STMicroelectronics RHRDAC121
The RHRDAC121 is a 12-bit voltage-output digital-to-analog converter that can operate from 2.3 V to 3.6 V power supply drawing a very low current consumption, with an internal voltage referencing. The output features rail-to-rail swing and the three-wire serial interface operates at clock rates up to 20 MHz compatible with standard SPI. The RHRDAC121 comes in a hermetic ceramic Flat10-lead, and it can operate from -55 °C to +125 °C ambient temperature.| Part No. | RHRDAC121 |
|---|---|
| Datasheet | RHRDAC121 Download |
| Manufacturer |  STMicroelectronics |
| Description | 12-bit D/A converter |
| Buy | Stock & Price |
FEATURES
● 12-bit architecture● Ensured monotonicity
● Rail-to-rail voltage output
● Power-on-reset to zero volt output
● Internal voltage reference
● SYNC interrupt facility
● 2.3 V to 3.6 V power supply range
● Power-down function
● Guaranteed over -55 °C to +125 °C ambient temperature
● Hermetic package
● 100 krad(Si) TID
● SEL-free up to 125 MeV.cm²/mg
● SMD: 5962R21208
● Mass: 0.42 g Application
● Satellite equipment
● Telemetry
● Housekeeping
DESCRIPTION
DS13626 - Rev 3 - April 2026 For further information, contact your local STMicroelectronics sales office. RHRDAC121 Functional description 1 Functional description VCC NC NC VOUT NC* Figure 1. Pin localization 1 10 2 9 3 8 4 7 5 6 GND DIN SCLK SYNC/ NC *pin 5 is internally connected to the metallic upper lid, pin5 can be NC or it can be connected to ground to sink electronic charges Figure 2. Block diagram Power-on Reset DAC register VCC GND 1 10 5 REF(+) REF(-) 12-bit DAC Internally connected to the upper metallic lid Buffer 4 VOUT Input Control Logic Power-down Control Logic 5k 100 k 7 8 9 /SYNC SCLK DIN DS13626 - Rev 3 page 2/18 RHRDAC121 Functional description Table 1.
