Overview
The REF195GPZ is a precision micropower, low dropout voltage reference from Analog Devices Inc. This three-terminal voltage reference is designed to provide a precise and stable output voltage. The REF19x series, which includes the REF195GPZ, utilizes 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. These devices are suitable for applications requiring low power consumption and high stability over a wide temperature range.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage | - | - | 5.0 | - | V |
| Initial Accuracy | - | - | ±2 | - | mV |
| Supply Current (No Load) | - | - | 45 | - | μA |
| Supply Current (Sleep Mode) | - | - | 15 | - | μA |
| Line Regulation | 3.3 V ≤ VS ≤ 15 V, IOUT = 0 mA | - | - | 20 | ppm/V |
| Load Regulation | VS = 5.0 V, 0 mA ≤ IOUT ≤ 25 mA | - | - | 20 | ppm/mA |
| Dropout Voltage | VS = 3.8 V, ILOAD = 10 mA | - | - | 0.80 | V |
| Temperature Range | - | -40 | - | 85 | °C |
| Package Type | - | - | - | 8-Lead PDIP | - |
Key Features
- Precision Output Voltage: The REF195GPZ provides a precise output voltage of 5.0V with high initial accuracy of ±2 mV.
- Low Power Consumption: The device consumes less than 45 μA of supply current and reduces to less than 15 μA in sleep mode.
- Low Dropout Voltage: It operates with a stable output voltage from supplies as low as 100 mV above the output voltage.
- Temperature Stability: The device features a very low temperature coefficient achieved through patented temperature drift curvature correction and laser trimming of thin-film resistors.
- Extended Temperature Range: Specified over the extended industrial temperature range of −40°C to +85°C, with typical performance specifications up to +125°C.
- Short-Circuit Protection: Includes short-circuit protection for enhanced reliability.
Applications
- Portable Instruments: Ideal for battery-powered devices due to its low power consumption.
- ADCs and DACs: Used in analog-to-digital and digital-to-analog converters for precise voltage referencing.
- Smart Sensors: Suitable for smart 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 control systems.
- Automotive Applications: Can be used in automotive systems due to its extended temperature range and high reliability.
Q & A
- What is the output voltage of the REF195GPZ?
The output voltage of the REF195GPZ is 5.0V.
- What is the initial accuracy of the REF195GPZ?
The initial accuracy of the REF195GPZ is ±2 mV.
- How much supply current does the REF195GPZ consume?
The REF195GPZ consumes less than 45 μA of supply current and reduces to less than 15 μA in sleep mode.
- What is the temperature range for the REF195GPZ?
The REF195GPZ is specified over the extended industrial temperature range of −40°C to +85°C, with typical performance specifications up to +125°C.
- What package types are available for the REF195GPZ?
The REF195GPZ is available in an 8-Lead PDIP package.
- Does the REF195GPZ have short-circuit protection?
Yes, the REF195GPZ includes short-circuit protection.
- What are some typical applications for the REF195GPZ?
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 REF195GPZ?
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 dropout voltage for the REF195GPZ?
The dropout voltage for the REF195GPZ is 0.80 V at VS = 3.8 V and ILOAD = 10 mA.
- Is the REF195GPZ suitable for automotive applications?
Yes, the REF195GPZ is suitable for automotive applications due to its extended temperature range and high reliability.
