a
+2.7 V to +5.5 V, 140 A, Rail-to-Rail Output 12-Bit DAC in a SOT-23 AD5320*
FUNCTIONAL BLOCK DIAGRAM
VDD GND POWER-O...
a
+2.7 V to +5.5 V, 140 A, Rail-to-Rail Output 12-Bit DAC in a SOT-23 AD5320*
FUNCTIONAL BLOCK DIAGRAM
VDD GND POWER-ON RESET
FEATURES Single 12-Bit DAC 6-Lead SOT-23 and 8-Lead SOIC Packages Micropower Operation: 140 A @ 5 V Power-Down to 200 nA @ 5 V, 50 nA @ 3 V +2.7 V to +5.5 V Power Supply Guaranteed Monotonic by Design Reference Derived from Power Supply Power-On-Reset to Zero Volts Three Power-Down Functions Low Power Serial Interface with Schmitt-Triggered Inputs On-Chip Output Buffer Amplifier, Rail-to-Rail Operation SYNC Interrupt Facility APPLICATIONS Portable Battery Powered Instruments Digital Gain and Offset Adjustment Programmable
Voltage and Current Sources Programmable Attenuators
AD5320
REF (+) REF (–)
DAC REGISTER
12-BIT DAC
OUTPUT BUFFER
VOUT
INPUT CONTROL LOGIC
POWER-DOWN CONTROL LOGIC
RESISTOR NETWORK
SYNC
SCLK
DIN
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The AD5320 is a single, 12-bit buffered
voltage out DAC that operates from a single +2.7 V to +5.5 V supply consuming 115 µA at 3 V. Its on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The AD5320 utilizes a versatile three-wire serial interface that operates at clock rates up to 30 MHz and is compatible with standard SPI™, QSPI™, MICROWIRE™ and DSP interface standards. The reference for AD5320 is derived from the power supply inputs and thus gives the widest dynamic output range. The part incorporates a power-on-reset circuit that ensures that the DA...