ISL28146_0806 Datasheet, PDF (13/16 Pages) Intersil Corporation – 5MHz, Single and Dual Rail-to-Rail Input-Output (RRIO) Op Amps

VDC
Offset
Signal
VDC
Offset
Signal
V_CM
ISL28146, ISL28246
PATIENT
LEAD
CONNECTOR
V+
VIN+
R
10k
V+
VIN-
R
10k
PATIENT
ELECTRODE
PADS
V_CM
SENSE
V+
R
10k
0.082µF
C3
R3
12.4k
R4
2.21k
V_CM
DRIVE
V+
CA
R
10k
1nF
PROTECTION
CIRCUIT
R
500k
V+
+
U1
FB+ ^EL8171
FB-
R1
10k
V+
U2 +
ISL28146
-
R2
158Ω
CF1
4.7µF
RF1
680k
R
1k
C
0.01µF
CB 1nF
V+
R
5k
-
U3B 1/2
ISL28288
+
VOUT+
V+
RFA
10k
RFB
10k
0.47µF
VOUT-
+2.4 TO 5.5V
SUPPLY
4.7µF
SUPPLY
COMMON
V+
+
U3A 1/2
ISL28288
-
V_CM REFERENCE
TO OTHER
CHANNELS
FIGURE 38. ECG/EEG AMPLIFIER
13
FN6321.3
June 23, 2008