Datasheet

EVAL-AD1940AZ Preliminary Technical Data
Rev. PrA | Page 16 of 30
POWER SUPPLIES AND RESET
5 to 6 Volts, >700mA
3.3V Digital Supply
Linear Regulators
3.3V Analog Supply
Reset Generator
Master Reset Switch
Reset Threshold = 3.08V
R13
604r
R14
604r
1
A
2
K
D2
RED
12
D3
GREEN
KA
D4
TP48
VIN+
L5
2 1 3
J14
Coax Power Jack
3
IN
2
OUT
1
GND
4
OUT
U5
ADP3339-3.3V
C47 1.0uF
C48 1.0uF
TP49 TP50
3
IN
2
OUT
1
GND
4
OUT
U6
ADP3339-3.3V
C49 1.0uF
C50 1.0uF
TP51
TP52
C61
SW2
R15
4
VCC
3
MR
1
GND
2
RESET
U17
ADM811TARTZ
+
C179 100uF 16V
A3V3
D3V3
RESET
D3V3
D3V3
REGVIN
DC-IN
Figure 20. Power Supplies and Reset Schematics