Datasheet Linear Technology LT5400B-5 — Ficha de datos

Fabricante	Linear Technology
Serie	LT5400B-5

Red de resistencia cuádruple

Hojas de datos

Vista previa y descarga

PDF, 260 Kb, Idioma: en, Archivo subido: jul 31, 2016, Páginas: 12
Quad Matched Resistor Network

Extracto del documento

Precios

Embalaje

	LT5400BCMS8E-5#PBF	LT5400BCMS8E-5#TRPBF	LT5400BIMS8E-5#PBF	LT5400BIMS8E-5#TRPBF
N	1	2	3	4
Package	MS-8E Dibujo del esquema del paquete	MS-8E Dibujo del esquema del paquete	MS-8E Dibujo del esquema del paquete	MS-8E Dibujo del esquema del paquete
Package Code	MS8E	MS8E	MS8E	MS8E
Package Index	05-08-1662	05-08-1662	05-08-1662	05-08-1662
Pin Count	8	8	8	8

Paramétricos

Parameters / Models	LT5400BCMS8E-5#PBF	LT5400BCMS8E-5#TRPBF	LT5400BIMS8E-5#PBF	LT5400BIMS8E-5#TRPBF
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File
Export Control	no	no	no	no
Long Term Stability, ppm/rtkHr	2	2	2	2
Number of Resistors	4	4	4	4
Operating Temperature Range, °C	0 to 70	0 to 70	-40 to 85	-40 to 85
Resistance, ohms	4 x 1M	4 x 1M	4 x 1M	4 x 1M
Resistor Matching Max, %	0.025	0.025	0.025	0.025
Resistor Matching Tempco, ppm/C	0.2	0.2	0.2	0.2
Vin Max, V	75	75	75	75

Plan ecológico

	LT5400BCMS8E-5#PBF	LT5400BCMS8E-5#TRPBF	LT5400BIMS8E-5#PBF	LT5400BIMS8E-5#TRPBF
RoHS	Obediente	Obediente	Obediente	Obediente

Otras opciones

LT5400 LT5400A-1 LT5400A-2 LT5400A-3 LT5400A-4 LT5400A-5 LT5400B-1 LT5400B-2 LT5400B-3 LT5400B-4 LT5400B-6 LT5400B-7 LT5400B-8

Notas de aplicación

Descargar
Buffered ADC Family Eliminates Signal Conditioning Complexity &mdash AN167
PDF, 1.3 Mb, Archivo publicado: sept 20, 2017
Extracto del documento
Application Note 167
September 2017
Buffered ADC Family Eliminates
Signal Conditioning Complexity
Joe Sousa, Andrew Thomas, Clement Wagner, Mark Thoren
Engineers often assume that analog-to-digital converter
inputs are high impedance. Direct-sampling SAR ADC
inputs will often be high impedance when not converting, but will draw вЂњspikesвЂќ of current at the beginning
of sample acquisition. On average, this behavior can be
modeled as a crude nonlinear resistance that is inversely
proportional to the sample capacitor size and sample rate,
but instantaneously the signal chain must be able to settle
completely in response to this abuse before acquisition
ends and a conversion begins. Coupling a signal chain to an ADC is an art form, often requiring a combination of theory
and experimentation. By contrast, the LTC2358 family of
multi-channel, buffered high voltage SAR ADCs offers
truly high impedance inputs that simplify or eliminate the
need for signal conditioning in many cases. When signal
conditioning is required, it can be directly connected to
the LTC2358 inputs without regard to its ability to drive
a switched capacitor. The following circuits show some
applications that take advantage of the properties of the
LTC2358 inputs. …

Notas de Diseño

Descargar
Precision Matched Resistors Automatically Improve Differential Amplifier CMRR вЂ“ HereвЂ™s How &mdash DN1023
PDF, 184 Kb, Archivo publicado: marzo 21, 2012
Extracto del documento
Precision Matched Resistors Automatically Improve Differential
Amplifier CMRR вЂ“ HereвЂ™s How
Design Note 1023
Kris Lokere, Tyler Hutchison, Greg Zimmer
INTRODUCTION
Matched resistors are critical to the performance of a large class of differential circuits such as the following:
R1 R2 R1 VCC
R3 VA R2 R4 R2
INST
AMP VB 5V 5V + VB VOUT вЂ“ R3 VB вЂ“
OPAMP VA VOUT VA + вЂ“ +
DIFFERENTIAL
AMP VOUT + вЂ“ R1
вЂ“5V R3 dn1023 F02 R4 Instrumentation Amp Difference Amp dn1023 F07 R4 dn1023 F12 Differential Amp Ideally, the resistors in these circuits are chosen such that R1/R2 = R4/R3. Any mismatch between these ratios will contribute
a common mode error. The CMRR (common mode rejection ratio) is an important metric in these circuits, as it indicates how
much of the unwanted common mode signal will appear in the output. The CMRR due to the resistors in these circuits can
be calculated using the following formula:
вЋ› 1вЋћ
вЋњвЋќ вЋџвЋ (G+1)
2
CMRRR _ ONLY в‰€
О”R /R Where CMRRR_ONLY Is CMRR Due Only to the Resistors
(Ideal Ampliп¬Ѓer Case), О”R/R Is the Resistor Matching …
Descargar
Matched Resistor Networks for Precision Amplifier Applications &mdash DN502
PDF, 87 Kb, Archivo publicado: marzo 22, 2012
Extracto del documento
Matched Resistor Networks for Precision Amplifier Applications
Design Note 502
Tyler Hutchison
Introduction
Some ideal op amp conп¬Ѓgurations assume that the
feedback resistors exhibit perfect matching. In practice,
resistor non-idealities can affect various circuit parameters such as common mode rejection ratio (CMRR),
harmonic distortion and stability. For instance, as
shown in Figure 1, a single-ended ampliп¬Ѓer conп¬Ѓgured
to level-shift a ground-referenced signal to a common
mode of 2.5V needs a good CMRR. Assuming 34dB
CMRR and no input signal, this 2.5V level shifter exhibits
an output offset of 50mV, which can even overwhelm
the LSB and offset errors of 12-bit ADCs and drivers.
R
VCC
R +
вЂ“ VIN +
вЂ“ R
2.5V
R
DC вЂ“ + LTC6255 + DN502 F01 вЂ“
VEE Figure 1. A Single-Ended Op Amp Used as a Level Shifter For an op amp, 34dB is a less than ideal CMRR. However, …

Linea modelo

Serie: LT5400B-5 (4)

LT5400BCMS8E-5#PBF LT5400BCMS8E-5#TRPBF LT5400BIMS8E-5#PBF LT5400BIMS8E-5#TRPBF

Clasificación del fabricante

Signal Conditioning > Precision Resistor Network