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AD7890AR-2 データシート(PDF) 6 Page - Analog Devices |
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AD7890AR-2 データシート(HTML) 6 Page - Analog Devices |
6 / 20 page AD7890 –6– REV. A PIN CONFIGURATION DIP and SOIC AGND SMODE REF OUT/REF IN VIN8 CONVST CLK IN SCLK VIN5 VIN4 VIN3 DGND CEXT VIN7 VIN6 TFS VIN2 RFS VIN1 DATA OUT AGND DATA IN SHA IN VDD MUX OUT 14 1 2 24 23 5 6 7 20 19 18 3 4 22 21 8 17 9 16 10 15 11 TOP VIEW (Not to Scale) 11 12 13 AD7890 Pin Mnemonic Description 17 VIN2 Analog Input Channel 2. Single-ended analog input. The analog input range on is ±10 V (AD7890- 10), 0 V to +4.096 V (AD7890-4) and 0 V to +2.5 V (AD7890-2). The channel to be converted is selected using the A0, A1 and A2 bits in the control register. The multiplexer has guaranteed break-before-make operation. 18 VIN3 Analog Input Channel 3. Single-ended analog input. The analog input range on is ±10 V (AD7890- 10), 0 V to +4.096 V (AD7890-4) and 0 V to +2.5 V (AD7890-2). The channel to be converted is selected using the A0, A1 and A2 bits in the control register. The multiplexer has guaranteed break-before-make operation. 19 VIN4 Analog Input Channel 4. Single-ended analog input. The analog input range on is ±10 V (AD7890- 10), 0 V to +4.096 V (AD7890-4) and 0 V to +2.5 V (AD7890-2). The channel to be converted is selected using the A0, A1 and A2 bits in the control register. The multiplexer has guaranteed break-before-make operation. 20 VIN5 Analog Input Channel 5. Single-ended analog input. The analog input range on is ±10 V (AD7890- 10), 0 V to +4.096 V (AD7890-4) and 0 V to +2.5 V (AD7890-2). The channel to be converted is selected using the A0, A1 and A2 bits in the control register. The multiplexer has guaranteed break-before-make operation. 21 VIN6 Analog Input Channel 6. Single-ended analog input. The analog input range on is ±10 V (AD7890- 10), 0 V to +4.096 V (AD7890-4) and 0 V to +2.5 V (AD7890-2). The channel to be converted is selected using the A0, A1 and A2 bits in the control register. The multiplexer has guaranteed break-before-make operation. 22 VIN7 Analog Input Channel 7. Single-ended analog input. The analog input range on is ±10 V (AD7890- 10), 0 V to +4.096 V (AD7890-4) and 0 V to +2.5 V (AD7890-2). The channel to be converted is selected using the A0, A1 and A2 bits in the control register. The multiplexer has guaranteed break-before-make operation. 23 VIN8 Analog Input Channel 8. Single-ended analog input. The analog input range on is ±10 V (AD7890- 10), 0 V to +4.096 V (AD7890-4) and 0 V to +2.5 V (AD7890-2). The channel to be converted is selected using the A0, A1 and A2 bits in the control register. The multiplexer has guaranteed break-before-make operation. 24 REF OUT/REF IN Voltage Reference Output/Input. The part can be used with either its own internal reference or with an external reference source. The on-chip +2.5 V reference voltage is provided at this pin. When using this internal reference as the reference source for the part, REF OUT should decoupled to AGND with a 0.1 µF disc ceramic capacitor. The output impedance of this reference source is typi- cally 2 k Ω. When using an external reference source as the reference voltage for the part, the refer- ence source should be connected to this pin. This overdrives the internal reference and provides the reference source for the part. The REF IN input is buffered on-chip. The nominal reference voltage for correct operation of the AD7890 is +2.5 V. |
同様の部品番号 - AD7890AR-2 |
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同様の説明 - AD7890AR-2 |
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