ISL2671286IBZ-T Intersil, ISL2671286IBZ-T Datasheet

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ISL2671286IBZ-T

Manufacturer Part Number
ISL2671286IBZ-T
Description
Analog to Digital Converters - ADC 12 BIT SINGLE ENDED 20KHZ SAR ADC
Manufacturer
Intersil
Datasheet

Specifications of ISL2671286IBZ-T

Rohs
yes
Number Of Channels
1
Architecture
SAR
Conversion Rate
20 ksps
Resolution
12 bit
Input Type
Pseudo-Differential
Snr
No
Interface Type
Serial (3-Wire, SPI)
Operating Supply Voltage
5 V
Maximum Operating Temperature
+ 85 C
Package / Case
SOIC-8 Narrow
Minimum Operating Temperature
- 40 C
Number Of Converters
1
Voltage Reference
External
12-Bit, 20kSPS SAR ADC
ISL2671286
The ISL2671286 is a sampling SAR-type ADC which features
excellent linearity over supply and temperature variations, and
provides a drop-in compatible alternative to all ADS1286
performance grades. The robust high impedance input
minimizes errors due to leakage currents, and specified
measurement accuracy is maintained with input signals up to
the supply rails.
The reference accepts inputs between 1.25V to 5.0V, providing
design flexibility in a wide variety of applications. The
ISL2671286 also features up to 8kV Human Body Model ESD
survivability.
The serial digital interface is SPI compatible and is easily
interfaced to all popular FPGAs and microcontrollers.
Operating from a 5V supply, power dissipation is 1.4mW at a
sampling rate of 20kSPS and just 15µW between conversions
utilizing the Auto Power-Down mode. These features make the
ISL2671286 an excellent solution for remote industrial
sensors and battery-powered instruments.
The ISL2671286 is available in an 8 Ld SOIC package and is
specified for operation over the industrial temperature range
of –40°C to +85°C.
November 1, 2011
FN7863.0
+IN
–IN
VREF
VREF
FIGURE 1. BLOCK DIAGRAM
+VCC
GND
1
LOGIC
SAR
INTERFACE
SERIAL
DCLOCK
DOUT
CS/SHDN
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
Features
• Drop-In Compatible with ADS1286 (All Performance Grades)
• Simple SPI-compatible Serial Digital Interface
• Guaranteed No Missing Codes
• 20kHz Sampling Rate
• +4.50V to +5.25V Supply
• Low 280µA Operating Current (20kSPS)
• Power-down Current between Conversions: 3µA
• Excellent Differential Non-Linearity (0.75LSB Max)
• Low THD: -83dB (Typ)
• Pb-Free (RoHS Compliant)
• Available in SOIC Package
Applications
• Remote Data Acquisition
• Battery Operated Systems
• Industrial Process Control
• Energy Measurement
• Data Acquisition Systems
• Pressure Sensors
• Flow Controllers
-1
-2
-3
3
2
1
0
All other trademarks mentioned are the property of their respective owners.
0
FIGURE 2. DIFFERENTIAL LINEARITY ERROR vs CODE
512
1024
|
Copyright Intersil Americas Inc. 2011. All Rights Reserved
1536
CODE
2048
2560
3072
3584
4096

Related parts for ISL2671286IBZ-T

ISL2671286IBZ-T Summary of contents

Page 1

... FIGURE 2. DIFFERENTIAL LINEARITY ERROR vs CODE CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 Intersil (and design trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. 1024 1536 ...

Page 2

... GND 4 Ordering Information PART NUMBER (Notes 1, 2) ISL2671286IBZ (Note 3) Coming Soon ISL2671286IPZ NOTES: 1. Add “-T*” suffix for tape and reel. Please refer to 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations) ...

Page 3

... Ld SOIC Package (Notes 4, 5 PDIP Package (Notes Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+150°C Case Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+100°C Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Recommended Operating Conditions Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C = +5V 12.5kHz, f REF ...

Page 4

Electrical Specifications +VCC = +5V, V values are +25°C. Boldface limits apply over the operating temperature range, -40°C to +85°C. A SYMBOL PARAMETER REFERENCE INPUT REF REF Input Range REFLEAK Current Drain DIGITAL INPUT/OUTPUT Logic Family V ...

Page 5

Timing Specifications At f CLK operating temperature range, -40°C to +85°C. SYMBOL PARAMETER t Output Data Remains Valid After DCLOCK↓ hDO t DOUT Fall Time f t DOUT Rise Time R t Delay Time, CS/SHDN↓ to DCLOCK↓ CSD t Delay ...

Page 6

DCLOCK t EN DOUT VOL = 0.4V VIH = 2.4V CS/SHDN t DIS DOUT 10% FIGURE 5. TIMING PARAMETER DEFINITIONS 6 ISL2671286 VIL = 0.8V DCLOCK t hDO DOUT VOH = VDD - 0.2V VIL = 0.8V DCLOCK t ...

Page 7

Typical Performance Characteristics otherwise specified. 2.5 2.0 1.5 1.0 0.5 0 SAMPLE RATE (kHz) FIGURE 6. REFERENCE CURRENT vs SAMPLE RATE 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 REFERENCE ...

Page 8

Typical Performance Characteristics otherwise specified. (Continued) 12.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 0.1 1.0 REFERENCE VOLTAGE (V) FIGURE 12. EFFECTIVE NUMBER OF BITS vs REFERENCE VOLTAGE 100 ...

Page 9

Typical Performance Characteristics otherwise specified. (Continued) 0 -25 -50 -75 -100 -125 0 2 FREQUENCY (kHz) FIGURE 18. 4096 POINT FFT 0.50 0.25 0.00 -0.25 -0.50 -55 -35 - TEMPERATURE (°C) FIGURE 20. CHANGE IN GAIN vs TEMPERATURE ...

Page 10

Typical Performance Characteristics otherwise specified. (Continued) 3.0 2.5 2.0 1.5 1.0 0.5 0.0 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 SUPPLY VOLTAGE (V) FIGURE 24. DIGITAL INPUT LINE THRESHOLD vs SUPPLY VOLTAGE 10 ISL2671286 At T ...

Page 11

Functional Description The ISL2671286 is based on a successive approximation register (SAR) architecture utilizing capacitive charge redistribution digital-to-analog converters (DACs). Figure 26 shows a simplified representation of the converter. During the acquisition phase (ACQ), the differential input is stored on ...

Page 12

After reset is complete, a single dummy cycle lasting one conversion must be executed to initialize the switched capacitor track and hold. Once the dummy cycle is complete, the ADC mode is determined by the state of CS/SHDN. At ...

Page 13

This facilitates the use of ground planes that can be separated easily. A minimum etch technique is generally best for ground planes because it gives the best shielding. Digital and analog ground ...

Page 14

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. ...

Page 15

Package Outline Drawing M8.15 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE Rev 3, 3/11 INDEX AREA TOP VIEW 5.00 (0.197) 4.80 (0.189) 1.27 (0.050) 0.51(0.020) 0.33(0.013) SIDE VIEW “A 15 ISL2671286 DETAIL "A" 6.20 (0.244) 5.80 ...

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