Product News

Linearin New Product Release: Operational Amplifier - LTA605x

LTA605x series is a single power supply voltage feedback operational amplifier with a small signal bandwidth of 250MHz and a conversion rate performance of 190 V/μ s. Suitable for+3.3V,+5V, and ± 5V power supplies, the input common mode voltage range is extended to Vs --0.1V and Vs+-1V, and the output voltage range is extended to the power rail, with a wide dynamic range, especially in low-voltage applications. LTA605x also offers excellent signal quality with low distortion and fast settling time (13.5 ns to 0.1%), making them an ideal choice for single Sup buffers.

LTA605x Description

Supports ± 5V operation
-3 dB bandwidth reaches 250 MHz (± 5V, G=+1, RL=150 Ω)
Pressure swing rate up to 190V/μ s
0.1% establishment time as fast as 13.5 ns
Input common mode voltage support to negative rail
The output voltage swing range is -4.6 V to+4.2 V (± 5 V power supply)
Output short-circuit current 210mA
Linear output current ± 130 mA
Operating temperature range -40 ° C to+125 ° C

LTA605x Application

Photodiode amplifier
Video buffer
Active filter
Drive A/D converter
Motor phase current detection
Portable devices
Battery powered equipment

Filter

The figure shows a 500 kHz second-order low-pass multi feedback filtering circuit (MFB). The parameters in the figure provide the maximum Pingtan Butterworth response. Roll off at cut-off frequency -40dB/dev. Butterworth response is suitable for applications with ideal and predictable gain characteristics, such as anti aliasing filters used before ADCs

Buffer

A simple method of driving capacitive loads with operational amplifiers is to connect a resistor in series before the load, but this will result in output amplitude loss due to the voltage division between the series resistor and the load. The picture shows an improved method. It can provide AC stability while retaining DC accuracy. RF provides DC accuracy by connecting the inverted signal to the output. CF and RISO offset the loss of phase margin by feeding back the high-frequency component of the output signal to the inverting input of the amplifier, thereby maintaining phase margin throughout the entire feedback loop.

LTA605x Advantages

Fully adopting CMOS technology, the product has high reliability and meets industrial grade requirements; The product features the following points:

It has a wide power supply voltage range and can simultaneously accommodate both low and high voltage usage.
It has track to track output and powerful dynamic driving capability, ensuring large peak to peak output even at fast speeds.
It has a wide input common mode voltage range, ranging from negative rail minus 0.1V to positive rail minus 1V, with true single power supply capability.
Adopting techniques such as local zero point compensation and cross feedforward cascaded code compensation to achieve high bandwidth and high slew rate performance.
Good Differential Gain Error (NTSC) and Differential Gain Error (NTSC) indicators, in line with the standards for generating composite video signals using video application amplifiers.
The use of mid to high frequency PSRR enhancement technology has achieved the effect of enhancing PSRR at mid to low frequencies in operational amplifiers.