AD7948

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 APPLICATIONS Battery-Powered Instrumentation Laptop Computers Upgrades for All 754x Series DACs (5 V Designs) VREF CLR LD1 LD2 SRI +3.3 V/+5 V Multiplying 12-Bit DACs AD7943/AD7945/AD7948 FUNCTIONAL BLOCK DIAGRAMS VDD RFB IOUT1 IOUT2 AGND AD7943 12-BIT DAC DAC REGISTER INPUT SHIFT REGISTER SRO STB1 STB2 STB3 STB4 VDD RFB DGND 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). The AD7945 is available in 20-lead DIP, 20-lead SOP and 20lead SSOP. The AD7948 is available in 20-lead DIP, 20-lead SOP and 20lead SSOP. AD7945 VREF 12-BIT DAC 12 CS WR INPUT LATCH 12 DB11–DB0 VDD RFB DGND IOUT1 AGND VREF 12-BIT DAC 12 DATA OVERRIDE LOGIC 12 DAC REGIST...