LMC660
Typical Single-Supply Applications
Additional single-supply applications ideas can be found in
the LM324 datasheet. The LMC660 is pin-for-pin compatible
with the LM324 and offers greater bandwidth and input resis-
tance over the LM324. These features will improve the per-
formance of many existing single-supply applications. Note,
however, that the supply voltage range of the LMC660 is
smaller than that of the LM324.
Low-Leakage Sample-and-Hold
(V
+
= 5.0 VDC)
Sine-Wave Oscillator
DS008767-7
DS008767-9
Instrumentation Amplifier
Oscillator frequency is determined by R1, R2, C1, and C2:
fosc = 1/2πRC, where R = R1 = R2 and
C = C1 = C2.
This circuit, as shown, oscillates at 2.0 kHz with a peak-to-
peak output swing of 4.5V.
1 Hz Square-Wave Oscillator
DS008767-8
If R1 = R5, R3 = R6, and R4 = R7; then
DS008767-10
∴
A
V
≈100
for circuit shown.
For good CMRR over temperature, low drift resistors should
be used. Matching of R3 to R6 and R4 to R7 affect CMRR.
Gain may be adjusted through R2. CMRR may be adjusted
through R7.
Power Amplifier
DS008767-11
9
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