Overview
The REF194GS-REEL7 is a precision micropower, low dropout voltage reference IC from Analog Devices Inc. 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. This design ensures a very low temperature coefficient and high initial accuracy. The device is particularly suited for applications requiring stable output voltage with minimal power consumption.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (VO) | E Grade, IOUT = 0 mA | 4.498 | 4.5 | 4.502 | V |
| Output Voltage (VO) | G Grade, IOUT = 0 mA | 4.490 | 4.510 | V | |
| Line Regulation (ΔVO/ΔVIN) | E Grade, 4.75 V ≤ VS ≤ 15 V, IOUT = 0 mA | 2 | 4 | ppm/V | |
| Load Regulation (ΔVO/ΔILOAD) | E Grade, VS = 5.8 V, 0 mA ≤ IOUT ≤ 30 mA | 2 | 4 | ppm/mA | |
| Dropout Voltage (VS - VO) | VS = 5.0 V, ILOAD = 10 mA | 0.50 | V | ||
| Supply Current | No load | 45 μA | μA | ||
| Supply Current in Sleep Mode | No load | 15 μA | μA | ||
| Temperature Coefficient (TCVO) | E Grade, IOUT = 0 mA | 2 | 5 | ppm/°C | |
| Temperature Range | -40°C | +85°C | °C | ||
| Package | 8-Lead SOIC |
Key Features
- Precision micropower operation with a supply current of less than 45 μA and 15 μA in sleep mode.
- Low dropout voltage, allowing stable output voltage from supplies as low as 100 mV above the output voltage.
- High output current capability of up to 30 mA.
- Low temperature coefficient achieved through patented temperature drift curvature correction circuit and laser trimming of thin-film resistors.
- Short-circuit protection and line and load regulation specifications that include the effect of self-heating.
- Extended industrial temperature range of -40°C to +85°C with typical performance specifications up to +125°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-REEL7?
The output voltage of the REF194GS-REEL7 is 4.5V with an initial accuracy of ±2 mV for the E grade and ±20 mV for the G grade.
- What is the maximum supply current of the REF194GS-REEL7?
The maximum supply current is less than 45 μA, and in sleep mode, it is reduced to less than 15 μA.
- What is the temperature coefficient of the REF194GS-REEL7?
The temperature coefficient is 2 ppm/°C for the E grade and 10 ppm/°C for the G grade.
- What is the dropout voltage of the REF194GS-REEL7?
The dropout voltage is 0.50 V at VS = 5.0 V and ILOAD = 10 mA, and up to 1.30 V at VS = 5.8 V and ILOAD = 30 mA.
- What is the line regulation of the REF194GS-REEL7?
The line regulation is 2 ppm/V for the E grade and 4 ppm/V for the G grade over the specified voltage range.
- What is the load regulation of the REF194GS-REEL7?
The load regulation is 2 ppm/mA for the E grade and 4 ppm/mA for the G grade over the specified current range.
- What is the operating temperature range of the REF194GS-REEL7?
The operating temperature range is -40°C to +85°C, with typical performance specifications up to +125°C.
- What package types are available for the REF194GS-REEL7?
The REF194GS-REEL7 is available in an 8-Lead SOIC package.
- Does the REF194GS-REEL7 have short-circuit protection?
Yes, the REF194GS-REEL7 includes short-circuit protection.
- What are some typical applications of the REF194GS-REEL7?
Typical applications include portable instruments, ADCs and DACs, smart sensors, solar powered applications, and automotive systems.
