AD7948 Datasheet | Analog Devices

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 n V-s with Amplifier Connected Fast Settling: 600 ns to 0.01% with AD843 APPLICATIONS Battery-Powered Instrumentation Laptop puters 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 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 REGISTER 12 INPUT REGISTERS 12 DATA STEERING LOGIC 8 DB7- DB0 DGND CONTROL LOGIC IOUT1 AGND DF/DOR CTRL LDAC WR CSLSB CSMSB 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...