AD5371 Datasheet | Analog Devices

FEATURES 40-channel DAC in 80 Lead LQFP and 100 Ball CSPBGA Guaranteed monotonic to 14 bits Maximum output voltage span of 4 × VREF (20 V) Nominal output voltage range of -4 V to +8 V Multiple, Independent output spans available System calibration function allowing user-programmable offset and gain Channel grouping and addressing features Thermal Monitor Function DSP/microcontroller-patible serial interface LVDS serial interface 2.5 V to 5.5 V JEDEC-pliant digital levels DVCC VDD VSS AGND DNGD 40-Channel, 14-Bit Serial Input, Voltage-Output DAC AD5371 Power-on reset Digital reset (RESET) Clear function to user-defined SIGGND (CLR pin) Simultaneous update of DAC outputs (LDAC pin) APPLICATIONS Level setting in automatic test equipment (ATE) Variable optical attenuators (VOA) Optical switches Industrial control systems Instrumentation FUNCTIONAL BLOCK DIAGRAM LDAC VREF0 CONTROL REGISTER 14 14 8 14 14 14 14 SPI/LVDS SYNC SDI SCLK SYNC SDI SCLK SDO BUSY 8 RESET CLR STATE MACHINE 14 14 14 14 14 A/B SELECT REGISTER X1A REGISTER X1B REGISTER M REGISTER C REGISTER 8 MUX 1 14 14 14 TO MUX 2's 14 X2A REGISTER X2B REGISTER MUX 14 2 14 OFS1 14 REGISTER DAC 0 14 REGISTER OFFSET DAC 1 BUFFER DAC 0 OUTPUT BUFFER AND POWER DOWN CONTROL VOUT8 VOUT9 VOUT10 VOUT11 VOUT12 VOUT13 VOUT14 VOUT15 SIGGND1 SERIAL INTERFACE 14 14 14 14 A/B SELECT REGISTER X1A REGISTER X1B REGISTER M REGISTER C REGISTER 8 MUX 1 14 14 14 TO MUX 2's 14 X2A REGISTER X2B REGISTER MUX 14 2 OFS0 REGISTER 14 OFFSET DAC 0 BUFFER DAC 0 14 REGISTER DAC 0 OUTPUT BUFFER AND POWER DOWN CONTROL BUFFER GROUP 0 VOUT0 VOUT1 VOUT2 VOUT3 VOUT4 VOUT5 VOUT6 VOUT7 SIGGND0 - - - - - - - - - - - - MUX 1 X1A REGISTER X1B REGISTER M REGISTER C REGISTER 14 14 - - - - - - - - - - - - - - - - - - X2A REGISTER X2B REGISTER MUX 14 2 - - - - - - - - - -...