Lead TO-92

SPX4041BN-3

150ppm 2% 3 Lead TO-92

SPX4041AM-2

100ppm 1% 3 Lead SOT-23

SPX4041AM-3

100ppm 2% 3 Lead SOT-23

SPX4041BM-2

150ppm 1% 3 Lead SOT-23

SPX4041BM-3

150ppm 2% 3 Lead SOT-23

SPX4041AS-2

100ppm 1% 8 Lead SOIC

SPX4041AS-3

100ppm 2% 8 Lead SOIC

SPX4041BS-2

150ppm 1% 8 Lead SOIC

SPX4041BS-3

150ppm 2% 8 Lead SOIC

SIGNAL PROCESSING EXCELLENCE

Sipex Corporation

Headquarters and Main Offices:

22 Linnell Circle
Billerica, MA 01821
TEL: [phone]
FAX: [phone]
e-mail: [e-mail]

233 South Hillview Drive
Milpitas, CA 95035
TEL: [phone]
FAX: [phone]

Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or ci rcuit described
hereing; neither does it convey any license under its patent rights nor the rights of others.

Corporation