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PDF ISL26325 Data sheet ( Hoja de datos )
| Número de pieza | ISL26325 | |
| Descripción | 250kSPS Low-power ADCs | |
| Fabricantes | Intersil | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ISL26325 (archivo pdf) en la parte inferior de esta página. Total 23 Páginas | ||
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12-bit, 250kSPS Low-power ADCs with Single-ended
and Differential Inputs and Multiple Input Channels
ISL26320, ISL26321, ISL26322,
ISL26323, ISL26324, ISL26325,
ISL26329
The ISL26320/21/22/23/24/25/29 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 ISL26320/21/22/23/24/25/29 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 15mW at a sampling rate of 250kSPS,
and an operating current of just 8μA typical between
conversions, when configured for Auto Powerdown mode.
The ISL26320/21/22/23/24/25/29 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 3mA 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
www.DataSheet.net/
June 8, 2012
FN8273.0
FIGURE 1. FUNCTIONAL BLOCK DIAGRAM
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2012. 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
Datasheet pdf - http://www.DataSheet4U.co.kr/
1 page  
ISL26320, ISL26321, ISL26322, ISL26323, ISL26324, ISL26325, ISL26329
Pin Descriptions
PIN NUMBER
PIN NAME ISL26320 ISL26321 ISL26322 ISL26323 ISL26324 ISL26325 ISL26329
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 Inputwww.DataSheet.net/
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
5 FN8273.0
June 8, 2012
Datasheet pdf - http://www.DataSheet4U.co.kr/
5 Page 
ISL26320, ISL26321, ISL26322, ISL26323, ISL26324, ISL26325, ISL26329
Typical Performance Characteristics TA = +25°C, VDD = 5V, VREF = 5V, fSAMPLE = 250kHz, fSCLK = 20MHz,
unless otherwise specified. (Continued)
75
SNR
70
SINAD
65
60
55
100
1k 10k 100k
INPUT FREQUENCY (Hz)
FIGURE 15. SNR AND SINAD vs INPUT FREQUENCY
1M
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
100
1k 10k 100k
INPUT FREQUENCY (Hz)
FIGURE 16. THD vs INPUT FREQUENCY
1M
0
-20
-40
-60
-80
-100
-120
-140
-1600
SNR = 73.6dB
THD = -87.6dB
SINAD = 73.4dB
SFDR = 89.1dB
ENOB = 11.4
25000
50000
75000
FREQUENCY (Hz)
FIGURE 17. SINGLE-TONE FFT
100000
125000
70,000
60,000
50,000
65,536
CODES
40,000
30,000
www.DataSheet.net/
20,000
10,000
0
0
CODES
0
CODES
-3 -2 -1 0 1 2
CODE
FIGURE 18. SHORTED INPUT HISTOGRAM
3
11
FN8273.0
June 8, 2012
Datasheet pdf - http://www.DataSheet4U.co.kr/
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet ISL26325.PDF ] | |
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