Overview
The REF194GP, produced by Analog Devices Inc., is a precision micropower, low dropout voltage (LDV) reference voltage device. It is part of the REF19x series, which 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.
This device is designed to provide a stable output voltage of 4.5V, with an initial accuracy of ±2 mV maximum. It operates with a low supply current of 45 μA and features a sleep mode that reduces the supply current to less than 15 μA when enabled.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Nominal Output Voltage | - | 4.498 | 4.5 | 4.502 | V |
| Initial Accuracy | IOUT = 0 mA | - | - | ±2 mV | - |
| Temperature Coefficient | IOUT = 0 mA | 2 | - | 5 ppm/°C | - |
| Line Regulation | 4.75 V ≤ VS ≤ 15 V, IOUT = 0 mA | 2 | - | 4 ppm/V | - |
| Load Regulation | VS = 5.8 V, 0 mA ≤ IOUT ≤ 30 mA | 2 | - | 4 ppm/mA | - |
| Dropout Voltage | VS = 5.00 V, ILOAD = 10 mA | - | - | 0.50 V | - |
| Supply Current | No load | - | - | 45 μA | - |
| Supply Current in Sleep Mode | No load | - | - | 15 μA | - |
Key Features
- Precision micropower, low dropout voltage (LDV) reference voltage device.
- High initial accuracy of ±2 mV maximum.
- Low temperature coefficient of 5 ppm/°C maximum.
- Low supply current of 45 μA and sleep mode current of less than 15 μA.
- Stable output voltage from supplies as low as 100 mV above the output voltage.
- High output current capability of up to 30 mA.
- Short-circuit protection.
- Available in 8-lead SOIC package.
Applications
- Portable instruments.
- ADCs and DACs.
- Smart sensors.
- Solar powered applications.
- Loop-current-powered instruments.
- Automotive applications.
Q & A
- What is the nominal output voltage of the REF194GP?
The nominal output voltage of the REF194GP is 4.5V.
- What is the initial accuracy of the REF194GP?
The initial accuracy of the REF194GP is ±2 mV maximum.
- What is the temperature coefficient of the REF194GP?
The temperature coefficient of the REF194GP is 5 ppm/°C maximum.
- How much supply current does the REF194GP consume?
The REF194GP consumes less than 45 μA of supply current and less than 15 μA in sleep mode.
- What is the minimum supply voltage required for the REF194GP to operate?
The REF194GP can operate with supplies as low as 100 mV above the output voltage.
- What is the maximum output current of the REF194GP?
The maximum output current of the REF194GP is up to 30 mA.
- Does the REF194GP have short-circuit protection?
- In what package is the REF194GP available?
The REF194GP is available in an 8-lead SOIC package.
- What are some common applications of the REF194GP?
The REF194GP is commonly used in portable instruments, ADCs and DACs, smart sensors, solar powered applications, loop-current-powered instruments, and automotive applications.
- What is the operating temperature range of the REF194GP?
The REF194GP is specified over the extended industrial temperature range of −40°C to +85°C, with typical performance specifications over −40°C to +125°C.
