Datasheet AD5593R (Analog Devices)

8-Channel, 12-Bit, Configurable ADC/DAC with On-Chip Reference, I2C Interface Data Sheet AD5593R FEATURES GENERAL DESCRIPTION 8-channel, configurable ADC/DAC/GPIO
The AD5593R has eight input/output (I/O) pins, which can be
Configurable as any combination of
independently configured as digital-to-analog converter (DAC)
8 12-bit DAC channels
outputs, analog-to-digital converter (ADC) inputs, digital outputs,
8 12-bit ADC channels
or digital inputs. When an I/O pin is configured as an analog
8 general-purpose I/O pins
output, it is driven by a 12-bit DAC. The output range of the
Integrated temperature sensor
DAC is 0 V to VREF or 0 V to 2 × VREF. When an I/O pin is
16-lead TSSOP and LFCSP and 16-ball WLCSP packages
configured as an analog input, it is connected to a 12-bit ADC
I2C interface
via an analog multiplexer. The input range of the ADC is 0 V to
APPLICATIONS
VREF or 0 V to 2 × VREF. The I/O pins can also be configured to be general-purpose, digital input or output (GPIO) pins. The
Control and monitoring
state of the GPIO pins can be set or read back by accessing the
General-purpose analog and digital I/O
GPIO write data register and GPIO read configuration registers, respectively, via an I2C write or read operation. The AD5593R has an integrated 2.5 V, 20 ppm/°C reference that is turned off by default and an integrated temperature indicator that gives an indication of the die temperature. The temperature value is read back as part of an ADC read sequence. The AD5593R is available in 16-lead TSSOP and LFCSP, as well as a 16-ball WLCSP, and operates over a temperature range of −40°C to +105°C.
Table 1. Related Products Product Description
AD5592R AD5593R equivalent with SPI interface AD5592R-1 AD5593R equivalent with SPI interface and VLOGIC pin
FUNCTIONAL BLOCK DIAGRAM V V V LOGIC DD REF AD5593R POWER-ON 2.5V RESET REFERENCE GPIO0 INPUT DAC DAC 0 I/O0 REGISTER REGISTER SCL SDA GPIO7 A0 I2C INPUT DAC I/O7 DAC 7 INTERFACE REGISTER REGISTER LOGIC RESET MUX SEQUENCER 12-BIT SUCCESSIVE T/H APPROXIMATION ADC TEMPERATURE INDICATOR
001
GND
12507- Figure 1.
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Document Outline Features Applications General Description Functional Block Diagram Revision History Specifications Timing Characteristics Timing Diagram Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation DAC Section Resistor String DAC Output Buffer ADC Section Calculating ADC Input Current GPIO Section Internal Reference Reset Function Temperature Indicator Serial Interface Write Operation Read Operation Pointer Byte Control Registers General-Purpose Control Register Configuring the AD5593R DAC Write Operation LDAC Mode Operation DAC Readback ADC Operation GPIO Operation Setting Pins as Outputs Setting Pins as Inputs Three-State Pins 85 kΩ Pull-Down Pins Power-Down/Reference Control Reset Function Applications Information Microprocessor Interfacing AD5593R to ADSP-BF537 Interface Layout Guidelines Outline Dimensions Ordering Guide