LT1996ACMS datasheet(8/24 Pages) LINER

8 / 24 page

LT1996

1996f

Introduction

The LT1996 may be the last op amp you ever have to stock.

Because it provides you with several precision matched

resistors, you can easily configure it into several different

classical gain circuits without adding external compo-

nents. The several pages of simple circuits in this data

sheet demonstrate just how easy the LT1996 is to use. It

can be configured into difference amplifiers, as well as into

inverting and noninverting single ended amplifiers. The

fact that the resistors and op amp are provided together in

such a small package will often save you board space and

reduce complexity for easy probing.

The Op Amp

The op amp internal to the LT1996 is a precision device

with 15µV typical offset voltage and 3nA input bias cur-

rent. The input offset current is extremely low, so match-

ing the source resistance seen by the op amp inputs will

provide for the best output accuracy. The op amp inputs

are not rail-to-rail, but extend to within 1.2V of VCC and 1V

of VEE. For many configurations though, the chip inputs

will function rail-to-rail because of effective attenuation to

the +input. The output is truly rail-to-rail, getting to within

40mV of the supply rails. The gain bandwidth product of

the op amp is about 560kHz. In noise gains of 2 or more,

it is stable into capacitive loads up to 500pF. In noise gains

below 2, it is stable into capacitive loads up to 100pF.

The Resistors

The resistors internal to the LT1996 are very well matched

SiChrome based elements protected with barrier metal.

Although their absolute tolerance is fairly poor (±30%),

their matching is to within 0.05%. This allows the chip to

achieve a CMRR of 80dB, and gain errors within 0.05%.

The resistor values are (450k/9), (450k/27), (450k/81)

and 450k, connected to each of the inputs. The resistors

have power limitations of 1watt for the 450k and (450k/81)

resistors, 0.3watt for the (450k/27) resistors and 0.5watt

for the (450k/9) resistors; however, in practice, power

dissipation will be limited well below these values by the

BLOCK DIAGRA

LT1996

1996 BD

M27

M81

P27

P81

VCC

VEE

OUT

REF

450k/81

450k/27

450k/9

450k

4pF

450k

450k/81

4pF

–

OUT

APPLICATIO S I FOR ATIO

LT1996ACMS bảng dữ liệu(PDF) 8 Page - Linear Technology

LT1996ACMS bảng dữ liệu(HTML) 8 Page - Linear Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

bảng dữ liệu tải về

Link URL