To give designers of high-speed signal acquisition chains an operational amplifier (op-amp) with unmatched performance at half the power supply voltage, Texas Instruments Inc. has unveiled a 5 V single supply op-amp with lowest distortion. Implemented in the TI's leading-edge BiCom-III complementary bipolar (CB) silicon germanium (SiGe) process, the THS4304 boasts performance that rivals even the best previous generation op-amps operating with twice the power supply voltage. Also, it is the first wideband, voltage feedback unity gain stable op-amp released from TI's BiCom III CB SiGe process, said the manufacturer.

As a result, the op-amp offers very high distortion performance with a second-order harmonic distortion of -85 dBc and a third-order harmonic distortion of -100 dBc at 10 MHz and 2 Vpp output into 100 Ohm load. The THS4304 provides 3 GHz unity gain bandwidth, 830 V/µs slew rate and 2.4-nV/rtHz input noise, all while consuming only 18 mA (or 90 mW) of quiescent current on a 5 V supply. The device's voltage-feedback topology offers designers the advantages of an op-amp with balanced inputs, low offset voltage, low offset current and low offset drift, along with high common-mode and power supply rejection ratio (PSRR).

The low noise and distortion of the THS4304, along with the device's low power supply overhead, maximize its signal-to-noise ratio (SNR) and spurious free dynamic range (SFDR). These factors enable designers to achieve high dynamic range in their systems, allowing for more sensitive wireless systems, better diagnostic capabilities in medical ultrasound units and greater resolution in measurement equipment.

“The THS4304 demonstrates TI's significant advance in technology, which is enabling today's trend toward lower-voltage single-supply operation of high-performance analog circuits,” said Art George, vice president of TI's high-performance linear business. “This allows designers to lower their system power supply, while achieving the performance needed in high-speed signal-acquisition chains.”

Housed in an 8-pin MSOP package, 8-pin SOIC package and space-saving 5-pin SOT-23 package, the suggested price for THS4304 is $1.75 each, in 1,000-unit quantities. THS4304 evaluation modules, SPICE model, technical documentation and samples are available.

For more information, visit www.ti.com/sc04179b.