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ADC-HX12BGC Scheda tecnica(PDF) 1 Page - Murata Power Solutions Inc. |
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ADC-HX12BGC Scheda tecnica(HTML) 1 Page - Murata Power Solutions Inc. |
1 / 6 page FEATURES 12-bit resolution 8 or 20 microsecond conversion times 5 input voltage ranges Internal high Z input buffer Short-cycle operation MIL-STD-883 models available Figure 1. Functional Block Diagram FEATURES S PRECISION REF (+6.3V) CLOCK SUCCESSIVE APPROXIMATION REGISTER 12-BIT DAC COMPARATOR 6.3k 5k REF. OUT 18 +5V POWER 16 27 GAIN ADJUST 15 14 20 30 BUFFER INPUT 29 23 BIPOLAR OFFSET 22 COMPARATOR INPUT 24 25 26 32 SERIAL DATA OUT 13 1 MSB 12 1 MSB 11 2 10 3 9 4 8 5 7 6 6 7 5 8 4 9 3 10 2 11 1 12 LSB. 21 19 17 CLOCK RATE PARALLEL DATA OUT BIT NO. + 5k BUFFER OUTPUT 10V INPUT 20V INPUT ANALOG COMMON BUFFER AMPLIFIER CLOCK OUT START CONV. DIGITAL COMMON SHORT CYCLE E.O.C. STATUS –15V POWER 31 +15V POWER 28 The ADC-HX and ADC-HZ Series are self- contained, high-performance, 12-bit A/D converters manufactured with thick and thin-film hybrid tech- nology. They use the successive approximation conversion technique to achieve a 12-bit conver- sion in 20 and 8 microseconds, respectively. Five input voltage ranges are programmable by external pin connection. An internal buffer amplifier is also provided for applications in which 50 megohm input impedance is required. These converters utilize a fast 12-bit monolithic DAC which includes a precision zener reference source. The circuit also contains a fast mono- lithic comparator, a monolithic 12-bit successive approximation register, a clock and a monolithic buffer amplifier. Nonlinearity is specified at ±1/2LSB maximum. Both models have identical operation except for conversion speed. They can be short-cycled to give faster conversions in lower-resolution applica- tions. Use of the internal buffer amplifier increases conversion time by 3 microseconds, the settling time of the amplifier. Output coding is comple- mentary binary, complementary offset binary, or complementary two’s complement. Serial data is also brought out. The package is a 32-pin ceramic TDIP. Models are available for use in either com- mercial (0 to +70°C) or military (–55 to +125°C) operating temperature ranges. MIL-STD-883 and DESC Standard Military Drawing models are also available. PRODUCT OVERVIEW INPUT/OUTPUT CONNECTIONS Pin Function Pin Function 1 BIT 12 (LSB) 32 SERIAL DATA OUTPUT 2 BIT 11 31 –15V POWER 3 BIT 10 30 BUFFER INPUT 4 BIT 9 29 BUFFER OUTPUT 5 BIT 8 28 +15V POWER 6 BIT 7 27 GAIN ADJUST 7 BIT 6 26 ANALOG COMMON 8 BIT 5 25 20V INPUT RANGE 9 BIT 4 24 10V INPUT RANGE 10 BIT 3 23 BIPOLAR OFFSET 11 BIT 2 22 COMPARATOR INPUT 12 BIT 1 (MSB) 21 START CONVERT 13 BIT 1 (MSB) 20 E.O.C. (STATUS) 14 SHORT CYCLE 19 CLOCK OUT 15 DIGITAL COMMON 18 REFERENCE OUT 16 +5V POWER 17 CLOCK RATE ADC-HX, ADC-HZ Series 12-Bit, 8 and 20μsec Analog-to-Digital Converters For full details go to www.murata-ps.com/rohs www.murata-ps.com Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 MDA_ADCHXHZ.B01 Page 1 of 6 |
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