Overview
The REF194GS-REEL is a precision micropower, low dropout voltage reference from Analog Devices Inc. This component 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 REF194GS-REEL is designed to provide stable output voltage 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 that reduces the supply current to less than 15 μA when enabled by a low TTL or CMOS level on the SLEEP pin.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage | - | - | 4.5 | - | V |
| Supply Current | No Load | - | 45 | - | μA |
| Supply Current in Sleep Mode | No Load | - | 15 | - | μA |
| Temperature Coefficient (TCVO) | IOUT = 0 mA, G Grade | 10 | 25 | - | ppm/°C |
| Line Regulation | 3.3 V ≤ VS ≤ 15 V, IOUT = 0 mA, G Grade | 10 | 20 | - | ppm/V |
| Load Regulation | VS = 5.0 V, 0 mA ≤ IOUT ≤ 25 mA, G Grade | 10 | 20 | - | ppm/mA |
| Dropout Voltage | VS = 3.8 V, ILOAD = 10 mA | - | - | 0.80 | V |
| Operating Temperature Range | - | -40 | - | 85 | °C |
| Package Type | - | - | - | 8-Lead SOIC | - |
Key Features
- Precision micropower, low dropout voltage reference.
- High initial accuracy: ±2 mV maximum.
- Low supply current: 45 μA maximum, and 15 μA in sleep mode.
- Low temperature coefficient: 10 to 25 ppm/°C for G Grade.
- Line and load regulation: 10 to 20 ppm/V and 10 to 20 ppm/mA respectively for G Grade.
- Short-circuit protection.
- Extended industrial temperature range: −40°C to +85°C.
Applications
- Portable instruments.
- ADCs and DACs.
- Smart sensors.
- Solar powered applications.
- Loop-current-powered instruments.
- Automotive applications.
Q & A
- What is the output voltage of the REF194GS-REEL?
The output voltage of the REF194GS-REEL is 4.5 V. - What is the maximum supply current of the REF194GS-REEL?
The maximum supply current is 45 μA. - How much current does the REF194GS-REEL consume in sleep mode?
In sleep mode, the supply current is reduced to less than 15 μA. - What is the temperature coefficient of the REF194GS-REEL?
The temperature coefficient (TCVO) for the G Grade is 10 to 25 ppm/°C. - What is the line regulation of the REF194GS-REEL?
The line regulation for the G Grade is 10 to 20 ppm/V. - What is the load regulation of the REF194GS-REEL?
The load regulation for the G Grade is 10 to 20 ppm/mA. - What is the dropout voltage of the REF194GS-REEL?
The dropout voltage is 0.80 V at VS = 3.8 V and ILOAD = 10 mA. - What is the operating temperature range of the REF194GS-REEL?
The operating temperature range is −40°C to +85°C. - In what package type is the REF194GS-REEL available?
The REF194GS-REEL is available in an 8-Lead SOIC package. - What are some typical applications of the REF194GS-REEL?
Typical applications include portable instruments, ADCs and DACs, smart sensors, solar powered applications, and automotive applications.
