Overview
The REF195ESZ, produced by Analog Devices Inc., is a 5.0V precision micropower, low dropout, low voltage reference integrated circuit (IC). This device is part of the REF19x series, which utilizes a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors. This design ensures a very low temperature coefficient and high initial accuracy.
The REF195ESZ operates from supplies as low as 100 mV above the output voltage, consuming less than 45 μA of supply current. It also features a sleep mode, where the output is turned off and the supply current is reduced to less than 15 μA by applying a low TTL or CMOS level to the SLEEP pin.
Key Specifications
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Voltage | VO | E Grade, IOUT = 0 mA | 4.998 | 5.0 | 5.002 | V |
| Line Regulation | ΔVO/ΔVIN | E Grade, 5.10 V ≤ VS ≤ 15 V, IOUT = 0 mA | 2 | 4 | ppm/V | |
| Load Regulation | ΔVO/ΔILOAD | E Grade, VS = 5.10 V, 0 mA ≤ IOUT ≤ 30 mA | 2 | 4 | ppm/mA | |
| Dropout Voltage | VS - VO | VS = 5.00 V, ILOAD = 10 mA | 0.50 | V | ||
| Supply Current | ISUPPLY | No load | 45 μA | μA | ||
| Supply Current in Sleep Mode | ISUPPLY | No load | 15 μA | μA | ||
| Temperature Coefficient | TCVO | E Grade, IOUT = 0 mA | 2 | ppm/°C | ||
| Operating Temperature Range | TA | -40°C | +85°C | °C |
Key Features
- Precision micropower operation with low dropout voltage (LDV)
- Stable output voltage from supplies as low as 100 mV above the output voltage
- Low supply current: less than 45 μA, and less than 15 μA in sleep mode
- High initial accuracy and low temperature coefficient due to patented temperature drift curvature correction circuit and laser trimming of thin-film resistors
- Available in 8-lead SOIC, PDIP, and TSSOP packages
- Specified over the extended industrial temperature range (-40°C to +85°C) with typical performance specifications over -40°C to +125°C
Applications
The REF195ESZ is suitable for various applications requiring high precision and low power consumption, including:
- Automotive systems
- Industrial control systems
- Medical devices
- Telecommunications equipment
- Any system requiring a stable and accurate voltage reference with low power consumption
Q & A
- What is the output voltage of the REF195ESZ?
The output voltage of the REF195ESZ is 5.0V with an initial accuracy of ±2 mV for the E grade.
- What is the minimum supply voltage required for the REF195ESZ?
The REF195ESZ can operate from supplies as low as 100 mV above the output voltage.
- How much current does the REF195ESZ consume?
The REF195ESZ consumes less than 45 μA of supply current and less than 15 μA in sleep mode.
- What is the temperature range for the REF195ESZ?
The REF195ESZ is specified over the extended industrial temperature range of -40°C to +85°C.
- What packages are available for the REF195ESZ?
The REF195ESZ is available in 8-lead SOIC, PDIP, and TSSOP packages.
- How does the sleep mode function in the REF195ESZ?
The sleep mode is enabled by applying a low TTL or CMOS level to the SLEEP pin, turning off the output and reducing the supply current to less than 15 μA.
- What is the line regulation of the REF195ESZ?
The line regulation of the REF195ESZ is 2 ppm/V to 4 ppm/V for the E grade.
- What is the load regulation of the REF195ESZ?
The load regulation of the REF195ESZ is 2 ppm/mA to 4 ppm/mA for the E grade.
- What is the dropout voltage of the REF195ESZ?
The dropout voltage of the REF195ESZ is 0.50 V at VS = 5.00 V and ILOAD = 10 mA.
- What are some typical applications for the REF195ESZ?
The REF195ESZ is suitable for automotive systems, industrial control systems, medical devices, telecommunications equipment, and any system requiring a stable and accurate voltage reference with low power consumption.
