Overview
The REF200AUE4, produced by Burr-Brown (a division of Texas Instruments), is a dual current source and current sink integrated circuit. This device combines three circuit building-blocks on a single monolithic chip: two 100-µA current sources and a current mirror. The sections are dielectrically isolated, ensuring complete independence and high accuracy at low cost. Each section is individually measured and laser-trimmed to achieve precise performance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Applied Voltage | -6 to 40 | V |
| Reverse Current | -350 | µA |
| Voltage Between Any Two Sections | ±80 | V |
| Operating Temperature | -40 to 85 | °C |
| Storage Temperature | -55 to 150 | °C |
| Current Source Output | 50 µA, 100 µA, 200 µA, 300 µA, 400 µA (pin-strapped) | µA |
| Package Type | SOIC (8-pin) | |
| Package Body Size | 3.91 mm × 4.90 mm | mm |
Key Features
- Dual 100-µA current sources and a current mirror on a single chip.
- Dielectrically isolated sections for complete independence.
- Individually measured and laser-trimmed for high accuracy.
- Current sources can be used as current sinks.
- Pin-strappable for various current outputs (50 µA to 400 µA).
- Low temperature drift, typically 25 ppm/°C from -25°C to +85°C.
- Compliance voltage range up to 40 V.
Applications
- Sensor excitation.
- Biasing circuitry.
- Offsetting current loops.
- Low voltage references.
- Charge-pump circuitry.
- Hybrid microcircuits.
- RTD resistance to voltage conversion.
- Instrumentation amplifiers.
Q & A
- What is the REF200AUE4?
The REF200AUE4 is a dual current source and current sink integrated circuit produced by Burr-Brown (Texas Instruments).
- What are the key components of the REF200AUE4?
The device includes two 100-µA current sources and a current mirror on a single monolithic chip.
- What is the operating temperature range of the REF200AUE4?
The operating temperature range is -40°C to 85°C.
- How can the current output be adjusted?
The current output can be pin-strapped for various currents (50 µA, 100 µA, 200 µA, 300 µA, 400 µA).
- What is the typical temperature drift of the REF200AUE4?
The typical temperature drift is 25 ppm/°C from -25°C to +85°C.
- What package type is the REF200AUE4 available in?
The device is available in an SOIC (8-pin) package.
- What are some common applications of the REF200AUE4?
Common applications include sensor excitation, biasing circuitry, offsetting current loops, low voltage references, charge-pump circuitry, and hybrid microcircuits.
- How do I ensure the best AC performance with the REF200AUE4?
For best AC performance, leave pin 6 open and leave unused sections unconnected.
- What is the compliance voltage range of the REF200AUE4?
The compliance voltage range can be up to 40 V.
- How should the substrate connection be handled?
The substrate connection (pin 6) should be connected to the most negative constant potential in the system for rated DC performance.
