AD5590

16 Input, 16 Output Analog I/O Port with Integrated Amplifiers AD5590 FEATURES Input channels 12-bit successive approximation ADC 16 inputs with sequencer Fast throughput rate: 1 MSPS Wide input bandwidth: 70 dB SNR at fIN = 50 kHz Output channels 16 outputs with 12-bit DACs On-chip 2.5 V reference Hardware LDAC and LDAC override function CLR function to programmable code Rail-to-rail operation Operational amplifiers Offset voltage: 2.2 mV maximum Low input bias current: 1 pA maximum Single supply operation Low noise: 22 nV/√Hz Unity gain stable Flexible serial interface SPI-/QSPI-/MICROWIRE-/DSP-compatible −40°C to +85°C operation APPLICATIONS Optical line cards Base stations General-purpose analog I/O Monitoring and control FUNCTIONAL BLOCK DIAGRAM ADCV DD DACV DD (×2) V1+ V2+ V1– V2– VREFIN1/VREFOUT1 POWER-ON RESET LDAC INPUT REGISTER DAC REGISTER STRING DAC 0 1.25V/2.5V REF POWER-DOWN LOGIC BUFFER DSCLK DSYNC1 DSYNC2 DDIN LDAC CLR DAC INTERFACE LOGIC VOUT0 INPUT REGISTER DAC REGISTER STRING DAC 7 BUFFER VOUT7 INPUT REGISTER DAC REGISTER STRING DAC 8 BUFFER VOUT8 INPUT REGISTER DAC REGISTER STRING DAC 15 BUFFER VOUT15 POWER-DOWN LOGIC VDRIVE 1.25V/2.5V REF SEQUENCER 12-BIT SUCCESSIVE APPROXIMATION ADC T/H INPUT MUX VREFIN2/VREFOUT2 VIN0 ASCLK ASYNC ADIN ADOUT ADC INTERFACE LOGIC VINI5 AD5590 IN0(–) IN0(+) OUT0 IN7(–) IN7(+) OUT7 DACGND (×2) ADCGND VREFA 07691-001 Figure 1. Rev. 0 Information furnished by Analog Devices is believed to be accu...