Op-amps offer superior accuracy for instrumentation applications

26 July 2006 Analogue, Mixed Signal, LSI

With the expansion of its family of high-precision op-amp integrated circuits, Cirrus Logic has simplified the daunting task of amplifying low-level analog signals within scientific and industrial measurement applications.

The dual-channel CS3004 and CS3014 and single-channel CS3003 and CS3013 ICs deliver high accuracy, while the CS3013 and CS3014 also offer low power consumption. Low power usage is an important feature for new generations of battery-powered portable instruments and personal monitoring applications such as gas safety detectors.

Applications such as temperature/safety monitoring and industrial process controllers require not only minimal errors due to noise, leakage and drift but also extremely high gain to preserve measurement accuracy. According to the manufacturer, the CS300X family fulfils these requirements, with input leakage of only 100 pA and an input offset voltage of only 5 μV (CS3003/CS3013; 10 μV in the CS3004/CS3014) with drift of 0,05 μV/°C. Critical noise errors are limited to 17 nV per root-Hertz in the CS3003 and CS3004 (22 nV per root-Hertz in the CS3013/CS3014), which is held flat above 2 kHz bandwidth.

Accuracy in high-resolution measurement applications is ensured with a high open-loop gain performance of 150 dB in the CS3003/CS3004, while the low-power CS3013/14 provides 135 dB. Operating from single or bipolar power supplies of 2,7 V to 5 V (±1,35 V to ±2,5 V), consumption is an impressive 1000 μA per amplifier in the CS3003/CS3004 and only 500 μA each in the CS3013/CS3014.

In addition to the popular small-outline 8-pin QFN package, these devices will also be available in the new leadless 4 x 4 mm leadless QFN package.

Further reading:

IMU with dual-sensing capability
EBV Electrolink Analogue, Mixed Signal, LSI
ST’s 6-axis inertial measurement unit integrates a dual accelerometer up to 320g and embedded AI for activity tracking and high-impact sensing.

Read more...

---

Plural data converter series
Analogue, Mixed Signal, LSI
Silanna Semiconductor has announced the launch of Plural, a new generation of data converters for customers eager to find a more available, affordable, high-performance alternative to existing brands.

Read more...

---

Precision JFET op-amp
Altron Arrow Analogue, Mixed Signal, LSI
The specifications of the ADA4620 make it optimal as a front-end amplifier in a data-acquisition system, or for a TIA circuit with high input impedance.

Read more...

---

A new era in modular I/O solutions
Rugged Interconnect Technologies Analogue, Mixed Signal, LSI
Aerospace and defence system designers are demanding scalable and high-performance I/O solutions and while traditional mezzanine standards have proven reliable, they often fall short of meeting modern bandwidth, size, and flexibility requirements.

Read more...

---

High voltage instrument op-amp
iCorp Technologies Analogue, Mixed Signal, LSI
The SGM621B is a high accuracy, high voltage instrumentation amplifier, which is designed to set any gain from 1 to 10 000 with one external resistor.

Read more...

---

High-speed SAR ADC simplifies design
Altron Arrow Analogue, Mixed Signal, LSI
The ADI AD4080 simplifies data converter integration by integrating a low drift reference buffer, low dropout regulators and a 16K result data FIFO buffer.

Read more...

---

2-wire quad voltage output DAC
Altron Arrow Analogue, Mixed Signal, LSI
The DAC has a 2-wire serial interface that operates at clock rates up to 400 kHz, and this interface is SMBus compatible, allowing multiple devices to be placed on the same bus.

Read more...

---

Dual-channel ADC for RF applications
RFiber Solutions Analogue, Mixed Signal, LSI
The ARF0471 from Advanced RF is a dual-channel, 14-bit, 3 GSPS ADC, which features an on-chip buffer and sample-and-hold circuit.

Read more...

---

Infineon launches Edge Ai software solution
Altron Arrow Analogue, Mixed Signal, LSI
Infineon has introduced DEEPCRAFT, a new software solution category brand for Edge AI and machine learning, after the company recognised the huge potential of Edge AI for the market.

Read more...

---

16-bit voltage output denseDAC
Altron Arrow Analogue, Mixed Signal, LSI
The AD5766 uses a versatile four-wire serial interface that operates at clock rates of up to 50 MHz for write mode, and is compatible with SPI, QSPI, MICROWIRE, and DSP interface standards.

Read more...

---