The document introduces a Quad Channel, 16-bit, serial input DAC product with dynamic power control and HART connectivity. The product features 16-bit resolution and monotonicity, dynamic power control for thermal management, current and voltage output pins connectable to a single terminal, programmable current output ranges and voltage output ranges, programmable offset and gain, on-chip diagnostics, and on-chip reference.
The AD5755-1 is a quad‑channel, 16‑bit digital‑to‑analog converter that provides both voltage and current outputs. It operates from a wide supply range (‑26.4 V to +33 V) and includes on‑chip dynamic power control to minimize dissipation in current mode. The device features a versatile 3‑wire serial interface compatible with SPI, QSPI, Microwire, DSP, and microcontroller standards, with optional CRC‑8 error checking and a watchdog timer.
Key features include HART‑compatible CHART pins for process control applications, user‑programmable offset and gain, on‑chip reference (10 ppm/°C), and operation over –40 °C to +105 °C. Detailed specifications cover voltage and current output ranges, accuracy, noise, and power‑supply requirements.
| Resolution | 16 Bits |
|---|---|
| Voltage Output Ranges | 0‑5 V, 0‑10 V, ±5 V, ±10 V |
| Current Output Ranges | 0‑24 mA, 0‑20 mA, 4‑20 mA |
| Total Unadjusted Error (Voltage, Unipolar) | ±0.04 % FSR |
| Operating Temperature Range | –40 °C to +105 °C |
| Supply Voltage Range | –26.4 V to +33 V |
| On‑chip Reference Accuracy | 10 ppm/°C |
The AD5755-1 provides 16‑bit resolution.
It supports 0‑5 V, 0‑10 V, ±5 V, and ±10 V output ranges.
Yes, each channel has a CHART pin that allows HART signals to be coupled onto the current output.
The device is rated for –40 °C to +105 °C.