Datasheet ADR430, ADR431, ADR433, ADR434, ADR435 (Analog Devices)

Ultralow Noise XFET Voltage References with Current Sink and Source Capability Data Sheet ADR430/ ADR431/ ADR433/ ADR434/ ADR435 FEATURES PIN CONFIGURATIONS Low noise (0.1 Hz to 10.0 Hz): 3.5 µV p-p @ 2.5 V output TP 1 8 TP No external capacitor required V ADR43x IN 2 7 COMP Low temperature coefficient TOP VIEW NIC 3 6 VOUT A Grade: 10 ppm/°C maximum (Not to Scale) GND 4 5 TRIM B Grade: 3 ppm/°C maximum Load regulation: 15 ppm/mA NOTES
001
1. NIC = NO INTERNAL CONNECTION Line regulation: 20 ppm/V 2. TP = TEST PIN (DO NOT CONNECT)
04500-
Wide operating range
Figure 1. 8-Lead MSOP (RM-8)
ADR430: 4. 1 V to 18 V ADR431: 4. 5 V to 18 V TP 1 8 TP ADR433: 5. 0 V to 18 V V ADR43x IN 2 7 COMP ADR434: 6. 1 V to 18 V TOP VIEW NIC 3 6 V (Not to Scale) OUT ADR435: 7. 0 V to 18 V GND 4 5 TRIM High output source and sink current: +30 mA and −20 mA NOTES Wide temperature range: −40°C to +125°C
041
1. NIC = NO INTERNAL CONNECTION 2. TP = TEST PIN (DO NOT CONNECT)
04500-
APPLICATIONS
Figure 2. 8-Lead SOIC_N (R-8)
Precision data acquisition systems High resolution data converters Medical instruments Industrial process control systems Optical control circuits Precision instruments GENERAL DESCRIPTION
The ADR43x series is a family of XFET® voltage references
Table 1. Selection Guide
featuring low noise, high accuracy, and low temperature drift
Temperature
performance. Using Analog Devices, Inc., patented temperature
Output Coefficient
drift curvature correction and XFET (eXtra implanted junction
Model Voltage (V) Accuracy (mV) (ppm/°C)
FET) technology, voltage change vs. temperature nonlinearity in ADR430A 2.048 ±3 10 the ADR43x is minimized. ADR430B 2.048 ±1 3 The XFET references operate at lower current (800 µA) and ADR431A 2.500 ±3 10 lower supply voltage headroom (2 V) than buried Zener ADR431B 2.500 ±1 3 references. Buried Zener references require more than 5 V ADR433A 3.000 ±4 10 headroom for operation. The ADR43x XFET references are ADR433B 3.000 ±1.5 3 the only low noise solutions for 5 V systems. ADR434A 4.096 ±5 10 The ADR43x family has the capability to source up to 30 mA of ADR434B 4.096 ±1.5 3 ADR435A 5.000 ±6 10 output current and sink up to 20 mA. It also comes with a trim terminal to adjust the output voltage over a 0.5% range without ADR435B 5.000 ±2 3 compromising performance. The ADR43x is available in 8-lead MSOP and 8-lead narrow SOIC packages. All versions are specified over the extended industrial temperature range of −40°C to +125°C.
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Document Outline Features Applications Pin Configurations General Description Table of Contents Revision History Specifications ADR430 Electrical Characteristics ADR431 Electrical Characteristics ADR433 Electrical Characteristics ADR434 Electrical Characteristics ADR435 Electrical Characteristics Absolute Maximum Ratings Thermal Resistance ESD Caution Typical Performance Characteristics Theory of Operation Basic Voltage Reference Connections Noise Performance High Frequency Noise Turn-On Time Applications Information Output Adjustment Reference for Converters in Optical Network Control Circuits High Voltage Floating Current Source Kelvin Connection Dual Polarity References Programmable Current Source Programmable DAC Reference Voltage Precision Voltage Reference for Data Converters Precision Boosted Output Regulator Outline Dimensions Ordering Guide