LHD5755 - 1 is a four - channel digital - to - analog converter (DAC) that offers both voltage and current outputs. It operates with a power supply ranging from - 26V to + 33V. The on - chip dynamic power control feature, based on a DC - DC boost converter optimized for minimum on - chip power consumption, can adjust the voltage of the output driver within the range of 7.4V to 29.5V in current mode, minimizing power dissipation. Each channel has a corresponding CHART pin, enabling the HART signal to be coupled to the current output of LHD5755 - 1.
This device is equipped with a multifunctional three - wire serial interface. It can operate at a maximum clock rate of 30 MHz and is compatible with standard interfaces such as SPI, QSPIT, MICROWIRE™, DSP, and microcontroller interface standards. The interface also provides an optional CRC - 8 packet error checking function and a watchdog timer for monitoring interface activities. The rated operating temperature range of LHD5755 - 1 is from - 40°C to + 105°C, and it comes in a 64 - pin, 9mmx9mm QFN package.
Product Features
- 16 - bit resolution with monotonicity.
- Dynamic power control reduces heat generation.
- Current and voltage output pins can be connected to one pin. The current output range includes 0 mA to 20 mA, 4 mA to 20 mA, or 0 mA to 24 mA, with a total unadjustable error (TUE) of ±0.05% (maximum).
- The voltage output range (including 20% over - range) covers 0V to 5V, 0V to 10V, ±5V, and ±10V, with a total unadjustable error (TUE) of ±0.05% (maximum).
- User - programmable offset and gain.
- On - chip diagnostic capabilities.
- On - chip reference voltage source (±10 ppm/°C, maximum).
- Operating temperature range: - 40°C to + 105°C.
Product Applications
- Process control.
- Actuator control.
- Programmable logic controllers (PLCS).
- HART network connection.
Measured Data
- Voltage Output DAC Integral Non - linearity (DC - DC On)
- Voltage Output DAC Differential Non - linearity (DC - DC On)
- Current Output DAC Integral Non - linearity (DC - DC On)
- Current Output DAC Differential Non - linearity (DC - DC On)
- On - Chip Reference Temperature Drift
- VBOOST Efficiency vs. Current Output
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