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AD7247ATQ Arkusz danych(PDF) 5 Page - Analog Devices |
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AD7247ATQ Arkusz danych(HTML) 5 Page - Analog Devices |
5 / 12 page AD7237A/AD7247A REV. 0 –5– AD7247A PIN FUNCTION DESCRIPTION (DIP PIN NUMBERS) Pin Mnemonic Description 1 REF OUT Voltage Reference Output. The internal 5 V analog reference is provided at this pin. To operate the part with internal reference, REF OUT should be connected to REF IN. 2ROFSB Output Offset Resistor for DAC B. This input configures the output ranges for DAC B. It is connected to VOUTB for the +5 V range, to GND for the +10 V range and to REF IN for the ± 5 V range. 3VOUTB Analog Output Voltage from DAC B. This is the buffer amplifier output voltage. Three different output voltage ranges can be chosen: 0 V to +5 V, 0 V to +10 V and ±5 V. The amplifier is capable of developing +10 V across a 2 k Ω resistor to GND. 4 DB11 Data Bit 11 (MSB). 5 DB10 Data Bit 10. 6 GND Ground. Ground reference for all on-chip circuitry. 7–15 DB9-DB1 Data Bit 9 to Data Bit 1. 16 DB0 Data Bit 0 (LSB). 17 CSB Chip Select Input for DAC B. Active low logic input. DAC B is selected when this input is active. 18 CSA Chip Select Input for DAC A. Active low logic input. DAC A is selected when this input is active. 19 WR Write Input. WR is an active low logic input which is used in conjunction with CSA and CSB to write data to the DAC latches. 20 VDD Positive Supply (+12 V to +15 V). 21 VOUTA Analog Output Voltage from DAC A. This is the buffer amplifier output voltage. Three different output voltage ranges can be chosen: 0 V to +5 V, 0 V to +10 V and ±5 V. The amplifier is capable of developing +10 V across a 2 k Ω resistor to GND. 22 VSS Negative Supply (0 V or –12 V to –15 V). 23 ROFSA Output Offset Resistor for DAC A. This input configures the output ranges for DAC A. It is connected to VOUTA for the +5 V range, to GND for the +10 V range and to REF IN for the ±5 V range. 24 REF IN Voltage Reference Input. The common reference voltage for both DACs is applied to this pin. It is internally buffered before being applied to both DACs. The nominal reference voltage for correct operation of the AD7247A is 5 V. AD7237A PIN CONFIGURATION DIP and SOIC AD7247A PIN CONFIGURATION DIP and SOIC |
Podobny numer części - AD7247ATQ |
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Podobny opis - AD7247ATQ |
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