ISL26712 Intersil, ISL26712 Datasheet

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ISL26712

Manufacturer Part Number
ISL26712
Description
(ISL26708 - ISL26712) 1MSPS SAR ADCs
Manufacturer
Intersil
Datasheet
12-Bit, 10-Bit and 8-Bit, 1MSPS SAR ADCs
ISL26712, ISL26710, ISL26708
The ISL26712, ISL26710, ISL26708 are 12-bit, 10-bit and 8-bit,
1MSPS sampling SAR-type ADCs featuring excellent linearity over
supply and temperature variations. The robust, fully-differential
input offers high impedance to minimize errors due to leakage
currents, and the specified measurement accuracy is maintained
with input signals up to the supply rails.
The reference accepts inputs from 0.1V to 2.2V for 3V operation
and 0.1V to 3.5V for 5V operation, providing design flexibility in a
wide variety of applications. The ISL26712/10/08 also features
up to 8kV Human Body Model ESD survivability.
The serial digital interface is SPI compatible and is easily
interfaced to popular FPGAs and microcontrollers. Power
dissipation is 8.5mW at a sampling rate of 1MSPS, and just 5µW
between conversions utilizing Auto Power-Down mode (with a 5V
supply), making the ISL26712/10/08 excellent solutions for
remote industrial sensors and battery-powered instruments.
The ISL26712/10/08 are available in an 8 Ld TDFN or an SOT-23
package, and are specified for operation over the Industrial
temperature range (–40°C to +85°C).
March 14, 2012
FN7999.0
AIN+
AIN–
VREF
VREF
FIGURE 1. BLOCK DIAGRAM
VDD
GND
1
LOGIC
SAR
INTERFACE
SERIAL
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
SCLK
SDATA
CS
1-888-INTERSIL or 1-888-468-3774
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
Features
• Differential Input
• Simple SPI-compatible Serial Digital Interface
• Guaranteed No Missing Codes
• 1MHz Sampling Rate
• 3V or 5V Operation
• Low Operating Current
• Power-down Current between Conversions: 1µA
• Excellent Differential Non-Linearity
• Low THD: -83dB (typ)
• Pb-Free (RoHS Compliant)
• Available in TDFN Package (3x3mm)
• Available in SOT-23 Package
Applications
• Remote Data Acquisition
• Battery Operated Systems
• Industrial Process Control
• Energy Measurement
• Data Acquisition Systems
• Pressure Sensors
• Flow Controllers
www.DataSheet.co.kr
- 1.25mA at 1MSPS with 3V Supplies
- 1.70mA at 1MSPS with 5V Supplies
FIGURE 2. ISL26712 DIFFERENTIAL LINEARITY ERROR vs CODE
-0.2
-0.4
-0.6
-0.8
-1.0
1.0
0.8
0.6
0.4
0.2
0.0
All other trademarks mentioned are the property of their respective owners.
0
|
1024
Copyright Intersil Americas Inc. 2012. All Rights Reserved
CODE
2048
3072
4096
Datasheet pdf - http://www.DataSheet4U.net/

Related parts for ISL26712

ISL26712 Summary of contents

Page 1

... Auto Power-Down mode (with a 5V supply), making the ISL26712/10/08 excellent solutions for remote industrial sensors and battery-powered instruments. The ISL26712/10/08 are available TDFN or an SOT-23 package, and are specified for operation over the Industrial temperature range (–40°C to +85°C). ...

Page 2

... ISL26712, ISL26710, ISL26708 Typical Connection Diagram VREF REF P-P REF P-P Pin Configurations ISL26712/10/ TDFN) TOP VIEW VREF 1 8 AIN AIN GND 4 5 ISL26712/10/ SOT-23) TOP VIEW SCLK 2 7 SDATA VREF VDD AIN+ SCLK AIN– ...

Page 3

... ISL26708IRTZ (Note 3) 6708 ISL26708IRTZ-T (Notes 1, 3) 6708 Coming Soon 6712 (Note 5) ISL26712IHZ-T (Notes 1, 2) Coming Soon 6712 (Note 5) ISL26712IHZ-T7A (Notes 1, 2) Coming Soon 6710 (Note 5) ISL26710IHZ-T (Notes 1, 2) Coming Soon 6710 (Note 5) ISL26710IHZ-T7A (Notes 1, 2) Coming Soon 6708 (Note 5) ISL26708IHZ-T (Notes 1, 2) ...

Page 4

... ISL26712, ISL26710, ISL26708 Table of Contents Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Thermal Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Timing Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 ADC Transfer Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Analog Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Voltage Reference Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Converter Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Short Cycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Power-on Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 ACQUISITION TIME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Power vs Throughput Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Serial Digital Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Data Format ...

Page 5

... ISL26712, ISL26710, ISL26708 Absolute Maximum Ratings Any Pin to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.0V Analog Input to GND -0. Digital I/O to GND -0. Digital Input Voltage to GND . . . . . . . . . . . . . . . . . . . . . . -0. Maximum Current In to Any Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA ESD Rating Human Body Model (Tested per JESD22-A114F 8kV Machine Model (Tested per JESD22-A115B 400V Charged Device Model (Tested per JESD22-C101E) TDFN Package ...

Page 6

... ISL26712, ISL26710, ISL26708 Electrical Specifications 1MSPS 2.5V unless otherwise noted. Typical values are REF CM REF range, -40°C to +85°C. (Continued) SYMBOL PARAMETER TEST CONDITIONS GAIN Positive Gain Error ± REF input range Negative Gain Error ANALOG INPUT (Note 11) ...

Page 7

... ISL26712, ISL26710, ISL26708 Electrical Specifications 1MSPS 2.5V unless otherwise noted. Typical values are REF CM REF range, -40°C to +85°C. (Continued) SYMBOL PARAMETER TEST CONDITIONS I Positive Supply Input Current DD Static Dynamic 3V 5V Power Dissipation Static Mode Dynamic ...

Page 8

... ISL26712, ISL26710, ISL26708 t t CSS CDV CLKDV 12 BIT SDATA D11 D10 10 BIT SDATA BIT SDATA FIGURE 3. SERIAL INTERFACE TIMING DIAGRAM OUTPUT PIN FIGURE 4. EQUIVALENT LOAD CIRCUIT 8 CONV ...

Page 9

... FIGURE 8. TYPICAL DNL FOR THE ISL26712 FOR VDD = 5V 1.0 0.8 0.6 0.4 0.2 0.0 -0.2 -0.4 -0.6 -0.8 -1.0 700 800 900 1000 0 FIGURE 10. TYPICAL INL FOR THE ISL26712 FOR VDD = 5V 8192-POINT FFT f = 1MSPS SAMPLE f = 95.2kHz IN SINAD = 72.0dB THD = -91dB SFDR = 93dB 100 200 300 400 FREQUENCY (kHz) 1024 2048 3072 ...

Page 10

... V (V) REF FIGURE 15. CHANGE IN INL vs VREF FOR THE ISL26712 FOR VDD = 5V 10 (Continued) 2.5 2.0 1.5 1.0 0.5 0.0 -0.5 -1.0 -1.5 -2.0 2.5 3.0 3.5 0.0 FIGURE 12. CHANGE IN INL vs VREF FOR THE ISL26712 FOR VDD = www.DataSheet.co. 0.0 0.5 2.0 2.5 FIGURE 14. CHANGE IN OFFSET ERROR vs REFERENCE VOLTAGE FOR VDD = 5V AND 3V FOR THE ISL26712 12.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 0.0 ...

Page 11

... CODES CODES 0 2044 2045 2046 2047 2048 CODE FIGURE 17. HISTOGRAM OF 10,000 CONVERSIONS INPUT FOR THE ISL26712 WITH VDD = 5V 0 -20 -40 -60 -80 -100 -120 -140 0 100 200 300 FREQUENCY (kHz) FIGURE 19. ISL26710 DYNAMIC PERFORMANCE WITH VDD = 5V 0.25 ...

Page 12

... ISL26712, ISL26710, ISL26708 Typical Performance Characteristics -20 -40 -60 -80 -100 -120 -140 FIGURE 23. ISL26708 DYNAMIC PERFORMANCE WITH VDD = 5V 12 (Continued) 0 8192-POINT FFT f SAMPLE f = 95.2kHz IN SINAD = 49.8dB THD = -76dB SFDR = 67dB 0 100 200 300 FREQUENCY (kHz) www.DataSheet.co.kr = 1MSPS 400 500 March 14, 2012 FN7999.0 ...

Page 13

... ADC Transfer Function The output coding for the ISL26712/10/08 is twos complement. The first code transition occurs at successive LSB values (i.e., 1 LSB, 2 LSB, and so on). The LSB size of the ISL26712 is 2*VREF/4096, while the LSB size of the ISL26710 is 2*VREF/1024 and the ISL26708 is 2*VREF/512. The ideal transfer characteristic of the ISL26712/10/08 is shown in Figure 25 ...

Page 14

... ISL26712, ISL26710, ISL26708 V 5.0 4.0 AIN+ 2.0V P-P 3.0 2.0 1.0 VREF = 2V V 5.0 AIN+ 4.0 2.5V P-P 3.0 2.0 1.0 VREF = 2.5V FIGURE 27. RELATIONSHIP BETWEEN VREF AND FULL-SCALE RANGE 14 VCM 5.0 4.0 AIN– 3.0 VCM 2.0 1.0 t FIGURE 28. RELATIONSHIP BETWEEN VREF AND VCM FOR VDD = 5V VCM AIN– 3.0 VCM 2.5 2.0 1.5 t 1.0 0.5 FIGURE 29. RELATIONSHIP BETWEEN VREF AND VCM FOR VDD = 3V Voltage Reference Input www ...

Page 15

... SAR decision process is begun. This process uses 12 SCLK cycles for the 12-bit ISL26712. Each SAR decision is presented to the SDATA output on the next clock cycle after the SAR decision is performed. The SAR process (12 bits) is completed on SCLK cycle 15 ...

Page 16

... ISL26712, ISL26710, ISL26708 FIGURE 32. ISL26712 SYSTEM TIMING www.DataSheet.co.kr FIGURE 33. ISL26710 SYSTEM TIMING FIGURE 34. ISL26708 SYSTEM TIMING 16 FN7999.0 March 14, 2012 Datasheet pdf - http://www.DataSheet4U.net/ ...

Page 17

... ACQUISITION TIME To achieve the maximum sample rate (1 MSps) in the ISL26712 device, the maximum acquisition time is 200ns. For slower conversion rates, or for conversions performed using a slower SCLK value than 18MHz, the minimum acquisition time is 200ns. ...

Page 18

... The ISL26712/10/08 is tested using the CCIF standard, where two input frequencies near the top end of the input bandwidth are used. In this case, the second order terms are usually ...

Page 19

... ISL26712, ISL26710, ISL26708 Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure you have the latest revision. DATE REVISION March 14, 2012 FN7999.0 Initial Release. Products Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The Company's products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, handheld products, and notebooks ...

Page 20

... ISL26712, ISL26710, ISL26708 Small Outline Transistor Plastic Packages (SOT23-8) 0.20 (0.008 0.10 (0.004 WITH PLATING b1 c BASE METAL 4X θ1 R1 SEATING L PLANE α θ1 VIEW C 20 P8.064 VIEW C 8 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE ...

Page 21

... ISL26712, ISL26710, ISL26708 Package Outline Drawing L8.3x3I 8 LEAD THIN DUAL FLAT NO-LEAD PLASTIC PACKAGE Rev 1 6/09 3.00 (4X) 0.15 6 PIN 1 INDEX AREA TOP VIEW ( 2. 1.95) (1.64) ( 2.80 ) PIN 1 (6x 0.65) TYPICAL RECOMMENDED LAND PATTERN 21 2X 1.950 0.400 ± 0.10 Max 0.80 www.DataSheet.co. 0.60 0.30) NOTES: 1. Dimensions are in millimeters. Dimensions ...

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