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AD5304 数据表(PDF) 7 Page - Analog Devices |
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AD5304 数据表(HTML) 7 Page - Analog Devices |
7 / 20 page REV. 0 AD5332/AD5333/AD5342/AD5343 –7– AD5342 FUNCTIONAL BLOCK DIAGRAM VOUTA BUFFER AD5342 VOUTB BUFFER POWER-ON RESET DAC REGISTER DAC REGISTER INPUT REGISTER INPUT REGISTER INTER- FACE LOGIC VDD DB11 DB0 CS WR A0 CLR LDAC . . . VREFA POWER-DOWN LOGIC RESET PD GND VREFB 12-BIT DAC 12-BIT DAC AD5342 PIN FUNCTION DESCRIPTIONS Pin No. Mnemonic Function 1 GAIN Gain Control Pin. This controls whether the output range from the DAC is 0-VREF or 0-2 VREF. 2 BUF Buffer Control Pin. This pin controls whether the reference input to the DAC is buffered or unbuffered. 3VREFB Reference Input for DAC B. 4VREFA Reference Input for DAC A. 5VOUTA Output of DAC A. Buffered output with rail-to-rail operation. 6VOUTB Output of DAC B. Buffered output with rail-to-rail operation. 7, 8 NC No Connect. 9 GND Ground reference point for all circuitry on the part. 10 CS Active Low Chip Select Input. This is used in conjunction with WR to write data to the parallel interface. 11 WR Active low Write Input. This is used in conjunction with CS to write data to the parallel interface. 12 A0 Address pin for selecting between DAC A and DAC B. 13 CLR Asynchronous active low control input that clears all input registers and DAC registers to zeros. 14 LDAC Active low control input that updates the DAC registers with the contents of the input registers. This allows all DAC outputs to be simultaneously updated. 15 PD Power-Down Pin. This active low control pin puts all DACs into power-down mode. 16 VDD Power Supply Pin. These parts can operate from 2.5 V to 5.5 V and the supply should be decoupled with a 10 F capacitor in parallel with a 0.1 F capacitor to GND. 17–28 DB0–DB11 12 Parallel Data Inputs. DB11 is the MSB of these 12 bits. AD5342 PIN CONFIGURATION TOP VIEW (Not to Scale) 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 AD5342 LDAC A0 WR CS GND BUF VREFB VREFA VOUTB VOUTA GAIN PD VDD DB0 DB1 DB2 DB3 DB4 DB9 DB8 DB5 DB6 DB7 12-BIT NC NC CLR DB10 DB11 NC = NO CONNECT |
类似零件编号 - AD5304 |
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类似说明 - AD5304 |
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