Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

LTC1605CG Datasheet(PDF) 9 Page - Linear Technology

Part # LTC1605CG
Description  16-Bit, 100ksps, Sampling ADC
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1605CG Datasheet(HTML) 9 Page - Linear Technology

Back Button LTC1605CG Datasheet HTML 5Page - Linear Technology LTC1605CG Datasheet HTML 6Page - Linear Technology LTC1605CG Datasheet HTML 7Page - Linear Technology LTC1605CG Datasheet HTML 8Page - Linear Technology LTC1605CG Datasheet HTML 9Page - Linear Technology LTC1605CG Datasheet HTML 10Page - Linear Technology LTC1605CG Datasheet HTML 11Page - Linear Technology LTC1605CG Datasheet HTML 12Page - Linear Technology LTC1605CG Datasheet HTML 13Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 16 page
background image
9
1605fc
LTC1605
APPLICATIONS INFORMATION
Internal Voltage Reference
The LTC1605 has an on-chip, temperature compensated,
curvature corrected, bandgap reference, which is factory
trimmed to 2.50V. The full-scale range of the ADC is equal
to (
±4 • VREF) or nominally ±10V. The output of the
reference is connected to the input of a unity-gain buffer
through a 4k resistor (see Figure 3). The input to the buffer
or the output of the reference is available at REF (Pin 3).
The internal reference can be overdriven with an external
reference if more accuracy is needed. The buffer output
drives the internal DAC and is available at CAP (Pin 4). The
CAP pin can be used to drive a steady DC load of less than
2mA. Driving an AC load is not recommended because it
can cause the performance of the converter to degrade.
Figure 3. Internal or External Reference Source
S
S
+
1605 • F03
INTERNAL
CAPACITOR
DAC
BANDGAP
REFERENCE
VANA
4k
2.2
µF
CAP
(2.5V)
2.2
µF
REF
(2.5V)
4
3
For minimum code transition noise the REF pin and the
CAP pin should each be decoupled with a capacitor to
filter wideband noise from the reference and the buffer
(2.2
µF tantalum).
Offset and Gain Adjustments
The LTC1605 offset and full-scale errors have been trimmed
at the factory with the external resistors shown in Figure 4.
This allows for external adjustment of offset and full scale
in applications where absolute accuracy is important. See
Figure 5 for the offset and gain trim circuit. First adjust the
offset to zero by adjusting resistor R3. Apply an input
voltage of –152.6mV (– 0.5LSB) and adjust R3 so the code
is changing between 1111 1111 1111 1111 and 0000 0000
0000 0000. The gain error is trimmed by adjusting resistor
R4. An input voltage of 9.999542V (+FS – 1.5LSB) is
applied to VIN and R4 is adjusted until the output code is
changing between 0111 1111 1111 1110 and 0111 1111
1111 1111. Figure 6 shows the bipolar transfer character-
istic of the LTC1605.
Figure 4.
±10V Input Without Trim
+
5
4
3
2
1
2.2
µF
2.2
µF
33.2k
1%
±10V INPUT
200
1%
VIN
AGND1
REF
CAP
AGND2
LTC1605
1605 • F04
Figure 5.
±10V Input with Offset and Gain Trim
INPUT VOLTAGE (V)
0V
–1
LSB
1605 • F06
011...111
011...110
000...001
000...000
100...000
100...001
111...110
1
LSB
BIPOLAR
ZERO
111...111
FS/2 – 1LSB
–FS/2
FS = 20V
1LSB = FS/65536
Figure 6. LTC1605 Bipolar Transfer Characteristics
DC Performance
One way of measuring the transition noise associated with
a high resolution ADC is to use a technique where a DC
+
5
4
3
2
1
2.2
µF
2.2
µF
33.2k
1%
±10V INPUT
200
1%
VIN
AGND1
REF
CAP
AGND2
LTC1605
1605 • F05
576k
R4
50k
R3
50k
5V


Similar Part No. - LTC1605CG

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LTC1605CG LINER-LTC1605CG Datasheet
490Kb / 16P
   16-Bit, 100ksps, Sampling ADC
More results

Similar Description - LTC1605CG

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LTC1605 LINER-LTC1605_15 Datasheet
339Kb / 16P
   16-Bit, 100ksps, Sampling ADC
LTC1605 LINER-LTC1605 Datasheet
490Kb / 16P
   16-Bit, 100ksps, Sampling ADC
LTC1605-2 LINER-LTC1605-2_15 Datasheet
320Kb / 20P
   Single Supply 16-Bit, 100ksps, Sampling ADCs
LTC1605-1 LINER-LTC1605-1 Datasheet
315Kb / 20P
   Single Supply 16-Bit, 100ksps, Sampling ADCs
LTC1605-1 LINER-LTC1605-1_15 Datasheet
320Kb / 20P
   Single Supply 16-Bit, 100ksps, Sampling ADCs
logo
Analog Devices
DC682A AD-DC682A Datasheet
354Kb / 6P
   8-Channel, 16-Bit, 100ksps SoftSpan ADC
AD1876 AD-AD1876 Datasheet
190Kb / 12P
   16-Bit 100 kSPS Sampling ADC
REV. A
AD676 AD-AD676_15 Datasheet
391Kb / 16P
   16-Bit 100 kSPS Sampling ADC
REV. A
AD676 AD-AD676_17 Datasheet
421Kb / 17P
   16-Bit 100 kSPS Sampling ADC
AD1380 AD-AD1380_15 Datasheet
248Kb / 12P
   Low Cost 16-Bit Sampling ADC
REV. D
More results


Html Pages

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


Datasheet Download

Go To PDF Page


Link URL




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

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   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