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PDF ISL26314 Data sheet ( Hoja de datos )
| Número de pieza | ISL26314 | |
| Descripción | 125kSPS Low-power ADCs | |
| Fabricantes | Intersil | |
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DATASHEET
12-bit, 125kSPS Low-power ADCs with Single-ended
and Differential Inputs and Multiple Input Channels
ISL26310, ISL26311, ISL26312,
ISL26313, ISL26314, ISL26315,
ISL26319
The ISL26310, ISL26311, ISL26312, ISL26313, ISL26314,
ISL26315 and ISL26319 family of sampling SAR-type ADCs feature
excellent linearity over supply and temperature variations, and offer
versions with 1-, 2-, 4- and 8-channel single-ended inputs, and 1-, 2-
and 4-channel differential inputs. A proprietary input multiplexer
and combination buffer amplifier reduces the input drive
requirements, resulting in lower cost and reduced board space.
Specified measurement accuracy is maintained with input signals
up to VDD.
Members of the SL26310, ISL26311, ISL26312, ISL26313,
ISL26314, ISL26315 and ISL26319 family of Low-Power ADCs offer
pinout intercompatibility, differing only in the analog inputs, to
support quick replication of proven layouts across multiple design
platforms.
The serial digital interface is SPI compatible and is easily interfaced
to popular FPGAs and microcontrollers. Power consumption is
limited to 11mW at a sampling rate of 125kSPS, and an operating
current of just 8µA typical between conversions, when configured for
Auto Power-down mode.
The SL26310, ISL26311, ISL26312, ISL26313, ISL26314,
ISL26315, ISL26319 feature up to 5kV Human Body Model ESD
survivability and are available in the popular SOIC and TSSOP
packages. Performance is specified for operation over the full
industrial temperature range (-40°C to +125°C)..
Features
• Pin-compatible family allows easy design upgrades
• Excellent differential non-linearity (0.7LSB max)
• Low THD: -86dB (typ)
• Simple SPI-compatible serial digital interface
• Low 2.2mA operating current
• Power-down current between conversions 8µA (typ)
• +5.25V to +2.7V supply
• Excellent ESD survivability: 5kV HBM, 350V MM, 2kV CDM
Applications
• Industrial process control
• Energy measurement
• Multichannel data acquisition systems
• Pressure sensors
• Flow controllers
VDD
VREF
August 18, 2015
FN7549.3
ANALOG INPUTS
DIFFERENTIAL/
SINGLE-ENDED
1
MUX
BUFFER
ADC
OSC
SPI
POR
CNV
SCLK
SDO
SDI
GND
FIGURE 1. FUNCTIONAL BLOCK DIAGRAM
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2012, 2014, 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL26310, ISL26311, ISL26312, ISL26313, ISL26314, ISL26315,
Pin Descriptions
PIN NUMBER
PIN NAME ISL26310 ISL26311 ISL26312 ISL26313 ISL26314 ISL26315 ISL26319
DESCRIPTION
VDD 1
1
1
1 1 1 1 Positive Supply Voltage
GND 2 2 2, 4 2 2, 4 2, 4 2, 4 Ground
VREF
-
3
3
- 3 3 3 Reference Voltage Input
AIN0+
-
-
5
-5-
- Differential Analog Input, Positive
AIN0-
-
-
6
-6-
- Differential Analog Input, Negative
AIN1+
-
-
7
-7-
- Differential Analog Input, Positive
AIN1-
-
-
8
-8-
- Differential Analog Input, Negative
AIN2+
-
-
-
- 10 -
- Differential Analog Input, Positive
AIN2-
-
-
-
-9-
- Differential Analog Input, Negative
AIN3+
-
-
-
- 12 -
- Differential Analog Input, Positive
AIN3-
-
-
-
- 11 -
- Differential Analog Input, Negative
AIN0
-
4
-
3 - 5 5 Single-Ended Analog Input
AIN1
-
-
-
4 - 7 6 Single-Ended Analog Input
AIN2
-
-
-
- - 10 7 Single-Ended Analog Input
AIN3
-
-
-
- - 12 8 Single-Ended Analog Input
AIN4
-
-
-
- - - 9 Single-Ended Analog Input
AIN5
-
-
-
- - - 10 Single-Ended Analog Input
AIN6
-
-
-
- - - 11 Single-Ended Analog Input
AIN7
-
-
-
- - - 12 Single-Ended Analog Input
SDI 5
5
13
5 13 13 13 Serial Interface Data Input
SDO 6
6
14
6 14 14 14 Serial Interface Data Output
SCLK
7
7
15
7 15 15 15 Serial Interface Clock Input
CNV 8
8
16
8 16 16 16 Conversion Control Input
NC -
- 9, 10, 11, 12 -
- 6, 8, 9, 11 - No Connect
AIN+
3
-
-
- - - - Differential Analog Input, Positive
AIN- 4
-
-
- - - - Differential Analog Input, Negative
Submit Document Feedback
5
FN7549.3
August 18, 2015
5 Page 
ISL26310, ISL26311, ISL26312, ISL26313, ISL26314, ISL26315,
Typical Performance Characteristics
TA = +25°C, VDD = 5V, VREF = 5V, fSAMPLE = 125kHz, fSCLK = 20MHz, unless otherwise specified. (Continued)
75 0
SNR
-10
70
SINAD
-20
-30
-40
65 -50
-60
-70
60
-80
55
100
1k 10k 100k
INPUT FREQUENCY (Hz)
FIGURE 15. SNR AND SINAD vs INPUT FREQUENCY
1M
-90
-100
100
1k 10k 100k
INPUT FREQUENCY (Hz)
FIGURE 16. THD vs INPUT FREQUENCY
1M
0
-20
-40
-60
-80
-100
-120
-140
-160 0
SNR: 72.93dB
SINAD: 72.71dB
THD: -85.84dB
SFDR: 96.16dBc
ENOB: 11.79
10 20 30 40 50
FREQUENCY (kHz)
FIGURE 17. SINGLE-TONE FFT
60 70
70,000
60,000
50,000
65,536
CODES
40,000
30,000
20,000
10,000
0
0
CODES
0
CODES
-3 -2 -1 0 1 2
CODE
FIGURE 18. SHORTED INPUT HISTOGRAM
3
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FN7549.3
August 18, 2015
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet ISL26314.PDF ] | |
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