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COP8-REF-AM Datasheet(PDF) 56 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # COP8-REF-AM
Description  8-Bit CMOS Flash Microcontroller with 8k Memory, Dual Op Amps, Virtual EEROM, Temperature Sensor,10-Bit A/D and Brownout Reset
PDF  83 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

COP8-REF-AM Datasheet(HTML) 56 Page - National Semiconductor (TI)

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17.0 Stand-Alone Amplifier
A stand-alone Amplifier, AMP1, is provided on Port B. It
supports rail-to-rail inputs and outputs, and operates over
the entire V
CC and temperature range. This amplifier is in
addition to the programmable gain amplifier in the A/D Con-
verter. It is an alternate function on Port B.
It is enabled/disabled by the ENAMP1 bit in the ADGAIN
register described in the A/D Converter section. The normal
port B3–B5 pins should be configured in their high Z state
when using AMP1. It is disabled after Reset. The circuit will
only draw current when it’s enabled. When disabled, the
current drawn is extremely low.
When using the HALT mode of the device, AMP1 will draw
current unless it is disabled by software. Therefore, for mini-
mal current in HALT mode, AMP1 should be disabled prior to
entering HALT.
The electrical parameters of AMP1 are shown in the Electri-
cal Characteristics section.
17.1 BLOCK DIAGRAM
20006359
FIGURE 30. Amplifier1 Block Diagram
www.national.com
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