Touchstone Semiconductor Inc.

TS6001 -- 3.5ppm/°C Voltage Reference Demonstration

With Javier Solarzano, Senior Applications Engineer

Touchstone Semiconductor, Inc.

Having an accurate and stable reference output voltage across temperature is essential in a wide variety of applications such as data acquisition systems, sensor, and hand-held applications. An important parameter to consider when selecting a reference voltage device is the output voltage temperature coefficient. In this video, the TS6001A evaluation board and a Type K thermocouple are used to determine the temperature coefficient of the TS6001A 2.5V reference voltage device -- the industry's only 2.5V reference voltage that guarantees less than 10ppm/ºC output voltage drift in a SOT23 package. With a current consumption of only 31µA and an initial output voltage accuracy of less than ±0.08%, the TS6001A is an ideal low power solution where output voltage accuracy and stability is important.

TS1001 Designer's Application Circuit Examples

With Jeroen Fonderie, Vice President of Engineering

Touchstone Semiconductor, Inc.

This video shows three unusual application circuit examples of Touchstone Semiconductor's 0.8V, 600nA operational amplifier, the TS1001. First, the TS1001 is used to build a 1-Hz, 800nA relaxation oscillator. A second example shows how the TS1001, with the help of a logic-level PMOS, is being used as a low-power peak detector and, in the final example, the TS1001 is configured to create a very linear voltage-to-current converter, using just one external resistor. In addition to the single-amplifier TS1001, Touchstone Semiconductor also offers the dual TS1002 and the quad TS1004.

Touchstone Semiconductor, Part 1 – The Beginning

With Brett Fox President and CEO

Touchstone Semiconductor, Inc.

Brett Fox, Touchstone Semiconductor’s President and CEO, talks about Touchstone Semiconductor’s founding, and he talks about the importance of having good investors. Brett also talks about Touchstone’s other co-founders and the founding team.

Current Sense Amplifier Performance Comparison: Touchstone TS1100 versus Maxim MAX9634

With Javier Solorzano, Senior Applications Engineer

Touchstone Semiconductor, Inc.

Overall measurement accuracy in current-sense amplifiers is a function of both gain error and amplifier input offset voltage performance. Of the two error sources, amplifier input offset voltage can impact the design more so than gain error.. If the sense resistor needs to be small to maximize power to the load and to minimize power dissipation; then amplifier input offset voltage becomes the dominant error term. To minimize load current sense error, a current-sense amplifier with a lower input offset voltage is required. By comparing the TS1100 against the MAX9634 side-by-side, the TS1100’s 3-to-1 improvement in amplifier input offset voltage translates into a 2x improvement in current measurement accuracy.

Using the TS1001 Op Amp in Low-Frequency Sensor Applications

With Javier Solorzano, Senior Applications Engineer

Touchstone Semiconducdministrator/index.php?option=com_contenttor, Inc.

The input to any portable/handheld or fixed instrument is a sensor of some type, depending on the physical entity to be monitored. Sensors are available for many physical entities: light, temperature, fluid level, motion, pressure, gas, and force, just to name a few. In the life sciences area, sensors are used to measure heart rate, blood glucose levels, or other physiological entities. Conditioning the output of these sensors as power consumption levels decrease becomes a design engineering challenge, but with a simple analog circuit containing the TS1001 0.8V/0.6µA power op-amp, a low power solution with minimal measurement error is demonstrated.