Datasheet

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 2001-2012 Microchip Technology Inc. DS21653C-page 1

MCP1525/41

Features

• Precision Voltage Reference

• Output Voltages: 2.5V and 4.096V

• Initial Accuracy: ±1% (max.)

• Temperature Drift: ±50 ppm/°C (max.)

• Output Current Drive: ±2 mA

• Maximum Input Current: 100 µA @ +25°C (max.)

• Packages: TO-92 and SOT-23-3

• Industrial Temperature Range: -40°C to +85°C

Applications

• Battery-powered Systems

• Handheld Instruments

• Instrumentation and Process Control

• Test Equipment

• Data Acquisition Systems

• Communications Equipment

• Medical Equipment

• Precision Power supplies

• 8-bit, 10-bit, 12-bit A/D Converters (ADCs)

• D/A Converters (DACs)

Typical Application Circuit

Description

The Microchip Technology Inc. MCP1525/41 devices

are 2.5V and 4.096V precision voltage references that

use a combination of an advanced CMOS circuit

design and EPROM trimming to provide an initial

tolerance of ±1% (max.) and temperature stability of

±50 ppm/°C (max.). In addition to a low quiescent

current of 100 µA (max.) at 25°C, these devices offer a

clear advantage over the traditional Zener techniques

in terms of stability across time and temperature. The

output voltage is 2.5V for the MCP1525 and 4.096V for

the MCP1541. These devices are offered in SOT-23-3

and TO-92 packages, and are specified over the

industrial temperature range of -40°C to +85°C.

Temperature Drift

Package Types

Basic Configuration

OUT

REF

MCP1525

MCP1541

1 µF to 10 µF

0.1 µF

(optional)

2.475

2.480

2.485

2.490

2.495

2.500

2.505

2.510

2.515

2.520

2.525

-50-250 255075100

Ambient Temperature (°C)

MCP1525 Output Voltage

(V)

4.040

4.050

4.060

4.070

4.080

4.090

4.100

4.110

4.120

4.130

4.140

MCP1541 Output Voltage

(V)

MCP1525

MCP1541

OUT

MCP1525

MCP1541

TO-92

MCP1525

MCP1541

SOT-23-3

2.5V and 4.096V Voltage References

21653C.book Page 1 Thursday, January 10, 2013 12:55 PM

Summary of content (20 pages)

PAGE 1
21653C.book Page 1 Thursday, January 10, 2013 12:55 PM MCP1525/41 2.5V and 4.096V Voltage References Features Description • • • • • • • • The Microchip Technology Inc. MCP1525/41 devices are 2.5V and 4.096V precision voltage references that use a combination of an advanced CMOS circuit design and EPROM trimming to provide an initial tolerance of ±1% (max.) and temperature stability of ±50 ppm/°C (max.). In addition to a low quiescent current of 100 µA (max.
PAGE 2
1653C.book Page 2 Thursday, January 10, 2013 12:55 PM MCP1525/41 1.0 ELECTRICAL CHARACTERISTICS † Notice: Stresses above 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 those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.
PAGE 3
21653C.book Page 3 Thursday, January 10, 2013 12:55 PM MCP1525/41 AC ELECTRICAL SPECIFICATIONS Electrical Characteristics: Unless otherwise indicated, TA = +25°C, VIN = 5.0V, VSS = GND, IOUT = 0 mA and CL = 1 µF. Parameter Sym Min Typ Max Units BW — 100 — kHz Conditions AC Response Bandwidth Input and Load Capacitors (see Figure 4-1) Input Capacitor CIN — 0.1 — µF Notes 1 Load Capacitor CL 1 — 10 µF Notes 2 Eno — 90 — µVP-P 0.
PAGE 4
21653C.book Page 4 Thursday, January 10, 2013 12:55 PM MCP1525/41 1.1.4 DROPOUT VOLTAGE 1.1.9 The dropout voltage of these devices is measured by reducing VIN to the point where the output drops by 1%. Under these conditions the dropout voltage is equal to: EQUATION 1-2: V D RO P = V IN – V O UT The dropout voltage is affected temperature and load current.
PAGE 5
21653C.book Page 5 Thursday, January 10, 2013 12:55 PM MCP1525/41 2.0 TYPICAL PERFORMANCE CURVES Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g.
PAGE 6
21653C.book Page 6 Thursday, January 10, 2013 12:55 PM MCP1525/41 4.0975 90 Output Voltage (V) 70 MCP1541 60 50 40 30 1 1.E+00 10 1.E+01 100 1k 1.E+02 1.E+03 Frequency (Hz) 10k 1.E+04 4.098 2.505 4.097 2.504 MCP1525 Output Voltage (V) 4.096 IOUT = +2 mA IOUT = 0 mA IOUT = -2 mA 2.503 2.502 4.095 4.094 2.501 4.093 2.500 4.092 2.499 4.091 2.498 MCP1541 Output Voltage (V) 2.506 Output Voltage vs.
PAGE 7
21653C.book Page 7 Thursday, January 10, 2013 12:55 PM MCP1525/41 MCP1541 MCP1525 3.0 FIGURE 2-13: Voltage. 5.0 5.5 VOUT MCP1525 Time (100 µs/div) Input Current vs. Input Bandwidth = 0.1 Hz to 10 Hz Eno = 22 µVRMS = 145 µVP-P Output Noise Voltage (20 µV/div) MCP1541 3.5 4.0 4.5 Input Voltage (V) FIGURE 2-16: Response. 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 VOUT MCP1525 FIGURE 2-17: Response.
PAGE 8
21653C.book Page 8 Thursday, January 10, 2013 12:55 PM MCP1525/41 3.0 PIN DESCRIPTIONS Descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE. MCP1525, MCP1541 (TO-92-3) MCP1525, MCP1541 (SOT-23-3) 3 1 VIN 2 2 VOUT 1 3 VSS 3.1 Input Voltage (VIN) VIN functions as the positive power supply input (or operating input). An optional 0.1 µF ceramic capacitor can be placed at this pin if the input voltage is too noisy; it needs to be within 5 mm of this pin.
PAGE 9
21653C.book Page 9 Thursday, January 10, 2013 12:55 PM MCP1525/41 4.0 APPLICATIONS INFORMATION 4.1.4 4.1 Application Tips Mechanical stress due to Printed Circuit Board (PCB) mounting can cause the output voltage to shift from its initial value. Devices in the SOT-23-3 package are generally more prone to assembly stress than devices in the TO-92 package. To reduce stress-related output voltage shifts, mount the reference on low-stress areas of the PCB (i.e.
PAGE 10
21653C.book Page 10 Thursday, January 10, 2013 12:55 PM MCP1525/41 4.2 Typical Application Circuits 4.2.1 NEGATIVE VOLTAGE REFERENCE A negative precision voltage reference can be generated by using the MCP1525 or MCP1541 in the configuration shown in Figure 4-3. 4.2.2 The MCP1525 and MCP1541 were carefully designed to provide a voltage reference for Microchip’s 10-bit and 12-bit families of ADCs.
PAGE 11
21653C.book Page 11 Thursday, January 10, 2013 12:55 PM MCP1525/41 5.0 PACKAGING INFORMATION 5.1 Package Marking Information 3-Lead TO-92 (Leaded) Example: XXXXXX XXXXXX XXYYWW NNN MCP 1525I TO0544 256 3-Lead TO-92 (Lead Free) Example: XXXXXX XXXXXX XXXXXX YWWNNN MCP 1525I e3 TO^^ 544256 3-Lead SOT-23-3 Example: XXNN Device I-Temp Code MCP1525 VANN MCP1541 VBNN Note: Legend: XX...X Y YY WW NNN e3 * Note: VA25 Applies to 3-Lead SOT-23.
PAGE 12
21653C.book Page 12 Thursday, January 10, 2013 12:55 PM MCP1525/41 3-Lead Plastic Transistor Outline (TO) (TO-92) Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging E1 D n 1 L 1 2 3  B p c A R Units Dimension Limits n p  MIN INCHES* NOM MAX MILLIMETERS NOM 3 1.27 3.30 3.62 4.45 4.71 4.32 4.64 2.16 2.29 12.70 14.10 0.36 0.43 0.41 0.48 4 5 2 3 MIN Number of Pins 3 Pitch .
PAGE 13
21653C.book Page 13 Thursday, January 10, 2013 12:55 PM MCP1525/41 3-Lead Plastic Small Outline Transistor (TT) (SOT23) Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.
PAGE 14
21653C.book Page 14 Thursday, January 10, 2013 12:55 PM MCP1525/41 NOTES: DS21653C-page 14  2001-2012 Microchip Technology Inc.
PAGE 15
21653C.book Page 15 Thursday, January 10, 2013 12:55 PM MCP1525/41 APPENDIX A: REVISION HISTORY Revision C (December 2012) Added a note to each package outline drawing. Revision B (February 2005) The following is the list of modifications: 1. 2. 3. 4. 5. 6. Added bandwidth and capacitor specifications (Section 1.0 “Electrical Characteristics”). Moved Section 1.1 “Specification Descriptions and Test Circuits” to the specifications section (Section 1.0 “Electrical Characteristics”).
PAGE 16
21653C.book Page 16 Thursday, January 10, 2013 12:55 PM MCP1525/41 NOTES: DS21653C-page 16  2001-2012 Microchip Technology Inc.
PAGE 17
21653C.book Page 17 Thursday, January 10, 2013 12:55 PM MCP1525/41 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO. X /XX Device Temperature Range Package Device Temperature Range Package MCP1525: MCP1541: I = = 2.5V Voltage Reference = 4.096 Voltage Reference Examples: a) MCP1525T-I/TT: Tape and Reel, Industrial Temperature, SOT23 package.
PAGE 18
21653C.book Page 18 Thursday, January 10, 2013 12:55 PM MCP1525/41 NOTES: DS21653C-page 18  2001-2012 Microchip Technology Inc.
PAGE 19
21653C.book Page 19 Thursday, January 10, 2013 12:55 PM Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature.
PAGE 20
21653C.book Page 20 Thursday, January 10, 2013 12:55 PM Worldwide Sales and Service AMERICAS ASIA/PACIFIC ASIA/PACIFIC EUROPE Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: http://www.microchip.com/ support Web Address: www.microchip.