1. LTC1293/LTC1294/LTC1296 Digital-to-Analog Converter (DAC) - Electrical Characteristics

This section outlines electrical specifications for the LTC1293, LTC1294, and LTC1296, encompassing different operating conditions and voltage levels.

Table Highlights:

️· Input/Output Voltages (VIH, VIL): Specifies high and low input voltage levels for digital inputs.
️· Input Currents (IIH, IIL): Defines high and low input currents for digital inputs.
️· Output Voltage Levels (VOH, VOL): Details high and low output voltage levels for digital outputs.
️· Output Leakage Current (IOZ): Specifies the leakage current when the output is in a high-impedance state.
️· Source/Sink Current (ISOURCE, ISINK): Defines the maximum source and sink currents the output can deliver.
️· Supply Currents (ICC, IREF, I–): Shows the positive supply current (ICC) for both normal and power-down mode, reference current (IREF), and negative supply current (I–).
️· SSO Current (ISOURCEs, ISINKs): Shows source and sink currents for the SSO output.

Notes
️· Absolute maximum ratings are provided, beyond which the device’s life might be impaired.
️· Voltages are referenced to DGND, AGND, and REF [– ] tied together.
️· Specifications apply over the full operating temperature range unless otherwise stated.
️· Notes about input voltage ranges and diode behavior are given, particularly concerning operation at low VCC levels (4.5V).

2. Digital Electrical Characteristics (Continued)

Further detailing digital electrical characteristics, with focus on specific parameters related to digital signal integrity and power consumption.

Table Highlights

️· Input/Output Voltages and Currents: Similar to the previous section, but with specific values.
️· Supply Current (ICC): Detailed specifications for various modes, including power-down.
️· Reference Current (IREF): Describes the reference current.
️· Negative Supply Current (I–): Describes the negative supply current.

3. Summary of Notes and Key Points (Referenced Throughout the Text)

️· Note 5 (Bipolar Mode): In bipolar mode, the least significant bit (LSB) is defined by the input span (2VREF) divided by 4096. Example given when VREF=5V, 1 LSB (bipolar) = 2.44mV.
️· Note 7 (Diode Behavior): The input diodes connected to reference and analog inputs will conduct if voltages are too low or too high. This is particularly important to consider when operating at low VCC. The allowable range is limited to 50mV beyond supply voltage to avoid code errors.

Overall Summary: