MAX195EVKIT-DIP Maxim Integrated, MAX195EVKIT-DIP Datasheet - Page 8

• Manufacturer Part Number: MAX195EVKIT-DIP
• Description: Data Conversion IC Development Tools Programmers, Development Systems
• Manufacturer: Maxim Integrated
• Series: MAX195r

Specifications of MAX195EVKIT-DIP

• Interface Type: QSPI, Serial (SPI, Microwire)
• Factory Pack Quantity: 1

The MAX194 evaluation board generates its own high-
quality power supplies from a single DC input (8V to
20V), such as a plug-in wall transformer. When the
MAX194 evaluation board is connected to the 68HC16
µC module, the µC module uses the unregulated input
supply to generate its own separate +5V digital supply.
U6 converts the unfiltered input down to +5V to provide
the VDDA analog supply. Current spikes from the digi-
tal supply VDDD are attenuated by R1. Schottky diode
D1 protects the device substrate. U7 inverts the +12V
to -12V, and U3 regulates the -12V to -5V, providing the
VSSA analog supply.
To measure the supply current drawn by the MAX194,
turn off the power and prepare the board by carefully
cutting the traces at IS1, IS2, IS3, and IS4, and
installing 2-pin headers and shunts (see Table 8).
MAX194 Evaluation System/Evaluation Kit
8
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Measuring Supply Current
Each supply may be measured by replacing the corre-
sponding shunt with a current-meter connection. For
example, to measure the current drawn by the +5V dig-
ital supply, replace the shunt at IS4 with a current
meter. The direction of current flow is marked with
arrows on the silkscreen. Do not connect or disconnect
the current meter while the power is on.
After observing supply current in operating and shut-
down modes, the board may be restored by installing
shunts at IS1–IS4.
Table 8. Current-Sense Jumpers
JUMPER
IS1
IS2
IS3
IS4
POWER SUPPLY
VDDD
VDDA
VSSA
VSSD
DESCRIPTION
Analog +5V
Analog -5V
Digital +5V
Digital -5V