The LTC2607/LTC2617/LTC2627 are dual 16-, 14- and 12-bit, 2.7V to 5.5V rail-to-rail voltage output DACs in a 12-lead DFN package. They have built-in high performance output buffers and are guaranteed monotonic. These parts establish new board-density benchmarks for 16- and 14-bit DACs and advance performance standards for output drive and load regulation in single-supply, voltage-output DACs. The parts use a 2-wire, I2C compatible serial interface. The LTC2607/LTC2617/LTC2627 operate in both the standard mode (clock rate of 100kHz) and the fast mode (clock rate of 400kHz). An asynchronous DAC update pin (LDAC) is also included. The LTC2607/LTC2617/LTC2627 incorporate a power-on reset circuit. During power-up, the voltage outputs rise less than 10mV above zero scale; and after power-up, they stay at zero scale until a valid write and update take place. The power-on reset circuit resets the LTC2607-1/LTC2617-1/ LTC2627-1 to midscale. The voltage outputs stay at midscale until a valid write and update takes place.
The LTC2607, LTC2617 and LTC2627 are dual‑channel DACs offered in a 12‑lead DFN package. They provide 16‑, 14‑ and 12‑bit resolution respectively, operate from 2.7 V to 5.5 V, and feature built‑in high‑performance output buffers guaranteeing monotonic operation.
The devices support both standard (100 kHz) and fast (400 kHz) I²C modes, include an asynchronous update pin (LDAC), and offer 27 selectable I²C addresses. Power‑down current is as low as 1 µA, while typical supply current is 260 µA per DAC at 3 V. Output drive is ±15 mA with ultralow crosstalk (30 µV).
| Resolution | 16‑bit (LTC2607), 14‑bit (LTC2617), 12‑bit (LTC2627) |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V |
| Power‑Down Current | ≤ 1 µA |
| Typical Supply Current | 260 µA per DAC at 3 V |
| Output Drive Capability | ±15 mA (minimum) |
| I²C Clock Rates | Standard 100 kHz, Fast 400 kHz |
| Selectable I²C Addresses | 27 |
| Crosstalk | 30 µV |
The devices operate in standard mode at 100 kHz and in fast mode at 400 kHz.
Each part provides 27 selectable I²C slave addresses.
The DACs can be powered down to a maximum of 1 µA.
Typical supply current is 260 µA per DAC when powered at 3 V.