272BC IC Description: –
The TLC272 and TLC277 precision dual operational amplifiers combine a wide range of input offset voltage grades with low offset voltage drift, high input impedance, low noise, and speeds approaching those of general-purpose BiFET devices.
These devices use Texas Instruments silicon gate Linc MOS technology, which provides offset voltage stability far exceeding the stability available with conventional metal-gate processes. The extremely high input impedance, low bias currents, and high slew rates make these cost-effective devices ideal for applications previously reserved for BiFET and NFET products. Four offset voltage grades are available (C-suffix and I-suffix types), ranging from the low-cost TLC272 (10 mV) to the high-precision TLC277 (500 µV).
These advantages, in combination with good common-mode rejection and supply voltage rejection, make these devices a good choice for new state-of-the-art designs as well as for upgrading existing designs.
- Trimmed Offset Voltage: TLC277 . . . 500 µV Max at 25°C, VDD = 5 V
- Input Offset Voltage Drift …Typically 0.1 µV/Month, Including the First 30 Days
- Wide Range of Supply Voltages Over Specified Temperature Range: 0°C to 70°C . . . 3 V to 16 V
–40°C to 85°C . . . 4 V to 16 V
–55°C to 125°C . . . 4 V to 16 V
- Single-Supply Operation
- Low Noise …Typically 25 nV/√Hz at f = 1 kHz
- Output Voltage Range Includes Negative Rail
- High Input impedance . . . 1012 Ω Typ
In general, many features associated with bipolar technology are available on LinCMOS operational amplifiers
without the power penalties of bipolar technology. General applications such as transducer interfacing, analog
calculations, amplifier blocks, active filters, and signal buffering are easily designed with the TLC272 and
TLC277. The devices also exhibit low voltage single-supply operation, making them ideally suited for remote
and inaccessible battery-powered applications. The common-mode input voltage range includes the negative