Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

LTC1419ACG Datasheet(PDF) 11 Page - Linear Technology

Part # LTC1419ACG
Description  14-Bit, 800ksps Sampling A/D Converter with Shutdown
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1419ACG Datasheet(HTML) 11 Page - Linear Technology

Back Button LTC1419ACG Datasheet HTML 7Page - Linear Technology LTC1419ACG Datasheet HTML 8Page - Linear Technology LTC1419ACG Datasheet HTML 9Page - Linear Technology LTC1419ACG Datasheet HTML 10Page - Linear Technology LTC1419ACG Datasheet HTML 11Page - Linear Technology LTC1419ACG Datasheet HTML 12Page - Linear Technology LTC1419ACG Datasheet HTML 13Page - Linear Technology LTC1419ACG Datasheet HTML 14Page - Linear Technology LTC1419ACG Datasheet HTML 15Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 20 page
background image
11
LTC1419
1419fb
many applications. For example, Figure 7 shows a 1000pF
capacitor from + AIN to ground and a 100Ω source resistor
to limit the input bandwidth to 1.6MHz. The 1000pF
capacitor also acts as a charge reservoir for the input
sample-and-hold and isolates the ADC input from sam-
pling glitch sensitive circuitry. High quality capacitors and
resistors should be used since these components can add
distortion. NPO and silver mica type dielectric capacitors
have excellent linearity. Carbon surface mount resistors can
also generate distortion from self heating and from damage
that may occur during soldering. Metal film surface mount
resistors are much less susceptible to both problems.
Input Range
The
±2.5V input range of the LTC1419 is optimized for low
noise and low distortion. Most op amps also perform well
over this same range, allowing direct coupling to the
analog inputs and eliminating the need for special transla-
tion circuitry.
Some applications may require other input ranges. The
LTC1419 differential inputs and reference circuitry can
accommodate other input ranges often with little or no
additional circuitry. The following sections describe the
reference and input circuitry and how they affect the input
range.
Internal Reference
The LTC1419 has an on-chip, temperature compensated,
curvature corrected, bandgap reference that is factory
trimmed to 2.500V. It is connected internally to a reference
amplifier and is available at VREF (Pin 3) see Figure 8a. A
APPLICATIONS INFORMATION
1
2
3
0.1
µF
10
µF
ANALOG
INPUT
1419 F08b
LT1019A-2.5
VOUT
VIN
5V
+AIN
–AIN
VREF
LTC1419
AGND
REFCOMP
5
4
+
Figure 8b. Using the LT1019-2.5 as an External Reference
2k resistor is in series with the output so that it can be
easily overdriven by an external reference or other
circuitry, see Figure 8b. The reference amplifier gains the
voltage at the VREF pin by 1.625 to create the required
internal reference voltage. This provides buffering be-
tween the VREF pin and the high speed capacitive DAC. The
reference amplifier compensation pin (REFCOMP, Pin 4)
must be bypassed with a capacitor to ground. The refer-
ence amplifier is stable with capacitors of 1
µF or greater.
For the best noise performance, a 10
µF ceramic or 10µF
tantalum in parallel with a 0.1
µF ceramic is recommended.
The VREF pin can be driven with a DAC or other means
shown in Figure 9. This is useful in applications where the
peak input signal amplitude may vary. The input span of
the ADC can then be adjusted to match the peak input
signal, maximizing the signal-to-noise ratio. The filtering
of the internal LTC1419 reference amplifier will limit the
bandwidth and settling time of this circuit. A settling time
of 5ms should be allowed for after a reference adjustment.
Figure 8a. LTC1419 Reference Circuit
Figure 9. Driving VREF with a DAC
LTC1419
+AIN
ANALOG INPUT
1.25V TO 3V
DIFFERENTIAL
–AIN
VREF
REFCOMP
AGND
1419 F09
1
2
3
4
5
10
µF
LTC1450
1.25V TO 3V
R2
40k
R3
64k
REFERENCE
AMP
10
µF
REFCOMP
AGND
VREF
R1
2k
BANDGAP
REFERENCE
3
4
5
2.500V
4.0625V
LTC1419
1419 F08a


Similar Part No. - LTC1419ACG

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LTC1419ACG LINER-LTC1419ACG Datasheet
401Kb / 20P
   14-Bit, 800ksps Sampling A/D Converter with Shutdown
More results

Similar Description - LTC1419ACG

ManufacturerPart #DatasheetDescription
logo
Austin Semiconductor
AS1419 AUSTIN-AS1419 Datasheet
1,010Kb / 20P
   14 Bit, 800ksps Sampling A/D Converter with Shutdown
logo
Linear Technology
LTC1419 LINER-LTC1419 Datasheet
401Kb / 20P
   14-Bit, 800ksps Sampling A/D Converter with Shutdown
LTC1419 LINER-LTC1419_15 Datasheet
269Kb / 20P
   14-Bit, 800ksps Sampling A/D Converter with Shutdown
LTC1409 LINER-LTC1409 Datasheet
408Kb / 20P
   12-Bit, 800ksps Sampling A/D Converter with Shutdown
LTC1409 LINER-LTC1409_15 Datasheet
353Kb / 20P
   12-Bit, 800ksps Sampling A/D Converter with Shutdown
LTC1279 LINER-LTC1279 Datasheet
327Kb / 16P
   12-Bit, 600ksps Sampling A/D Converter with Shutdown
LTC1410 LINER-LTC1410 Datasheet
148Kb / 16P
   12-Bit, 1.25Msps Sampling A/D Converter with Shutdown
LTC1278 LINER-LTC1278_15 Datasheet
289Kb / 16P
   12-Bit, 500ksps Sampling A/D Converter with Shutdown
LTC1279 LINER-LTC1279_15 Datasheet
285Kb / 16P
   12-Bit, 600ksps Sampling A/D Converter with Shutdown
LTC1278 LINER-LTC1278 Datasheet
329Kb / 16P
   12-Bit, 500ksps Sampling A/D Converter with Shutdown
More results


Html Pages

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


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com