Z8F16800144ZCOG Zilog, Z8F16800144ZCOG Datasheet - Page 203
Z8F16800144ZCOG
Manufacturer Part Number
Z8F16800144ZCOG
Description
KIT DEV FOR Z8F642 MCU 44 PIN
Manufacturer
Zilog
Series
Z8 Encore!®r
Type
MCUr
Specifications of Z8F16800144ZCOG
Contents
Hardware, Software and Documentation
For Use With/related Products
Z8F642
For Use With
269-4661 - KIT ACC ETHERNET SMART CABLE
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
269-4678
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Low-Power Operational Amplifier
PS025011-1010
Note:
The low-power operational amplifier is a standard operational amplifier designed for
current measurements. Each of the three ports of the amplifier is accessible from the
package pins. The inverting input is commonly used to connect to the current source. The
output node connects an external feedback network to the inverting input. The
non-inverting output is required to apply a non-zero bias point. In a standard
single-supply system, this bias point must be substantially above ground to measure
positive input currents. The non-inverting input may also be used for offset correction.
This is a voltage gain operational amplifier. Its transimpedance nature is determined by
the feedback network.
The low-power operational amplifier contains only one pin configuration; ANA0 is the
output/feedback node, ANA1 is the inverting input and ANA2 is the non-inverting input.
To use the low-power operational amplifier, it must be enabled in the
Power Control Register Definitions
tional amplifier is OFF. To use the low-power operational amplifier, the TRAM bit must
be cleared, turning it ON
ADC measurements on ANA0 (not transimpedance measurements), the TRAM bit must
be OFF. Turning the TRAM bit ON interferes with normal ADC measurements. Finally,
this bit enables the amplifier even in STOP mode. If the amplifier is not required in STOP
mode, disable it. Failing to perform this results in STOP mode currents greater than speci-
fied.
As with other ADC measurements, any pins used for analog purposes must be configured
as in the GPIO registers (see
Standard transimpedance measurements are made on ANA0 as selected by the
ANAIN[3:0] bits of
gle-ended measurements on ANA1 and ANA2 when the amplifier is enabled which is
often useful for determining offset conditions.
ADC Control Register 0
(Power Control Register 0
P R E L I M I N A R Y
Port A–E Alternate Function Subregisters
on page 47. The default state of the low-power opera-
on page 184. It is also possible to make sin-
on page 47). When making normal
Z8 Encore! XP
Low-Power Operational Amplifier
Product Specification
on page 64).
®
F1680 Series
189
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