M41T00AUDD1E STMICROELECTRONICS [STMicroelectronics], M41T00AUDD1E Datasheet - Page 32

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M41T00AUDD1E

Manufacturer Part Number
M41T00AUDD1E
Description
Serial real-time clock with audio
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet

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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±1dB of the case when
GAIN=Bh, one step below. If GAIN=Bh tests to -0.5dB, then GAIN=Ch is tested to have an
end-to-end gain of 2.5±1dB. If GAIN=Bh tests to +0.5dB, then GAIN=Ch is tested to be
3.5±1dB.
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 3dB 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 ±2dB of the typical gain
values listed in
Wake-up time: T
When the device powers on, the bypass capacitor C
As 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, table 15, for C
BIAS
as 3±1dB. For any gain setting in
is directly linked to the bias of the amplifier, the amplifier will not work properly until
Table
7.
WU
Table
7, the next higher (or lower) setting is
BIAS
will not be charged immediately.
BIAS
= 1
μ
F.
WU

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