v 20080110 1
C 48300 42000 0 0 0 title-A2.sym
C 54700 52300 1 0 0 in-1.sym
{
T 54700 52600 5 10 1 1 0 0 1
refdes=usb_power
T 54700 52600 5 10 0 0 0 0 1
device=INPUT
}
C 54700 51600 1 0 0 in-1.sym
{
T 54700 51900 5 10 1 1 0 0 1
refdes=jtag_power
T 54700 51900 5 10 0 0 0 0 1
device=INPUT
}
C 61000 51000 1 0 0 max882.sym
{
T 62500 53200 5 10 1 1 0 0 1
refdes=U30
T 61800 52200 5 10 0 1 0 0 1
device=MAX882
T 61900 51800 5 10 0 1 0 0 1
footprint=SO8
}
C 64100 51900 1 0 0 3.3V-plus-1.sym
C 61800 49200 1 0 0 gnd-1.sym
C 63300 51400 1 270 0 capacitor-2.sym
{
T 63800 51000 5 10 1 1 0 0 1
refdes=C32
T 63600 50700 5 10 1 1 0 0 1
value=2.2u
T 63300 51400 5 10 0 1 0 0 1
footprint=sm1206
T 63500 52100 5 10 0 0 0 0 1
device=POLARIZED_CAPACITOR
T 63500 52300 5 10 0 0 0 0 1
symversion=0.1
}
C 58700 51300 1 270 0 capacitor-2.sym
{
T 59200 50900 5 10 1 1 0 0 1
refdes=C31
T 59000 50600 5 10 1 1 0 0 1
value=2.2u
T 58700 51300 5 10 0 1 0 0 1
footprint=sm1206
T 58900 52000 5 10 0 0 0 0 1
device=POLARIZED_CAPACITOR
T 58900 52200 5 10 0 0 0 0 1
symversion=0.1
}
N 63100 51800 64300 51800 4
N 64300 51800 64300 51900 4
N 63500 51800 63500 51400 4
N 58900 51300 58900 52400 4
N 58000 50000 63500 50000 4
N 63500 50000 63500 50500 4
N 58900 50000 58900 50400 4
N 61600 51000 61600 50000 4
N 62100 51000 62100 50000 4
N 61900 49500 61900 50000 4
C 55800 52300 1 0 0 resistor-2.sym
{
T 56000 52600 5 10 1 1 0 0 1
refdes=R30
T 56200 52100 5 10 1 1 0 0 1
value=0
T 56500 52600 5 10 0 1 0 0 1
footprint=sm0805
T 56200 52650 5 10 0 0 0 0 1
device=RESISTOR
}
C 55800 51600 1 0 0 resistor-2.sym
{
T 56000 51900 5 10 1 1 0 0 1
refdes=R31
T 56200 51400 5 10 1 1 0 0 1
value=0
T 56400 51900 5 10 0 1 0 0 1
footprint=sm0805
T 56200 51950 5 10 0 0 0 0 1
device=RESISTOR
}
N 61000 52400 56700 52400 4
N 61000 52800 60000 52800 4
N 55800 51700 55300 51700 4
N 55800 52400 55300 52400 4
C 57800 51300 1 270 0 capacitor-1.sym
{
T 58300 50900 5 10 1 1 0 0 1
refdes=C30
T 58100 50600 5 10 1 1 0 0 1
value=100n
T 57800 51300 5 10 0 1 0 0 1
footprint=sm1206
T 58000 52000 5 10 0 0 0 0 1
device=CAPACITOR
T 58000 52200 5 10 0 0 0 0 1
symversion=0.1
}
N 58000 50000 58000 50400 4
N 58000 51300 58000 52400 4
N 57000 52400 57000 51700 4
N 57000 51700 56700 51700 4
T 65700 42900 9 20 1 0 0 0 1
gTAG - Power Supply Unit
T 64600 42400 9 10 1 0 0 0 1
gTAG-psu.sch
T 64600 42100 9 10 1 0 0 0 1
4
T 66100 42100 9 10 1 0 0 0 1
5
T 68600 42400 9 10 1 0 0 0 1
$Revision$
T 68600 42100 9 10 1 0 0 0 1
Stefan Petersen (spe@stacken.kth.se)
N 62300 51000 62300 50000 4
C 48600 42200 1 0 0 copyleft.sym
{
T 50900 45400 5 10 0 0 0 0 1
device=none
}
C 60100 50300 1 90 0 resistor-2.sym
{
T 60200 50800 5 10 1 1 0 0 1
refdes=R33
T 60200 50500 5 10 1 1 0 0 1
value=39k
T 60000 50700 5 10 0 1 0 0 1
footprint=sm0805
T 60500 50650 5 10 0 0 0 0 1
device=RESISTOR
}
C 60100 51400 1 90 0 resistor-2.sym
{
T 60200 51900 5 10 1 1 0 0 1
refdes=R32
T 60200 51600 5 10 1 1 0 0 1
value=100k
T 60200 51800 5 10 0 1 0 0 1
footprint=sm0805
T 60500 51750 5 10 0 0 0 0 1
device=RESISTOR
}
N 61000 51700 60800 51700 4
N 60800 51700 60800 51300 4
N 60800 51300 60000 51300 4
N 60000 51200 60000 51400 4
N 60000 50300 60000 50000 4
N 60000 52300 60000 52400 4
N 60000 52400 60000 52800 4
C 64200 52600 1 90 0 resistor-2.sym
{
T 64300 53200 5 10 1 1 0 0 1
refdes=R34
T 64300 52800 5 10 1 1 0 0 1
value=10k
T 64200 52900 5 10 0 1 0 0 1
footprint=sm0805
T 64600 52950 5 10 0 0 0 0 1
device=RESISTOR
}
C 65000 52300 1 0 0 out-1.sym
{
T 65000 52600 5 10 1 1 0 0 1
refdes=pon_reset#
T 65000 52600 5 10 0 0 0 0 1
device=OUTPUT
}
C 63900 53700 1 0 0 3.3V-plus-1.sym
N 63100 52400 65000 52400 4
N 64100 52600 64100 52400 4
N 64100 53500 64100 53700 4
T 58400 49400 9 10 1 0 0 0 1
"low-bat" voltage is calculated
T 58400 49200 9 10 1 0 0 0 1
according to the following formula:
T 58400 48800 9 10 1 0 0 0 1
Vlo = Vlbi*((R32+R33)/R33), where Vlbi is 1.2V
T 58400 48400 9 10 1 0 0 0 1
Here: Vlo = 1.2*139/39 = 4.3V