OPA211AI datasheet(14/37 Pages) TI1

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APPLICATION INFORMATION

OPERATING VOLTAGE

IN-

Pre-OutputDriver

OUT

IN+

V-

V+

OPA211

OPA2211

SBOS377G – OCTOBER 2006 – REVISED MAY 2009...................................................................................................................................................... www.ti.com

negative output voltage swing. With the OPA211

The OPA211 and OPA2211 are unity-gain stable,

series, power-supply voltages do not need to be

precision op amps with very low noise. Applications

equal. For example, the positive supply could be set

with noisy or high-impedance power supplies require

+25V

with

the

negative

supply

–5V

decoupling capacitors close to the device pins. In

vice-versa.

most

cases,

0.1

µF capacitors are adequate.

Figure 44 shows a simplified schematic of the

The common-mode voltage must be maintained

OPA211. This die uses a SiGe bipolar process and

within

the

specified

range.

addition,

key

contains 180 transistors.

parameters

are

assured

over

the

specified

temperature

range,

–40°C

+125°C.

Parameters that vary significantly with operating

voltage or temperature are shown in the Typical

OPA211 series op amps operate from ±2.25V to

Characteristics.

±18V

supplies

while

maintaining

excellent

performance. The OPA211 series can operate with as

little as +4.5V between the supplies and with up to

+36V

between

the

supplies.

However,

some

applications

not

require

equal

positive

and

Figure 44. OPA211 Simplified Schematic

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Product Folder Link(s): OPA211 OPA2211

OPA211AI Datasheet(PDF) 14 Page - Texas Instruments

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