ADC12034 National Semiconductor Corporation, ADC12034 Datasheet - Page 11

• Manufacturer Part Number: ADC12034
• Description: Self-calibrating 12-bit Plus Sign Serial I/o A/d Converters With Mux And Sample/hold
• Manufacturer: National Semiconductor Corporation

Note 17: Timing specifications are tested at the TTL logic levels, V
= 0.4V for a falling edge and V
= 2.4V for a rising edge. TRI-STATE output voltage is forced
IL
IH
to 1.4V.
Note 18: The ADC12030 family's self-calibration technique ensures linearity and offset errors as specified, but noise inherent in the self-calibration process will
result in a maximum repeatability uncertainty of 0.2 LSB.
Note 19: If SCLK and CCLK are driven from the same clock source, then t
is 6, 10, 18 or 34 clock periods minimum and maximum.
A
Note 20: The “12-Bit Conversion of Offset” and “12-Bit Conversion of Full-Scale” modes are intended to test the functionality of the device. Therefore, the output
data from these modes are not an indication of the accuracy of a conversion result.
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FIGURE 1. Transfer Characteristic
1135411
FIGURE 2. Simplified Error Curve vs. Output Code without Auto-Calibration or Auto-Zero Cycles
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