AD7170 Analog Devices, AD7170 Datasheet
AD7170
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AD7170 Summary of contents
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... The AD7170 operates with a power supply from 2 5. available in a 10-lead LFCSP package. The AD7171 is a 16-bit version of the AD7170. It has the same feature set as the AD7170 and is pin-for-pin compatible. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. ...
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... AD7170 TABLE OF CONTENTS Features .............................................................................................. 1 Interface ............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Characteristics..................................................................... 5 Timing Diagrams.......................................................................... 5 Absolute Maximum Ratings............................................................ 6 Thermal Resistance ...................................................................... 6 ESD Caution.................................................................................. 6 Pin Configuration and Function Descriptions............................. 7 Typical Performance Characteristics ............................................. 8 Output Noise and Resolution Specifications ................................ 9 ADC Circuit Information.............................................................. 10 REVISION HISTORY 9/11— ...
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... V DD 400 nA/V ±0.15 nA/V/°C 110 kHz 0 100 mV 140 mV ±2 μ Rev Page AD7170 Test Conditions/Comments Settling time = 3/f ADC INx REF INx REF INx REF INx ...
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... Power Supply Currents I Current DD I (Power-Down/Reset Mode Temperature range is –40°C to +105°C. 2 Specification is not production tested but is supported by characterization data at initial product release. 3 Digital inputs equal GND AD7170B Typ Max − 0.6 DD 0.4 0.4 ±2 5 5.25 110 130 135 150 5 Rev Page ...
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... SCLK ( INPUT OUTPUT Figure 3. Read Cycle Timing Diagram PDRST ( DOUT/RDY ( INPUT OUTPUT Figure 4. Resetting the AD7170 Rev Page (10 and timed from a voltage level of 1 limits ...
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... AD7170 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 3. Parameter V to GND DD Analog Input Voltage to GND Reference Input Voltage to GND Digital Input Voltage to GND Digital Output Voltage to GND V /Digital Input Current INx Operating Temperature Range Storage Temperature Range Maximum Junction Temperature ...
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... Connect the exposed pad to ground. SCLK AD7170 DOUT/RDY 2 9 PDRST AIN(+) TOP VIEW DD (Not to Scale) AIN(– GND REFIN(+) 5 6 REFIN(–) NOTES CONNECT. 2. CONNECT EXPOSED PAD TO GROUND. Figure 5. Pin Configuration Rev Page AD7170 Figure 13 for further details ...
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... REF REF –40 – TEMPERATURE (°C) Figure 6. AD7170 RMS Noise vs. Temperature 0.020 0.015 0.010 0.005 0 –0.005 –0.010 –0.015 –3 –2 – (V) IN Figure 7. Integral Nonlinearity (V 180 160 140 120 –40 – ...
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... Data Sheet OUTPUT NOISE AND RESOLUTION SPECIFICATIONS Table 6 shows the rms noise of the AD7170. The numbers given are for and reference. These numbers are typical and are generated with a differential input voltage The corresponding p-p resolution is also listed, along with the effective resolution (ENOB) ...
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... This resets the logic, the digital filter, and the analog modulator. PDRST must be held low for 100 ns minimum to initiate the reset function (see When PDRST is taken high, the AD7170 is taken out of power- down mode. When the on-chip clock has powered up (1 ms, typically), the modulator then begins sampling the analog input. ...
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... An error occurs when the analog input is outside range. ID1, ID0: ID bits. These bits indicate the ID number for the AD7170. Bit ID1 and Bit ID0 are set to 0 for the AD7170. PAT2, PAT1, PAT0: status pattern bits. They are set to 101 by default ...
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... The ground plane of the AD7170 should be allowed to run under the AD7170 to prevent noise coupling. The power supply lines to the AD7170 should use as wide a trace as possible to provide low impedance paths and reduce the effects of glitches on the power supply line. Fast switching signals such as clocks ...
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... REFIN(–) Figure 13. Temperature System Using the AD7170 SIGNAL CONDITIONING CIRCUIT Figure 14 shows the AD7170 used in a signal conditioning circuit for a single-ended analog input low side shunt current monitor, a low resistance shunt resistor converts the current to voltage. The resulting voltage is amplified and applied to the AD7170. 1kΩ ...
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... AD7170 OUTLINE DIMENSIONS PIN 1 INDEX AREA 0.80 0.75 0.70 SEATING PLANE ORDERING GUIDE Temperature 1 Model Range AD7170BCPZ-REEL7 −40°C to +105°C AD7170BCPZ-500RL7 −40°C to +105°C EVAL-AD7170EBZ RoHS Compliant Part. 2.48 2.38 3.10 2.23 3.00 SQ 2.90 6 EXPOSED 0.50 0.40 0.30 5 TOP VIEW BOTTOM VIEW FOR PROPER CONNECTION OF THE EXPOSED PAD, REFER TO ...
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... Data Sheet NOTES Rev Page AD7170 ...
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... AD7170 NOTES ©2009–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D08416-0-9/11(A) Rev Page Data Sheet ...