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Tuesday, February 06, 2018

Smallest amplifiers for high performance in challenging system designs

By Nick Flaherty www.flaherty.co.uk




Texas Instruments (TI) has launched the industry’s smallest operational amplifier (op amp) and low-power comparators at 0.64 mm2

Packaging is the key factor for such devicesm and the new X2SON package for the TLV9061 op amp and TLV7011 family of comparators enable engineers to reduce their system size and cost, while maintaining high performance in a variety of Internet of Things (IoT), personal electronics and industrial applications, including mobile phones, wearables, optical modules, motor drives, smart grid and battery-powered systems. 

With a high gain bandwidth (GBW) of 10 MHz, fast slew rate at 6.5 V/µs and low-noise spectral density of 10 nV/√Hz, the TLV9061 op amp is designed for use in wide-bandwidth, high-performance systems. The TLV7011 family of nanopower comparators delivers a faster response time with propagation delays down to 260 ns, while consuming 50 percent less power than competitive comparators. Additionally, both devices support rail-to-rail inputs with low-voltage operation down to 1.8 V, enabling ease-of-use in battery-powered applications.

The TLV9061 op amp also features integrated EMI filtering inputs. This helps provide resilient performance for systems prone to RF noise, while significantly reducing the need for external discrete circuitry. Half the offset drift and typical input bias across a full temperature range, -40 to 125॰C  creates a more precise signal chain solution compared to other small devices.

There is no phase reversal and integrated internal hysteresis for overdriven inputs in the TLV7011 comparator family to increase design flexibility and reduce the need for external components. It has current consumption as low as 335 nA and fast propagation delay down to 260 ns for to enable low-power systems to monitor signals and respond quickly.

Designers can download the TINA-TI SPICE model to simulate their designs and predict circuit behavior when using the TLV9061 op amp and TLV7011 family of comparators. Engineers can start small brushed DC servo drive designs using the TLV9061 op amp with the 10.8-V/15-W, >90% Efficiency, 2.4-cm2, Power Stage Reference Design. Also, they can quickly and easily evaluate the TLV7011 comparators with the DIP adapter evaluation module, available today for US$5.00 from the TI store and authorized distributors.

Preproduction samples of the TLV9061 op amp and volume quantities of the TLV7011 family of comparators are now available through the TI store and authorized distributors in a 5-pin extra small outline no-lead (X2SON) package, measuring 0.8 mm x 0.8 mm x 0.4 mm. Pricing starts at US$0.19 and US$0.25 in 1,000-unit quantities, respectively. 

Product
Supply voltage (Vcc)
DC input offset (Vios)
Propagation delay (tpd)
Supply current (Icc)
1.6 – 5.5 V
0.5 mV
260 ns
5 µA
1.6 – 5.5 V
0.5 mV
260 ns
5 µA
1.6 – 6.5 V
0.1 mV
3 µs
335 nA
1.6 – 6.5 V
0.1 mV
3 µs
335 nA

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