MIL-M-38510-121 Microcircuits, Linear Monolithic And Multichip, Silicon 12 Bit Digital-To-Analog ConvertersThis specification covers the detail requirements for monolithic silicon, bipolar, interface, memory core drivers. Two product assurance classes and a choice of case outlines and lead finishes are provided and are reflected in the complete part number. For this product, the requirements of MIL-M-38510 have been superseded by MIL-PRF-38535, see 6.3

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MIL-M-38510/121A

Major carry (MG):                                                                  A major carry (transition) is the output level change corresponding to the input transition between the digital code word defined by turning one bit on and all other bits off and the preceding adjacent digital code word.  There are "N" such transitions for an

N-bit converter.

Major carry error (MGE):                                                       The differential linearity error between the output levels corresponding to the digital code word defined by turning one bit on and all other bits off and the preceding adjacent digital code word.  It is expressed in LSB.

Monotonicity:                                                                         A DAG transfer function is monotonic if the ratio of the incremental change in the input does not change sign over the entire full-scale output range.

Most significant bit (MSB):                                                    That bit of the digital code word that causes the most change to the output level.  When the MSB changes state, the output level changes by one-half of the full-scale output range.

Offset:                                                                                   The output voltage for an input code of all zeros.

Offset binary code:                                                               The natural binary code representing the full-scale range but offset by one-half of the full-scale range.  Offset binary code represents analog values between minus full-scale at all zeros, to plus full-scale for all ones, with the MSB turned on at analog zero.

Output compliance voltage range:                                        The range of output voltages over which a current output DAG

can operate within a specified error band.

Power supply sensitivity at full-scale (PSS):                          The change in the full-scale output level with a change in the power supply voltage.  It is generally expressed in mV/%.

Resolution:                                                                            The smallest ideal increment between two adjacent output levels over the full-scale range of the converter.

Settling time:                                                                         The elapsed time from the application of a full-scale step input to the DAG to the time when the output has entered and remained within a ½ LSB error band around its final value.

End-point linearity error:                                                       The difference between the actual output level and the ideal output level for the same digital code word input after any rotation or translation to make the actual and the ideal zero and full-scale end-points coincide.

Unipolar mode:                                                                     The converter operation mode that includes output voltages or currents of one polarity only.

Zero scale current (IZS):                                                        The output current with the device operating in the unipolar current output mode and with the digital inputs at zero.  It is expressed in LSB.

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