ADC121C021CIMKX NSC [National Semiconductor], ADC121C021CIMKX Datasheet - Page 9

• Manufacturer Part Number: ADC121C021CIMKX
• Description: I2C-Compatible, 12-Bit Analog-to-Digital Converter (ADC) with Alert Function
• Manufacturer: NSC [National Semiconductor]

Note 7: The inputs are protected as shown below. Input voltage magnitudes up to 5.5V, regardless of V
, will not cause errors in the conversion result. For
A
example, if V
is 3V, the digital input pins can be driven with a 5V logic device.
A
30020904
Note 8: To guarantee accuracy, it is required that V
be well bypassed and free of noise.
A
Note 9: Typical figures are at T
= 25°C, and represent most likely parametric norms. Test limits are guaranteed to National's AOQL (Average Outgoing Quality
J
Level).
Note 10: This parameter is guaranteed by design and/or characterization and is not tested in production.
Note 11: Spike suppression filtering on SCL and SDA will supress spikes that are less than 50ns for standard and fast modes, and less than 10ns for hs-mode.
Note 12: C
refers to the capacitance of one bus line. C
is expressed in pF units.
b
b
Note 13: The ADC will meet Minimum/Maximum specifications for f
up to 3.4MHz and V
= 2.7V to 3.6V when operating in the Quiet Interface Mode (Section
SCL
A
1.11).
Note 14: The ADC121C021 will provide a minimum data hold time of 300ns to comply with the I
2
C Specification.
Timing Diagrams
30020960
FIGURE 1. Serial Timing Diagram
9
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