VRE410
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VRE410 Precision Dual Voltage Reference FEATURES • • • • • • ±10 V Output, ± 1.6 mV Temperature Drift: 1.0 ppm/°C Low Noise: 6 μVP-P (0.1-10 Hz) Tracking Error: 0.3 mV Excellent Line Regulation: 6 ppm/V Typical Surface Mount Package APPLICATIONS The VRE410 is recommended for use as a reference for high precision D/A and A/D converters which require an external precision reference. The device is also ideal for calibrating scale factor on high resolution A/D converters. The VRE410 offers superior performance over monolithic references. DESCRIPTION The VRE410 is a low cost, high precision, ±10 V reference. Available in a 14-pin SMT package, the device is ideal for new designs that need a high performance reference. The device provides ultrastable ±10 V output with ±1.6 mV initial accuracy and a temperature coefficient of 1.0 ppm/°C. This improvement in accuracy is made possible by a unique, patented multipoint laser compensation technique. Another key feature of this reference is the 0.5 mV tracking error between the positive and negative output voltages over the full operating temperature range. This is extremely important in high performance systems for reducing overall system errors. SELECTION GUIDE Initial Error (mV) Temp. Coeff. (ppm/°C) © Apex Microtechnology Inc. All rights r

TYPICAL CONNECTION Figure 1: Typical Connection

VRE410 SPECIFICATIONS VPS = +15 V, T = +25°C, RL = 10 kΩ unless otherwise noted. ABSOLUTE MAX RATINGS Parameter Power Supply Storage Temperature Short Circuit Protection ELECTRICAL SPECIFICATIONS Parameter Output Voltage Warmup Drift Long-Term Stability Output Current Line Regulation Load Regulation Power Supply Current, +PS 4 Power Supply Current, -PS 4 1. The specified values are without external trim. 2. The temperature coefficient (TC) is determined by the box method using the following formula: V MAX – V MIN 6 TC = --------------------------------------------------------------------- ...

TYPICAL PERFORMANCE GRAPHS Figure 2: VOUT vs. Temperature Figure 3: VOUTvs. Temperature

Figure 6: Quiescent Current vs. Temperature Figure 7: Junction Temp Rise vs. Output Current Figure 8: PSRR vs. Frequency 120 100

Figure 9: Quiescent Current vs. Figure 10: Junction Temp Rise vs. Output Current Figure 11: PSRR vs. Frequency

VRE410 BLOCK DIAGRAM Figure 12: Block Diagram THEORY OF OPERATION The following discussion refers to the block diagram in Figure 12. In operation, approximately 6.3 V is applied to the noninverting input of the op amp. The voltage is amplified by the op amp to produce a 10 V output. The gain is determined by the networks R1 and R2: G=1 + R2/R1. The 6.3 V zener diode is used because it is the most stable diode over time and temperature. The zener operating current is derived from the regulated output voltage through R3. This feedback arrangement provides a closely regulated zener current....

PACKAGE OPTIONS 1. Dimensions are inches & [millimeters]. 2. Bracketed alternate units are for reference only. 3. Pins: Phosphor bronze, Sn/Ag 96/4 solder dipped. 4. Material: Alumina Ceramic substrate and cover.

NEED TECHNICAL HELP? CONTACT APEX SUPPORT! For all Apex Microtechnology product questions and inquiries, call toll free 800-546-2739 in North America. For inquiries via email, please contact apex.support@apexanalog.com. International customers can also request support by contacting their local Apex Microtechnology Sales Representative. To find the one nearest to you, go to www.apexanalog.com IMPORTANT NOTICE Apex Microtechnology, Inc. has made every effort to insure the accuracy of the content contained in this document. However, the information is subject to change without notice and is...