Overview
The REF195ES-REEL, produced by Analog Devices Inc., is part of the REF19x series of precision band gap voltage references. These devices utilize a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors to achieve a very low temperature coefficient and high initial accuracy. The REF195ES-REEL is a micropower, low dropout voltage (LDV) device, providing stable output voltage from supplies as low as 100 mV above the output voltage while consuming less than 45 μA of supply current. It also features a sleep mode that reduces the supply current to less than 15 μA when the output is turned off.
Key Specifications
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Initial Accuracy | VO | IOUT = 0 mA | 2.046 | 2.048 | 2.050 | V (E Grade) |
| Line Regulation | ΔVO/ΔVIN | 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA | 2 | 4 | 8 | ppm/V (E, F, G Grades) |
| Load Regulation | ΔVO/ΔILOAD | VS = 5.0 V, 0 mA ≤ IOUT ≤ 25 mA | 10 | 20 | 20 | ppm/mA (G Grade) |
| Dropout Voltage | VS - VO | VS = 3.8 V, ILOAD = 10 mA | 0.80 | 1.10 | V | |
| Supply Current | No load | 45 | μA | |||
| Supply Current in Sleep Mode | No load | 15 | μA | |||
| Operating Temperature Range | TA | -40 | 85 | °C | ||
| Package Type | 8-Lead SOIC_N |
Key Features
- Precision Voltage Reference: High initial accuracy of ±2 mV maximum and low temperature coefficient.
- Micropower Consumption: Low supply current of 45 μA maximum and reduced to 15 μA in sleep mode.
- Low Dropout Voltage: Stable output voltage from supplies as low as 100 mV above the output voltage.
- Temperature Drift Correction: Patented temperature drift curvature correction circuit for stable performance over a wide temperature range.
- Short-Circuit Protection: Built-in protection against short circuits.
- Multiple Package Options: Available in 8-Lead SOIC, PDIP, and TSSOP packages.
Applications
- Portable Instruments: Ideal for battery-powered devices due to low power consumption.
- ADCs and DACs: Used in analog-to-digital and digital-to-analog converters for precise voltage referencing.
- Smart Sensors: Suitable for sensor applications requiring stable and accurate voltage references.
- Solar Powered Applications: Applicable in solar-powered systems where low power consumption is crucial.
- Loop-Current-Powered Instruments: Used in instruments powered by loop currents, such as in industrial automation.
- Automotive Applications: Specified over the extended industrial temperature range, making it suitable for automotive use.
Q & A
- What is the initial accuracy of the REF195ES-REEL?
The initial accuracy of the REF195ES-REEL is ±2 mV maximum.
- What is the supply current of the REF195ES-REEL in normal operation and sleep mode?
The supply current is 45 μA maximum in normal operation and reduced to 15 μA in sleep mode.
- What is the minimum supply voltage required for the REF195ES-REEL to operate?
The device can operate with a supply voltage as low as 100 mV above the output voltage.
- What are the available package types for the REF195ES-REEL?
The REF195ES-REEL is available in 8-Lead SOIC, PDIP, and TSSOP packages.
- What is the operating temperature range of the REF195ES-REEL?
The operating temperature range is from -40°C to +85°C.
- Does the REF195ES-REEL have built-in short-circuit protection?
Yes, the REF195ES-REEL has built-in short-circuit protection).
- What are some typical applications of the REF195ES-REEL?
Typical applications include portable instruments, ADCs and DACs, smart sensors, solar powered applications, and loop-current-powered instruments).
- How does the sleep mode function in the REF195ES-REEL?
The sleep mode is enabled by applying a low TTL or CMOS level to the SLEEP pin, which turns off the output and reduces the supply current to less than 15 μA).
- What is the line regulation of the REF195ES-REEL?
The line regulation is 2 to 8 ppm/V over the specified voltage range).
- What is the load regulation of the REF195ES-REEL?
The load regulation is 10 to 20 ppm/mA over the specified current range).
