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2.3 Power-Supply Connections
The PGA849EVM uses two sets of voltage supplies: input stage and output stage. The device operates using
input-stage power supplies from ±4V (8V) to ±18V (36V) and output-stage power supplies from ±2.25V (4.5V) to
±18V (36V). The output-stage supply voltage must not exceed the input-stage supply voltage.
The input-stage power-supply connections for the PGA849EVM are provided through connector J13 at the top
of the EVM. The input-stage positive power-supply connection is labeled +VCC, the negative power-supply
connection is labeled –VEE, and the ground connection is labeled GND. To connect power to the PGA849EVM,
insert wires into each terminal of J13 and then tighten the screws to make the connection.
the pin definition for supply connector J1 and the allowed voltage range for each supply connection.
Connector Pin
Number
J13.3
J13.2
J13.1
J14.1
J14.2
J14.3
J14.4
By default, the output-stage supply-voltage levels (+LVDD and –LVSS) are set to the PGA849 positive (+VCC)
and negative (–VEE) supplies, respectively. The +LVDD pin is connected to +VCC through jumper J9 1-2, and
the –LVSS pin is connected to –VEE through J16 1-2. Screw terminal connector J14 provides access to the
output-stage supply pins. To set the voltage level of LVDD and LVSS with an external supply, shunt jumper J9
2-3 to access the +LVDD using connector J14.1. In a similar fashion, shunt jumper J16 2-3 to access the –LVSS
pin using connector J14.3.
SBOU315 – MARCH 2024
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Table 2-2. PGA849EVM Supply-Range Specifications
Supply Connection
Input-stage positive supply
(+VCC)
Ground
Negative supply (–VEE)
LVDD+_ext
Ground
LVSS–_ext
Ground
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Voltage Range
Single supply, V
= +VCC: 8V to 36V
S
Dual supply, V
= (+VCC) – (–VEE): 4V to 18V
S
0V
Single supply, V
= +VCC: 0V (GND)
S
Dual supply, V
= (+VCC) – (–VEE): –4 V to –18 V
S
Single supply, LVDD+_ext: 4.5V to 36V
Dual supply, output stage supply (LVSS+) – (LVSS–):
2.25V to 18V
0V
Single supply, LVSS–_ext: 0V (GND)
Dual supply, output stage supply (LVSS+) – (LVSS–):
–2.25V to –18V
0V
Hardware
Table 2-2
summarizes
PGA849 Evaluation Module
5
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