Файл:AD7943, AD7945, AD7948.pdf
 Размер этого JPG-превью для исходного PDF-файла: 1280 × 1656 пикселей. Другие разрешения: 320 × 414 пикселей | 800 × 1035 пикселей | 2550 × 3300 пикселей. a FEATURES 12-Bit Multiplying DACs Guaranteed Specifications with +3.3 V/+5 V Supply 0.5 LSBs INL and DNL Low Power: 5 W typ Fast Interface 40 ns Strobe Pulsewidth (AD7943) 40 ns Write Pulsewidth (AD7945, AD7948) Low Glitch: 60 nV-s with Amplifier Connected Fast Settling: 600 ns to 0.01% with AD843 +3.3 V/+5 V Multiplying 12-Bit DACs AD7943/AD7945/AD7948 FUNCTIONAL BLOCK DIAGRAMS VDD RFB AD7943 IOUT1 12-BIT DAC VREF IOUT2 CLR LD1 LD2 DAC REGISTER AGND SRI INPUT SHIFT REGISTER SRO APPLICATIONS Battery-Powered Instrumentation Laptop Computers Upgrades for All 754x Series DACs (5 V Designs) STB1 STB2 STB3 STB4 VDD GENERAL DESCRIPTION The AD7943, AD7945 and AD7948 are fast 12-bit multiplying DACs that operate from a single +5 V supply (Normal Mode) and a single +3.3 V to +5 V supply (Biased Mode). The AD7943 has a serial interface, the AD7945 has a 12-bit parallel interface, and the AD7948 has an 8-bit byte interface. They will replace the industry-standard AD7543, AD7545 and AD7548 in many applications, and they offer superior speed and power consumption performance. The AD7943 is available in 16-lead DIP, 16-lead SOP (Small Outline Package) and 20-lead SSOP (Shrink Small Outline Package). RFB AD7945 The AD7948 is available in 20-lead DIP, 20-lead SOP and 20lead SSOP. IOUT1 12-BIT DAC VREF AGND 12 CS WR INPUT LATCH 12 DB11–DB0 VREF DGND RFB VDD IOUT1 12-BIT DAC 12 The AD7945 is available in 20-lead DIP, 20-lead SOP and 20lead SSOP. DGND AGND AD7948 DF/DOR CTRL DATA OVERRIDE LOGIC 12 LDAC DAC REGISTER 12 INPUT REGISTERS WR CONTROL LOGIC CSLSB 12 CSMSB DATA STEERING LOGIC 8 DB7–DB0 DGND REV. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1998
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