Pin Programmable, Precision Voltage Reference …

1 pin programmable , Precision Voltage Reference data Sheet AD584 Rev. C 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 rights of analog devices . Trademarks and registered trademarks are the property of their respective owners. One Technology Way, Box 9106, Norwood, MA 02062-9106, Tel: Fax: 1978 2012 analog devices , Inc. All rights reserved. FEATURES Four programmable output voltages V, V, V, and V Laser-trimmed to high accuracies No external components required Trimmed temperature coefficient 15 ppm/ C maximum, 0 C to 70 C (AD584K) 15 ppm/ C maximum, 55 C to +125 C (AD584T) Zero output strobe terminal provided 2-terminal negative Reference : capability (5 V and above) Output sources or sinks current Low quiescent current: mA maximum 10 mA current output capability MIL-STD-883 compliant versions available PIN CONFIGURATIONS Figure 1.

2 8-Pin TO-99 Figure 2. 8-Lead PDIP GENERAL DESCRIPTION The AD584 is an 8-terminal Precision Voltage Reference offering pin programmable selection of four popular output voltages: V, V, V and V. Other output voltages, above, below, or between the four standard outputs, are available by the addition of external resistors. The input Voltage can vary between V and 30 V. Laser wafer trimming (LWT) is used to adjust the pin programmable output levels and temperature coefficients, resulting in the most flexible high Precision Voltage Reference available in monolithic form. In addition to the programmable output voltages, the AD584 offers a unique strobe terminal that permits the device to be turned on or off. When the AD584 is used as a power supply Reference , the supply can be switched off with a single, low power signal. In the off state, the current drained by the AD584 is reduced to approximately 100 A.

3 In the on state, the total supply current is typically 750 A, including the output buffer amplifier. The AD584 is recommended for use as a Reference for 8-, 10-, or 12-bit digital-to- analog converters (DACs) that require an external Precision Reference . In addition, the device is ideal for analog -to-digital converters (ADCs) of up to 14-bit accuracy, either successive approximation or integrating designs, and in general, it can offer better performance than that provided by standard self-contained references. The AD584J and AD584K are specified for operation from 0 C to +70 C, and the AD584S and AD584T are specified for the 55 C to +125 C range. All grades are packaged in a hermetically sealed, eight-terminal TO-99 metal can, and the AD584J and AD584K are also available in an 8-lead PD I P. PRODUCT HIGHLIGHTS 1. The flexibility of the AD584 eliminates the need to design-in and inventory several different Voltage references.

4 Furthermore, one AD584 can serve as several references simultaneously when buffered properly. 2. Laser trimming of both initial accuracy and temperature coefficient results in very low errors overtemperature without the use of external components. 3. The AD584 can be operated in a 2-terminal Zener mode at a 5 V output and above. By connecting the input and the output, the AD584 can be used in this Zener configuration as a negative Reference . 4. The output of the AD584 is configured to sink or source currents. This means that small reverse currents can be tolerated in circuits using the AD584 without damage to the Reference and without disturbing the output Voltage (10 V, V, and 5 V outputs). 5. The AD584 is available in versions compliant with MIL-STD-883. Refer to the analog devices current AD584/883B data sheet for detailed specifications. This can be found under the Additional data Sheets section of the AD584 product page.

5 1267358V+TAB4AD584 TOP VIEW(Not to Scale) +8 CAP7 VBG6 STROBE5AD584 TOP VIEW(Not to Scale)00527-002AD584 data Sheet Rev. C | Page 2 of 12 TABLE OF CONTENTS Features .. 1 Pin Configurations .. 1 General Description .. 1 Product Highlights .. 1 Revision History .. 2 Specifications .. 3 Absolute Maximum Ratings .. 5 ESD Caution .. 5 Theory of Operation .. 6 Applying the AD584 .. 6 Performance over Temperature .. 7 Output Current Characteristics ..7 Dynamic Performance ..7 Noise Filtering ..8 Using the Strobe Terminal ..8 Percision High Current The AD584 as a Current Negative Reference Voltages from an AD584 ..9 10 V Reference with Multiplying CMOS DACs or ADCs ..9 Precision DAC Reference .. 10 Outline Dimensions .. 11 Ordering Guide .. 12 REVISION HISTORY 5/12 Rev. B to Rev. C Deleted AD584L .. Universal Changes to Features Section, General Description Section and Product Highlights Section.

6 1 Deleted Metalization Photograph .. 4 Changes to 10 V Reference with Multiplying CMOS DACs or ADCs Section .. 9 Changes to Precision DAC Reference Section and Figure 10 Updated Outline Dimensions .. 11 Changes to Ordering Guide .. 12 7/01 Rev. A to Rev. B data Sheet AD584 Rev. C | Page 3 of 12 SPECIFICATIONS VIN = 15 V and 25 C, unless otherwise noted. Specifications shown in boldface are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels. All minimum and maximum specifications are guaranteed; although, only those shown in boldface are tested on all production units. Table 1. AD584J AD584K Model Min Typ Max Min Typ Max Unit OUTPUT Voltage TOLERANCE Maximum Error at Pin 1 for Nominal Outputs of V 30 10 mV V 20 8 mV V 15 6 mV V mV OUTPUT Voltage CHANGE Maximum Deviation from 25 C Value, TMIN to TMAX1 V, V, and V Outputs 30 15 ppm/ C V Output 30 15 ppm/ C Differential Temperature Coefficients Between Outputs 5 3 ppm/ C QUIESCENT CURRENT mA Temperature Variation A/ C TURN-ON SETTLING TIME TO 200 200 s NOISE ( Hz TO 10 Hz) 50 50 V p-p LONG-TERM STABILITY 25 25 ppm/1000 Hrs SHORT-CIRCUIT CURRENT 30 30 mA LINE REGULATION (NO LOAD) 15 V VIN 30 V %/V (VOUT + V)

7 VIN 15 V %/V LOAD REGULATION 0 IOUT 5 mA, All Outputs 20 50 20 50 ppm/mA OUTPUT CURRENT VIN VOUT + V Source at 25 C 10 10 mA Source TMIN to TMAX 5 5 mA Sink TMIN to TMAX 5 5 mA TEMPERATURE RANGE Operating 0 70 0 70 C Storage 65 +175 65 +175 C PACKAGE OPTION 8-Pin Metal Header (TO-99, H-08) AD584JH AD584KH 8-Lead Plastic Dual In-Line Package (PDIP, N-8) AD584JN AD584KN 1 Calculated as average over the operating temperature range. AD584 data Sheet Rev. C | Page 4 of 12 Specifications shown in boldface are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels. All minimum and maximum specifications are guaranteed; although, only those shown in boldface are tested on all production units. Table 2. AD584S AD584T Model Min Typ Max Min Typ Max Unit OUTPUT Voltage TOLERANCE Maximum Error at Pin 1 for Nominal Outputs of V 30 10 mV V 20 8 mV V 15 6 mV V mV OUTPUT Voltage CHANGE Maximum Deviation from 25 C Value, TMIN to TMAX1 V, V, and V Outputs 30 15 ppm/ C V Output 30 20 ppm/ C Differential Temperature Coefficients Between Outputs 5 3 ppm/ C QUIESCENT CURRENT mA Temperature Variation A/ C TURN-ON SETTLING TIME TO 200 200 s NOISE ( Hz TO 10 Hz) 50 50 V p-p LONG-TERM STABILITY 25 25 ppm/1000 Hrs SHORT-CIRCUIT CURRENT 30 30 mA LINE REGULATION (NO LOAD) 15 V VIN 30 V %/V (VOUT + V)

8 VIN 15 V %/V LOAD REGULATION 0 IOUT 5 mA, All Outputs 20 50 20 50 ppm/mA OUTPUT CURRENT VIN VOUT + V Source at 25 C 10 10 mA Source TMIN to TMAX 5 5 mA Sink TMIN to TMAX 5 5 mA TEMPERATURE RANGE Operating 55 +125 55 +125 C Storage 65 +175 65 +175 C PACKAGE OPTION 8-Pin Metal Header (TO-99, H-08) AD584SH AD584TH 1 Calculated as average over the operating temperature range. data Sheet AD584 Rev. C | Page 5 of 12 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Rating Input Voltage VIN to Ground 40 V Power Dissipation at 25 C 600 mW Operating Junction Temperature Range 55 C to +125 C Lead Temperature (Soldering 10 sec) 300 C Thermal Resistance Junction-to-Ambient (H-08A) 150 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 indicated in the operational section of this specification is not implied.

9 Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ESD CAUTION AD584 data Sheet Rev. C | Page 6 of 12 THEORY OF OPERATION APPLYING THE AD584 With power applied to Pin 8 and Pin 4 and all other pins open, the AD584 produces a buffered nominal V output between Pin 1 and Pin 4 (see Figure 3). The stabilized output Voltage can be reduced to V, V, or V by connecting the programming pins as shown in Ta b l e 4. Table 4. Output Voltage (V) Pin Programming Join the V (Pin 3) and V (Pin 2) pins. Connect the V pin (Pin 2) to the output pin (Pin 1). Connect the V pin (Pin 3) to the output pin (Pin 1). The options shown in Ta bl e 4 are available without the use of any additional components. Multiple outputs using only one AD584 can be provided by buffering each Voltage programming pin with a unity-gain, noninverting op amp.

10 Figure 3. Variable Output Options The AD584 can also be programmed over a wide range of output voltages, including voltages greater than 10 V, by the addition of one or more external resistors. Figure 3 illustrates the general adjustment procedure, with approximate values given for the internal resistors of the AD584. The AD584 may be modeled as an op amp with a noninverting feedback connection, driven by a high stability V band gap Reference (see Figure 5 for schematic). When the feedback ratio is adjusted with external resistors, the output amplifier can be made to multiply the Reference Voltage by almost any convenient amount, making popular outputs of V, V, V, or V easy to obtain. The most general adjustment (which gives the greatest range and poorest resolution) uses R1 and R2 alone (see Figure 3). As R1 is adjusted to its upper limit, the pin (Pin 3) is connected to the output, which reduces to V.