Texas Instruments RES21A Resistor Networks
Texas Instruments RES21A Resistor Networks are matched pairs of resistive dividers implemented in a thin-film SiCr high-performance analog CMOS process. These devices have a nominal input resistance of 10kΩ, supporting higher divider voltages than the RES11A, and are available in several nominal ratios. The RES21A networks feature high-ratio matching precision, with the measured ratio of each divider within ±0.05% (±500ppm) of the nominal. These resistor networks are specified to operate within a temperature range of -40°C to 125°C. The RES21A devices are offered in an 8‑pin, SOT‑23-THIN package with a body size of 2.9mm x 1.6mm. These resistor networks are ideal for precision voltage dividers, precision level translation, amplifier gain and attenuation configuration, and pinpoint comparator threshold settings.
Features
- -40°C to 125°C wide temperature range
- Ratio = RIN : RG, RIN = 10kΩ (nominal)
- ±0.05% (maximum) highly precise ratio tolerance
- Low drift ±2ppm/°C TCRratio (maximum)
Applications
- Precision voltage divider, precision level translation
- Amplifier gain and attenuation configuration
- Discrete difference and instrumentation amplifier implementations with high CMRR and gain accuracy
- Accurate gain setting for fully differential amplifiers
- Pinpoint comparator threshold setting
Block Diagram
Performance Graph
Related Thin-Film Resistor Dividers
Texas Instruments RES11A/RES11A-Q1 Thin-Film Resistor Dividers
Automotive devices are available in several nominal ratios to meet a wide array of system needs.