Datasheet Linear Technology LT1991

Manufacturer	Linear Technology
Series	LT1991

Precision, 100µA Gain Selectable Amplifier

Datasheets

Preview and Download

PDF, 782 Kb, Language: en, File uploaded: Aug 6, 2017, Pages: 28
Precision, 100µA Gain Selectable Amplifier

Extract from the document

Prices

Packaging

	LT1991ACDD#PBF	LT1991ACDD#TRPBF	LT1991ACMS#PBF	LT1991ACMS#TRPBF	LT1991AIDD#PBF	LT1991AIDD#TRPBF	LT1991AIMS#PBF	LT1991AIMS#TRPBF	LT1991CDD#PBF	LT1991CDD#TRPBF	LT1991CMS#PBF	LT1991CMS#TRPBF	LT1991HDD#PBF	LT1991HDD#TRPBF	LT1991HMS#PBF	LT1991HMS#TRPBF	LT1991IDD#PBF	LT1991IDD#TRPBF	LT1991IMS#PBF	LT1991IMS#TRPBF
N	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20
Package	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	MS-10 Package Outline Drawing	MS-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	MS-10 Package Outline Drawing	MS-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	MS-10 Package Outline Drawing	MS-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	MS-10 Package Outline Drawing	MS-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	MS-10 Package Outline Drawing	MS-10 Package Outline Drawing
Package Code	DD	DD	MS	MS	DD	DD	MS	MS	DD	DD	MS	MS	DD	DD	MS	MS	DD	DD	MS	MS
Package Index	05-08-1699	05-08-1699	05-08-1661	05-08-1661	05-08-1699	05-08-1699	05-08-1661	05-08-1661	05-08-1699	05-08-1699	05-08-1661	05-08-1661	05-08-1699	05-08-1699	05-08-1661	05-08-1661	05-08-1699	05-08-1699	05-08-1661	05-08-1661
Pin Count	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10

Parametrics

Parameters / Models	LT1991ACDD#PBF	LT1991ACDD#TRPBF	LT1991ACMS#PBF	LT1991ACMS#TRPBF	LT1991AIDD#PBF	LT1991AIDD#TRPBF	LT1991AIMS#PBF	LT1991AIMS#TRPBF	LT1991CDD#PBF	LT1991CDD#TRPBF	LT1991CMS#PBF	LT1991CMS#TRPBF	LT1991HDD#PBF	LT1991HDD#TRPBF	LT1991HMS#PBF	LT1991HMS#TRPBF	LT1991IDD#PBF	LT1991IDD#TRPBF	LT1991IMS#PBF	LT1991IMS#TRPBF
Common Mode Rejection Ratio, dB	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100
Number of Channels	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Demo Boards	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A	DC819A
Design Tools	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model
Enoise Density, nV/rtHz	46	46	46	46	46	46	46	46	46	46	46	46	46	46	46	46	46	46	46	46
Export Control	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
GBW, MHz	0.56	0.56	0.56	0.56	0.56	0.56	0.56	0.56	0.56	0.56	0.56	0.56	0.56	0.56	0.56	0.56	0.56	0.56	0.56	0.56
Gain Range	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13	1 to 13
Isupply, mA	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1
Operating Temperature Range, °C	0 to 70	0 to 70	0 to 70	0 to 70	-40 to 85	-40 to 85	-40 to 85	-40 to 85	0 to 70	0 to 70	0 to 70	0 to 70	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 85
PSRR, dB	135	135	135	135	135	135	135	135	135	135	135	135	135	135	135	135	135	135	135	135
Rail-to-Rail In	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
Rail-to-Rail Out	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
SR, V/µs	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12
Ts (0.1%), ns	42000	42000	42000	42000	42000	42000	42000	42000	42000	42000	42000	42000	42000	42000	42000	42000	42000	42000	42000	42000
VinCM Low (from V-), V	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1
Voh (from V+), V	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04
Vol (from V-), V	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04
Vos, mV	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015
Vos TC, µV/C	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3
Vs Max, V	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40
Vs Min, V	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4

Eco Plan

	LT1991ACDD#PBF	LT1991ACDD#TRPBF	LT1991ACMS#PBF	LT1991ACMS#TRPBF	LT1991AIDD#PBF	LT1991AIDD#TRPBF	LT1991AIMS#PBF	LT1991AIMS#TRPBF	LT1991CDD#PBF	LT1991CDD#TRPBF	LT1991CMS#PBF	LT1991CMS#TRPBF	LT1991HDD#PBF	LT1991HDD#TRPBF	LT1991HMS#PBF	LT1991HMS#TRPBF	LT1991IDD#PBF	LT1991IDD#TRPBF	LT1991IMS#PBF	LT1991IMS#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Design Notes

Download
Precise Gain Without External Resistors &mdash DN348
PDF, 79 Kb, File published: Sep 5, 2004
Extract from the document
Precise Gain Without External Resistors вЂ“ Design Note 348
Glen Brisebois
Introduction
Inventory and manufacturing have associated costs
and logistical headaches. вЂњIf only we could simplify our
stock room and our manufacturing kits.вЂќ The LTВ®1991
provides so many functions that it may be the last
ampliп¬Ѓer you ever have to stock. This is not a limiteduse single-application difference or instrumentation
ampliп¬Ѓer. This is a п¬‚exible part that can be conп¬Ѓgured
into inverting, noninverting, difference ampliп¬Ѓers, and
even buffered attenuators, just by strapping its pins. It
provides you with internal precisely matched resistors
and feedback capacitors, so you can easily conп¬Ѓgure it
into hundreds of different gain circuits without external
components.
The LT1991 offers the simplicity of using just one
ampliп¬Ѓer for unlimited applicationsвЂ”simply hook it up
for type and gain and move on. The precisely matched
internal resistors, op amp, and feedback capacitor
simplify design, reduce external complexity and test
time, lower pick and place costs, and make for easy
probing. All of this in a small MSOP package.
The Resistors: 0.04% Worst Case …
Download
12-bit DAC in TSOT-23 Includes Bidirectional REF Pin for Connection to Op Amp or External High Precision Reference &mdash DN448
PDF, 87 Kb, File published: Aug 25, 2008
Extract from the document
12-bit DAC in TSOT-23 Includes Bidirectional REF Pin for
Connection to Op Amp or External High Precision Reference
Design Note 448
Kevin Wrenner, Troy Seman and Mark Thoren
Introduction
The LTCВ®2630вЂ™s combination of a 12-bit DAC and low-drift
integrated reference in a tiny SC-70 package has proven
popular for a wide variety of applications. Two new DACs,
the LTC2631 and LTC2640, take this winning formula and
further expand its reach by adding a bidirectional REF pin
and an optional I2C interface in a tiny TSOT-23. The LT1991 precision op amp is a superb choice for
amplifying or attenuating the DAC output to achieve a
desired output range because it requires no precision
external resistors. Its integrated, precision resistors are
matched to 0.04%, allowing gain to be set by simple pin
strapping (see the data sheet for a large variety of gain
options). Figure 1 shows the conп¬Ѓguration for a difference
gain of 4, resulting in a В±5V output with 12-bit programmability under I2C control. Integral nonlinearity, seen in
Figure 2, is better than 1LSB. Like their predecessor, these parts feature 1-bit INL and
DNL, offer excellent load regulation driving up to 10mA
loads, and can operate rail-to-rail. See Table 1 for a list
of options. Figure 3 shows a negative output system using a similar
setup, this time with the LT1991 conп¬Ѓgured as an inverting …

Articles

Download
Versatile Op Amps Need No Resistors &mdash LT Journal
PDF, 339 Kb, File published: Mar 25, 2005
Extract from the document
LINEAR TECHNOLOGY NOVEMBER 2004 IN THIS ISSUEвЂ¦
COVER ARTICLE
Versatile Op Amps
Need No Resistors .1 VOLUME XIV NUMBER 4 Versatile Op Amps
Need No Resistors
by Glen Brisebois and Jon Munson Glen Brisebois and Jon Munson Issue Highlights . 2
LTC in the NewsвЂ¦ . 2
DESIGN FEATURES
30V, Dual Output Regulator
Controller is Efп¬Ѓcient, Rich in
Features, and Saves Space . 5
Teo Yang Long and Theo Phillips Dual Switcher with Spread
Spectrum Reduces EMI . 9
Jason Leonard Superfast Fixed-Gain
Triple Ampliп¬Ѓers Simplify
Hi-Res Video Designs . 12
Jon Munson Power Supply Tracking for
Linear Regulators . 14
Dan Eddleman Tiny, Resistor-Programmable,
ВµPower 0.4V to 18V Voltage
Reference. 16
Dan Serbanescu and Jon Munson Hot Swap for
High Availability Systems . 18 …

Model Line

Series: LT1991 (20)

LT1991ACDD#PBF LT1991ACDD#TRPBF LT1991ACMS#PBF LT1991ACMS#TRPBF LT1991AIDD#PBF LT1991AIDD#TRPBF LT1991AIMS#PBF LT1991AIMS#TRPBF LT1991CDD#PBF LT1991CDD#TRPBF LT1991CMS#PBF LT1991CMS#TRPBF LT1991HDD#PBF LT1991HDD#TRPBF LT1991HMS#PBF LT1991HMS#TRPBF LT1991IDD#PBF LT1991IDD#TRPBF LT1991IMS#PBF LT1991IMS#TRPBF

Manufacturer's Classification

Signal Conditioning > Amplifiers > Operational Amplifiers (Op Amps) > Precision Amplifiers (Vos | Low Power Amplifiers (Is < 1mA/amp) | High Voltage Amplifiers (>12V) | Rail-to-Rail Amplifiers
Signal Conditioning > Amplifiers > Difference Amplifiers
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Amplifiers