adc121c021eb National Semiconductor Corporation, adc121c021eb Datasheet - Page 26

• Manufacturer Part Number: adc121c021eb
• Description: Adc121c021/adc121c027 I2c-compatible, 12-bit Analog-to-digital Converter With Alert
• Manufacturer: National Semiconductor Corporation

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1.11 QUIET INTERFACE MODE
To improve performance at High Speed, operate the ADC in
Quiet Interface Mode. This mode provides improved INL and
DNL performance in I
face mode provides a maximum throughput rate of 162ksps.
Figure 17
in this mode. Basically, the Master needs to release SCL for
describes how to read the conversion result register
2
C Hs-Mode (3.4MHz). The Quiet Inter-
FIGURE 16. (b) Typical Write to a 2-Byte ADC Register
FIGURE 17. Reading in Quiet Interface Mode
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at least 1µs before the MSB of every upper data byte. The
diagram assumes that the address pointer register is set to
its default value.
Quiet Interface mode will only improve INL and DNL perfor-
mance in Hs-Mode. Standard and Fast mode performance is
unaffected by the Quiet Interface mode.
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