HT7512A
FEATURES
Single 12-bit DAC 6-lead SOT-23 and 8-lead MSOP packages Micropower operation: 140 μA @ 5 V Power-down to 200 n A @ 5 V, 50 n A @ 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 interruptfacility
APPLICATIONS
Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators
FUNCTIONAL BLOCK DIAGRAM
POWER-ON RESET
VDD GND
B HT7512A
DAC REGISTER
REF (+) REF (- )
12-BIT DAC
OUTPUT BUFFER
VOUT
INPUT CONTROL
LOGIC
POWER-DOWN CONTROL LOGIC
REGISTER NETWORK
00934-001
SYNC SCLK DIN
Figure 1.
GENERAL DESCRIPTION
The HT7512A1 is a single, 12-bit buffered voltage out digitalto- analog converter (DAC) that operates from a single 2.7 V to 5.5 V supply consuming 115 μA at 3 V. Its...
