TC1026 Datasheet, PDF (7/18 Pages) TelCom Semiconductor, Inc – LINEAR BUILDING BLOCK - LOW POWER COMPARATOR WITH OP AMP AND VOLTAGE REFERENCE

TC1026
FIGURE 4-2:
PRECISION BATTERY MONITOR
To System DC/DC
Converter
V_DD
+ ^{Op Amp}
AMP1
–
R2, 330k, 1%
R4, 470k, 1%
R5, 7.5M
V_DD
+
CMPTR1
–
Comparator
BATTLOW
+
3V
Alkaline
TC1026
R1, 270k, 1%
VR
V_DD
–
Comparator
CMPTR2
BATTFAIL
+
R6, 7.5M
R3, 470k, 1%
FIGURE 4-3:
MULTI-POLE BUTTERWORTH VOICE BAND RECEIVE FILTER
Gain = 0dB
Fch = 3.5kHz
-24dB/Octave
Fcl = 70Hz
+6dB/Octave
Passband Ripple
< 0.15dB
TC1026
0.1µF
V_DD /2
22.6k
V_DD
+
Op Amp
–
22.6k
V_OUT
6800pF
750pF
V_IN
21.0k
2400pF
21.0k
21.0k
470pF
V_DD
+
Op Amp
–
© 2002 Microchip Technology Inc.
DS21725B-page 7