VRE3025LS

VRE3025 Precision Voltage Reference RoHS COMPLIANT FEATURES • • • • • • • • • +2.5 V Output, ± 0.375 mV Temperature Drift: 1.0 ppm/°C Low Noise: 1.5 μVP-P (0.1 Hz-10 Hz) Low Thermal Hysteresis: 1 ppm Typical ±15 mA Output Source and Sink Current Excellent Line Regulation: 5 ppm/V Typical Optional Noise Reduction and Voltage Trim Industry Standard Pinout: 8-pin DIP or Surface Mount Package APPLICATIONS The VRE3025 is recommended for use as a reference for 14 and 16 bit data converters which require an external precision reference. The device is also ideal for calibrating scale factor on high resolution data converters. The VRE3025 offers superior performance over monolithic references. DESCRIPTION The VRE3025 is a low cost, high precision +2.5 V reference that operates from +10 V. The device features a buried zener for low noise and excellent long term stability. Packaged in either an 8-pin DIP or SMT option, the device is ideal for high resolution data conversion systems. The device provides ultrastable +2.5 V output with ±0.375 mV initial accuracy and a temperature coefficient of 1.0 ppm/°C. This improvement in accuracy is made possible by a unique, patented multi-point laser compensation technique. Significant improvements have been made in other performance parameters as well, including initial accuracy, warm-up drift, line regulation, and long-term stability, making the VRE3025 series the most accurate reference available. For enhanced performance, the VRE3025 has an external trim option for users who want less than 0.375 mV initial error. For ultra low noise applications, an external capacitor can be attached between the noise reduction pin and the ground pin. A ceramic input filter capacitor of 0.1μF is recommended to ensure output stability. SELECTION GUIDE Initial Error (mV) Temp. Coeff. (ppm/°C) Temp Range (°C) Package Options VRE3025BS 0.375 1.0 0°C to +70°C SMT8 (GF) VRE3025BD 0.375 1.0 0°C to +70°C DIP8 (KD) VRE3025JS 0.250 0.6 -40°C to +85°C SMT8 (GF) VRE3025LS 0.500 2.0 -40°C to +85°C SMT8 (GF) Model www.apexanalog.com © Apex Microtechnology Inc. All rights reserved Oct 2017 VRE3025DS Rev P VRE3025 TYPICAL CONNECTION Figure 1: Typical Connection + V IN 2 Optional Noise Reduction Capacitor Input Filter Capacitor CIN 0.1μF 8 + V OUT 6 VRE3025 CN 5 1μF 10 kΩ 4 Optional Fine Trim Adjustment GND PIN DESCRIPTIONS 2 Pin Number Name Description 1, 3, 7 NC No connection. 2 VIN The supply voltage connection. 4 GND Ground. 5 TRIM Optional fine adjustment. Connect to a voltage divider between OUT and GND. 6 OUT 2.5 V output. 8 NR Optional noise reduction. Connect a 1µF capacitor between this pin and GND. VRE3025DS Rev P VRE3025 SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Parameter Symbol Min Max Unit VIN -0.3 +40 V -0.3 +12 V -0.3 +6 V Operating Temp (B) 0 +70 °C Operating Temp (J,L) -40 +85 °C Out Short Circuit to GND Duration (VIN