M41T00AUD_12 STMICROELECTRONICS [STMicroelectronics], M41T00AUD_12 Datasheet - Page 31

• Manufacturer Part Number: M41T00AUD_12
• Description: Serial real-time clock (RTC) with audio
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M41T00AUD
7.2
The other parameter pertains to the gain step size, a relative measurement. It is shown in
Table 16
guaranteed to be between 2 and 4 dB higher (or lower). For example, even though no upper
and lower limits are shown for GAIN = Ch, it is tested to be at 3±1 dB of the case when
GAIN=Bh, one step below. If GAIN=Bh tests to -0.5 dB, then GAIN=Ch is tested to have an
end-to-end gain of 2.5±1 dB. If GAIN=Bh tests to +0.5 dB, then GAIN=Ch is tested to be
3.5±1 dB.
This applies to all steps except the lowest one (from GAIN=0 to GAIN=1) which is not tested.
In summary, for GAIN=1 to GAIN=Fh, all steps are tested to have a 1dB step size tolerance
of the listed 3 dB step size. The unity gain setting, Bh, will have an end-to-end gain of
0±1dB while the three levels for GAIN=4, 5 and Eh are tested to be within ±2 dB of the
typical gain values listed in
Wake-up time: T
When the device powers on, the bypass capacitor C
C
the capacitor is charged. The time to reach this voltage is called the wake-up time or T
and is specified in the electrical characteristics,
BIAS
is directly linked to the bias of the amplifier, the amplifier will not work properly until
as 3±1 dB. For any gain setting in
WU
Table
Doc ID 13480 Rev 5
7.
Table
Table
7, the next higher (or lower) setting is
BIAS
16, for C
will not be charged immediately. As
BIAS
Audio section operation
= 1 µF.
WU
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