Welch Allyn Atlas - Page 2

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
A/D Mux
Zero Adjust
+/-20mmHg range
PWM A/D
Converter
0mmHG = 0.5V
300mmHG = 4.0V
PWM D/A
76.8KHz
Primary
Transducer
NIBP
PWM A/D
Converter
Zero
Offset
Safety
Transducer
Over Pressure
Fault Circuit
620017.dsn
Rick Myers
Rick Myers
Mar 5, 1999
Mar 5, 1999
3/15/99JAC5-39121 LPP
L. Phillips
Z. Psenicnik
J. Bello
3/16/99
3/16/99
3/16/99
B See ECN worksheet
D
Improvements for ESD, RFI,
and Fast Transients, Correct
Respiration Diff-Amp Topology
5-39455 LPP 4/27/99 LPP
6/24/995-39821 LPP
E
Mods to U2 clock line, Resp
gain amp, ECG supply and
NVRAM pullup
7/9/99LPP5-39936
LPP
REV
Description
ECN/ECO Init
Date Ckd
A Release to Production
620017 E
NIBP ELECTRONICS
C
2
8Tuesday, July 13, 1999
Title
Size
Document Number
Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
D201-C
U208-2
U210-7
U204-7
U204-5
U203-3
U203-5
C207-1
U204-3
U204-2
U205-7
U206-6
U206-1
P202-Out-
U206-7
U206-2
U202-3
P202-2
P202-5
U202-5
U208-1
u207-9
PrimaryPres
P4.25V
SafetyPres
U208-3
P201-Out
P201-6
U204-1
U208-7
U209-Out
U203-6
P202-Out+
U210-2
U210-3
U203-2
Q201-B
P.75V
+5V/2
U205-3
Q202-G
Pump-
Pump+
D201-A
Valve-
Valve+
U207-3
P201-pwr
NIBP-Offset-DAC
NIBP-ADC-Clock
P+.75V
NIBP-Safety
NIBP-PWM-ADC
P+12V
5VRef
NIBP-Overpressure
NIBP-15mmHg
Print-Temp
NIBP-A/D-SelB
+12V
+3.3V
+5V
P+.75V
NIBP-A/D-SelA
NIBP-A/D-SelC
BattCurrent
BattVoltage
+5V +Vpump
NIBP-Pump-OnNIBP-Valve-Close
P+5V
P+5V
P+5V
P+5V
P+5V
P+5V
P+5V
P+5V
P+5V
P+12V
P+12V
P+12V
P+12V
P+12V
+3.3V
+3.3V
P+12V
P+12V
P+12V
P+12V
P+12V
P+12V
+12V
P+12V
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
AA
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
AA
A
A
A
A
+
-
U203A
LM393
3
2
1
84
C215
.047uF
+
-
U202A
MC34072
3
2
1
84
C225
.047uF
C224
1000pF
U201
78L05
8 1
2 3 6 7
IN OUT
GND GND GND GND
TP214
R233
3.48K
+
-
U208A
MC34072
3
2
1
84
TP206
R221
3.16K
C213
.01uF
R232
10K
R230
10K
+ C202
4.7uF
R242
10K
C222
.01uF
+
-
U205B
MC34072
5
6
7
84
R231
73.2K
TP217
Q201
MMBT3904L
3
1
2
+
-
U206B
MC34072
5
6
7
84
C223
.01uF
TP225
D202
BAV99L
1
3
2
R240
10K
R235
3.48K
R229
1.96K
+
-
U203B
LM393
5
6
7
84
R241
10K
R237
464K
D201
MMBD1503A
1
3
2
L201
220uH
TP228
C220
.01uF
R243
100K
Gain
and
Comp
XFPM-050KPGR-P1
P201
1
2
3
6
+
-
U202B
MC34072
5
6
7
84
TP207
U207B
74HCT00
4
5
6
147
TP231
TP210
C232
.047uF
+
-
U210
MAX941
2
3
6 1
4
7
5
C201
.047uF
TP211
TP201
TP204
+ C229
10uF
TP237
C212
680pF
TP240
TP232
C221
.047uF
Q202
MMDF2N02E
8
1
2
5 6 7
3
4
TP234
C205
.047uF
R214
10K
C209
.047uF
TP226
R219
1.96K
C211
.047uF
R246
31.6
C226
.047uF
C216
.047uF
R215
100K
C231
.01uF
U207A
74HCT00
1
2
3
147
C204
.047uF
TP221
C227
680pF
TP222
+ C207
1uF
R216
19.6K
+
-
U204B
MC34072
5
6
7
84
R239
1K
R201
576
+ C208
1uF
+
-
U204A
MC34072
3
2
1
84
C203
.047uF
TP235
TP224
R203
3.32K
R205
750
C210
.047uF
TP212
TP208
R244
21.5K
TP213
C206
.047uF
TP215
TP220
L202
Bead
+
-
U208B
MC34072
5
6
7
84
R227
5.11K
R236
3.83K
J201
CON5
1
2
3
4
5
TP219
R223
21.5K
U207C
74HCT00
9
10
8
147
R222
1K
R228
1.96K
R224
1K
C230
.047uF
U207D
74HCT00
12
13
11
147
TP239
TP236
R225
1K
+
-
U205A
MC34072
3
2
1
84
TP202
R211
1.96K
R226
21.5K
R208
1.96K
C217
.047uF
-+
FPNS-07PGR
P202
2
1
3
5
6
+ C218
4.7uF
C219
.047uF
C228
.047uF
R247
1K
TP209
R204
150
R248
1K
R218
23.7K
R202
174
R217
5.62K
R212
56.2K
R234
3.48K
+
-
U206A
MC34072
3
2
1
84
R213
237K
Q203
MMDF2N02E
8
1
2
5 6 7
3
4
R209
1K
TP227
TP216
R207
464K
TP229
R220
806
R210
464K
U209
4051
13
14
15
12
1
5
2
4
6
11
10
9
3
16 8
7
X0
X1
X2
X3
X4
X5
X6
X7
INH
A
B
C
X
VDD VSS
VEE
TP233
TP238
TP203
R206
1K
TP230
C214
.047uF