ADR3625_V01 AD | Alldatasheet

Document overview

  • Manufacturer or author: Analog Devices, Inc.
  • PDF pages: 26

Technical content

Precision, Micropower, High Current Output Voltage References Rev. A DOCUMENT FEEDBACK TECHNICAL SUPPORT Information furnished by Analog Devices is believed to be accurate and reliable "as is". 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.

FEATURES

►Maximum temperature coefficient ►3 ppm/°C (B grade) ►6 ppm/°C (A grade) ►Output current capacity (typical): 70 mA sourcing and 20 mA sinking ►Low quiescent current: 65 µA ►Low shutdown current: 1.5 μA ►Output voltage noise (0.1 Hz to 10 Hz): 3 ppm p-p ►Maximum initial output voltage error ►±0.04% (B grade) ►±0.08% (A grade) ►Operating temperature range: −40°C to +125°C ►Maximum input voltage: 16 V ►Low dropout voltage ►0.25 V for the ADR3625 ►0.15 V for the ADR3630 and ADR3650 ►1.8 V logic compatible ►8-Lead MSOP package

APPLICATIONS

►Precision power supplies ►Portable instrumentation ►Process transmitters ►Remote sensors ►Medical instrumentation ►Auto battery monitors PIN CONFIGURATION Figure 1. 8-Lead MSOP Pin Configuration exceptional replacement to standard low dropout (LDO) regulators. minimum load capacitance of 0.1 μF is required for operation. +125°C operating temperature range. Table 1. Voltage Reference Choices from Analog Devices

Data Sheet ADR3625/ADR3630/ADR3650 TABLE OF CONTENTS analog.com Rev. A | 2 of 26

REVISION HISTORY

4/2023—Rev. 0 to Rev. A

Data Sheet ADR3625/ADR3630/ADR3650 TABLE OF CONTENTS analog.com Rev. A | 3 of 26 10/2022—Revision 0: Initial Version

Data Sheet ADR3625/ADR3630/ADR3650 SPECIFICATIONS analog.com Rev. A | 4 of 26

ELECTRICAL CHARACTERISTICS

Input voltage (VIN) = 3 V to 16 V, output current capacity (IL) = 0 mA, load capacitance (CL) = 1 μF, ENABLE voltage (VEN) = VIN, and –40°C ≤ TA ≤ +125°C, unless otherwise noted. Table 2. Electrical Characteristics

0.1 Hz to 10 Hz 3 ppm p-p

Table 2. Electrical Characteristics (Continued)

10 Hz to 1 kHz 4 ppm RMS

2 VDO is the maximum dropout voltage with a 10 mA sourcing load current. 3 VDO is the maximum dropout voltage with a 50 mA sourcing load current.

Table 3. Absolute Maximum Ratings ing conditions for extended periods may affect product reliability. junction-to-case thermal resistance. Table 4. Thermal Resistance sitive devices in an ESD protected area only. Human body model (HBM) per ANSI/ESDA/JEDEC JS-001. Table 5. ADR3625\\ADR3630\\ADR3650, 8-Lead MSOP damage may occur on devices subjected to high energy ESD. performance degradation or loss of functionality.

Figure 2. Pin Configuration Table 6. Pin Function Descriptions 1 ENABLE Enable Connection. The ENABLE pin enables or disables the device. 2 VIN Input Voltage Connection. 4 GND SENSE GND Sensing Connection. Connect GND SENSE directly to the GND connection of the load device. 6 VOUT FORCE Reference Voltage Output. 7 VOUT SENSE Reference Voltage Output Sensing Connection. Connect VOUT SENSE directly to the voltage input of the load device.

Data Sheet ADR3625/ADR3630/ADR3650 TERMINOLOGY analog.com Rev. A | 18 of 26 Dropout Voltage Dropout voltage (VDO), sometimes referred to as supply voltage headroom or supply output voltage differential, is defined as the minimum voltage differential between the input and output such that the output voltage is maintained to within 0.1% accuracy. VDO = (VIN – VOUT)MIN Because VDO depends on the current passing through the device, it is always specified for a given load current. In series mode devices, the dropout voltage typically increases proportionally to the load current (see Figure 8 and Figure 9). Line Regulation Line regulation refers to the change in output voltage in response to a given change in input voltage and is expressed in percent per volt, ppm per volt, or μV per volt change in input voltage. Load Regulation Load regulation refers to the change in output voltage in response to a given change in load current and is expressed in μV per mA, ppm per mA, or Ω of dc output resistance. Solder Heat Resistance Shift Solder heat resistance shift refers to the permanent shift in output voltage that is induced by exposure to reflow soldering and is ex- pressed as a percentage of the output voltage. This shift is caused by changes in the stress exhibited on the die by the package materials when these materials are exposed to high temperatures. This effect is more pronounced in lead-free soldering processes due to higher reflow temperatures. Solder heat resistance is calcu- lated after three solder reflow cycles to simulate the worst case conditions when assembling a two-sided PCB with surface-mount components with one additional rework cycle. The reflow cycles use the JEDEC standard reflow temperature profile. Temperature Coefficient The temperature coefficient (TCVOUT) relates the change in the output voltage to the change in the ambient temperature of the device, as normalized by the output voltage at 25°C. The TCVOUT for the ADR3625\\ADR3630\\ADR3650 is fully tested over three temperatures: –40°C, +25°C, and +125°C. Box Method The box method is represented by the following equation: TC V OU T = max V OU T T 1 , T 2 , T 3 − mi n V OU T T 1 , T 2 , T 3 V O U T T 2 × T 3 − T 1 × 10 6 where: TCVOUT is expressed in ppm/°C. VOUT(Tx) is the output voltage at temperature Tx. T1 = –40°C. T2 = +25°C. T3 = +125°C. This box method ensures that TCVOUT accurately portrays the maximum difference between any of the three temperatures at which the output voltage of the device is measured. Thermal Hysteresis Thermal hysteresis (ΔVOUT_HYS) represents the change in the out- put voltage after the device is exposed to a specified temperature cycle. ΔVOUT_HYS is expressed as a difference in ppm from the nominal output. Δ V OU T _ HY S = V O U T 1 _ 25° C − V OU T 2 _ 25° C V O U T 1 _ 25° C × 10 6 ppm where: VOUT1_25°C is the output voltage at 25°C. VOUT2_25°C is the output voltage after temperature cycling. Long-Term Drift Long-term drift (ΔVOUT_LTD) refers to the shift in the output voltage vs. time. This is expressed as a difference in ppm from the nominal output. ΔV OU T _ L TD = V OU T t 1 − V OU T t 0 V OU T t 0 × 10 6 ppm where: VOUT(t0) is the VOUT at the starting time of the measurement. VOUT(t1) is the VOUT at the end time of the measurement.

registered trademarks are the property of their respective owners. One Analog Way, Wilmington, MA 01887-2356, U.S.A. Figure 81. 8-Lead Mini Small Outline Package [MSOP] Table 7. Evaluation Boards