The LTC1588/LTC1589/LTC1592 are serial input 12-/14- /16-bit multiplying current output DACs that operates from a single 5V supply. These SoftSpanTM DACs can be software-programmed for either unipolar or bipolar mode through a 3-wire SPI interface. In either mode, the voltage output range can also be software-programmed. Two output ranges in unipolar mode and four output ranges in bipolar mode are available. INL and DNL are accurate to 1LSB over the industrial temperature range in both unipolar and bipolar modes. True 16-bit 4-quadrant multiplication is achieved with on-chip four quadrant multiplication resistors. The LTC1588/LTC1589/LTC1592 are available in a 16-lead SSOP package. These devices include an internal deglitcher circuit that reduces the glitch impulse to less than 2nV-s (typ). The asynchronous clear pin resets the LTC1588/LTC1589/ LTC1592 to 0V in unipolar or bipolar mode.
The LTC1588, LTC1589, and LTC1592 are serial‑input multiplying current‑output DACs that operate from a single 5 V supply. They provide six programmable output ranges: two unipolar (0‑5 V, 0‑10 V) and four bipolar (+5 V, +10 V, +2.5 V, –2.5 V to 7.5 V). The devices feature a glitch impulse of less than 2 nV‑s, power‑on reset to OV, and an asynchronous clear pin.
The datasheet includes absolute maximum ratings, electrical characteristics (resolution, INL/DNL, gain error, supply current), pin descriptions, a block diagram, package dimensions for the 16‑lead plastic SSOP, and typical performance graphs for linearity and settling time. Optional circuit examples for 2‑wire and 3‑wire SPI interfaces are also provided.
| Resolution | 12/14/16 bits |
|---|---|
| Supply Voltage (VCC) | 4.5 V to 5.5 V |
| Supply Current (Digital Inputs) | 10 pA |
| Glitch Impulse | < 2 nV‑s |
| Programmable Output Ranges | Six (2 unipolar, 4 bipolar) |
| Package | 16‑lead plastic SSOP |
The device supports six programmable output ranges: two unipolar and four bipolar.
The typical glitch impulse is less than 2 nV‑s.
VEC must be between 4.5 V and 5.5 V.
The devices provide 12‑, 14‑, or 16‑bit resolution.