AD580KH

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Technical content

High Precision,

2.5 V IC Reference

Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent ri ghts of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.

FEATURES

Laser-trimmed to high accuracy: 2.500 V ±0.4% 3-terminal device: voltage in/voltage out Excellent temperature stability: 10 ppm/°C (AD580M, U) Excellent long-term stability: 250 μV (25 μV/month) Low quiescent current: 1.5 mA maximum Small, hermetic IC package: TO-52 can MIL-STD-883 compliant versions available FUNCTIONAL BLOCK DIAGRAM EOUT 00525-B-001 BOTTOM VIEW Figure 1. GENERAL DESCRIPTION The AD580 is a 3-terminal, low cost, temperature-compensated, bandgap voltage reference, which provides a fixed 2.5 V output for inputs between 4.5 V and 30 V . A unique combination of advanced circuit design and laser-wafer trimmed thin film resistors provide the AD580 with an initial tolerance of ±0.4%, a temperature stability of better than 10 ppm/°C, and long-term stability of better than 250 μV . In addition, the low quiescent current drain of 1.5 mA maximum offers a clear advantage over classical Zener techniques. The AD580 is recommended as a stable reference for all 8-, 10-, and 12-bit D/A converters that require an external reference. In addition, the wide input range of the AD580 allows operation with 5 volt logic supplies, making the AD580 ideal for digital panel meter applications or whenever only a single logic power supply is available. The AD580J, K, L, and M are specified for operation over the 0°C to +70°C temperature range; the AD580S, T, and U are specified for operation over the extended temperature range of –55°C to +125°C. PRODUCT HIGHLIGHTS 1. Laser-trimming of the thin film resistors minimizes the AD580 output error. For example, the AD580L output tolerance is ±10 mV . 2. The three-terminal voltage in/voltage out operation of the AD580 provides regulated output voltage without any external components. 3. The AD580 provides a stable 2.5 V output voltage for input voltages between 4.5 V and 30 V . The capability to provide a stable output voltage using a 5 V input makes the AD580 an ideal choice for systems that contain a single logic power supply. 4. Thin film resistor technology and tightly controlled bipolar processing provide the AD580 with temperature stabilities to 10 ppm/°C and long-term stability better than 250 μV . 5. The low quiescent current drain of the AD580 makes it ideal for CMOS and other low power applications. 6. The AD580 is available in versions compliant with MIL- STD-883. Refer to the Analog Devices Military Products Data Book or the current AD580/AD883B data sheet for detailed specifications.

Rev. B | Page 2 of 8 TABLE OF CONTENTS The AD580 as a Low Power, Low Voltage, Precision Reference

REVISION HISTORY

8/04—Changed from Rev. A to Rev. B

Table 1. VIN = 15 V and 25°C and max specifications are guaranteed, although only those shown in boldface are tested on all production units.

Rev. B | Page 4 of 8 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Rating Input Voltage 40 V Power Dissipation @ 25°C Ambient Temperature 350 mW Derate above 25°C 2.8 mW/°C Lead Temperature (Soldering 10 sec) 300°C Thermal Resistance Junction-to-Case 100°C Junction-to-Ambient 360°C/W Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. AD580 CHIP DIMENSIONS AND PAD LAYOUT Dimensions shown in inches and (millimeters). 00525-B-002 *BOTH EOUT PADS MUST BE CONNECTED TO THE OUTPUT. 0.075 (1.90) EOUT* –E 0.046 (1.16) Figure 2. The AD580 is also available in chip form. Consult the factory for specifications and applications information. ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.

Figure 7. Typical AD580K Output Voltage vs. Temperature line rejection versus frequency.

1 Hz (3 dB point) to a 3 dB high end shown on the horizontal

Figure 8. AD580 Line Rejection Plot Figure 9. Peak-to-Peak Output Noise vs. Frequency Figure 10. Input Current vs. Input Voltage (Integral Loads) 1 mA to 10 mA with the insertion of a single external resistor. limiter for ILIM = 1, 2, 3, 4, and 5 mA. Figure 11. A Two-Component Precision Current Limiter

Rev. B | Page 8 of 8 OUTLINE DIMENSIONS CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETERS DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN 0.250 (6.35) MIN 0.150 (3.81) 0.115 (2.92) 0.050 (1.27) MAX 0.019 (0.48) 0.016 (0.41) 0.021 (0.53) MAX0.030 (0.76) MAX BASE & SEATING PLANE 0.195 (4.95) 0.178 (4.52) 0.230 (5.84) 0.209 (5.31) 0.500 (12.70) MIN 0.046 (1.17) 0.036 (0.91) 0.048 (1.22) 0.028 (0.71) 0.050 (1.27) T.P. 0.100 (2.54) T.P. 0.050 (1.27) T.P. 45° T.P. Figure 13. TO–52 Package

Description

AD580JH ±75 mV 85 ppm/°C –55°C to +125°C TO–52 H (Metal Can) AD580KH ±25 mV 40 ppm/°C –55°C to +125°C TO–52 H (Metal Can) AD580LH ±10 mV 25 ppm/°C –55°C to +125°C TO–52 H (Metal Can) AD580LMH ±10 mV 10 ppm/°C –55°C to +125°C TO–52 H (Metal Can) AD580SH ±25 mV 55 ppm/°C –55°C to +125°C TO–52 H (Metal Can) AD580SH/883B ±25 mV 55 ppm/°C –55°C to +125°C TO–52 H (Metal Can) AD580TH ±10 mV 25 ppm/°C –55°C to +125°C TO–52 H (Metal Can) AD580UH ±10 mV 10 ppm/°C –55°C to +125°C TO–52 H (Metal Can) AD580UH/883B ±10 mV 10 ppm/°C –55°C to +125°C TO–52 H (Metal Can) AD580TCHIPS ±10 mV DIE © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the prop erty of their respective owners. C00525-0-8/04(B)