Application information

TSV6290, TSV6290A, TSV6291, TSV6291A

14/23

Doc ID 17117 Rev 1

3.5

Optimization of DC and AC parameters

These devices use an innovative approach to reduce the spread of the main DC and AC

parameters. An internal adjustment achieves a very narrow spread of the current

consumption (29 µA typical, min/max at ±17%). Parameters linked to the current

3.6

Driving resistive and capacitive loads

These products are micropower, low-voltage operational amplifiers optimized to drive rather

large resistive loads, above 5 k

Ω. For lower resistive loads, the THD level may significantly

increase.

The amplifiers have a relatively low internal compensation capacitor, making them very fast

while consuming very little. They are ideal when used in a non-inverting configuration or in

an inverting configuration in the following conditions.

●

IGainI

●

Gain

As these operational amplifiers are not unity gain stable, for a low closed-loop gain it is

recommended to use the TSV62x (29 µA, 420 kHz) or TSV63x (60 µA, 880 kHz) which are

unity gain stable.

3.7

PCB layouts

For correct operation, it is advised to add 10 nF decoupling capacitors as close as possible

to the power supply pins.

3.8

Macromodel

An accurate macromodel of the TSV6290 and TSV6291 is available on STMicroelectronics’

web site at www.st.com. This model is a trade-off between accuracy and complexity (that is,

time simulation) of the TSV629x operational amplifiers. It emulates the nominal

performances of a typical device within the specified operating conditions mentioned in the

datasheet. It helps to validate a design approach and to select the right operational

amplifier, but it does not replace on-board measurements.

Table 8.

Related products

Part #

Icc (µA) at 5 V

GBP (MHz)

SR (V/µs)

Minimum gain for

stability

TSV620-1

29

0.42

0.14

1

TSV6290-1

29

1.3

0.5

+11

TSV630-1

60

0.88

0.34

1

TSV6390-1

60

2.4

1.1

+11