MAX187BCWE+ Maxim Integrated Products, MAX187BCWE+ Datasheet
MAX187BCWE+
Specifications of MAX187BCWE+
Related parts for MAX187BCWE+
MAX187BCWE+ Summary of contents
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... BUFFER ENABLE/DISABLE MAX189 NOTE: PIN NUMBERS SHOWN ARE FOR 8-PIN DIPs ONLY. ™ SPI and QSPI are trademarks of Motorola. Microwire is a trademark of National Semiconductor. ________________________________________________________________ Maxim Integrated Products Call toll free 1-800-998-8800 for free samples or literature. ________________________________Features 12-Bit Resolution ± 1 ⁄ ...
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Low-Power, 12-Bit Serial ADCs ABSOLUTE MAXIMUM RATINGS V to GND .............................................................-0.3V to +6V DD AIN to GND................................................-0. REF to GND ...............................................-0. Digital Inputs to GND.................................-0. Digital Outputs to GND..............................-0. SHDN to ...
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Low-Power, 12-Bit Serial ADCs ELECTRICAL CHARACTERISTICS (continued +5V ±5%; GND = 0V; unipolar input mode; 75ksps reference 4.096V, 4.7µF capacitor at REF pin, or MAX189—external reference: V REF capacitor at REF pin; T ...
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Low-Power, 12-Bit Serial ADCs ELECTRICAL CHARACTERISTICS (continued +5V ±5%; GND = 0V; unipolar input mode; 75ksps reference 4.096V, 4.7µF capacitor at REF pin, or MAX189—external reference: V REF capacitor at REF pin; T ...
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Low-Power, 12-Bit Serial ADCs TIMING CHARACTERISTICS (V = +5.0V ±5 unless otherwise noted MIN MAX PARAMETER SYMBOL Track/Hold Acquisition Time t ACQ SCLK Fall to Output Data Valid ...
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Low-Power, 12-Bit Serial ADCs ________________________________________________Typical Operating Characteristics POWER-SUPPLY REJECTION vs. TEMPERATURE 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0 -60 - TEMPERATURE (°C) SUPPLY CURRENT vs. TEMPERATURE 2.2 1.8 MAX187 1.4 MAX189 1.0 0.6 0.2 -60 ...
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Low-Power, 12-Bit Serial ADCs _______________________________________________________________________Pin Description PIN NAME DIP WIDE AIN SHDN REF 5 — GND — 10 AGND — 11 DGND 6 12 DOUT ...
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Low-Power, 12-Bit Serial ADCs DOUT 3k DGND a. High and Figure 1. Load Circuits for DOUT Enable Time DOUT 3k DGND High-Z Figure 2. Load Circuits for ...
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Low-Power, 12-Bit Serial ADCs 4 SCLK 2 7 ANALOG INPUT MAX187 AIN +5V SHUTDOWN 3 6 SHDN DOUT INPUT OFF REF GND 4.7 F Figure ...
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Low-Power, 12-Bit Serial ADCs The ADCs’ input tracking circuitry has a 4.5MHz small- signal bandwidth, and an 8V/µs slew rate possible to digitize high-speed transient events and measure periodic signals with bandwidths exceeding the ADC's sampling rate ...
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Low-Power, 12-Bit Serial ADCs 10000 1000 MAX187 100 MAX189* 10 *REF CONNECTED 0 100 1000 10000 CONVERSIONS PER SECOND Figure 6. Average Supply Current vs. Conversion Rate ____________________Serial Interface Initialization After Power-Up and Starting ...
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Low-Power, 12-Bit Serial ADCs CS SCLK DOUT EOC CONVERSION INTERFACE IDLE EOC IN PROGRESS CONVERSION A/D TRACK 0 STATE 8 CONV MINIMUM CYCLE TIME Figure 8. MAX187/MAX189 Interface Timing Sequence CS t CS0 SCLK ...
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Low-Power, 12-Bit Serial ADCs OUTPUT CODE FULL-SCALE TRANSITION 11 111 11 110 11 101 00 011 00 010 00 001 00 000 INPUT VOLTAGE (LSBs) Figure 10. MAX187/MAX189 Unipolar Transfer Function, 4.096V = Full Scale ...
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Low-Power, 12-Bit Serial ADCs 12.2 12.0 11.8 11.6 11.4 11.2 11.0 10.8 10.6 10.4 (UNDERSAMPLED) 10 100 INPUT FREQUENCY (kHz) Figure 12. Effective Bits vs. Input Frequency The effective resolution (effective number of bits) the ADC provides ...
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Low-Power, 12-Bit Serial ADCs ____________Applications Information Connection to Standard Interfaces The MAX187/MAX189 serial interface is fully compatible with SPI, QSPI, and Microwire standard serial interfaces serial interface is available, set the CPU’s serial interface in master mode ...
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Low-Power, 12-Bit Serial ADCs SPI and Microwire When using SPI or QSPI, set CPOL = 0 and CPHA = 0. Conversion begins with a CS falling edge. DOUT goes low, indicating a conversion in progress. Wait until DOUT goes ...
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Low-Power, 12-Bit Serial ADCs The ADC results are transmitted across a 1500V isola- tion barrier provided by three 6N136 opto-isolators. Isolated power must be supplied to the converter and the isolated side of the opto-couplers. 74HC595 three- state shift ...
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Low-Power, 12-Bit Serial ADCs __Ordering Information (continued) TEMP. RANGE PIN-PACKAGE ERROR PART MAX187AEPA -40°C to +85°C 8 Plastic DIP MAX187BEPA -40°C to +85°C 8 Plastic DIP MAX187CEPA -40°C to +85°C 8 Plastic DIP MAX187AEWE -40°C to +85°C 16 Wide ...
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Low-Power, 12-Bit Serial ADCs ___________________Chip Topography MAX187/MAX189 V SCLK DD AIN SHDN REF AGND 0.117" (2.97mm) TRANSISTOR COUNT: 2278; SUBSTRATE CONNECTED ______________________________________________________________________________________ CS 0.151" (3.84mm) DOUT DGND AGND 19 ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 20 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1993 Maxim Integrated Products ...