AS1538-BTST austriamicrosystems, AS1538-BTST Datasheet
AS1538-BTST
Specifications of AS1538-BTST
Related parts for AS1538-BTST
AS1538-BTST Summary of contents
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... ² General Description The AS1538/AS1540 are single-supply, low-power, 12- bit data acquisition devices featuring a serial I²C inter- face and an 8-channel (AS1538) or 4-channel (AS1540) multiplexer. The analog-to-digital (A/D) converters features a sam- ple-and-hold amplifier an internal asynchronous clock and an internal reference. 2 The combination serial, 2-wire interface and ...
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... AS1538/AS1540 Data Sheet - Pinout Pin Assignments Figure 2. Pin Assignments (Top View) CH0 1 CH1 2 CH2 3 CH3 4 AS1538 CH4 5 CH5 6 7 CH6 CH7 8 Pin Descriptions Table 1. Pin Descriptions AS1538 AS1540 Pin Name - 1:3,16 CH0:CH3 1:8 - CH0:CH7 REF www.austriamicrosystems.com SDA CH1 1 14 SCL CH2 ...
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... AS1538/AS1540 Data Sheet - Absolute Maximum Ratings Stresses beyond those listed in Table 2 and functional operation of the device at these or any other conditions beyond those indicated in istics on page 4 is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 2. Absolute Maximum Ratings ...
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... AS1538/AS1540 Data Sheet - Electrical Characteristics Electrical Characteristics +V = +2.7 to +5.25V +2.5V external, SCL = 3.4MHz REF Table 3. Electrical Characteristics Symbol Parameter Analog Input Fullscale Input Span Absolute Input Range Capacitance I Leakage Current LEAK Static Performance No Missing Codes Integral Linearity Error Differential Linearity Error ...
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... AS1538/AS1540 Data Sheet - Table 3. Electrical Characteristics Symbol Parameter CMOS Digital I/O V Input High Logic Level IH V Input Low Logic Level IL V Output Low Logic Level OL I Input High Leakage Current IH I Input Low Leakage Current IL Data Format Power Supply Requirements +V Power Supply Voltage ...
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... AS1538/AS1540 Data Sheet - Table 4. Timing Characteristics Symbol Parameter 1 SCL Fall Time T FALLSCLK 1 SDA Fall Time T RISESDA 1 SDA Fall Time T FALLSDA STOP Condition Setup Time T SETUPSTOP 1. Guaranteed by design and characterized on sample base. Figure 3. Timing Diagram SDA t BUF t HOLDSTART LOW SCL START STOP www ...
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... AS1538/AS1540 Data Sheet - Typical Operating Characteristics V = 3.6V 2.5V (internal REF SCL Figure 4. DNL vs. Digital Output Code, Int. Reference 1 f SAMPLE 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0 1024 2048 3072 Digital Output Code Figure 6. DNL vs. Digital Output Code, Ext. Reference 1 f SAMPLE ...
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... AS1538/AS1540 Data Sheet - Figure 10. Offset Error vs. Supply Voltage 2.7 3.2 3.7 4.2 Supply Voltage (V) Figure 12. Gain Error vs. Temperature -45 -30 - Temperature (°C) Figure 14. Gain Error vs. Supply Voltage 2.7 3.2 3.7 4.2 Supply Voltage (V) www.austriamicrosystems.com Figure 11. Offset Matching vs. Supply Voltage 1 0.8 0.6 0.4 ...
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... AS1538/AS1540 Data Sheet - Figure 16. Supply Current vs. Supply Voltage, PD=00 300 250 200 150 100 50 0 2.7 3.2 3.7 4.2 Supply Voltage (V) Figure 18. Supply Current vs. Supply Voltage, PD=11 1000 800 600 400 200 0 2.7 3.2 3.7 4.2 Supply Voltage (V) Figure 20. FFT, Int. Reference ...
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... The AS1538/AS1540 successive approximation register (SAR) A/D converter architecture is based on capacitive redistribution which inherently includes a sample-and- hold function. The AS1538/AS1540 core is controlled by an internally generated free-running clock. When the device is not perform- ing conversions or being addressed, the A/D converter-core and internal clock are powered off. ...
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... Data Sheet - Reference Voltage The AS1538/AS1540 can operate with an internal 2.5V reference or an external reference +5V supply is used, an external +5V reference is required in order to provide full dynamic range for reference can be as low as 1V. When using a +2.7V supply, the internal +2.5V reference will provide full dynamic range for ...
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... Slave Transmitter Mode. The first byte (the slave address) is received and handled as in the slave receiver mode. However, in this mode the direction bit will indicate that the transfer direction is reversed. Serial data is transmitted on SDA by the AS1538 while the serial clock is input on SCL. START and STOP conditions are rec- ognized as the beginning and end of a serial transfer. ...
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... SD: Single-Ended/Differential Inputs 0: Differential Inputs 1: Single-Ended Inputs C2, C1, C0: Channel Selections PD1, PD0: Power-Down Selection X: Unused Powerdown Selection Powerdown modes for the AS1538/AS1540 are selected by setting bits PD0 and PD1 of a command byte mand Byte on page 12). Table 5. Powerdown Mode Bit Settings PD1 PD0 0 0 Powerdown between A/D converter conversions ...
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... AS1538/AS1540 Data Sheet - Application Information Initiating a Conversion After the AS1538/AS1540 has been write-addressed by the bus master, the A/D converter circuitry is powered on, and conversions will begin when a command byte bit C0 is valid, the AS1538/AS1540 will return an ACK. Reading Data Data can be read from the AS1538/AS1540 by read-addressing the device (LSB of address byte set to 1 mand Byte on page 12)) and receiving the transmitted bytes ...
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... Data Sheet - Reading with Internal Reference On/Off The internal reference defaults to off when the AS1538/AS1540 power is on. If the reference (internal or external) is continuously turned on and off, a proper amount of settling time must be added before a normal conversion cycle can be started. The exact amount of settling time needed varies depending on the reference capacitor. For example for a reference capacitor of 4.7µ ...
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... In order to achieve 12-bit accuracy conversion when using the internal reference, the internal reference set- tling time must be considered. If bit PD1 has been set to logic 0 while using the AS1538/AS1540, then the settling time must be reconsidered after PD1 is set to logic 1 (i.e., whenever the internal reference is turned on after it has been turned off, the set- tling time must be long enough to get 12-bit accuracy conversion) ...
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... AS1538/AS1540 Data Sheet - Package Drawings and Markings Figure 30. TSSOP-16 Package Notes: 1. All dimensions are in millimeters; angles in degrees. 2. Dimensioning and tolerancing per ASME Y14.5M – 1994. 3. Dimension D does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, and gate burrs shall not exceed ...
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... AS1538/AS1540 Data Sheet - Figure 31. TQFN 4x4 16-pin Package Symbol Min Typ A 0.70 0.75 A1 0.00 0.02 L 0.45 0.55 L1 0.03 K 0.20 aaa 0.10 bbb 0.10 ccc 0.10 ddd 0.05 Notes: 1. Dimensioning and tolerancing conform to ASME Y14.5M-1994. 2. All dimensions are in millimeters, angle is in degrees. ...
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... AS1538/AS1540 Data Sheet - Ordering Information The device is available as the standard products shown in Table 7. Ordering Information Model Marking AS1538-BTST AS1538 8-Channel, 12-Bit I²C Analog-to-Digital Converter AS1538-BTSU AS1538 8-Channel, 12-Bit I²C Analog-to-Digital Converter AS1540-BQFT AS1540 4-Channel, 12-Bit I²C Analog-to-Digital Converter www.austriamicrosystems.com Table 7. Description ...
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... AS1538/AS1540 Data Sheet Copyrights Copyright © 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, trans- lated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. ...